GLPI

Line plots across dimensions of each concept
Line plots across concepts
Tables

Plots across concepts

IncomeStatement

Expenses

Balance Sheet

Assets

Current Assets

NonCurrent Assets

PropertyPlantAndEquipmentNet

Liabilities

Stockholders Equity

CashFlow

NetCashProvidedByUsedInOperatingActivities

NetCashProvidedByUsedInInvestingActivities

NetCashProvidedByUsedInFinancingActivities

NonoperatingIncomeExpense

LesseeOperatingLeaseLiabilityPaymentsDue

Tables

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
us-gaap:CommonStockValue	█████▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▄▄▄▄▄▄▄▄▄▄▁	2.343	2.328	2.325	2.207	2.178	2.151	2.147	2.147	2.147	2.146	2.142	2.14	2.137	2.135	2.127	2.126	2.122	2.081	2.077	2.071	2.034	1.17	1.156	1.147	1.144	1.142	1.13	1.124	1.123	1.118	0.887	0.0	NA	0.0	NA	NA	NA	NA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding	█▁	234.05	233.465	NA	218.847	215.932	215.449	NA	215.325	215.605	215.288	NA	214.872	214.561	214.682	NA	214.553	211.802	209.526	NA	207.876	186.982	118.817	NA	118.763	119.387	118.499	NA	117.634	117.731	117.85	NA	115.603	115.603	115.603	NA	NA	NA	NA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic	█▁	233.25	232.775	NA	218.042	215.267	215.09	NA	214.683	214.664	214.626	NA	213.876	213.579	213.304	NA	212.5	209.747	207.88	NA	205.826	183.965	116.671	NA	114.54	114.33	113.666	NA	112.377	111.921	111.198	NA	110.582	110.582	110.582	NA	NA	NA	NA
us-gaap:EarningsPerShareBasic	▆▆█▆▆▅▆▅▅▅▃▅▅▅▅▅▅▅▅▅▅▃▃▄▅▅▄▅▅▅▂▁▁▁▁▁▁▂	0.59	0.55	0.76	0.58	0.52	0.45	0.53	0.42	0.43	0.43	0.21	0.49	0.43	0.45	0.44	0.46	0.46	0.45	0.45	0.43	0.4	0.28	0.26	0.29	0.4	0.41	0.39	0.44	0.42	0.4	0.08	0.02	0.04	0.04	0.02	0.04	0.07	0.08
us-gaap:EarningsPerShareDiluted	▆▆█▆▆▅▆▅▅▅▃▆▅▅▅▅▅▅▅▅▅▃▃▃▄▅▄▅▅▄▂▁▁▁▁▁▁▁	0.59	0.54	0.7499999999999998	0.58	0.52	0.45	0.53	0.42	0.43	0.43	0.21	0.49	0.43	0.45	0.43	0.45	0.45	0.45	0.45	0.43	0.39	0.27	0.25	0.28	0.38	0.4	0.38	0.42	0.4	0.38	0.08	0.02	0.04	0.03	0.02	0.04	0.07	0.07

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
COGS Ratio us-gaap:ProductOrService glpi:Gamingfoodbeverageandother	█▇▆▆▁▄▅▅▆▆▅▆	43.659	37.701	31.836	34.425	9.979	26.759	30.532	31.617	33.249	32.993	30.16	31.75	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
EBT Margin us-gaap:StatementBusinessSegments glpi:GLPCapitalLP	████▇▇▇▇▇▇█▆▆▆▆▆▆▆▅▅▄▂▂▂▃▃▃▃▃▂▁	274.102	263.842	268.325	273.129	251.989	256.723	258.452	255.995	255.764	254.871	273.157	222.389	218.332	209.304	207.908	209.489	207.119	204.705	202.5	199.257	170.405	112.042	93.457	111.532	125.194	124.854	124.12	119.845	119.744	118.112	76.557	NA	NA	NA	NA	NA	NA	NA
EBT Margin us-gaap:StatementBusinessSegments glpi:TRSProperties	█▇▆▆▁▄▅▅▆▆▅▆▆▆▆▆▆▇▆▆▇▇▆▆▇▇▆▇▇▇▇▇	43.659	37.701	31.836	34.425	9.979	26.759	30.532	31.617	33.249	32.993	30.16	31.75	35.889	34.746	32.789	35.017	36.272	38.008	36.299	34.018	36.956	36.778	35.232	36.26	38.629	37.807	34.916	37.95	41.042	40.216	37.218	39.633	NA	NA	NA	NA	NA	NA
Operating Margin us-gaap:StatementBusinessSegments glpi:GLPCapitalLP	████▇▇▇▇▇▇█▆▆▆▆▆▆▆▅▅▄▂▂▂▃▃▃▃▃▂▁	274.102	263.842	268.325	273.129	251.989	256.723	258.452	255.995	255.764	254.871	273.157	222.389	218.332	209.304	207.908	209.489	207.119	204.705	202.5	199.257	170.405	112.042	93.457	111.532	125.194	124.854	124.12	119.845	119.744	118.112	76.557	NA	NA	NA	NA	NA	NA	NA
Operating Margin us-gaap:StatementBusinessSegments glpi:TRSProperties	█▇▆▆▁▄▅▅▆▆▅▆▆▆▆▆▆▇▆▆▇▇▆▆▇▇▆▇▇▇▇▇	43.659	37.701	31.836	34.425	9.979	26.759	30.532	31.617	33.249	32.993	30.16	31.75	35.889	34.746	32.789	35.017	36.272	38.008	36.299	34.018	36.956	36.778	35.232	36.26	38.629	37.807	34.916	37.95	41.042	40.216	37.218	39.633	NA	NA	NA	NA	NA	NA

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType us-gaap:PerformanceShares	▆▆▅█▆▆▅▅▅▅▅▅▁▆▆▆▆▆▆▆▆▆▅▅▅▅▃▃▃	2.4	2.4	2.0	3.9	2.4	2.4	2.2	2.1	2.1	2.3	2.1	2.1	-0.4	2.6	2.5	2.4	2.4	2.4	2.8	2.8	2.7	2.7	1.9	2.0	2.0	2.2	1.1	1.1	0.7	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType us-gaap:RestrictedStock	▂▆▂█▃▃▃▃▄▄▂▂▂▂▂▂▂▄▃▃▃▃▃▃▃▂▂▂▂▁	1.2	3.4	1.3	4.5	1.7	1.8	1.7	1.7	2.1	2.0	1.2	1.1	1.0	1.4	1.3	1.2	1.4	2.1	1.7	1.9	1.9	1.8	1.5	1.5	1.5	1.4	1.0	1.1	0.9	0.6	NA	NA	0.9	NA	NA	NA	NA	NA
us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService glpi:Gamingfoodbeverageandother	█▇▆▆▁▆▆▆▇▇▆▇	22.382	19.926	17.162	18.175	4.858	16.503	17.961	18.549	19.168	19.022	18.1	18.962	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:GainsLossesOnExtinguishmentOfDebt		NA	NA	0.0	-0.779	-0.005	-17.329	0.0	-21.014	0.0	0.0	0.0	0.0	-3.473	NA	0.0	0.0	0.0	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument glpi:SeniorUnsecuredNotes400PercentDue2031		NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:GeneralAndAdministrativeExpense	▆▅▆▇▅▅▆▅▅▆▅▅█▅▁▇▇▇▇▇▇▇▇▆▇▇▇▆▆▇█▃▃▃	16.821	16.082	16.847	22.514	13.223	15.988	17.211	15.042	15.984	17.24	14.856	15.006	24.806	16.46	-0.305	21.534	20.691	21.231	21.179	21.821	22.261	20.906	21.123	19.285	23.722	21.539	22.621	17.743	19.531	20.941	25.946	5.553	5.824	5.939	NA	NA	NA	NA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	▇▆█▆▅▅▆▅▅▅▃▅▅▅▅▅▅▅▅▅▄▂▂▂▃▃▃▃▃▃▂▁▁▁	141.765	129.812	171.1	129.765	111.51	97.213	115.282	91.735	94.492	94.136	46.701	105.911	93.604	98.264	96.64	98.698	98.526	96.521	95.655	90.907	75.535	34.753	31.214	34.646	47.827	49.789	45.09	48.867	48.934	45.906	19.41	4.476	7.71	5.53	NA	NA	NA	NA
us-gaap:IncomeTaxExpenseBenefit	▄▃▃▃▁▂▂▂▃▂▂▂▃▃▄▃▃▃▃▂▃▃▃▃▃▃▂▁▃▃█▃▄▃	3.549	2.628	1.759	2.639	-0.84	0.319	0.991	1.188	1.459	1.126	0.77	1.096	1.606	1.492	3.381	1.684	2.192	2.53	1.963	1.307	2.271	2.004	1.441	1.417	1.882	2.702	0.932	-1.035	1.922	1.594	10.174	1.795	3.011	2.316	NA	NA	NA	NA
us-gaap:IncomeTaxesPaidNet	█▂▄▄▁	6.54	0.024	2.329	1.945	-0.891	NA	1.452	1.418	2.684	0.0	1.2	1.517	2.65	0.022	2.651	2.571	6.424	0.0	2.724	1.608	2.796	0.234	2.351	3.009	4.425	0.0	-6.8	2.3	10.8	13.8	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:InterestExpense	▇▇▇▇▇██████▇▆▆▆▆▆▆▆▆▅▄▄▄▄▄▄▄▄▄▃▁	70.413	70.413	70.485	70.179	69.474	72.004	73.158	75.111	76.523	76.728	76.22	60.341	57.055	54.068	53.969	54.493	54.657	53.949	53.679	52.88	45.936	33.401	33.81	31.226	29.585	29.562	29.57	29.378	29.108	28.974	19.254	0.0	NA	NA	NA	NA	NA	NA
us-gaap:InterestPaidNet	▆▄▆▄▆▄▆▃█▂█▁▆▁▆▁▆▂▆▁▄▁▄▁▄▁▄▁▄▁▁▁▁▁	78.878	58.645	78.87	43.647	86.271	52.339	94.036	41.163	118.481	20.85	120.135	7.234	93.861	8.549	93.326	8.503	93.874	8.739	90.025	6.201	55.732	2.569	52.409	2.491	52.451	2.6	52.4	2.4	52.5	2.1	0.8	0.0	0.0	0.0	NA	NA	NA	NA
us-gaap:NetIncomeLoss	▇▆█▆▆▅▆▅▅▅▃▅▅▅▅▅▅▅▅▅▄▂▂▂▃▃▃▃▃▃▁▁▁▁▁▁▁▁	138.216	127.184	169.341	127.126	112.35	96.894	114.291	90.547	93.033	93.01	45.931	104.815	91.998	96.772	93.259	97.014	96.334	93.991	93.692	89.6	73.264	32.749	29.773	33.229	45.945	47.087	44.158	49.902	47.012	44.312	9.234	2.681	4.699	3.216	2.106	4.53	7.618	8.665
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic	▇▆█▆▆▅▆▅▅▅▃▅▅▅▅▅▅▅▅▅▄▂▂▂▃▃▃▃▃▃▁▁▁▁	138.131	127.027	169.164	126.974	112.189	96.75	114.135	90.409	92.887	92.852	45.867	104.668	91.869	96.61	93.107	96.857	96.175	93.816	93.513	89.416	73.094	32.614	29.655	33.094	45.757	46.872	43.977	49.694	46.818	44.137	9.201	2.671	4.681	3.202	NA	NA	NA	NA
us-gaap:NonoperatingIncomeExpense	▃▃▃▃▃▁▃▁▂▂▂▄▄▄▄▄▄▄▄▄▅▆▆▆▆▆▆▆▆▆▇███	-70.359	-70.289	-70.407	-70.936	-69.206	-89.137	-72.974	-95.89	-76.275	-76.639	-77.183	-58.923	-59.637	-53.587	-53.477	-54.001	-54.17	-53.485	-53.208	-52.399	-45.282	-32.884	-33.239	-30.645	-29.0	-28.967	-28.963	-28.755	-28.44	-28.428	-19.607	-1.189	-1.38	-1.28	NA	NA	NA	NA
us-gaap:OperatingExpenses	▄▄▂▅▃▄▄▄▅▅█▄▄▄▄▄▄▄▄▄▄▃▂▃▄▃▃▃▃▃▃▁▁▁	105.637	101.442	58.654	106.853	81.252	97.132	100.728	99.987	118.246	117.089	179.433	89.305	100.98	92.199	90.58	91.807	90.695	92.707	89.936	89.969	86.544	81.183	64.236	82.501	86.996	83.905	84.983	80.173	83.412	83.994	74.758	33.968	36.982	35.839	NA	NA	NA	NA
us-gaap:OperatingIncomeLoss	▇▇█▇▆▆▆▆▆▆▅▆▅▅▅▅▅▅▅▅▄▃▃▃▃▃▃▃▃▃▂▁▁▁▁▁▁▁	212.124	200.101	241.507	200.701	180.716	186.35	188.256	187.625	170.767	170.775	123.884	164.834	153.241	151.851	150.117	152.699	152.696	150.006	148.863	143.306	120.817	67.637	64.453	65.291	76.827	78.756	74.053	77.622	77.374	74.334	39.016	5.665	9.09	6.811	4.534	8.155	14.472	16.507
us-gaap:Revenues	████▇▇▇▇▇▇█▆▆▆▆▆▆▆▆▆▅▄▃▄▄▄▄▄▄▄▃▁▁▁▁▁▂▂	317.761	301.543	300.161	307.554	261.968	283.482	288.984	287.612	289.013	287.864	303.317	254.139	254.221	244.05	240.697	244.506	243.391	242.713	238.799	233.275	207.361	148.82	128.689	147.792	163.823	162.661	159.036	157.795	160.786	158.328	113.776	39.633	46.072	42.648	37.659	45.823	60.252	66.909

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
us-gaap:Assets	██████▇████▇▇▇▇▇▇▇▇▇▆▃▃▃▃▃▃▃▃▃▃▁	9099.319	9013.49	9034.368	8636.983	8665.425	8899.161	8434.298	8504.752	8563.864	8646.832	8577.293	8295.898	7288.56	7220.447	7246.882	7334.808	7357.22	7314.399	7369.33	7421.32	7149.062	2436.229	2448.155	2516.115	2515.974	2552.477	2564.58	2595.437	2581.677	2561.886	2609.239	0.0	NA	0.0	267.075	NA	NA	NA
us-gaap:Liabilities	▇▇▇▇▇█▇▇▇▇▇▆▅▅▅▅▅▅▅▅▅▁▁▁▁▁▁▁▁▁▁	6397.588	6366.847	6359.35	6427.707	6562.66	6886.856	6360.053	6398.12	6405.177	6439.148	6311.686	5937.502	4909.792	4803.599	4788.635	4841.704	4838.453	4907.063	4935.461	4971.66	4762.89	2695.044	2701.669	2752.701	2651.821	2678.017	2689.316	2673.336	2654.599	2629.914	2466.81	NA	NA	NA	30.745	NA	NA	NA
us-gaap:LiabilitiesAndStockholdersEquity	██████▇▇▇█▇▇▆▆▆▆▆▆▆▆▆▁▁▁▁▁▁▁▁▁▁	9099.319	9013.49	9034.368	8636.983	8665.425	8899.161	8434.298	8504.752	8563.864	8646.832	8577.293	8295.898	7288.56	7220.447	7246.882	7334.808	7357.22	7314.399	7369.33	7421.32	7149.062	2436.229	2448.155	2516.115	2515.974	2552.477	2564.58	2595.437	2581.677	2561.886	2609.239	NA	NA	NA	267.075	NA	NA	NA
us-gaap:StockholdersEquity	███▇▇▆▇▇▇▇▇▇▇▇▇██▇▇▇▇▁▁▁▁▁▁▁▁▁▂▂	2701.731	2646.643	2675.018	2209.276	2102.765	2012.305	2074.245	2106.632	2158.687	2207.684	2265.607	2358.396	2378.768	2416.848	2458.247	2493.104	2518.767	2407.336	2433.869	2449.66	2386.172	-258.815	-253.514	-236.586	-135.847	-125.54	-124.736	-77.899	-72.922	-68.028	142.429	0.0	NA	0.0	236.33	NA	NA	NA

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
us-gaap:CashAndCashEquivalentsAtCarryingValue		NA	NA	NA	105.894	NA	NA	26.823	25.556	24.739	30.334	25.783	1162.774	144.472	45.42	29.054	43.634	29.51	23.361	36.556	25.359	23.739	61.561	41.875	42.74	31.059	45.367	35.973	31.334	41.679	48.278	285.221	0.0	18.4	0.0	14.562	NA	NA	NA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	▂▄▄▁▁▄▁▁▁▁▁█	147.594	520.74	486.451	105.894	74.05	559.545	26.823	25.556	24.739	30.334	25.783	1162.774	NA	NA	29.054	NA	NA	NA	36.556	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:Land us-gaap:BusinessAcquisition glpi:TropicanaLasVegas		NA	303.888	304.831	305.773	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
us-gaap:PropertyPlantAndEquipmentGross	▁▁▁▇███████████▇████████▇▇▇▇▇▇▆	178.344	177.768	177.114	259.531	267.399	266.928	266.282	266.271	265.928	265.239	264.738	263.495	262.535	262.365	261.542	260.721	262.31	262.706	263.61	262.373	262.176	261.338	261.082	261.216	260.458	258.699	252.798	251.645	251.324	251.146	244.965	NA	NA	NA	213.616	NA	NA	NA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	▁▁▁▇███▇▇▇▇▇▆▆▆▆▅▅▅▅▅▄▄▄▄▃▃▃▂▂▂	99.267	97.849	96.496	170.212	176.511	174.485	172.202	170.654	168.709	166.726	163.854	161.066	158.223	156.106	153.249	150.49	147.897	146.259	144.183	140.991	137.93	134.583	131.335	129.3	125.717	122.166	118.77	115.506	112.314	109.26	105.844	NA	NA	NA	94.662	NA	NA	NA
us-gaap:AmortizationOfIntangibleAssets		NA	NA	NA	3.021	NA	NA	NA	3.02	NA	3.09	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:AmortizationOfIntangibleAssets us-gaap:FairValueByAssetClass glpi:LandRights	█▁	3.006	2.843	NA	NA	3.02	3.02	NA	NA	6.04	3.09	3.1	2.7	2.7	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:PropertyPlantAndEquipmentNet	▁▁▁▂▂▂▃▃▃▃▃▄▄▄▄▄▅▅▅▆▆▆▇▇▇▇▇▇███	79.077	79.919	80.618	89.319	90.888	92.443	94.08	95.617	97.219	98.513	100.884	102.429	104.312	106.259	108.293	110.231	114.413	116.447	119.427	121.382	124.246	126.755	129.747	131.916	134.741	136.533	134.028	136.139	139.01	141.886	139.121	NA	NA	NA	118.954	NA	NA	NA
us-gaap:Goodwill		NA	NA	NA	16.067	16.067	16.067	16.067	16.067	16.067	16.067	16.067	75.521	75.521	75.521	75.521	75.521	75.521	75.521	75.521	75.521	75.521	75.521	75.521	75.521	75.521	75.521	75.521	75.521	75.521	75.521	75.521	NA	NA	NA	75.521	NA	NA	NA
us-gaap:DeferredTaxAssetsLiabilitiesNet		NA	NA	5.331	NA	NA	NA	5.777	NA	NA	NA	4.917	NA	NA	NA	4.234	NA	NA	NA	3.657	NA	NA	NA	2.215	NA	NA	NA	1.251	NA	NA	NA	-2.054	NA	NA	NA	-5.558	NA	NA	NA
us-gaap:OperatingLeaseRightOfUseAsset	█▁▁▅▅▆▆▇▇█	865.392	765.932	769.197	828.13	831.552	835.027	838.734	859.293	862.927	872.656	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
us-gaap:TaxesPayableCurrent		NA	1.922	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
us-gaap:DeferredIncomeTaxLiabilitiesNet	▇█▆▅▄▅▃▂▁▂▂	0.38	0.399	0.359	0.334	0.307	0.332	0.279	0.262	0.233	0.258	0.261	NA	NA	NA	0.244	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	█▁▁█	13.664	11.082	11.082	13.759	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree	█▁▁█	13.617	11.081	11.081	13.707	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour	█▁▁█	13.567	11.034	11.034	13.638	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive		NA	10.984	10.984	13.617	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive		NA	569.957	569.957	644.059	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
us-gaap:StockholdersEquity	███▇▇▆▇▇▇▇▇▇▇▇▇██▇▇▇▇▁▁▁▁▁▁▁▁▁▂▂	2701.731	2646.643	2675.018	2209.276	2102.765	2012.305	2074.245	2106.632	2158.687	2207.684	2265.607	2358.396	2378.768	2416.848	2458.247	2493.104	2518.767	2407.336	2433.869	2449.66	2386.172	-258.815	-253.514	-236.586	-135.847	-125.54	-124.736	-77.899	-72.922	-68.028	142.429	0.0	NA	0.0	236.33	NA	NA	NA
us-gaap:CommonStockValue	█████▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▄▄▄▄▄▄▄▄▄▄▁	2.343	2.328	2.325	2.207	2.178	2.151	2.147	2.147	2.147	2.146	2.142	2.14	2.137	2.135	2.127	2.126	2.122	2.081	2.077	2.071	2.034	1.17	1.156	1.147	1.144	1.142	1.13	1.124	1.123	1.118	0.887	0.0	NA	0.0	NA	NA	NA	NA
us-gaap:AdditionalPaidInCapitalCommonStock	███▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▃▃▂▂▂▂▂▂▂▁▁	4354.643	4280.723	4284.789	3960.861	3955.293	3951.341	3959.383	3955.555	3951.949	3947.768	3952.503	3945.392	3935.517	3930.777	3933.829	3927.786	3916.328	3769.502	3760.729	3745.505	3647.137	962.826	935.22	918.668	910.225	903.608	888.86	874.435	869.861	862.588	3.651	0.0	NA	0.0	71.356	NA	NA	NA
us-gaap:RetainedEarningsAccumulatedDeficit	▂▂▂▂▁▁▁▁▁▂▂▂▂▂▃▃▃▃▃▃▃▃▄▄▄▄▄▄▄▄█	-1655.255	-1636.408	-1612.096	-1753.792	-1854.706	-1941.187	-1887.285	-1851.07	-1795.409	-1742.23	-1689.038	-1589.136	-1558.886	-1516.064	-1477.709	-1436.808	-1399.683	-1364.247	-1328.937	-1297.916	-1262.999	-1222.811	-1189.89	-1156.401	-1047.216	-1030.29	-1014.726	-953.458	-943.906	-931.734	137.891	NA	NA	NA	164.974	NA	NA	NA

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities	▇▇▄▃▁▇▆█▅█▅█▄▇▄	197.363	205.208	117.546	80.818	30.928	198.785	166.616	219.605	142.658	221.423	136.215	212.596	119.866	185.756	109.607	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:NetCashProvidedByUsedInInvestingActivities	▆█████████▁████	-488.784	-1.044	-7.873	-0.48	-0.488	-0.646	-0.771	-0.689	-1.009	-0.348	-1531.645	-5.607	10.081	17.387	17.642	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:NetCashProvidedByUsedInFinancingActivities	▃▃▅▃▁▅▃▃▃▃▅█▄▃▃	-86.774	-161.38	293.015	-48.494	-515.935	334.583	-164.578	-218.099	-147.244	-216.524	258.439	811.313	-30.895	-186.777	-141.829	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	▄▆▇▆▆█▆▆▆▆▁	-338.857	34.289	380.557	31.844	47.227	532.722	1.267	0.817	-5.595	4.551	-1136.991	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit	▆▆▇▇▄▆▅▆▅▅▅▆▅▆█▅▅▅▅▆▅▆█▅▄▅▆▄▄▄▁▂▅▆	-0.107	0.188	0.535	0.934	-1.056	0.038	-0.227	-0.062	-0.218	-0.248	-0.223	-0.182	-0.281	0.164	1.385	-0.666	-0.538	-0.742	-0.538	-0.173	-0.745	-0.079	1.366	-0.642	-1.151	-0.386	-0.16	-1.226	-1.021	-0.898	-3.095	-2.178	-0.501	0.128	NA	NA	NA	NA
us-gaap:DepreciationDepletionAndAmortization	▆▆▆▆▆▆▆▆█▆▅▁▁▂▂▂▂▁▁▁▁▁▁▁	61.156	61.544	61.901	61.101	60.41	59.583	59.71	60.322	77.271	61.668	57.439	29.994	30.251	30.681	30.896	31.359	31.012	30.568	30.598	29.476	28.56	27.083	27.198	27.557	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:IncreaseDecreaseInAccountsPayable	▅▅▄▅▅▅▅▅▅▄▅▅▅▅▅▅▅▅▅▅▅▅▄▅▅▄▅▁█▅▆▅▅▅	1.132	-0.128	-1.088	-0.282	0.785	-0.667	0.84	-0.005	-0.531	-1.809	0.66	1.39	-0.029	-0.225	0.28	0.003	-0.523	-0.181	0.449	0.302	-0.29	0.045	-0.962	0.681	0.68	-1.345	-0.17	-9.663	8.14	0.043	2.264	0.239	-0.042	0.177	NA	NA	NA	NA
us-gaap:NetCashProvidedByUsedInOperatingActivities	▇▇▄▃▁▇▆█▅█▅█▄▇▄	197.363	205.208	117.546	80.818	30.928	198.785	166.616	219.605	142.658	221.423	136.215	212.596	119.866	185.756	109.607	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:NetIncomeLoss	▇▆█▆▆▅▆▅▅▅▃▅▅▅▅▅▅▅▅▅▄▂▂▂▃▃▃▃▃▃▁▁▁▁▁▁▁▁	138.216	127.184	169.341	127.126	112.35	96.894	114.291	90.547	93.033	93.01	45.931	104.815	91.998	96.772	93.259	97.014	96.334	93.991	93.692	89.6	73.264	32.749	29.773	33.229	45.945	47.087	44.158	49.902	47.012	44.312	9.234	2.681	4.699	3.216	2.106	4.53	7.618	8.665
us-gaap:ShareBasedCompensation	▄▆▃█▄▄▄▄▄▄▃▃▁▄▄▄▄▄▅▅▅▅▄▄▄▄▄▄▃▂▂	3.612	5.788	3.352	8.353	4.064	4.235	3.845	3.845	4.183	4.325	3.274	3.275	0.616	3.987	3.685	3.695	3.773	4.483	4.508	4.641	4.591	4.572	4.153	4.153	4.111	4.394	3.635	3.536	3.136	1.951	1.566	NA	NA	NA	NA	NA	NA	NA

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities	▆█████████▁████	-488.784	-1.044	-7.873	-0.48	-0.488	-0.646	-0.771	-0.689	-1.009	-0.348	-1531.645	-5.607	10.081	17.387	17.642	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment		NA	0.606	NA	NA	NA	NA	0.0	0.0	0.0	0.0	0.0	0.006	0.014	0.0	0.0	0.01	0.06	0.008	0.007	0.054	0.004	0.265	2.45	2.949	5.11	5.64	14.705	69.022	31.502	24.002	11.541	0.103	0.476	0.078	NA	NA	NA	NA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment us-gaap:StatementBusinessSegments glpi:TRSProperties		NA	0.606	NA	NA	NA	NA	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.101	0.0	0.0	0.866	5.031	0.0	0.0	0.0	0.0	-1.501	0.103	NA	NA	NA	NA	NA	NA
us-gaap:PaymentsToAcquireProductiveAssets	▁█	0.514	0.606	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	31.502	24.002	NA	NA	0.476	0.078	NA	NA	NA	NA

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities	▃▃▅▃▁▅▃▃▃▃▅█▄▃▃	-86.774	-161.38	293.015	-48.494	-515.935	334.583	-164.578	-218.099	-147.244	-216.524	258.439	811.313	-30.895	-186.777	-141.829	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:ProceedsFromIssuanceOfLongTermDebt		NA	NA	0.0	207.648	694.135	1174.6	46.0	1157.853	93.0	62.0	486.0	1107.405	1000.0	0.0	0.0	0.0	NA	NA	50.0	165.0	NA	NA	0.0	0.0	0.0	0.0	63.95	20.0	25.992	182.008	2350.0	NA	NA	NA	NA	NA	NA	NA
us-gaap:RepaymentsOfLongTermDebt	▁▁▁▂█▅▁█▂▂▁▂▆▁▁▁▂▂▁▁▃▁▁▁▁▁▁▁▁▁▁	0.034	0.033	0.034	225.012	1174.632	661.206	60.031	1200.857	94.031	123.03	84.03	156.486	878.572	45.029	10.029	75.028	155.028	95.027	50.028	20.025	265.026	42.025	0.025	25.025	10.024	33.024	0.024	0.0	0.0	32.0	0.0	NA	NA	NA	NA	NA	NA	NA
us-gaap:PaymentsOfDividends	▅▅▂▂▂▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▃▃▃▃▃▄▃▃█▁	157.063	151.496	27.645	26.212	25.869	150.796	150.506	146.208	146.212	146.202	145.833	135.065	134.82	134.717	134.16	134.139	131.77	129.301	124.713	124.517	113.452	65.67	63.262	62.948	62.871	62.651	105.426	59.454	59.184	270.04	0.0	NA	NA	NA	NA	NA	NA	NA
us-gaap:Dividends	█▁	157.063	151.496	NA	26.212	25.869	150.796	NA	146.208	146.212	146.202	145.833	135.065	134.82	134.717	134.16	134.139	131.77	129.301	124.713	124.517	113.452	65.67	63.262	62.948	62.871	62.651	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31

Common Stock Value

us-gaap:CommonStockValue

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-03-31
Value	2343000.0	2328000.0	2325000.0	2207000.0	2178000.0	2151000.0	2147000.0	2147000.0	2147000.0	2146000.0	2142000.0	2140000.0	2137000.0	2135000.0	2127000.0	2126000.0	2122000.0	2081000.0	2077000.0	2071000.0	2034000.0	1170000.0	1156000.0	1147000.0	1144000.0	1142000.0	1130000.0	1124000.0	1123000.0	1118000.0	887000.0	0	0
Percentage of CommonStockValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0
Percentage of Assets	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

Period End	2021-06-30	2021-03-31	2020-09-30	2020-06-30	2020-03-31	2019-09-30	2019-06-30	2019-03-31	2018-09-30	2018-06-30	2018-03-31	2017-09-30	2017-06-30	2017-03-31	2016-09-30	2016-06-30	2016-03-31	2015-09-30	2015-06-30	2015-03-31	2014-09-30	2014-06-30	2014-03-31	2013-09-30	2013-06-30	2013-03-31
Value	234	233	218	215	215	215	215	215	214	214	214	214	211	209	207	186	118	118	119	118	117	117	117	115	115	115
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

Period End	2021-06-30	2021-03-31	2020-09-30	2020-06-30	2020-03-31	2019-09-30	2019-06-30	2019-03-31	2018-09-30	2018-06-30	2018-03-31	2017-09-30	2017-06-30	2017-03-31	2016-09-30	2016-06-30	2016-03-31	2015-09-30	2015-06-30	2015-03-31	2014-09-30	2014-06-30	2014-03-31	2013-09-30	2013-06-30	2013-03-31
Value	233	232	218	215	215	214	214	214	213	213	213	212	209	207	205	183	116	114	114	113	112	111	111	110	110	110
Percentage of WeightedAverageNumberOfSharesOutstandingBasic	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
Value	0.59	0.55	0.76	0.58	0.52	0.45	0.53	0.42	0.43	0.43	0.21	0.49	0.43	0.45	0.44	0.46	0.46	0.45	0.45	0.43	0.4	0.28	0.26	0.29	0.4	0.41	0.39	0.44	0.42	0.4	0.08	0.02	0.04	0.04	0.02	0.04	0.07	0.08
Percentage of EarningsPerShareBasic	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
Value	0.59	0.54	0.75	0.58	0.52	0.45	0.53	0.42	0.43	0.43	0.21	0.49	0.43	0.45	0.43	0.45	0.45	0.45	0.45	0.43	0.39	0.27	0.25	0.28	0.38	0.4	0.38	0.42	0.4	0.38	0.08	0.02	0.04	0.03	0.02	0.04	0.07	0.07
Percentage of EarningsPerShareDiluted	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:PerformanceShares

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30
Value	2.4	2.4	2.0	3.9	2.4	2.4	2.2	2.1	2.1	2.3	2.1	2.1	-0.4	2.6	2.5	2.4	2.4	2.4	2.8	2.8	2.7	2.7	1.9	2.0	2.0	2.2	1.1	1.1	0.7
Percentage of AllocatedShareBasedCompensationExpense	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	0.8	0.8	0.7	1.3	0.9	0.8	0.8	0.7	0.7	0.8	0.7	0.8	-0.2	1.1	1.0	1.0	1.0	1.0	1.2	1.2	1.3	1.8	1.5	1.4	1.2	1.4	0.7	0.7	0.4
Percentage of Revenues us-gaap:PerformanceShares	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:RestrictedStock

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-06-30
Value	1.2	3.4	1.3	4.5	1.7	1.8	1.7	1.7	2.1	2.0	1.2	1.1	1.0	1.4	1.3	1.2	1.4	2.1	1.7	1.9	1.9	1.8	1.5	1.5	1.5	1.4	1.0	1.1	0.9	0.6	0.9
Percentage of AllocatedShareBasedCompensationExpense	50.0	141.7	65.0	115.4	70.8	75.0	77.3	81.0	100.0	87.0	57.1	52.4	-250.0	53.8	52.0	50.0	58.3	87.5	60.7	67.9	70.4	66.7	78.9	75.0	75.0	63.6	90.9	100.0	128.6	0.0	0.0
Percentage of Revenues	0.4	1.1	0.4	1.5	0.6	0.6	0.6	0.6	0.7	0.7	0.4	0.4	0.4	0.6	0.5	0.5	0.6	0.9	0.7	0.8	0.9	1.2	1.2	1.0	0.9	0.9	0.6	0.7	0.6	0.4	2.0
Percentage of Revenues us-gaap:RestrictedStock	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService

us-gaap:CostOfGoodsAndServicesSold

glpi:Gamingfoodbeverageandother

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30
Value	22	19	17	18	4.858	16	17	18	19	19	18	18
Percentage of CostOfGoodsAndServicesSold	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	7.0	6.6	5.7	5.9	1.9	5.8	6.2	6.4	6.6	6.6	6.0	7.5
Percentage of Revenues glpi:Gamingfoodbeverageandother	51.3	52.9	0.0	52.8	48.7	61.7	0.0	58.7	57.6	57.7	0.0	59.7

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

Period End	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2017-12-31	2017-09-30	2017-06-30
Value	0	-779000.0	-5000.0	-17329000.0	0	-21014000.0	0	0	0	0	-3473000.0	0	0	0
Percentage of GainsLossesOnExtinguishmentOfDebt	0.0	100.0	100.0	100.0	0.0	100.0	0.0	0.0	0.0	0.0	100.0	0.0	0.0	0.0
Percentage of Revenues	0.0	-0.3	-0.0	-6.1	0.0	-7.3	0.0	0.0	0.0	0.0	-1.4	0.0	0.0	0.0

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument

glpi:SeniorUnsecuredNotes400PercentDue2031

Period End	2020-08-18
Value	-800000.0
Percentage of GainsLossesOnExtinguishmentOfDebt	0.0
Percentage of Revenues	0.0
Percentage of Revenues glpi:SeniorUnsecuredNotes400PercentDue2031	0.0

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	16	16	16	22	13	15	17	15	15	17	14	15	24	16	-0.305	21	20	21	21	21	22	20	21	19	23	21	22	17	19	20	25	5.553	5.824	5.939
Percentage of GeneralAndAdministrativeExpense	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	5.3	5.3	5.6	7.3	5.0	5.6	6.0	5.2	5.5	6.0	4.9	5.9	9.8	6.7	-0.1	8.8	8.5	8.7	8.9	9.4	10.7	14.0	16.4	13.0	14.5	13.2	14.2	11.2	12.1	13.2	22.8	14.0	12.6	13.9

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	141	129	171	129	111	97	115	91	94	94	46	105	93	98	96	98	98	96	95	90	75	34	31	34	47	49	45	48	48	45	19	4.476	7.71	5.53
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	44.6	43.0	57.0	42.2	42.6	34.3	39.9	31.9	32.7	32.7	15.4	41.7	36.8	40.3	40.2	40.4	40.5	39.8	40.1	39.0	36.4	23.4	24.3	23.4	29.2	30.6	28.4	31.0	30.4	29.0	17.1	11.3	16.7	13.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:StatementBusinessSegments

glpi:GLPCapitalLP

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	132	124	168	125	117	96	112	88	90	90	104	103	89	93	93	95	93	91	91	88	70	30	28	31	43	45	43	46	44	42	15	0.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	93.1	95.8	98.6	97.0	105.3	99.4	98.0	96.6	95.7	96.5	224.5	97.6	95.2	95.5	96.9	96.6	95.2	94.4	95.6	97.3	93.8	87.7	90.5	91.9	91.7	90.8	95.6	94.4	90.7	91.6	77.7	0.0
Percentage of Revenues	41.6	41.2	56.2	40.9	44.8	34.1	39.1	30.8	31.3	31.6	34.6	40.7	35.0	38.5	38.9	39.0	38.6	37.6	38.3	37.9	34.2	20.5	22.0	21.6	26.8	27.8	27.1	29.2	27.6	26.6	13.3	0.0
Percentage of Revenues glpi:GLPCapitalLP	48.2	47.1	0.0	46.1	46.6	37.6	0.0	34.6	35.3	35.6	0.0	46.5	40.8	44.9	0.0	45.5	45.3	44.5	0.0	44.4	41.6	27.2	0.0	28.6	35.0	36.2	0.0	38.5	37.1	35.6	0.0	0.0

glpi:TRSProperties

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	9.72	5.472	2.333	3.873	-5.94	0.565	2.323	3.078	4.098	3.305	-58.155	2.556	4.506	4.377	3.021	3.367	4.694	5.372	4.166	2.436	4.671	4.266	2.96	2.795	3.957	4.6	1.979	2.734	4.554	3.862	4.331	4.476
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	6.9	4.2	1.4	3.0	-5.3	0.6	2.0	3.4	4.3	3.5	-124.5	2.4	4.8	4.5	3.1	3.4	4.8	5.6	4.4	2.7	6.2	12.3	9.5	8.1	8.3	9.2	4.4	5.6	9.3	8.4	22.3	100.0
Percentage of Revenues	3.1	1.8	0.8	1.3	-2.3	0.2	0.8	1.1	1.4	1.1	-19.2	1.0	1.8	1.8	1.3	1.4	1.9	2.2	1.7	1.0	2.3	2.9	2.3	1.9	2.4	2.8	1.2	1.7	2.8	2.4	3.8	11.3
Percentage of Revenues glpi:TRSProperties	22.3	14.5	0.0	11.3	-59.5	2.1	0.0	9.7	12.3	10.0	0.0	8.1	12.6	12.6	0.0	9.6	12.9	14.1	0.0	7.2	12.6	11.6	0.0	7.7	10.2	12.2	0.0	7.2	11.1	9.6	0.0	11.3

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	3.549	2.628	1.759	2.639	-0.84	0.319	0.991	1.188	1.459	1.126	0.77	1.096	1.606	1.492	3.381	1.684	2.192	2.53	1.963	1.307	2.271	2.004	1.441	1.417	1.882	2.702	0.932	-1.035	1.922	1.594	10	1.795	3.011	2.316
Percentage of IncomeTaxExpenseBenefit	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	1.1	0.9	0.6	0.9	-0.3	0.1	0.3	0.4	0.5	0.4	0.3	0.4	0.6	0.6	1.4	0.7	0.9	1.0	0.8	0.6	1.1	1.3	1.1	1.0	1.1	1.7	0.6	-0.7	1.2	1.0	8.9	4.5	6.5	5.4

us-gaap:IncomeTaxExpenseBenefit us-gaap:StatementBusinessSegments

glpi:GLPCapitalLP

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	0.204	0.292	0.182	0.206	0.182	0.127	0.196	0.196	0.197	0.068	0.227	0.229	0.228	0.171	0.245	0.242	0.242	0.37	0.21	0.21	0.21	0.386	0.117	0.225	0.186	0.81	0.002	-1.491	0.0	0.0	8.467	0.0
Percentage of IncomeTaxExpenseBenefit	5.7	11.1	10.3	7.8	-21.7	39.8	19.8	16.5	13.5	6.0	29.5	20.9	14.2	11.5	7.2	14.4	11.0	14.6	10.7	16.1	9.2	19.3	8.1	15.9	9.9	30.0	0.2	144.1	0.0	0.0	83.2	0.0
Percentage of Revenues	0.1	0.1	0.1	0.1	0.1	0.0	0.1	0.1	0.1	0.0	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.2	0.1	0.1	0.1	0.3	0.1	0.2	0.1	0.5	0.0	-0.9	0.0	0.0	7.4	0.0
Percentage of Revenues glpi:GLPCapitalLP	0.1	0.1	0.0	0.1	0.1	0.0	0.0	0.1	0.1	0.0	0.0	0.1	0.1	0.1	0.0	0.1	0.1	0.2	0.0	0.1	0.1	0.3	0.0	0.2	0.1	0.6	0.0	-1.2	0.0	0.0	0.0	0.0

glpi:TRSProperties

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	3.345	2.336	1.577	2.433	-1.022	0.192	0.795	0.992	1.262	1.058	0.543	0.867	1.378	1.321	3.136	1.442	1.95	2.16	1.753	1.097	2.061	1.618	1.324	1.192	1.696	1.892	0.93	0.456	1.922	1.594	1.707	1.795
Percentage of IncomeTaxExpenseBenefit	94.3	88.9	89.7	92.2	121.7	60.2	80.2	83.5	86.5	94.0	70.5	79.1	85.8	88.5	92.8	85.6	89.0	85.4	89.3	83.9	90.8	80.7	91.9	84.1	90.1	70.0	99.8	-44.1	100.0	100.0	16.8	100.0
Percentage of Revenues	1.1	0.8	0.5	0.8	-0.4	0.1	0.3	0.3	0.4	0.4	0.2	0.3	0.5	0.5	1.3	0.6	0.8	0.9	0.7	0.5	1.0	1.1	1.0	0.8	1.0	1.2	0.6	0.3	1.2	1.0	1.5	4.5
Percentage of Revenues glpi:TRSProperties	7.7	6.2	0.0	7.1	-10.2	0.7	0.0	3.1	3.8	3.2	0.0	2.7	3.8	3.8	0.0	4.1	5.4	5.7	0.0	3.2	5.6	4.4	0.0	3.3	4.4	5.0	0.0	1.2	4.7	4.0	0.0	4.5

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31
Value	6.54	0.024	2.329	1.945	-0.891	1.452	1.418	2.684	0.0	1.2	1.517	2.65	0.022	2.651	2.571	6.424	0.0	2.724	1.608	2.796	0.234	2.351	3.009	4.425	0.0	-6.8	2.3	10	13
Percentage of IncomeTaxesPaidNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	100.0	100.0	100.0
Percentage of Revenues	2.1	0.0	0.8	0.6	-0.3	0.5	0.5	0.9	0.0	0.4	0.6	1.0	0.0	1.1	1.1	2.6	0.0	1.1	0.7	1.3	0.2	1.8	2.0	2.7	0.0	-4.3	1.5	6.7	8.7

Interest Expense

us-gaap:InterestExpense

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	70	70	70	70	69	72	73	75	76	76	76	60	57	54	53	54	54	53	53	52	45	33	33	31	29	29	29	29	29	28	19	0.0
Percentage of InterestExpense	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0
Percentage of Revenues	22.2	23.4	23.5	22.8	26.5	25.4	25.3	26.1	26.5	26.7	25.1	23.7	22.4	22.2	22.4	22.3	22.5	22.2	22.5	22.7	22.2	22.4	26.3	21.1	18.1	18.2	18.6	18.6	18.1	18.3	16.9	0.0

us-gaap:InterestExpense us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination

Period End	2021-06-30	2021-03-31	2020-09-30	2020-06-30	2020-03-31	2019-09-30	2019-06-30	2018-12-31	2018-09-30	2018-06-30
Value	4.5	4.5	4.5	2.6	2.6	2.6	2.6	-18.206	2.6	2.6
Percentage of InterestExpense	6.4	6.4	6.4	3.7	3.6	3.5	3.4	-23.9	4.3	4.6
Percentage of Revenues	1.4	1.5	1.5	1.0	0.9	0.9	0.9	-6.0	1.0	1.0
Percentage of Revenues us-gaap:IntersegmentElimination	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:InterestExpense us-gaap:StatementBusinessSegments

glpi:GLPCapitalLP

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31
Value	65	65	66	65	65	69	70	72	73	74	84	57	54	51
Percentage of InterestExpense	93.7	93.7	93.7	93.6	93.6	96.4	96.4	96.5	96.6	96.6	110.2	95.7	95.4	95.2
Percentage of Revenues	20.8	21.9	22.0	21.4	24.8	24.5	24.4	25.2	25.6	25.8	27.7	22.7	21.4	21.1
Percentage of Revenues glpi:GLPCapitalLP	24.1	25.0	0.0	24.1	25.8	27.0	0.0	28.3	28.9	29.1	0.0	26.0	24.9	24.6

glpi:TRSProperties

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31
Value	4.459	4.459	4.459	4.459	4.46	2.601	2.602	2.601	2.602	2.601	2.602	2.601	2.602	2.601
Percentage of InterestExpense	6.3	6.3	6.3	6.4	6.4	3.6	3.6	3.5	3.4	3.4	3.4	4.3	4.6	4.8
Percentage of Revenues	1.4	1.5	1.5	1.4	1.7	0.9	0.9	0.9	0.9	0.9	0.9	1.0	1.0	1.1
Percentage of Revenues glpi:TRSProperties	10.2	11.8	0.0	13.0	44.7	9.7	0.0	8.2	7.8	7.9	0.0	8.2	7.3	7.5

Interest Paid Net

us-gaap:InterestPaidNet

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	78	58	78	43	86	52	94	41	118	20	120	7.234	93	8.549	93	8.503	93	8.739	90	6.201	55	2.569	52	2.491	52	2.6	52	2.4	52	2.1	0.8	0.0	0.0	0.0
Percentage of InterestPaidNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0	0.0
Percentage of Revenues	24.8	19.4	26.3	14.2	32.9	18.5	32.5	14.3	41.0	7.2	39.6	2.8	36.9	3.5	38.8	3.5	38.6	3.6	37.7	2.7	26.9	1.7	40.7	1.7	32.0	1.6	32.9	1.5	32.7	1.3	0.7	0.0	0.0	0.0

Net Income Loss

us-gaap:NetIncomeLoss

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
Value	138	127	169	127	112	96	114	90	93	93	45	104	91	96	93	97	96	93	93	89	73	32	29	33	45	47	44	49	47	44	9.234	2.681	4.699	3.216	2.106	4.53	7.618	8.665
Percentage of NetIncomeLoss	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	43.5	42.2	56.4	41.3	42.9	34.2	39.5	31.5	32.2	32.3	15.1	41.2	36.2	39.7	38.7	39.7	39.6	38.7	39.2	38.4	35.3	22.0	23.1	22.5	28.0	28.9	27.8	31.6	29.2	28.0	8.1	6.8	10.2	7.5	5.6	9.9	12.6	13.0

us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments

glpi:GLPCapitalLP

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	131	124	168	125	117	96	112	88	90	90	104	103	88	93	93	95	93	90	91	88	70	30	28	31	43	44	43	47	44	42	6.612	0.0
Percentage of NetIncomeLoss	95.4	97.5	99.6	98.9	104.4	99.6	98.7	97.7	97.0	97.6	227.8	98.4	96.6	96.8	100.1	98.0	97.2	96.6	97.4	98.5	96.4	91.9	94.5	95.2	95.1	94.2	97.6	95.4	94.4	94.9	71.6	0.0
Percentage of Revenues	41.5	41.1	56.2	40.9	44.8	34.0	39.0	30.8	31.2	31.5	34.5	40.6	35.0	38.4	38.8	38.9	38.5	37.4	38.2	37.8	34.1	20.2	21.9	21.4	26.7	27.3	27.1	30.2	27.6	26.6	5.8	0.0
Percentage of Revenues glpi:GLPCapitalLP	48.1	47.0	0.0	46.0	46.5	37.6	0.0	34.6	35.3	35.6	0.0	46.4	40.7	44.8	0.0	45.4	45.2	44.3	0.0	44.3	41.5	26.9	0.0	28.4	34.9	35.5	0.0	39.7	37.1	35.6	0.0	0.0

glpi:TRSProperties

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	6.375	3.136	0.756	1.44	-4.918	0.373	1.528	2.086	2.836	2.247	-58.698	1.689	3.128	3.056	-0.115	1.925	2.744	3.212	2.413	1.339	2.61	2.648	1.636	1.603	2.261	2.708	1.049	2.278	2.632	2.268	2.624	2.681
Percentage of NetIncomeLoss	4.6	2.5	0.4	1.1	-4.4	0.4	1.3	2.3	3.0	2.4	-127.8	1.6	3.4	3.2	-0.1	2.0	2.8	3.4	2.6	1.5	3.6	8.1	5.5	4.8	4.9	5.8	2.4	4.6	5.6	5.1	28.4	100.0
Percentage of Revenues	2.0	1.0	0.3	0.5	-1.9	0.1	0.5	0.7	1.0	0.8	-19.4	0.7	1.2	1.3	-0.0	0.8	1.1	1.3	1.0	0.6	1.3	1.8	1.3	1.1	1.4	1.7	0.7	1.4	1.6	1.4	2.3	6.8
Percentage of Revenues glpi:TRSProperties	14.6	8.3	0.0	4.2	-49.3	1.4	0.0	6.6	8.5	6.8	0.0	5.3	8.7	8.8	0.0	5.5	7.6	8.5	0.0	3.9	7.1	7.2	0.0	4.4	5.9	7.2	0.0	6.0	6.4	5.6	0.0	6.8

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings

Period End	2021-06-30	2021-03-31	2020-09-30	2020-06-30	2020-03-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31
Value	138	127	127	112	96	90	93	93	45	104	91	96	93	97	96	93	93	89	73	32	29	5.317	45	47	44	49	47	44
Percentage of NetIncomeLoss	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	16.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	43.5	42.2	41.4	42.9	34.2	31.5	32.2	32.3	15.1	41.2	36.2	39.7	38.7	39.7	39.6	38.7	39.2	38.4	35.3	22.0	23.1	3.6	28.0	28.9	27.8	31.6	29.2	28.0
Percentage of Revenues us-gaap:RetainedEarnings	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	138	127	169	126	112	96	114	90	92	92	45	104	91	96	93	96	96	93	93	89	73	32	29	33	45	46	43	49	46	44	9.201	2.671	4.681	3.202
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	43.5	42.1	56.4	41.3	42.8	34.1	39.5	31.4	32.1	32.3	15.1	41.2	36.1	39.6	38.7	39.6	39.5	38.7	39.2	38.3	35.2	21.9	23.0	22.4	27.9	28.8	27.7	31.5	29.1	27.9	8.1	6.7	10.2	7.5

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	-70.359	-70.289	-70.407	-70.936	-69.206	-89.137	-72.974	-95.89	-76.275	-76.639	-77.183	-58.923	-59.637	-53.587	-53.477	-54.001	-54.17	-53.485	-53.208	-52.399	-45.282	-32.884	-33.239	-30.645	-29.0	-28.967	-28.963	-28.755	-28.44	-28.428	-19.607	-1.189	-1.38	-1.28
Percentage of NonoperatingIncomeExpense	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	-22.1	-23.3	-23.5	-23.1	-26.4	-31.4	-25.3	-33.3	-26.4	-26.6	-25.4	-23.2	-23.5	-22.0	-22.2	-22.1	-22.3	-22.0	-22.3	-22.5	-21.8	-22.1	-25.8	-20.7	-17.7	-17.8	-18.2	-18.2	-17.7	-18.0	-17.2	-3.0	-3.0	-3.0

Operating Expenses

us-gaap:OperatingExpenses

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	105	101	58	106	81	97	100	99	118	117	179	89	100	92	90	91	90	92	89	89	86	81	64	82	86	83	84	80	83	83	74	33	36	35
Percentage of OperatingExpenses	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	33.2	33.6	19.5	34.7	31.0	34.3	34.9	34.8	40.9	40.7	59.2	35.1	39.7	37.8	37.6	37.5	37.3	38.2	37.7	38.6	41.7	54.6	49.9	55.8	53.1	51.6	53.4	50.8	51.9	53.1	65.7	85.7	80.3	84.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
Value	212	200	241	200	180	186	188	187	170	170	123	164	153	151	150	152	152	150	148	143	120	67	64	65	76	78	74	77	77	74	39	5.665	9.09	6.811	4.534	8.155	14	16
Percentage of OperatingIncomeLoss	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	66.8	66.4	80.5	65.3	69.0	65.7	65.1	65.2	59.1	59.3	40.8	64.9	60.3	62.2	62.4	62.5	62.7	61.8	62.3	61.4	58.3	45.4	50.1	44.2	46.9	48.4	46.6	49.2	48.1	46.9	34.3	14.3	19.7	16.0	12.0	17.8	24.0	24.7

us-gaap:OperatingIncomeLoss us-gaap:StatementBusinessSegments

glpi:GLPCapitalLP

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	197	190	234	192	182	183	183	181	164	164	179	159	146	144	144	146	145	142	142	138	113	60	58	59	70	71	69	72	70	67	34	0.0
Percentage of OperatingIncomeLoss	93.3	95.0	97.2	95.8	100.8	98.3	97.4	97.0	96.1	96.5	144.8	96.9	95.4	95.4	96.3	96.1	95.2	94.7	95.5	96.5	94.0	89.8	91.4	91.7	91.5	90.9	93.8	93.1	90.8	91.3	88.0	0.0
Percentage of Revenues	62.3	63.1	78.2	62.5	69.5	64.6	63.4	63.3	56.8	57.3	59.2	62.8	57.5	59.4	60.0	60.0	59.7	58.5	59.5	59.3	54.8	40.8	45.8	40.5	42.9	44.0	43.7	45.8	43.7	42.9	30.2	0.0
Percentage of Revenues glpi:GLPCapitalLP	72.2	72.1	0.0	70.4	72.3	71.4	0.0	71.1	64.1	64.7	0.0	71.8	66.9	69.2	0.0	70.0	70.2	69.4	0.0	69.4	66.6	54.2	0.0	53.7	56.1	57.3	0.0	60.3	58.6	57.5	0.0	0.0

glpi:TRSProperties

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	14	9.93	6.791	8.332	-1.482	3.166	4.925	5.678	6.699	5.906	-55.553	5.156	7.108	6.977	5.622	5.968	7.295	7.972	6.767	5.036	7.271	6.867	5.561	5.395	6.558	7.2	4.583	5.334	7.155	6.463	4.684	5.665
Percentage of OperatingIncomeLoss	6.7	5.0	2.8	4.2	-0.8	1.7	2.6	3.0	3.9	3.5	-44.8	3.1	4.6	4.6	3.7	3.9	4.8	5.3	4.5	3.5	6.0	10.2	8.6	8.3	8.5	9.1	6.2	6.9	9.2	8.7	12.0	100.0
Percentage of Revenues	4.5	3.3	2.3	2.7	-0.6	1.1	1.7	2.0	2.3	2.1	-18.3	2.0	2.8	2.9	2.3	2.4	3.0	3.3	2.8	2.2	3.5	4.6	4.3	3.7	4.0	4.4	2.9	3.4	4.5	4.1	4.1	14.3
Percentage of Revenues glpi:TRSProperties	32.5	26.3	0.0	24.2	-14.9	11.8	0.0	18.0	20.1	17.9	0.0	16.2	19.8	20.1	0.0	17.0	20.1	21.0	0.0	14.8	19.7	18.7	0.0	14.9	17.0	19.0	0.0	14.1	17.4	16.1	0.0	14.3

Revenues

us-gaap:Revenues

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
Value	317	301	300	307	261	283	288	287	289	287	303	254	254	244	240	244	243	242	238	233	207	148	128	147	163	162	159	157	160	158	113	39	46	42	37	45	60	66
Percentage of Revenues	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:Revenues us-gaap:ProductOrService

glpi:Gamingfoodbeverageandother

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30
Value	43	37	31	34	9.979	26	30	31	33	32	30	31	35	34	32	35
Percentage of Revenues	13.7	12.5	10.6	11.2	3.8	9.4	10.6	11.0	11.5	11.5	9.9	12.5	14.1	14.2	13.6	14.3
Percentage of Revenues	13.7	12.5	10.6	11.2	3.8	9.4	10.6	11.0	11.5	11.5	9.9	12.5	14.1	14.2	13.6	14.3
Percentage of Revenues glpi:Gamingfoodbeverageandother	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:RealEstate

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31
Value	274	263	268	273	251	256	258	255	255	254	273	222	218	209
Percentage of Revenues	86.3	87.5	89.4	88.8	96.2	90.6	89.4	89.0	88.5	88.5	90.1	87.5	85.9	85.8
Percentage of Revenues	86.3	87.5	89.4	88.8	96.2	90.6	89.4	89.0	88.5	88.5	90.1	87.5	85.9	85.8
Percentage of Revenues us-gaap:RealEstate	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:Revenues us-gaap:StatementBusinessSegments

glpi:GLPCapitalLP

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	274	263	268	273	251	256	258	255	255	254	273	222	218	209	207	209	207	204	202	199	170	112	93	111	125	124	124	119	119	118	76	0.0
Percentage of Revenues	86.3	87.5	89.4	88.8	96.2	90.6	89.4	89.0	88.5	88.5	90.1	87.5	85.9	85.8	86.4	85.7	85.1	84.3	84.8	85.4	82.2	75.3	72.6	75.5	76.4	76.8	78.0	75.9	74.5	74.6	67.3	0.0
Percentage of Revenues	86.3	87.5	89.4	88.8	96.2	90.6	89.4	89.0	88.5	88.5	90.1	87.5	85.9	85.8	86.4	85.7	85.1	84.3	84.8	85.4	82.2	75.3	72.6	75.5	76.4	76.8	78.0	75.9	74.5	74.6	67.3	0.0
Percentage of Revenues glpi:GLPCapitalLP	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0

glpi:TRSProperties

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	43	37	31	34	9.979	26	30	31	33	32	30	31	35	34	32	35	36	38	36	34	36	36	35	36	38	37	34	37	41	40	37	39
Percentage of Revenues	13.7	12.5	10.6	11.2	3.8	9.4	10.6	11.0	11.5	11.5	9.9	12.5	14.1	14.2	13.6	14.3	14.9	15.7	15.2	14.6	17.8	24.7	27.4	24.5	23.6	23.2	22.0	24.1	25.5	25.4	32.7	100.0
Percentage of Revenues	13.7	12.5	10.6	11.2	3.8	9.4	10.6	11.0	11.5	11.5	9.9	12.5	14.1	14.2	13.6	14.3	14.9	15.7	15.2	14.6	17.8	24.7	27.4	24.5	23.6	23.2	22.0	24.1	25.5	25.4	32.7	100.0
Percentage of Revenues glpi:TRSProperties	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Assets

us-gaap:Assets

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-03-31	2012-12-31
Value	9099	9013	9034	8636	8665	8899	8434	8504	8563	8646	8577	8295	7288	7220	7246	7334	7357	7314	7369	7421	7149	2436	2448	2516	2515	2552	2564	2595	2581	2561	2609	0.0	0.0	267
Percentage of Assets	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0	100.0
Percentage of Assets	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0	100.0

us-gaap:Assets us-gaap:StatementBusinessSegments

glpi:GLPCapitalLP

Period End	2021-06-30	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2016-09-30	2016-06-30	2015-12-31	2014-12-31	2014-03-31	2013-12-31
Value	8652	8590	8299	8441	7045	7156	7211	6940	2223	2335	2324	2379
Percentage of Assets	95.1	95.1	98.4	98.4	97.2	97.1	97.2	97.1	90.8	91.1	90.7	91.2
Percentage of Assets	95.1	95.1	98.4	98.4	97.2	97.1	97.2	97.1	90.8	91.1	90.7	91.2
Percentage of Assets glpi:GLPCapitalLP	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

glpi:TRSProperties

Period End	2021-06-30	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2016-09-30	2016-06-30	2015-12-31	2014-12-31	2013-12-31
Value	446	444	135	135	201	212	209	208	224	229	229
Percentage of Assets	4.9	4.9	1.6	1.6	2.8	2.9	2.8	2.9	9.2	8.9	8.8
Percentage of Assets	4.9	4.9	1.6	1.6	2.8	2.9	2.8	2.9	9.2	8.9	8.8
Percentage of Assets glpi:TRSProperties	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Liabilities

us-gaap:Liabilities

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	6397	6366	6359	6427	6562	6886	6360	6398	6405	6439	6311	5937	4909	4803	4788	4841	4838	4907	4935	4971	4762	2695	2701	2752	2651	2678	2689	2673	2654	2629	2466	30
Percentage of Liabilities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	70.3	70.6	70.4	74.4	75.7	77.4	75.4	75.2	74.8	74.5	73.6	71.6	67.4	66.5	66.1	66.0	65.8	67.1	67.0	67.0	66.6	110.6	110.4	109.4	105.4	104.9	104.9	103.0	102.8	102.7	94.5	11.5

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	9099	9013	9034	8636	8665	8899	8434	8504	8563	8646	8577	8295	7288	7220	7246	7334	7357	7314	7369	7421	7149	2436	2448	2516	2515	2552	2564	2595	2581	2561	2609	267
Percentage of LiabilitiesAndStockholdersEquity	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Stockholders Equity

us-gaap:StockholdersEquity

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-03-31	2012-12-31	2011-12-31	2010-12-31
Value	2701	2646	2675	2209	2102	2012	2074	2106	2158	2207	2265	2358	2378	2416	2458	2493	2518	2407	2433	2449	2386	-258.815	-253.514	-236.586	-135.847	-125.54	-124.736	-77.899	-72.922	-68.028	142	0.0	0.0	236	219	215
Percentage of StockholdersEquity	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0	100.0	100.0	100.0
Percentage of Assets	29.7	29.4	29.6	25.6	24.3	22.6	24.6	24.8	25.2	25.5	26.4	28.4	32.6	33.5	33.9	34.0	34.2	32.9	33.0	33.0	33.4	-10.6	-10.4	-9.4	-5.4	-4.9	-4.9	-3.0	-2.8	-2.7	5.5	0.0	0.0	88.5	0.0	0.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31	2011-12-31	2010-12-31
Value	4354	4280	4284	3960	3955	3951	3959	3955	3951	3947	3952	3945	3935	3930	3933	3927	3916	3769	3760	3745	3647	962	935	918	910	903	888	874	869	862	3.651	71	77	100
Percentage of StockholdersEquity	161.2	161.7	160.2	179.3	188.1	196.4	190.9	187.8	183.1	178.8	174.5	167.3	165.4	162.6	160.0	157.5	155.5	156.6	154.5	152.9	152.8	-372.0	-368.9	-388.3	-670.0	-719.8	-712.6	-1122.5	-1192.9	-1268.0	2.6	30.2	35.4	46.4
Percentage of Assets	47.9	47.5	47.4	45.9	45.6	44.4	46.9	46.5	46.1	45.7	46.1	47.6	54.0	54.4	54.3	53.5	53.2	51.5	51.0	50.5	51.0	39.5	38.2	36.5	36.2	35.4	34.7	33.7	33.7	33.7	0.1	26.7	0.0	0.0
Percentage of Assets us-gaap:AdditionalPaidInCapital	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:CommonStock

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31	2011-12-31
Value	2.343	2.328	2.325	2.207	2.178	2.151	2.147	2.147	2.147	2.146	2.142	2.14	2.137	2.135	2.127	2.126	2.122	2.081	2.077	2.071	2.034	1.17	1.156	1.147	1.144	1.142	1.13	1.124	1.123	1.118	0.887	0.0	0.0
Percentage of StockholdersEquity	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	-0.5	-0.5	-0.5	-0.8	-0.9	-0.9	-1.4	-1.5	-1.6	0.6	0.0	0.0
Percentage of Assets	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0
Percentage of Assets us-gaap:CommonStock	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:RetainedEarnings

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31	2011-12-31	2010-12-31
Value	-1655.255	-1636.408	-1612.096	-1753.792	-1854.706	-1941.187	-1887.285	-1851.07	-1795.409	-1742.23	-1689.038	-1589.136	-1558.886	-1516.064	-1477.709	-1436.808	-1399.683	-1364.247	-1328.937	-1297.916	-1262.999	-1222.811	-1189.89	-1156.401	-1047.216	-1030.29	-1014.726	-953.458	-943.906	-931.734	137	164	142	115
Percentage of StockholdersEquity	-61.3	-61.8	-60.3	-79.4	-88.2	-96.5	-91.0	-87.9	-83.2	-78.9	-74.6	-67.4	-65.5	-62.7	-60.1	-57.6	-55.6	-56.7	-54.6	-53.0	-52.9	472.5	469.4	488.8	770.9	820.7	813.5	1224.0	1294.4	1369.6	96.8	69.8	64.6	53.6
Percentage of Assets	-18.2	-18.2	-17.8	-20.3	-21.4	-21.8	-22.4	-21.8	-21.0	-20.1	-19.7	-19.2	-21.4	-21.0	-20.4	-19.6	-19.0	-18.7	-18.0	-17.5	-17.7	-50.2	-48.6	-46.0	-41.6	-40.4	-39.6	-36.7	-36.6	-36.4	5.3	61.8	0.0	0.0
Percentage of Assets us-gaap:RetainedEarnings	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

Period End	2020-09-30	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2011-12-31	2010-12-31
Value	105	26	25	24	30	25	1162	144	45	29	43	29	23	36	25	23	61	41	42	31	45	35	31	41	48	285	0.0	18	0.0	14	17	18
Percentage of CashAndCashEquivalentsAtCarryingValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	0.0	100.0	100.0	100.0
Percentage of Assets	1.2	0.3	0.3	0.3	0.4	0.3	14.0	2.0	0.6	0.4	0.6	0.4	0.3	0.5	0.3	0.3	2.5	1.7	1.7	1.2	1.8	1.4	1.2	1.6	1.9	10.9	0.0	0.0	0.0	5.5	0.0	0.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2017-12-31	2016-12-31
Value	147	520	486	105	74	559	26	25	24	30	25	1162	29	36
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	1.6	5.8	5.4	1.2	0.9	6.3	0.3	0.3	0.3	0.4	0.3	14.0	0.4	0.5

Land

us-gaap:Land us-gaap:BusinessAcquisition

us-gaap:Land

glpi:TropicanaLasVegas

Period End	2021-03-31	2020-12-31	2020-09-30
Value	303	304	305
Percentage of Land	100.0	100.0	100.0
Percentage of Assets	3.4	3.4	3.5
Percentage of Assets glpi:TropicanaLasVegas	0.0	0.0	0.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	178	177	177	259	267	266	266	266	265	265	264	263	262	262	261	260	262	262	263	262	262	261	261	261	260	258	252	251	251	251	244	213
Percentage of PropertyPlantAndEquipmentGross	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	2.0	2.0	2.0	3.0	3.1	3.0	3.2	3.1	3.1	3.1	3.1	3.2	3.6	3.6	3.6	3.6	3.6	3.6	3.6	3.5	3.7	10.7	10.7	10.4	10.4	10.1	9.9	9.7	9.7	9.8	9.4	80.0

us-gaap:PropertyPlantAndEquipmentGross us-gaap:BusinessAcquisition

glpi:EvansvilleExchangeTransaction

Period End	2020-12-31
Value	257
Percentage of PropertyPlantAndEquipmentGross	145.1
Percentage of Assets	2.8
Percentage of Assets glpi:EvansvilleExchangeTransaction	0.0

glpi:IsleCasinoBettendorfIA

Period End	2020-12-31
Value	114
Percentage of PropertyPlantAndEquipmentGross	64.8
Percentage of Assets	1.3
Percentage of Assets glpi:IsleCasinoBettendorfIA	0.0

glpi:IsleCasinoWaterlooIA

Period End	2020-12-31
Value	142
Percentage of PropertyPlantAndEquipmentGross	80.3
Percentage of Assets	1.6
Percentage of Assets glpi:IsleCasinoWaterlooIA	0.0

glpi:TropicanaLasVegas

Period End	2020-12-31	2020-09-30	2020-06-30	2019-06-30
Value	307	307	307	0.0
Percentage of PropertyPlantAndEquipmentGross	173.6	118.5	115.0	0.0
Percentage of Assets	3.4	3.6	3.5	0.0
Percentage of Assets glpi:TropicanaLasVegas	0.0	0.0	0.0	0.0

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:BuildingAndBuildingImprovements

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	117	117	117	117	116	116	116	116	116	116	116	116	116	116	116	116	117	117	117	117	117	117	117	117	117	116	116	116	116	116	110	109
Percentage of PropertyPlantAndEquipmentGross	65.8	66.0	66.2	45.2	43.7	43.8	43.9	43.9	43.9	44.0	44.1	44.2	44.4	44.3	44.5	44.6	44.8	44.7	44.5	44.6	44.8	44.9	44.9	44.9	44.9	45.2	46.2	46.3	46.3	46.3	45.1	51.1
Percentage of Assets	1.3	1.3	1.3	1.4	1.3	1.3	1.4	1.4	1.4	1.4	1.4	1.4	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	4.8	4.8	4.7	4.7	4.6	4.6	4.5	4.5	4.5	4.2	40.9
Percentage of Assets us-gaap:BuildingAndBuildingImprovements	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:ConstructionInProgress

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	1.593	1.08	0.474	0.219	0.458	0.434	0.12	1.053	0.527	0.439	0.284	0.618	0.442	0.509	0.008	0.037	0.231	0.682	0.33	0.32	0.535	0.314	0.354	1.59	1.602	6.455	0.724	0.49	0.367	0.504	0.203	0.087
Percentage of PropertyPlantAndEquipmentGross	0.9	0.6	0.3	0.1	0.2	0.2	0.0	0.4	0.2	0.2	0.1	0.2	0.2	0.2	0.0	0.0	0.1	0.3	0.1	0.1	0.2	0.1	0.1	0.6	0.6	2.5	0.3	0.2	0.1	0.2	0.1	0.0
Percentage of Assets	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.1	0.1	0.3	0.0	0.0	0.0	0.0	0.0	0.0
Percentage of Assets us-gaap:ConstructionInProgress	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:FurnitureAndFixtures

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	28	28	28	111	119	119	118	117	118	117	117	116	115	115	114	114	113	113	114	113	113	112	112	110	110	103	103	103	103	102	101	76
Percentage of PropertyPlantAndEquipmentGross	16.2	16.2	16.2	43.0	44.7	44.6	44.6	44.3	44.4	44.3	44.3	44.0	43.9	43.9	44.0	43.7	43.3	43.3	43.6	43.4	43.1	43.1	43.0	42.4	42.3	40.1	41.0	41.0	41.0	40.9	41.3	35.6
Percentage of Assets	0.3	0.3	0.3	1.3	1.4	1.3	1.4	1.4	1.4	1.4	1.4	1.4	1.6	1.6	1.6	1.6	1.5	1.6	1.6	1.5	1.6	4.6	4.6	4.4	4.4	4.1	4.0	4.0	4.0	4.0	3.9	28.5
Percentage of Assets us-gaap:FurnitureAndFixtures	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:LandAndLandImprovements

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	31	31	31	31	31	31	31	31	31	31	33	28
Percentage of PropertyPlantAndEquipmentGross	17.2	17.2	17.2	11.8	11.4	11.4	11.5	11.4	11.5	11.5	11.5	11.5	11.5	11.5	11.6	11.6	11.8	11.8	11.7	11.8	11.9	11.9	11.9	12.1	12.1	12.2	12.5	12.6	12.6	12.6	13.5	13.2
Percentage of Assets	0.3	0.3	0.3	0.4	0.4	0.3	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	1.3	1.3	1.3	1.3	1.2	1.2	1.2	1.2	1.2	1.3	10.6
Percentage of Assets us-gaap:LandAndLandImprovements	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	99	97	96	170	176	174	172	170	168	166	163	161	158	156	153	150	147	146	144	140	137	134	131	129	125	122	118	115	112	109	105	94
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	1.1	1.1	1.1	2.0	2.0	2.0	2.0	2.0	2.0	1.9	1.9	1.9	2.2	2.2	2.1	2.1	2.0	2.0	2.0	1.9	1.9	5.5	5.4	5.1	5.0	4.8	4.6	4.5	4.4	4.3	4.1	35.4

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:BusinessAcquisition

glpi:TropicanaLasVegas

Period End	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-06-30
Value	0.9	2.7	1.727	0.8	0.9	0.0
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	0.9	2.8	1.0	0.5	0.5	0.0
Percentage of Assets	0.0	0.0	0.0	0.0	0.0	0.0
Percentage of Assets glpi:TropicanaLasVegas	0.0	0.0	0.0	0.0	0.0	0.0

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

Period End	2020-09-30	2019-09-30	2019-03-31
Value	3.021	3.02	3.09
Percentage of AmortizationOfIntangibleAssets	100.0	100.0	100.0
Percentage of Assets	0.0	0.0	0.0

us-gaap:AmortizationOfIntangibleAssets us-gaap:FairValueByAssetClass

glpi:LandRights

Period End	2021-06-30	2021-03-31	2020-06-30	2020-03-31	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30
Value	3.006	2.843	3.02	3.02	6.04	3.09	3.1	2.7	2.7
Percentage of AmortizationOfIntangibleAssets	0.0	0.0	0.0	0.0	0.0	100.0	0.0	0.0	0.0
Percentage of Assets	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0
Percentage of Assets glpi:LandRights	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	79	79	80	89	90	92	94	95	97	98	100	102	104	106	108	110	114	116	119	121	124	126	129	131	134	136	134	136	139	141	139	118
Percentage of PropertyPlantAndEquipmentNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	0.9	0.9	0.9	1.0	1.0	1.0	1.1	1.1	1.1	1.1	1.2	1.2	1.4	1.5	1.5	1.5	1.6	1.6	1.6	1.6	1.7	5.2	5.3	5.2	5.4	5.3	5.2	5.2	5.4	5.5	5.3	44.5

us-gaap:PropertyPlantAndEquipmentNet us-gaap:BusinessAcquisition

glpi:TropicanaLasVegas

Period End	2020-12-31	2020-09-30	2020-06-30	2019-06-30
Value	304	305	306	0.0
Percentage of PropertyPlantAndEquipmentNet	378.1	342.3	337.5	0.0
Percentage of Assets	3.4	3.5	3.5	0.0
Percentage of Assets glpi:TropicanaLasVegas	0.0	0.0	0.0	0.0

Goodwill

us-gaap:Goodwill

Period End	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	16	16	16	16	16	16	16	16	75	75	75	75	75	75	75	75	75	75	75	75	75	75	75	75	75	75	75	75	75
Percentage of Goodwill	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.9	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.1	3.1	3.1	3.0	3.0	3.0	2.9	2.9	2.9	2.9	2.9	28.3

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31	2012-12-31
Value	5331000.0	5777000.0	4917000.0	4234000.0	3657000.0	2215000.0	1251000.0	-2054000.0	-5558000.0
Percentage of DeferredTaxAssetsLiabilitiesNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	0.1	0.1	0.1	0.1	0.0	0.1	0.0	-0.1	-2.1

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	865	765	769	828	831	835	838	859	862	872
Percentage of OperatingLeaseRightOfUseAsset	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	9.5	8.5	8.5	9.6	9.6	9.4	9.9	10.1	10.1	10.1

us-gaap:OperatingLeaseRightOfUseAsset us-gaap:BalanceSheetLocation

glpi:AssetsHeldForSale

Period End	2021-06-30	2021-03-31	2020-12-31
Value	0.9	0.1	0.3
Percentage of OperatingLeaseRightOfUseAsset	0.1	0.0	0.0
Percentage of Assets	0.0	0.0	0.0
Percentage of Assets glpi:AssetsHeldForSale	0.0	0.0	0.0

us-gaap:OperatingLeaseRightOfUseAsset us-gaap:BusinessAcquisition

glpi:TropicanaEvansvilleIN

Period End	2020-12-31
Value	55
Percentage of OperatingLeaseRightOfUseAsset	7.2
Percentage of Assets	0.6
Percentage of Assets glpi:TropicanaEvansvilleIN	0.0

us-gaap:OperatingLeaseRightOfUseAsset us-gaap:FairValueByAssetClass

glpi:LandRights

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	679	615	617	645	648	651	654	657	660	670
Percentage of OperatingLeaseRightOfUseAsset	78.5	80.3	80.3	78.0	78.0	78.0	78.1	76.5	76.6	76.8
Percentage of Assets	7.5	6.8	6.8	7.5	7.5	7.3	7.8	7.7	7.7	7.7
Percentage of Assets glpi:LandRights	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

glpi:OperatingLeaseRightofUseAssetsExcludingLandRights

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	185	150	151	182	182	183	184	201	202	202
Percentage of OperatingLeaseRightOfUseAsset	21.5	19.7	19.7	22.0	22.0	22.0	21.9	23.5	23.4	23.2
Percentage of Assets	2.0	1.7	1.7	2.1	2.1	2.1	2.2	2.4	2.4	2.3
Percentage of Assets glpi:OperatingLeaseRightofUseAssetsExcludingLandRights	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Other Assets

us-gaap:OtherAssets

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2015-12-31
Value	36	34	36	34	32	26	34	31	30	31	67	99	76	64	58	80	72	67	50	58
Percentage of OtherAssets	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	0.4	0.4	0.4	0.4	0.4	0.3	0.4	0.4	0.4	0.4	0.8	1.2	1.1	0.9	0.8	1.1	1.0	0.9	0.7	2.4

Taxes Payable Current

us-gaap:TaxesPayableCurrent

Period End	2021-03-31
Value	1922000.0
Percentage of TaxesPayableCurrent	100.0
Percentage of Assets	0.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2017-12-31
Value	380000.0	399000.0	359000.0	334000.0	307000.0	332000.0	279000.0	262000.0	233000.0	258000.0	261000.0	244000.0
Percentage of DeferredIncomeTaxLiabilitiesNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	13	11	11	13
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	100.0	100.0	100.0	100.0
Percentage of Assets	0.2	0.1	0.1	0.2

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	13	11	11	13
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree	100.0	100.0	100.0	100.0
Percentage of Assets	0.1	0.1	0.1	0.2

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	13	11	11	13
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour	100.0	100.0	100.0	100.0
Percentage of Assets	0.1	0.1	0.1	0.2

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

Period End	2021-03-31	2020-12-31	2020-09-30
Value	10	10	13
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive	100.0	100.0	100.0
Percentage of Assets	0.1	0.1	0.2

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

Period End	2021-03-31	2020-12-31	2020-09-30
Value	569	569	644
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	100.0	100.0	100.0
Percentage of Assets	6.3	6.3	7.5

Operating Lease Liability

us-gaap:OperatingLeaseLiability

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	186	151	152	182	182	183	183	201	202	202
Percentage of OperatingLeaseLiability	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	2.1	1.7	1.7	2.1	2.1	2.1	2.2	2.4	2.4	2.3

us-gaap:OperatingLeaseLiability us-gaap:BusinessAcquisition

glpi:TropicanaEvansvilleIN

Period End	2020-12-31
Value	29
Percentage of OperatingLeaseLiability	19.6
Percentage of Assets	0.3
Percentage of Assets glpi:TropicanaEvansvilleIN	0.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	691	622	625	702
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue	100.0	100.0	100.0	100.0
Percentage of Assets	7.6	6.9	6.9	8.1

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	504	470	473	519
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	100.0	100.0	100.0	100.0
Percentage of Assets	5.5	5.2	5.2	6.0

Stockholders Equity

us-gaap:StockholdersEquity

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-03-31	2012-12-31	2011-12-31	2010-12-31
Value	2701	2646	2675	2209	2102	2012	2074	2106	2158	2207	2265	2358	2378	2416	2458	2493	2518	2407	2433	2449	2386	-258.815	-253.514	-236.586	-135.847	-125.54	-124.736	-77.899	-72.922	-68.028	142	0.0	0.0	236	219	215
Percentage of StockholdersEquity	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0	100.0	100.0	100.0
Percentage of Assets	29.7	29.4	29.6	25.6	24.3	22.6	24.6	24.8	25.2	25.5	26.4	28.4	32.6	33.5	33.9	34.0	34.2	32.9	33.0	33.0	33.4	-10.6	-10.4	-9.4	-5.4	-4.9	-4.9	-3.0	-2.8	-2.7	5.5	0.0	0.0	88.5	0.0	0.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31	2011-12-31	2010-12-31
Value	4354	4280	4284	3960	3955	3951	3959	3955	3951	3947	3952	3945	3935	3930	3933	3927	3916	3769	3760	3745	3647	962	935	918	910	903	888	874	869	862	3.651	71	77	100
Percentage of StockholdersEquity	161.2	161.7	160.2	179.3	188.1	196.4	190.9	187.8	183.1	178.8	174.5	167.3	165.4	162.6	160.0	157.5	155.5	156.6	154.5	152.9	152.8	-372.0	-368.9	-388.3	-670.0	-719.8	-712.6	-1122.5	-1192.9	-1268.0	2.6	30.2	35.4	46.4
Percentage of Assets	47.9	47.5	47.4	45.9	45.6	44.4	46.9	46.5	46.1	45.7	46.1	47.6	54.0	54.4	54.3	53.5	53.2	51.5	51.0	50.5	51.0	39.5	38.2	36.5	36.2	35.4	34.7	33.7	33.7	33.7	0.1	26.7	0.0	0.0
Percentage of Assets us-gaap:AdditionalPaidInCapital	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:CommonStock

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31	2011-12-31
Value	2.343	2.328	2.325	2.207	2.178	2.151	2.147	2.147	2.147	2.146	2.142	2.14	2.137	2.135	2.127	2.126	2.122	2.081	2.077	2.071	2.034	1.17	1.156	1.147	1.144	1.142	1.13	1.124	1.123	1.118	0.887	0.0	0.0
Percentage of StockholdersEquity	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	-0.5	-0.5	-0.5	-0.8	-0.9	-0.9	-1.4	-1.5	-1.6	0.6	0.0	0.0
Percentage of Assets	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0
Percentage of Assets us-gaap:CommonStock	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:RetainedEarnings

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31	2011-12-31	2010-12-31
Value	-1655.255	-1636.408	-1612.096	-1753.792	-1854.706	-1941.187	-1887.285	-1851.07	-1795.409	-1742.23	-1689.038	-1589.136	-1558.886	-1516.064	-1477.709	-1436.808	-1399.683	-1364.247	-1328.937	-1297.916	-1262.999	-1222.811	-1189.89	-1156.401	-1047.216	-1030.29	-1014.726	-953.458	-943.906	-931.734	137	164	142	115
Percentage of StockholdersEquity	-61.3	-61.8	-60.3	-79.4	-88.2	-96.5	-91.0	-87.9	-83.2	-78.9	-74.6	-67.4	-65.5	-62.7	-60.1	-57.6	-55.6	-56.7	-54.6	-53.0	-52.9	472.5	469.4	488.8	770.9	820.7	813.5	1224.0	1294.4	1369.6	96.8	69.8	64.6	53.6
Percentage of Assets	-18.2	-18.2	-17.8	-20.3	-21.4	-21.8	-22.4	-21.8	-21.0	-20.1	-19.7	-19.2	-21.4	-21.0	-20.4	-19.6	-19.0	-18.7	-18.0	-17.5	-17.7	-50.2	-48.6	-46.0	-41.6	-40.4	-39.6	-36.7	-36.6	-36.4	5.3	61.8	0.0	0.0
Percentage of Assets us-gaap:RetainedEarnings	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Common Stock Value

us-gaap:CommonStockValue

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-03-31
Value	2343000.0	2328000.0	2325000.0	2207000.0	2178000.0	2151000.0	2147000.0	2147000.0	2147000.0	2146000.0	2142000.0	2140000.0	2137000.0	2135000.0	2127000.0	2126000.0	2122000.0	2081000.0	2077000.0	2071000.0	2034000.0	1170000.0	1156000.0	1147000.0	1144000.0	1142000.0	1130000.0	1124000.0	1123000.0	1118000.0	887000.0	0	0
Percentage of CommonStockValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0
Percentage of Assets	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-03-31	2012-12-31
Value	4354	4280	4284	3960	3955	3951	3959	3955	3951	3947	3952	3945	3935	3930	3933	3927	3916	3769	3760	3745	3647	962	935	918	910	903	888	874	869	862	3.651	0.0	0.0	71
Percentage of AdditionalPaidInCapitalCommonStock	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0	100.0
Percentage of Assets	47.9	47.5	47.4	45.9	45.6	44.4	46.9	46.5	46.1	45.7	46.1	47.6	54.0	54.4	54.3	53.5	53.2	51.5	51.0	50.5	51.0	39.5	38.2	36.5	36.2	35.4	34.7	33.7	33.7	33.7	0.1	0.0	0.0	26.7

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	-1655.255	-1636.408	-1612.096	-1753.792	-1854.706	-1941.187	-1887.285	-1851.07	-1795.409	-1742.23	-1689.038	-1589.136	-1558.886	-1516.064	-1477.709	-1436.808	-1399.683	-1364.247	-1328.937	-1297.916	-1262.999	-1222.811	-1189.89	-1156.401	-1047.216	-1030.29	-1014.726	-953.458	-943.906	-931.734	137	164
Percentage of RetainedEarningsAccumulatedDeficit	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	-18.2	-18.2	-17.8	-20.3	-21.4	-21.8	-22.4	-21.8	-21.0	-20.1	-19.7	-19.2	-21.4	-21.0	-20.4	-19.6	-19.0	-18.7	-18.0	-17.5	-17.7	-50.2	-48.6	-46.0	-41.6	-40.4	-39.6	-36.7	-36.6	-36.4	5.3	61.8

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31
Value	197	205	117	80	30	198	166	219	142	221	136	212	119	185	109
Percentage of NetCashProvidedByUsedInOperatingActivities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	62.1	68.1	39.2	26.3	11.8	70.1	57.7	76.4	49.4	76.9	44.9	83.7	47.2	76.1	45.5

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31
Value	-488.784	-1.044	-7.873	-0.48	-0.488	-0.646	-0.771	-0.689	-1.009	-0.348	-1531.645	-5.607	10	17	17
Percentage of NetCashProvidedByUsedInInvestingActivities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	-153.8	-0.3	-2.6	-0.2	-0.2	-0.2	-0.3	-0.2	-0.3	-0.1	-505.0	-2.2	4.0	7.1	7.3

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31
Value	-86.774	-161.38	293	-48.494	-515.935	334	-164.578	-218.099	-147.244	-216.524	258	811	-30.895	-186.777	-141.829
Percentage of NetCashProvidedByUsedInFinancingActivities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	-27.3	-53.5	97.6	-15.8	-196.9	118.0	-57.0	-75.8	-50.9	-75.2	85.2	319.2	-12.2	-76.5	-58.9

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31
Value	-338.857	34	380	31	47	532	1.267	0.817	-5.595	4.551	-1136.991
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	-106.6	11.4	126.8	10.4	18.0	187.9	0.4	0.3	-1.9	1.6	-374.9

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	-107000.0	188000.0	535000.0	934000.0	-1056000.0	38000.0	-227000.0	-62000.0	-218000.0	-248000.0	-223000.0	-182000.0	-281000.0	164000.0	1385000.0	-666000.0	-538000.0	-742000.0	-538000.0	-173000.0	-745000.0	-79000.0	1366000.0	-642000.0	-1151000.0	-386000.0	-160000.0	-1226000.0	-1021000.0	-898000.0	-3095000.0	-2178000.0	-501000.0	128000.0
Percentage of DeferredIncomeTaxExpenseBenefit	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30
Value	61	61	61	61	60	59	59	60	77	61	57	29	30	30	30	31	31	30	30	29	28	27	27	27
Percentage of DepreciationDepletionAndAmortization	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	1.132	-0.128	-1.088	-0.282	0.785	-0.667	0.84	-0.005	-0.531	-1.809	0.66	1.39	-0.029	-0.225	0.28	0.003	-0.523	-0.181	0.449	0.302	-0.29	0.045	-0.962	0.681	0.68	-1.345	-0.17	-9.663	8.14	0.043	2.264	0.239	-0.042	0.177
Percentage of IncreaseDecreaseInAccountsPayable	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31
Value	197	205	117	80	30	198	166	219	142	221	136	212	119	185	109
Percentage of NetCashProvidedByUsedInOperatingActivities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	62.1	68.1	39.2	26.3	11.8	70.1	57.7	76.4	49.4	76.9	44.9	83.7	47.2	76.1	45.5

Net Income Loss

us-gaap:NetIncomeLoss

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31
Value	138	127	169	127	112	96	114	90	93	93	45	104	91	96	93	97	96	93	93	89	73	32	29	33	45	47	44	49	47	44	9.234	2.681	4.699	3.216	2.106	4.53	7.618	8.665
Percentage of NetIncomeLoss	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	43.5	42.2	56.4	41.3	42.9	34.2	39.5	31.5	32.2	32.3	15.1	41.2	36.2	39.7	38.7	39.7	39.6	38.7	39.2	38.4	35.3	22.0	23.1	22.5	28.0	28.9	27.8	31.6	29.2	28.0	8.1	6.8	10.2	7.5	5.6	9.9	12.6	13.0

us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments

glpi:GLPCapitalLP

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	131	124	168	125	117	96	112	88	90	90	104	103	88	93	93	95	93	90	91	88	70	30	28	31	43	44	43	47	44	42	6.612	0.0
Percentage of NetIncomeLoss	95.4	97.5	99.6	98.9	104.4	99.6	98.7	97.7	97.0	97.6	227.8	98.4	96.6	96.8	100.1	98.0	97.2	96.6	97.4	98.5	96.4	91.9	94.5	95.2	95.1	94.2	97.6	95.4	94.4	94.9	71.6	0.0
Percentage of Revenues	41.5	41.1	56.2	40.9	44.8	34.0	39.0	30.8	31.2	31.5	34.5	40.6	35.0	38.4	38.8	38.9	38.5	37.4	38.2	37.8	34.1	20.2	21.9	21.4	26.7	27.3	27.1	30.2	27.6	26.6	5.8	0.0
Percentage of Revenues glpi:GLPCapitalLP	48.1	47.0	62.8	46.0	46.5	37.6	43.6	34.6	35.3	35.6	38.3	46.4	40.7	44.8	44.9	45.4	45.2	44.3	45.1	44.3	41.5	26.9	30.1	28.4	34.9	35.5	34.7	39.7	37.1	35.6	8.6	0.0

glpi:TRSProperties

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	6.375	3.136	0.756	1.44	-4.918	0.373	1.528	2.086	2.836	2.247	-58.698	1.689	3.128	3.056	-0.115	1.925	2.744	3.212	2.413	1.339	2.61	2.648	1.636	1.603	2.261	2.708	1.049	2.278	2.632	2.268	2.624	2.681
Percentage of NetIncomeLoss	4.6	2.5	0.4	1.1	-4.4	0.4	1.3	2.3	3.0	2.4	-127.8	1.6	3.4	3.2	-0.1	2.0	2.8	3.4	2.6	1.5	3.6	8.1	5.5	4.8	4.9	5.8	2.4	4.6	5.6	5.1	28.4	100.0
Percentage of Revenues	2.0	1.0	0.3	0.5	-1.9	0.1	0.5	0.7	1.0	0.8	-19.4	0.7	1.2	1.3	-0.0	0.8	1.1	1.3	1.0	0.6	1.3	1.8	1.3	1.1	1.4	1.7	0.7	1.4	1.6	1.4	2.3	6.8
Percentage of Revenues glpi:TRSProperties	14.6	8.3	2.4	4.2	-49.3	1.4	5.0	6.6	8.5	6.8	-194.6	5.3	8.7	8.8	-0.4	5.5	7.6	8.5	6.6	3.9	7.1	7.2	4.6	4.4	5.9	7.2	3.0	6.0	6.4	5.6	7.1	6.8

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings

Period End	2021-06-30	2021-03-31	2020-09-30	2020-06-30	2020-03-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31
Value	138	127	127	112	96	90	93	93	45	104	91	96	93	97	96	93	93	89	73	32	29	5.317	45	47	44	49	47	44
Percentage of NetIncomeLoss	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	16.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	43.5	42.2	41.4	42.9	34.2	31.5	32.2	32.3	15.1	41.2	36.2	39.7	38.7	39.7	39.6	38.7	39.2	38.4	35.3	22.0	23.1	3.6	28.0	28.9	27.8	31.6	29.2	28.0
Percentage of Revenues us-gaap:RetainedEarnings	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Share Based Compensation

us-gaap:ShareBasedCompensation

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31
Value	3.612	5.788	3.352	8.353	4.064	4.235	3.845	3.845	4.183	4.325	3.274	3.275	0.616	3.987	3.685	3.695	3.773	4.483	4.508	4.641	4.591	4.572	4.153	4.153	4.111	4.394	3.635	3.536	3.136	1.951	1.566
Percentage of ShareBasedCompensation	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31
Value	-488.784	-1.044	-7.873	-0.48	-0.488	-0.646	-0.771	-0.689	-1.009	-0.348	-1531.645	-5.607	10	17	17
Percentage of NetCashProvidedByUsedInInvestingActivities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	-153.8	-0.3	-2.6	-0.2	-0.2	-0.2	-0.3	-0.2	-0.3	-0.1	-505.0	-2.2	4.0	7.1	7.3

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

Period End	2021-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	0.606	0.0	0.0	0.0	0.0	0.0	0.006	0.014	0.0	0.0	0.01	0.06	0.008	0.007	0.054	0.004	0.265	2.45	2.949	5.11	5.64	14	69	31	24	11	0.103	0.476	0.078
Percentage of PaymentsToAcquirePropertyPlantAndEquipment	100.0	0.0	0.0	0.0	0.0	0.0	100.0	100.0	0.0	0.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment us-gaap:StatementBusinessSegments

glpi:TRSProperties

Period End	2021-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	0.606	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.101	0.0	0.0	0.866	5.031	0.0	0.0	0.0	0.0	-1.501	0.103
Percentage of PaymentsToAcquirePropertyPlantAndEquipment	100.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	38.1	0.0	0.0	16.9	89.2	0.0	0.0	0.0	0.0	-13.0	100.0

Payments To Acquire Productive Assets

us-gaap:PaymentsToAcquireProductiveAssets

Period End	2021-06-30	2021-03-31	2014-06-30	2014-03-31	2013-06-30	2013-03-31
Value	0.514	0.606	31	24	0.476	0.078
Percentage of PaymentsToAcquireProductiveAssets	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:PaymentsToAcquireProductiveAssets us-gaap:BusinessAcquisition

glpi:BallysTropicanaEvansvilleDoverDowns

Period End	2021-06-03
Value	487
Percentage of PaymentsToAcquireProductiveAssets	0.0

glpi:TropicanaEntertainment

Period End	2020-12-18
Value	5.7
Percentage of PaymentsToAcquireProductiveAssets	0.0

us-gaap:PaymentsToAcquireProductiveAssets us-gaap:StatementBusinessSegments

glpi:TRSProperties

Period End	2021-06-30
Value	0.514
Percentage of PaymentsToAcquireProductiveAssets	100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31
Value	-86.774	-161.38	293	-48.494	-515.935	334	-164.578	-218.099	-147.244	-216.524	258	811	-30.895	-186.777	-141.829
Percentage of NetCashProvidedByUsedInFinancingActivities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Revenues	-27.3	-53.5	97.6	-15.8	-196.9	118.0	-57.0	-75.8	-50.9	-75.2	85.2	319.2	-12.2	-76.5	-58.9

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

Period End	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2016-12-31	2016-09-30	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31
Value	0.0	207	694	1174	46	1157	93	62	486	1107	1000	0.0	0.0	0.0	50	165	0.0	0.0	0.0	0.0	63	20	25	182	2350
Percentage of ProceedsFromIssuanceOfLongTermDebt	0.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0	0.0	100.0	100.0	0.0	0.0	0.0	0.0	100.0	100.0	100.0	100.0	100.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31
Value	0.034	0.033	0.034	225	1174	661	60	1200	94	123	84	156	878	45	10	75	155	95	50	20	265	42	0.025	25	10	33	0.024	0.0	0.0	32	0.0
Percentage of RepaymentsOfLongTermDebt	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0	100.0	0.0

Payments Of Dividends

us-gaap:PaymentsOfDividends

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31
Value	157	151	27	26	25	150	150	146	146	146	145	135	134	134	134	134	131	129	124	124	113	65	63	62	62	62	105	59	59	270	0.0
Percentage of PaymentsOfDividends	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0

Dividends

us-gaap:Dividends

Period End	2021-06-30	2021-03-31	2020-09-30	2020-06-30	2020-03-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31
Value	157	151	26	25	150	146	146	146	145	135	134	134	134	134	131	129	124	124	113	65	63	62	62	62
Percentage of Dividends	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:Dividends us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

Period End	2020-09-30	2020-06-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31
Value	0.028	0.027	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0
Percentage of Dividends	0.1	0.1	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:CommonStock

Period End	2020-09-30	2020-06-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31
Value	-0.028	-0.027	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0
Percentage of Dividends	-0.1	-0.1	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:RetainedEarnings

Period End	2021-06-30	2021-03-31	2020-09-30	2020-06-30	2020-03-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31
Value	157	151	26	25	150	146	146	146	145	135	134	134	134	134	131	129	124	124	113	65	63	62	62	62
Percentage of Dividends	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31	2012-12-31
Value	2.369	2.26	2.217	2.186	3.816	4.324	1.443	4.282	8.417
Percentage of DeferredTaxLiabilities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

Period End	2020-12-31	2019-12-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	7.7	8.037	7.134	4.973	4.769	4.51	6.42	7.473	6.539	2.694	1.933	1.927	2.228	2.859
Percentage of DeferredTaxAssetsNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

Period End	2020-12-31
Value	1731000.0
Percentage of DeferredTaxAssetsValuationAllowance	100.0

glpi:ATMProgramofferingcosts

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31
Value	-70323000.0	95000.0	-320700000.0	50000.0	83000.0	-310000.0	16000.0	239000.0	0	0	0
Percentage of ATMProgramofferingcosts	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0	0.0

glpi:AdjustmentstoAdditionalPaidinCapitalATMProgramOfferingCosts

Period End	2020-09-30	2020-06-30	2019-09-30
Value	50000.0	83000.0	239000.0
Percentage of AdjustmentstoAdditionalPaidinCapitalATMProgramOfferingCosts	100.0	100.0	100.0

glpi:AdjustmentstoAdditionalPaidinCapitalATMProgramOfferingCosts us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

Period End	2020-09-30	2020-06-30	2019-09-30
Value	50000.0	83000.0	239000.0
Percentage of AdjustmentstoAdditionalPaidinCapitalATMProgramOfferingCosts	100.0	100.0	100.0

glpi:AssetAcquisitionRentCreditsTransferred us-gaap:LeaseArrangementType

glpi:AssetAcquisitionRentCreditsTransferred

glpi:MorgantownLease

Period End	2020-12-31
Value	30
Percentage of AssetAcquisitionRentCreditsTransferred	100.0

glpi:AssetAcquisitionRentCreditsTransferred us-gaap:LeaseContractualTerm

glpi:MorgantownLease

Period End	2021-03-31
Value	30
Percentage of AssetAcquisitionRentCreditsTransferred	0.0

glpi:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseAssetsHeldForSale

Period End	2021-06-30	2021-03-31
Value	-3446000.0	-8495000.0
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseAssetsHeldForSale	100.0	100.0

glpi:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffectWithinAssetsHeldForSale

Period End	2021-06-30	2021-03-31	2020-06-30	2020-03-31
Value	-378.195	42	-485.495	532
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffectWithinAssetsHeldForSale	100.0	100.0	100.0	100.0

glpi:LandRightsandGroundLeaseExpense

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31
Value	8.191	6.733	7.098	8.084	5.781	8.078	8.866	9.094	15	9.249	8.898	6.484	6.444	6.532	6.378	6.417	6.035	5.175
Percentage of LandRightsandGroundLeaseExpense	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

glpi:LessorOperatingLeaseAnnualPaymentsToBeReceived us-gaap:BusinessAcquisition

glpi:LessorOperatingLeaseAnnualPaymentsToBeReceived

glpi:Morgantown

Period End	2020-10-01
Value	3.0
Percentage of LessorOperatingLeaseAnnualPaymentsToBeReceived	100.0

glpi:TwinRiverWorldwideHoldingsInc

Period End	2021-04-13
Value	12
Percentage of LessorOperatingLeaseAnnualPaymentsToBeReceived	0.0

glpi:LessorOperatingLeaseAnnualPaymentsToBeReceived us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

glpi:Morgantown, us-gaap:SubsequentEvent

Period End	2020-10-01
Value	3.0
Percentage of LessorOperatingLeaseAnnualPaymentsToBeReceived	100.0

glpi:TwinRiverWorldwideHoldingsInc, us-gaap:SubsequentEvent

Period End	2021-04-13
Value	12
Percentage of LessorOperatingLeaseAnnualPaymentsToBeReceived	0.0

glpi:LessorOperatingLeaseAnnualPaymentsToBeReceived us-gaap:LeaseArrangementType

glpi:TwinRiverMasterLease

Period End	2020-10-27
Value	40
Percentage of LessorOperatingLeaseAnnualPaymentsToBeReceived	0.0

glpi:LessorOperatingLeaseAnnualPaymentsToBeReceived us-gaap:LeaseArrangementType, us-gaap:SubsequentEventType

glpi:TwinRiverMasterLease, us-gaap:SubsequentEvent

Period End	2021-04-13	2020-10-27
Value	10	40
Percentage of LessorOperatingLeaseAnnualPaymentsToBeReceived	0.0	0.0

glpi:LessorOperatingLeaseAnnualPaymentsToBeReceived us-gaap:LeaseContractualTerm

glpi:TwinRiverMasterLease

Period End	2021-04-13
Value	10
Percentage of LessorOperatingLeaseAnnualPaymentsToBeReceived	0.0

glpi:LessorOperatingLeaseTotalRentToBeReceived us-gaap:LeaseArrangementType, us-gaap:SubsequentEventType

glpi:LessorOperatingLeaseTotalRentToBeReceived

glpi:TwinRiverMasterLease, us-gaap:SubsequentEvent

Period End	2021-04-13
Value	500
Percentage of LessorOperatingLeaseTotalRentToBeReceived	100.0

glpi:LessorOperatingLeaseTotalRentToBeReceived us-gaap:LeaseContractualTerm

glpi:TwinRiverMasterLease

Period End	2021-04-13
Value	500
Percentage of LessorOperatingLeaseTotalRentToBeReceived	100.0

glpi:NoncashOrPartNoncashAcquisitionGainLossOnAssetsAcquired us-gaap:LeaseArrangementType

glpi:NoncashOrPartNoncashAcquisitionGainLossOnAssetsAcquired

glpi:AmendedAndRestatedCaesarsMasterLease

Period End	2020-12-31
Value	-41.4
Percentage of NoncashOrPartNoncashAcquisitionGainLossOnAssetsAcquired	100.0

glpi:NoncashOrPartNoncashAcquisitionGainLossOnAssetsAcquired us-gaap:LeaseContractualTerm

glpi:AmendedAndRestatedCaesarsMasterLease

Period End	2020-12-31
Value	41
Percentage of NoncashOrPartNoncashAcquisitionGainLossOnAssetsAcquired	-100.0

glpi:OperatingLeaseCashRentReceived

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30
Value	268	259	263	258	245	253	254	251	251
Percentage of OperatingLeaseCashRentReceived	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

glpi:OperatingLeaseCashRentReceived us-gaap:LeaseArrangementType

glpi:VariableRentIncome

Period End	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30
Value	35	35	42	31	38	39	39	40
Percentage of OperatingLeaseCashRentReceived	13.9	13.6	16.5	12.8	15.2	15.6	15.7	15.9

glpi:OperatingLeaseCashRentReceived us-gaap:LeaseArrangementType, us-gaap:PropertyPlantAndEquipmentByType

glpi:AmendedAndRestatedCaesarsMasterLease, us-gaap:Building

Period End	2020-12-18	2020-06-15
Value	62	62
Percentage of OperatingLeaseCashRentReceived	0.0	0.0

glpi:AmendedAndRestatedCaesarsMasterLease, us-gaap:Land

Period End	2020-12-18	2020-06-15
Value	23	23
Percentage of OperatingLeaseCashRentReceived	0.0	0.0

glpi:BaseRentIncome, us-gaap:Building

Period End	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30
Value	172	176	167	165	167	167	164	164
Percentage of OperatingLeaseCashRentReceived	66.4	66.9	64.8	67.6	66.0	65.7	65.4	65.2

glpi:BaseRentIncome, us-gaap:Land

Period End	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30
Value	51	51	48	47	47	47	47	47
Percentage of OperatingLeaseCashRentReceived	19.8	19.5	18.6	19.5	18.8	18.7	18.9	18.9

glpi:OperatingLeaseCashRentReceived us-gaap:LeaseContractualTerm

us-gaap:PropertySubjectToOperatingLease

Period End	2021-06-30
Value	39
Percentage of OperatingLeaseCashRentReceived	14.7

glpi:OperatingLeaseCashRentReceived us-gaap:LeaseContractualTerm, us-gaap:PropertyPlantAndEquipmentByType

glpi:AmendedAndRestatedCaesarsMasterLease, us-gaap:Building

Period End	2020-12-18	2020-06-15
Value	62	62
Percentage of OperatingLeaseCashRentReceived	0.0	0.0

glpi:AmendedAndRestatedCaesarsMasterLease, us-gaap:Land

Period End	2020-12-18	2020-06-15
Value	23	23
Percentage of OperatingLeaseCashRentReceived	0.0	0.0

us-gaap:PropertySubjectToOperatingLease, us-gaap:Building

Period End	2021-06-30
Value	177
Percentage of OperatingLeaseCashRentReceived	66.2

us-gaap:PropertySubjectToOperatingLease, us-gaap:Land

Period End	2021-06-30
Value	51
Percentage of OperatingLeaseCashRentReceived	19.1

glpi:OperatingLeaseGroundLeaseIncome

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2019-09-30	2019-06-30
Value	4.259	3.111	3.666	4.476	2.272	5.406	5.188
Percentage of OperatingLeaseGroundLeaseIncome	100.0	100.0	100.0	100.0	100.0	100.0	100.0

glpi:OperatingLeaseOtherRentalRevenue

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2019-09-30	2019-06-30
Value	75000.0	50000.0	31000.0	34000.0	50000.0	90000.0	143000.0
Percentage of OperatingLeaseOtherRentalRevenue	100.0	100.0	100.0	100.0	100.0	100.0	100.0

glpi:OperatingLeasesAnnualRentEscalatorOveraPeriodofTimeContingentUpontheAchievementofCertainRentCoverageRatioThresholdPercentage us-gaap:LeaseArrangementType

glpi:OperatingLeasesAnnualRentEscalatorOveraPeriodofTimeContingentUpontheAchievementofCertainRentCoverageRatioThresholdPercentage

glpi:PennNationalGamingInc.MeadowsLease

Period End	2021-03-31
Value	5.0
Percentage of OperatingLeasesAnnualRentEscalatorOveraPeriodofTimeContingentUpontheAchievementofCertainRentCoverageRatioThresholdPercentage	100.0

glpi:OperatingLeasesIncomeStatementLeaseRevenuePriortoTaxesPaidbyTenant us-gaap:LeaseArrangementType

glpi:OperatingLeasesIncomeStatementLeaseRevenuePriortoTaxesPaidbyTenant

glpi:MorgantownLease

Period End	2020-10-01
Value	3.0
Percentage of OperatingLeasesIncomeStatementLeaseRevenuePriortoTaxesPaidbyTenant	100.0

glpi:OperatingLeasesPercentagetoWhichRentEscalationWillbeReducedUponAchievementofCertainThreshold us-gaap:LeaseArrangementType

glpi:OperatingLeasesPercentagetoWhichRentEscalationWillbeReducedUponAchievementofCertainThreshold

glpi:PennNationalGamingInc.MeadowsLease

Period End	2021-03-31
Value	2.0
Percentage of OperatingLeasesPercentagetoWhichRentEscalationWillbeReducedUponAchievementofCertainThreshold	100.0

glpi:Operatingleasesannualrentalescalationpercentage us-gaap:LeaseArrangementType

glpi:Operatingleasesannualrentalescalationpercentage

glpi:AmendedPinnacleEntertainmentInc.MasterLease

Period End	2021-03-31
Value	2.0
Percentage of Operatingleasesannualrentalescalationpercentage	100.0

glpi:BelterraParkLease

Period End	2021-03-31
Value	2.0
Percentage of Operatingleasesannualrentalescalationpercentage	100.0

glpi:BoydGamingCorporationMasterLease

Period End	2021-03-31
Value	2.0
Percentage of Operatingleasesannualrentalescalationpercentage	100.0

glpi:PennNationalGamingInc.MeadowsLease

Period End	2021-03-31
Value	5.0
Percentage of Operatingleasesannualrentalescalationpercentage	250.0

glpi:Operatingleasespercentoftheaveragenetrevenuesofpropertysusedtocalculaterentincrease us-gaap:LeaseArrangementType

glpi:Operatingleasespercentoftheaveragenetrevenuesofpropertysusedtocalculaterentincrease

glpi:AmendedPinnacleEntertainmentInc.MasterLease

Period End	2021-03-31
Value	4.0
Percentage of Operatingleasespercentoftheaveragenetrevenuesofpropertysusedtocalculaterentincrease	100.0

glpi:BelterraParkLease

Period End	2021-03-31
Value	4.0
Percentage of Operatingleasespercentoftheaveragenetrevenuesofpropertysusedtocalculaterentincrease	100.0

glpi:BoydGamingCorporationMasterLease

Period End	2021-03-31
Value	4.0
Percentage of Operatingleasespercentoftheaveragenetrevenuesofpropertysusedtocalculaterentincrease	100.0

glpi:CasinoQueenLease

Period End	2021-03-31
Value	4.0
Percentage of Operatingleasespercentoftheaveragenetrevenuesofpropertysusedtocalculaterentincrease	100.0

glpi:PennNationalGamingInc.MasterLease

Period End	2021-03-31
Value	4.0
Percentage of Operatingleasespercentoftheaveragenetrevenuesofpropertysusedtocalculaterentincrease	100.0

glpi:PennNationalGamingInc.MeadowsLease

Period End	2021-03-31
Value	4.0
Percentage of Operatingleasespercentoftheaveragenetrevenuesofpropertysusedtocalculaterentincrease	100.0

glpi:PaymentsofPremiumandRelatedCostsonTenderofSeniorUnsecuredNotes

Period End	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2017-12-31	2017-09-30
Value	0.0	0.0	0.005	15	0.0	18	0.0	0.0	0.0	0.0	0.0	0.0
Percentage of PaymentsofPremiumandRelatedCostsonTenderofSeniorUnsecuredNotes	0.0	0.0	100.0	100.0	0.0	100.0	0.0	0.0	0.0	0.0	0.0	0.0

glpi:PaymentstoAcquireRealEstateExcludingTransactionCosts us-gaap:BusinessAcquisition

glpi:PaymentstoAcquireRealEstateExcludingTransactionCosts

glpi:BallysTropicanaEvansville

Period End	2021-06-03
Value	340
Percentage of PaymentstoAcquireRealEstateExcludingTransactionCosts	100.0

glpi:DoverDownsHotelCasino

Period End	2021-06-03
Value	144
Percentage of PaymentstoAcquireRealEstateExcludingTransactionCosts	42.4

glpi:Morgantown

Period End	2020-10-01
Value	30
Percentage of PaymentstoAcquireRealEstateExcludingTransactionCosts	0.0

glpi:TwinRiverWorldwideHoldingsInc

Period End	2021-04-13	2020-10-27
Value	150	144
Percentage of PaymentstoAcquireRealEstateExcludingTransactionCosts	0.0	0.0

glpi:PaymentstoAcquireRealEstateExcludingTransactionCosts us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

glpi:Morgantown, us-gaap:SubsequentEvent

Period End	2020-10-01
Value	30
Percentage of PaymentstoAcquireRealEstateExcludingTransactionCosts	0.0

glpi:TwinRiverWorldwideHoldingsInc, us-gaap:SubsequentEvent

Period End	2021-04-13	2020-10-27
Value	150	144
Percentage of PaymentstoAcquireRealEstateExcludingTransactionCosts	0.0	0.0

glpi:PercentageoftheChangeinNetRevenuesfromthePrecedingMonthUsedToComputeMonthlyRentPaymentsUnderPennMasterLease us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty, us-gaap:LeaseArrangementType

glpi:PercentageoftheChangeinNetRevenuesfromthePrecedingMonthUsedToComputeMonthlyRentPaymentsUnderPennMasterLease

glpi:HollywoodCasinoColumbusAndHollywoodCasinoToledo, glpi:PennNationalGamingInc.MasterLease

Period End	2021-03-31
Value	20.0
Percentage of PercentageoftheChangeinNetRevenuesfromthePrecedingMonthUsedToComputeMonthlyRentPaymentsUnderPennMasterLease	100.0

glpi:ProceedsRepaymentsRelatedtoTaxWithholdingOnRestrictedStockAwardVestingsNetofProceedsfromExerciseofOptions

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31
Value	0.0	-9.756	-0.002	-2.706	-0.002	-12.583	-0.001	0.0	-0.001	-9.056	3.839	6.603	4.126	-7.031	2.36	7.732	3.609	4.456
Percentage of ProceedsRepaymentsRelatedtoTaxWithholdingOnRestrictedStockAwardVestingsNetofProceedsfromExerciseofOptions	0.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

glpi:StockIssuedDuringPeriodPricePerShare

Period End	2020-12-31
Value	36.25
Percentage of StockIssuedDuringPeriodPricePerShare	100.0

us-gaap:AmortizationOfFinancingCostsAndDiscounts

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31
Value	2.47	2.47	2.471	2.669	2.593	2.77	2.858	2.807	2.899	2.891	2.889	2.982	3.039	3.257	3.256
Percentage of AmortizationOfFinancingCostsAndDiscounts	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferred1

glpi:TwinRiverWorldwideHoldingsInc

Period End	2021-04-13	2020-10-27
Value	150	340
Percentage of BusinessCombinationConsiderationTransferred1	100.0	100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

glpi:TwinRiverWorldwideHoldingsInc, us-gaap:SubsequentEvent

Period End	2021-04-13	2020-10-27
Value	150	340
Percentage of BusinessCombinationConsiderationTransferred1	100.0	100.0

us-gaap:DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed us-gaap:DebtInstrument, us-gaap:DebtInstrumentRedemptionPeriod

us-gaap:DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed

glpi:SeniorUnsecuredNotes4.875PercentDue2020, us-gaap:DebtInstrumentRedemptionPeriodOne

Period End	2020-12-31
Value	78.0
Percentage of DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed	100.0

us-gaap:DeferredRevenueRevenueRecognized1

Period End	2020-12-31	2020-09-30
Value	64	141
Percentage of DeferredRevenueRevenueRecognized1	100.0	100.0

us-gaap:DeferredRevenueRevenueRecognized1 us-gaap:BusinessAcquisition

glpi:TropicanaLasVegas

Period End	2020-09-30
Value	141
Percentage of DeferredRevenueRevenueRecognized1	100.0

us-gaap:Depreciation

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	58	58	58	58	57	56	56	57	67	58	54	27	27	27	28	28	28	28	28	27	27	27	27	27	27	27	27	26	26	26	18	3.611	3.627	3.588
Percentage of Depreciation	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:Depreciation us-gaap:BusinessAcquisition

glpi:TropicanaLasVegas

Period End	2020-09-30
Value	0.9
Percentage of Depreciation	1.5

us-gaap:Depreciation us-gaap:StatementBusinessSegments

glpi:GLPCapitalLP

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	57	56	56	55	55	54	54	55	66	56	51	24	25	25	25	25	25	25	25	24	24	24	24	24	24	24	24	23	23	23	14	0.0
Percentage of Depreciation	98.5	96.9	96.1	95.7	95.9	96.8	96.9	96.9	97.4	95.9	95.6	91.4	91.5	91.6	91.5	90.2	90.2	90.0	89.9	89.6	89.6	89.4	89.3	88.3	88.3	89.0	88.8	88.5	88.4	88.4	82.3	0.0

glpi:TRSProperties

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	0.899	1.84	2.319	2.485	2.341	1.787	1.768	1.758	1.798	2.403	2.368	2.339	2.351	2.339	2.386	2.812	2.797	2.833	2.853	2.837	2.822	2.871	2.897	3.22	3.224	3.018	3.069	3.054	3.057	3.081	3.201	3.611
Percentage of Depreciation	1.5	3.1	3.9	4.3	4.1	3.2	3.1	3.1	2.6	4.1	4.4	8.6	8.5	8.4	8.5	9.8	9.8	10.0	10.1	10.4	10.4	10.6	10.7	11.7	11.7	11.0	11.2	11.5	11.6	11.6	17.7	100.0

us-gaap:DividendsShareBasedCompensation

Period End	2021-06-30	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-27	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-28	2014-03-31
Value	200000.0	200000.0	200000.0	200000.0	200000.0	300000.0	200000.0	200000.0	200000.0	200000.0	200000.0	200000.0	200000.0	200000.0	200000.0	200000.0	300000.0	300000.0	200000.0	300000.0	300000.0	400000.0	500000.0	500000.0	600000.0	600000.0	1000000.0	1000000.0	1000000.0	1000000.0	1000000.0
Percentage of DividendsShareBasedCompensation	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:GainLossOnDispositionOfAssets1

Period End	2021-06-30	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	-93000.0	-41396000.0	-4000.0	8000.0	-1000.0	-42000.0	-37000.0	-6000.0	-7000.0	45000.0	-129000.0	-225000.0	0	-15000.0	-421000.0	11000.0	-105000.0	-5000.0	445000.0	0	15000.0	-96000.0	-22000.0	-66000.0	-1000.0	3000.0	146000.0	-1000.0	-158000.0	8000.0	1000.0	2000.0	28000.0
Percentage of GainLossOnDispositionOfAssets1	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable

Period End	2021-06-30	2021-03-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	-1.918	1.88	-0.24	0.266	0.0	0.0	0.0	-0.648	0.648	0.0	0.0	-0.199	0.199	0.0	0.0	-2.938	2.938	0.0	0.0	0.0	0.0	0.0	-0.229	-1.343	1.572	2.059	-2.337	-7.109	-11.367	10	3.253	2.709	-10.541
Percentage of IncreaseDecreaseInAccruedIncomeTaxesPayable	100.0	100.0	100.0	100.0	0.0	0.0	0.0	100.0	100.0	0.0	0.0	100.0	100.0	0.0	0.0	100.0	100.0	0.0	0.0	0.0	0.0	0.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	3414000.0	-4780000.0	3496000.0	924000.0	339000.0	-10667000.0	3606000.0	2095000.0	1272000.0	-10162000.0	2175000.0	-2581000.0	14287000.0	-7680000.0	3925000.0	2059000.0	1440000.0	-7234000.0	2398000.0	-4519000.0	7644000.0	-8623000.0	2040000.0	2539000.0	2753000.0	-6194000.0	1920000.0	220000.0	2306000.0	-2202000.0	2710000.0	407000.0	-476000.0	-510000.0
Percentage of IncreaseDecreaseInEmployeeRelatedLiabilities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:IncreaseDecreaseInInterestPayableNet

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31
Value	-10.96	9.273	-10.88	25	-19.414	16	-23.761	31	-44.883	52	-46.832	56	-39.871	42	-42.64	42	-42.499	41	-39.624	43	-12.873	25	-24.91	25	-24.917	24	-24.887	24	-25.379	24	17
Percentage of IncreaseDecreaseInInterestPayableNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:IncreaseDecreaseInLeasingReceivables us-gaap:SubsequentEventType, us-gaap:TransactionType

us-gaap:IncreaseDecreaseInLeasingReceivables

us-gaap:SubsequentEvent, glpi:ExchangeAgreement

Period End	2020-10-27
Value	520000.0
Percentage of IncreaseDecreaseInLeasingReceivables	100.0

us-gaap:IncreaseDecreaseInOtherAccruedLiabilities

Period End	2021-03-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	735000.0	-187000.0	-1285000.0	1556000.0	-1050000.0	-525000.0	784000.0	521000.0	-610000.0	327000.0	-46000.0	203000.0	374000.0	-800000.0	619000.0	218000.0	-549000.0	-485000.0	-2651000.0	-987000.0	607000.0	-133000.0	3352000.0	415000.0	-860000.0	-1224000.0	428000.0	-6788000.0	8401000.0	-675000.0	81000.0	189000.0
Percentage of IncreaseDecreaseInOtherAccruedLiabilities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

Period End	2021-06-30	2021-03-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	1638000.0	-1893000.0	2702000.0	4723000.0	-4133000.0	1932000.0	-563000.0	187000.0	-964000.0	-1320000.0	310000.0	50000.0	522000.0	2670000.0	1695000.0	2112000.0	-630000.0	782000.0	390000.0	0	703000.0	2213000.0	-976000.0	213000.0	449000.0	519000.0	-72000.0	756000.0	1674000.0	398000.0	-176000.0	298000.0	63000.0
Percentage of IncreaseDecreaseInOtherOperatingLiabilities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	-0.396	-2.907	7.991	0.571	4.533	-6.467	3.947	-0.189	-1.034	3.346	-0.101	-0.349	0.122	1.001	3.828	0.841	-0.407	1.07	3.028	-14.798	8.054	-3.849	8.682	4.416	-2.552	-0.838	2.926	-9.621	12	5.201	-0.27	0.908	-0.133	0.38
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:IncreaseDecreaseInPropertyAndOtherTaxesPayable

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-03-31
Value	-216000.0	868000.0	6990000.0	-863000.0	822000.0	-134000.0	-167000.0	145000.0	-374000.0	276000.0	-407000.0	377000.0	-141000.0	22000.0	-286000.0	342000.0	-1386000.0	813000.0	73000.0	284000.0	757000.0	-201000.0	-269000.0	302000.0	-583000.0	-406000.0	-75000.0	-7368000.0	2995000.0	4975000.0	-536000.0	337000.0
Percentage of IncreaseDecreaseInPropertyAndOtherTaxesPayable	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements us-gaap:AwardType

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:PerformanceShares

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	656000.0	574000.0	164000.0	695000.0	640000.0	309000.0	538000.0	515000.0	838000.0	608000.0	-28000.0	764000.0	658000.0	947000.0	39000.0	1304000.0	1218000.0	802000.0	-295000.0	572000.0	425000.0	203000.0	-338000.0	377000.0	518000.0	382000.0	-6000.0	9000.0	74000.0	0	0	0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0	0.0

us-gaap:RestrictedStock

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	144000.0	116000.0	20000.0	110000.0	25000.0	50000.0	21000.0	127000.0	103000.0	54000.0	14000.0	96000.0	62000.0	42000.0	9000.0	154000.0	123000.0	149000.0	13000.0	185000.0	138000.0	122000.0	-8000.0	150000.0	163000.0	219000.0	-16000.0	150000.0	157000.0	370000.0	6000.0	318000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	22.0	20.2	12.2	15.8	3.9	16.2	3.9	24.7	12.3	8.9	-50.0	12.6	9.4	4.4	23.1	11.8	10.1	18.6	-4.4	32.3	32.5	60.1	2.4	39.8	31.5	57.3	266.7	1666.7	212.2	0.0	0.0	0.0

us-gaap:InterestAndFeeIncomeLoansCommercialRealEstate

Period End	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31
Value	-0.03	5.574	6.24	7.316	7.316	7.206	7.201	7.193	6.943	0.0	0.0	0.0
Percentage of InterestAndFeeIncomeLoansCommercialRealEstate	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0	0.0

us-gaap:LeaseCost

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	8.664	7.108	7.346	8.333	5.835	8.404	9.3	9.502	15	9.657
Percentage of LeaseCost	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:OperatingLeaseCost

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	3.228	2.928	3.282	3.458	3.472	3.695	3.76	3.909	3.92	3.893
Percentage of OperatingLeaseCost	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:OperatingLeaseLeaseIncome

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	274	263	268	267	245	249	251	248	248	247
Percentage of OperatingLeaseLeaseIncome	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:OperatingLeasePayments

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30
Value	403000.0	404000.0	227000.0	436000.0	449000.0	488000.0	529000.0	586000.0	555000.0
Percentage of OperatingLeasePayments	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:OtherNonoperatingIncome

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	54000.0	124000.0	78000.0	22000.0	273000.0	196000.0	184000.0	235000.0	248000.0	89000.0	-963000.0	1418000.0	891000.0	481000.0	492000.0	492000.0	487000.0	464000.0	471000.0	481000.0	654000.0	517000.0	571000.0	581000.0	585000.0	595000.0	607000.0	623000.0	668000.0	546000.0	0	0
Percentage of OtherNonoperatingIncome	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	85000.0	157000.0	177000.0	152000.0	161000.0	144000.0	156000.0	138000.0	146000.0	158000.0	64000.0	147000.0	129000.0	162000.0	152000.0	157000.0	159000.0	175000.0	179000.0	184000.0	170000.0	135000.0	118000.0	135000.0	188000.0	215000.0	181000.0	208000.0	194000.0	175000.0	35000.0	10000.0
Percentage of ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:PaymentsForCapitalImprovements

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31
Value	914000.0	438000.0	1501000.0	488000.0	495000.0	646000.0	761000.0	709000.0	1017000.0	530000.0	1330000.0	970000.0	1162000.0	822000.0	991000.0	460000.0	1245000.0	482000.0	1418000.0	496000.0	835000.0	362000.0	845000.0	382000.0	775000.0	951000.0	1429000.0	641000.0	597000.0	871000.0	1720000.0	766000.0	848000.0	896000.0
Percentage of PaymentsForCapitalImprovements	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:PaymentsForCapitalImprovements us-gaap:StatementBusinessSegments

glpi:GLPCapitalLP

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	44000.0	21000.0	31000.0	11000.0	56000.0	88000.0	18000.0	0	2000.0	2000.0	4000.0	0	3000.0	48000.0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Percentage of PaymentsForCapitalImprovements	4.8	4.8	2.1	2.3	11.3	13.6	2.4	0.0	0.2	0.4	0.3	0.0	0.3	5.8	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

glpi:TRSProperties

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	870000.0	417000.0	1470000.0	477000.0	439000.0	558000.0	743000.0	709000.0	1015000.0	528000.0	1326000.0	970000.0	1159000.0	774000.0	991000.0	460000.0	1245000.0	482000.0	1418000.0	496000.0	835000.0	362000.0	845000.0	382000.0	775000.0	951000.0	1429000.0	641000.0	597000.0	871000.0	1720000.0	766000.0
Percentage of PaymentsForCapitalImprovements	95.2	95.2	97.9	97.7	88.7	86.4	97.6	100.0	99.8	99.6	99.7	100.0	99.7	94.2	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:PaymentsOfFinancingCosts

Period End	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31
Value	0.0	2.162	9.479	0.0	0.024	9.769	0.0	0.236	1.537	11	19	0.0	0.0	0.0	0.0	0.0	0.003	0.0	31	0.709	2.812	6.688	0.0	0.0	0.0	0.0	0.306	0.0	48
Percentage of PaymentsOfFinancingCosts	0.0	100.0	100.0	0.0	100.0	100.0	0.0	100.0	100.0	100.0	100.0	0.0	0.0	0.0	0.0	0.0	100.0	0.0	100.0	100.0	100.0	100.0	0.0	0.0	0.0	0.0	100.0	0.0	100.0

us-gaap:PaymentsToEmployees us-gaap:StatementScenario, us-gaap:TitleOfIndividual

us-gaap:PaymentsToEmployees

us-gaap:ScenarioForecast, us-gaap:ChiefFinancialOfficer

Period End	2021-01-04	2020-01-02	2019-01-02	2018-09-01
Value	1265000.0	2530000.0	4743800.0	4210400.0
Percentage of PaymentsToEmployees	100.0	100.0	100.0	100.0

us-gaap:ProceedsFromLeasePayments us-gaap:LeaseArrangementType, us-gaap:SubsequentEventType, us-gaap:TransactionType

us-gaap:ProceedsFromLeasePayments

glpi:CaesarsAmendedAndRestatedMasterLease, us-gaap:SubsequentEvent, glpi:ExchangeAgreement

Period End	2020-10-27
Value	5720000.0
Percentage of ProceedsFromLeasePayments	100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

Period End	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30
Value	0	8000.0	7000.0	0	-10000.0	20000.0	8000.0	182000.0	65000.0	2919000.0	227000.0	0	20000.0	903000.0	11000.0	0	3000.0	897000.0	1000.0	233000.0	193000.0	20000.0	92000.0	5000.0	21000.0	153000.0	6000.0	0	12000.0	60000.0
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment	0.0	100.0	100.0	0.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	100.0	100.0	0.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

Period End	2021-06-30	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30
Value	35	-0.102	0.012	0.0	0.185	0.0	0.006	0.287
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	100.0	100.0	100.0	0.0	100.0	0.0	100.0	100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

us-gaap:PerformanceShares

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	0	366890.0	0	115000.0	0	446670.0	0	0	0	447330.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	0.0	100.0	0.0	100.0	0.0	100.0	0.0	0.0	0.0	100.0

us-gaap:RestrictedStock

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	8736.0	200540.0	8740.0	59635.0	12103.0	251390.0	9854.0	9721.0	27682.0	252700.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	0.0	54.7	0.0	51.9	0.0	56.3	0.0	0.0	0.0	56.5

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures

us-gaap:PerformanceShares

Period End	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31
Value	0	115000.0	0	16673.0	0	0	0	23332.0	0	0	330000.0	0	0	0	0	0	543560.0	0	0	0	0	0	0	0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures	0.0	100.0	0.0	100.0	0.0	0.0	0.0	100.0	0.0	0.0	100.0	0.0	0.0	0.0	0.0	0.0	100.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted

us-gaap:PerformanceShares

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31
Value	0	478000.0	0	0	0	504000.0	0	0	0	512000.0	0	0	0	556000.0	0	0	0	558000.0	0	0	0	558000.0	0	0	0	548000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted	0.0	100.0	0.0	0.0	0.0	100.0	0.0	0.0	0.0	100.0	0.0	0.0	0.0	100.0	0.0	0.0	0.0	100.0	0.0	0.0	0.0	100.0	0.0	0.0	0.0	100.0

us-gaap:ShortTermLeaseCost

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	301000.0	327000.0	200000.0	203000.0	5000.0	227000.0	295000.0	254000.0	273000.0	238000.0
Percentage of ShortTermLeaseCost	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:StockIssuedDuringPeriodSharesNewIssues

Period End	2020-12-31
Value	9.2
Percentage of StockIssuedDuringPeriodSharesNewIssues	100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures

Period End	2021-06-30	2021-03-31	2020-09-30	2020-06-30	2020-03-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31
Value	3.612	-3.968	5.647	4.062	-8.348	3.845	4.182	-5.323	3.272	3.275	0.615	-8.288	3.682	3.659	3.213	2.179	4.464	4.576	4.027	3.088	3.41	3.392	2.786	2.152	2.166	2.062	-0.124	-0.583
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

Period End	2021-06-30	2021-03-31	2020-09-30	2020-06-30	2020-03-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31
Value	3.612	-3.971	5.646	4.062	-8.352	3.845	4.181	-5.327	3.272	3.275	0.615	-8.293	3.682	3.659	3.212	2.178	4.464	4.576	4.027	3.087	3.41	3.392	2.786	2.151	2.166	2.062	-0.125	-0.584
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	100.0	100.1	100.0	100.0	100.0	100.0	100.0	100.1	100.0	100.0	100.0	100.1	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.8	100.2

us-gaap:CommonStock

Period End	2021-03-31	2020-09-30	2020-06-30	2020-03-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31
Value	0.003	0.001	0.0	0.004	0.0	0.001	0.004	0.0	0.0	0.0	0.005	0.0	0.0	0.001	0.001	0.0	0.0	0.0	0.001	0.0	0.0	0.0	0.001	0.0	0.0	0.001	0.001
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-0.1	0.0	0.0	-0.0	0.0	0.0	-0.1	0.0	0.0	0.0	-0.1	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	-0.8	-0.2

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

Period End	2021-06-30	2021-03-31	2020-09-30	2020-06-30	2020-03-31	2019-09-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31
Value	70	-0.095	-0.095	-0.083	0.31	0.31	0.592	3.841	6.603	4.127	5.244	2.362	7.768	4.17	6.703	10	48	31	24	13	5.054	3.833	12	11	4.308	7.402	15
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

Period End	2021-06-30	2021-03-31	2020-09-30	2020-06-30	2020-03-31	2019-09-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31
Value	70	-0.095	-0.095	-0.083	0.31	0.31	0.592	3.839	6.6	4.125	5.241	2.361	7.764	4.168	6.7	10	48	31	24	13	5.051	3.831	12	11	4.307	7.398	15
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised	100.0	100.0	100.0	100.0	100.0	100.0	100.0	99.9	100.0	100.0	99.9	100.0	99.9	100.0	100.0	99.9	100.0	99.9	99.9	99.9	99.9	99.9	99.9	99.9	100.0	99.9	99.9

us-gaap:CommonStock

Period End	2021-06-30	2020-03-31	2019-09-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31
Value	0.015	0.0	0.0	0.0	0.002	0.003	0.002	0.003	0.001	0.004	0.002	0.003	0.006	0.024	0.016	0.013	0.009	0.003	0.002	0.011	0.006	0.001	0.004	0.01
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised	0.0	0.0	0.0	0.0	0.1	0.0	0.0	0.1	0.0	0.1	0.0	0.0	0.1	0.0	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.0	0.1	0.1

us-gaap:StraightLineRentAdjustments

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31
Value	-0.828	-0.828	-0.818	-4.928	1.678	8.644	8.644	8.643	8.643	8.644	12	15	16	16	16	16	16	16	16	14	13	13	13	13	13	13	13	10	10	10
Percentage of StraightLineRentAdjustments	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:VariableLeaseCost

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	2129000.0	1010000.0	903000.0	1651000.0	652000.0	1462000.0	2225000.0	2319000.0	2068000.0	2436000.0
Percentage of VariableLeaseCost	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

dei:EntityCommonStockSharesOutstanding

Period End	2021-04-28	2021-02-18
Value	232	232
Percentage of EntityCommonStockSharesOutstanding	100.0	100.0

glpi:AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRealEstateInvestments us-gaap:BusinessAcquisition

glpi:AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRealEstateInvestments

glpi:BallysTropicanaEvansvilleDoverDowns

Period End	2021-06-03
Value	419
Percentage of AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRealEstateInvestments	100.0

glpi:AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAssetsAndLandRights us-gaap:BusinessAcquisition

glpi:AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAssetsAndLandRights

glpi:BallysTropicanaEvansvilleDoverDowns

Period End	2021-06-03
Value	67
Percentage of AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAssetsAndLandRights	100.0

glpi:DebtInstrumentDiscountRateAtIssuanceOfFaceValue us-gaap:DebtInstrument

glpi:DebtInstrumentDiscountRateAtIssuanceOfFaceValue

glpi:SeniorUnsecuredNotes400PercentDue2031

Period End	2020-08-18	2020-06-25
Value	103.82	98.827
Percentage of DebtInstrumentDiscountRateAtIssuanceOfFaceValue	100.0	100.0

glpi:Deferredcompensationplanassetsfairvaluedisclosure us-gaap:FairValueByMeasurementBasis

glpi:Deferredcompensationplanassetsfairvaluedisclosure

us-gaap:CarryingReportedAmountFairValueDisclosure

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2013-12-31
Value	33	31	35	31	28	23	28	26	26	26	22	25	24	23	22	21	20	19	17	17	16	14	14	14	15	14	14	12
Percentage of Deferredcompensationplanassetsfairvaluedisclosure	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:EstimateOfFairValueFairValueDisclosure

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2013-12-31
Value	33	31	35	31	28	23	28	26	26	26	22	25	24	23	22	21	20	19	17	17	16	14	14	14	15	14	14	12
Percentage of Deferredcompensationplanassetsfairvaluedisclosure	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

glpi:DisposalGroupIncludingDiscontinuedOperationGamingPropertyAndOtherTaxes us-gaap:BalanceSheetLocation, us-gaap:DisposalGroupClassification

glpi:DisposalGroupIncludingDiscontinuedOperationGamingPropertyAndOtherTaxes

us-gaap:OtherLiabilities, us-gaap:DiscontinuedOperationsHeldforsale

Period End	2021-06-30	2021-03-31	2020-12-31
Value	901000.0	582000.0	398000.0
Percentage of DisposalGroupIncludingDiscontinuedOperationGamingPropertyAndOtherTaxes	100.0	100.0	100.0

glpi:DisposalGroupIncludingDiscontinuedOperationLeaseLiabilities us-gaap:BalanceSheetLocation, us-gaap:DisposalGroupClassification

glpi:DisposalGroupIncludingDiscontinuedOperationLeaseLiabilities

us-gaap:OtherLiabilities, us-gaap:DiscontinuedOperationsHeldforsale

Period End	2021-06-30	2021-03-31	2020-12-31
Value	867000.0	125000.0	262000.0
Percentage of DisposalGroupIncludingDiscontinuedOperationLeaseLiabilities	100.0	100.0	100.0

glpi:DisposalGroupIncludingDiscontinuedOperationPrepaidExpenses us-gaap:DisposalGroupClassification

glpi:DisposalGroupIncludingDiscontinuedOperationPrepaidExpenses

us-gaap:DiscontinuedOperationsHeldforsale

Period End	2021-06-30	2021-03-31	2020-12-31
Value	2080000.0	2797000.0	2473000.0
Percentage of DisposalGroupIncludingDiscontinuedOperationPrepaidExpenses	100.0	100.0	100.0

glpi:DisposalGroupIncludingDiscontinuedOperationRightOfUseAsset us-gaap:DisposalGroupClassification

glpi:DisposalGroupIncludingDiscontinuedOperationRightOfUseAsset

us-gaap:DiscontinuedOperationsHeldforsale

Period End	2021-06-30	2021-03-31	2020-12-31
Value	867000.0	126000.0	263000.0
Percentage of DisposalGroupIncludingDiscontinuedOperationRightOfUseAsset	100.0	100.0	100.0

glpi:DisposalGroupIncludingDiscontinuedOperationSalariesAndWages us-gaap:BalanceSheetLocation, us-gaap:DisposalGroupClassification

glpi:DisposalGroupIncludingDiscontinuedOperationSalariesAndWages

us-gaap:OtherLiabilities, us-gaap:DiscontinuedOperationsHeldforsale

Period End	2021-06-30	2021-03-31	2020-12-31
Value	3143000.0	1931000.0	2064000.0
Percentage of DisposalGroupIncludingDiscontinuedOperationSalariesAndWages	100.0	100.0	100.0

glpi:FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour us-gaap:FairValueByAssetClass

glpi:FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour

glpi:LandRights

Period End	2021-06-30
Value	619
Percentage of FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour	100.0

glpi:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour

Period End	2021-06-30
Value	630
Percentage of LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	100.0

glpi:LessorOperatingLeaseAnnualRentIncrease us-gaap:LeaseArrangementType

glpi:LessorOperatingLeaseAnnualRentIncrease

glpi:TwinRiverMasterLease

Period End	2020-10-27
Value	2.0
Percentage of LessorOperatingLeaseAnnualRentIncrease	100.0

glpi:LessorOperatingLeaseAnnualRentIncrease us-gaap:LeaseArrangementType, us-gaap:SubsequentEventType

glpi:TwinRiverMasterLease, us-gaap:SubsequentEvent

Period End	2020-10-27
Value	2.0
Percentage of LessorOperatingLeaseAnnualRentIncrease	100.0

glpi:LongTermDebtGrossandLeaseObligations

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31
Value	5799	5799	5799	5799	5824	6299	5786	5800	5841	5842	5903
Percentage of LongTermDebtGrossandLeaseObligations	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

glpi:NumberOfFacilitiesWhoseRealEstatePropertyIsIncludedInEntityPortfolio us-gaap:MajorCustomers

glpi:NumberOfFacilitiesWhoseRealEstatePropertyIsIncludedInEntityPortfolio

glpi:EldoradoResortsInc.

Period End	2021-06-30	2021-03-31	2020-12-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	7.0	7.0	7.0	5.0	6.0	6.0	6.0
Percentage of NumberOfFacilitiesWhoseRealEstatePropertyIsIncludedInEntityPortfolio	100.0	100.0	100.0	100.0	100.0	100.0	100.0

glpi:OperatingLeasesFutureIncometoBeRecognized

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	17942	17517	17774	18067
Percentage of OperatingLeasesFutureIncometoBeRecognized	100.0	100.0	100.0	100.0

glpi:OperatingLeasesFutureIncometoBeRecognizedCurrent

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	538	771	1028	257
Percentage of OperatingLeasesFutureIncometoBeRecognizedCurrent	100.0	100.0	100.0	100.0

glpi:OperatingLeasesFutureIncometoBeRecognizedThereafter

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	13248	12784	12784	13781
Percentage of OperatingLeasesFutureIncometoBeRecognizedThereafter	100.0	100.0	100.0	100.0

glpi:OperatingLeasesFutureIncometoBeRecognizedinFiveYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	1018	969	969	971
Percentage of OperatingLeasesFutureIncometoBeRecognizedinFiveYears	100.0	100.0	100.0	100.0

glpi:OperatingLeasesFutureIncometoBeRecognizedinFourYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	1018	969	969	1004
Percentage of OperatingLeasesFutureIncometoBeRecognizedinFourYears	100.0	100.0	100.0	100.0

glpi:OperatingLeasesFutureIncometoBeRecognizedinThreeYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	1051	1002	1002	1021
Percentage of OperatingLeasesFutureIncometoBeRecognizedinThreeYears	100.0	100.0	100.0	100.0

glpi:OperatingLeasesFutureIncometoBeRecognizedinTwoYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	1068	1019	1019	1030
Percentage of OperatingLeasesFutureIncometoBeRecognizedinTwoYears	100.0	100.0	100.0	100.0

glpi:OperatingLeasesFutureMinimumBaseGroundPaymentsReceivable

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	154	123	125	174
Percentage of OperatingLeasesFutureMinimumBaseGroundPaymentsReceivable	100.0	100.0	100.0	100.0

glpi:OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableCurrent

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	6024000.0	7097000.0	9462000.0	3010000.0
Percentage of OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableCurrent	100.0	100.0	100.0	100.0

glpi:OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInFiveYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	12	9.486	9.486	12
Percentage of OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInFiveYears	100.0	100.0	100.0	100.0

glpi:OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInFourYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	12	9.48	9.48	12
Percentage of OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInFourYears	100.0	100.0	100.0	100.0

glpi:OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInThreeYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	12	9.473	9.473	12
Percentage of OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInThreeYears	100.0	100.0	100.0	100.0

glpi:OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInTwoYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	12	9.468	9.468	12
Percentage of OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInTwoYears	100.0	100.0	100.0	100.0

glpi:OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableThereafter

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	100	78	78	123
Percentage of OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableThereafter	100.0	100.0	100.0	100.0

glpi:SalesLeasebackTransactionAnnualRentRetained us-gaap:LeaseArrangementType

glpi:SalesLeasebackTransactionAnnualRentRetained

glpi:CasinoQueenLease

Period End	2020-11-25
Value	21
Percentage of SalesLeasebackTransactionAnnualRentRetained	100.0

glpi:HollywoodCasinoPerryvilleMD

Period End	2020-12-11
Value	7.77
Percentage of SalesLeasebackTransactionAnnualRentRetained	0.0

glpi:SalesLeasebackTransactionAnnualRentRetained us-gaap:LeaseContractualTerm

glpi:CasinoQueenLease

Period End	2020-11-25
Value	21
Percentage of SalesLeasebackTransactionAnnualRentRetained	100.0

glpi:HollywoodCasinoPerryvilleMD

Period End	2020-12-11
Value	7.77
Percentage of SalesLeasebackTransactionAnnualRentRetained	0.0

glpi:SalesLeasebackTransactionConsiderationAmount us-gaap:LeaseArrangementType

glpi:SalesLeasebackTransactionConsiderationAmount

glpi:CasinoQueenLease

Period End	2020-11-25
Value	28
Percentage of SalesLeasebackTransactionConsiderationAmount	100.0

glpi:HollywoodCasinoPerryvilleMD

Period End	2020-12-11
Value	31
Percentage of SalesLeasebackTransactionConsiderationAmount	0.0

glpi:SalesLeasebackTransactionConsiderationAmount us-gaap:LeaseContractualTerm

glpi:CasinoQueenLease

Period End	2020-11-25
Value	28
Percentage of SalesLeasebackTransactionConsiderationAmount	100.0

glpi:HollywoodCasinoPerryvilleMD

Period End	2020-12-11
Value	31
Percentage of SalesLeasebackTransactionConsiderationAmount	0.0

glpi:StraightLineRentAdjustmentsCurrent

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	1656000.0	2484000.0	3312000.0	814000.0
Percentage of StraightLineRentAdjustmentsCurrent	100.0	100.0	100.0	100.0

glpi:StraightLineRentAdjustmentsNet

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	331	332	333	333
Percentage of StraightLineRentAdjustmentsNet	100.0	100.0	100.0	100.0

glpi:StraightLineRentAdjustmentsThereafter

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	217	217	217	246
Percentage of StraightLineRentAdjustmentsThereafter	100.0	100.0	100.0	100.0

glpi:StraightLineRentAdjustmentsinFiveYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	28	28	28	30
Percentage of StraightLineRentAdjustmentsinFiveYears	100.0	100.0	100.0	100.0

glpi:StraightLineRentAdjustmentsinFourYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	30	30	30	30
Percentage of StraightLineRentAdjustmentsinFourYears	100.0	100.0	100.0	100.0

glpi:StraightLineRentAdjustmentsinThreeYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	30	30	30	22
Percentage of StraightLineRentAdjustmentsinThreeYears	100.0	100.0	100.0	100.0

glpi:StraightLineRentAdjustmentsinTwoYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	22	22	22	3.255
Percentage of StraightLineRentAdjustmentsinTwoYears	100.0	100.0	100.0	100.0

us-gaap:AccountsPayableCurrentAndNoncurrent

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	0.585	0.168	0.375	0.842	1.124	0.339	1.006	0.166	0.171	0.702	2.511	1.851	0.461	0.492	0.715	0.435	0.432	0.955	1.079	0.588	0.244	0.49	0.406	2.637	2.441	3.301	4.409	18	49	24	21	0.251
Percentage of AccountsPayableCurrentAndNoncurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrentAndNoncurrent

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2015-12-31
Value	0.295	0.83	0.146	0.769	1.632	0.81	0.944	1.111	0.966	1.34	42	61	49	41	35	61	49	41	32	24
Percentage of AccrualForTaxesOtherThanIncomeTaxesCurrentAndNoncurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:AccruedIncomeTaxes

Period End	2020-09-30	2020-06-30	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-03-31	2013-12-31	2012-12-31
Value	0.026	0.266	0.0	0.0	0.0	0.648	0.0	0.0	0.0	0.199	0.0	0.0	0.0	2.938	0.0	0.0	0.0	0.0	0.0	0.0	0.229	1.572	0.0	0.0	5.889	17	11
Percentage of AccruedIncomeTaxes	100.0	100.0	0.0	0.0	0.0	100.0	0.0	0.0	0.0	100.0	0.0	0.0	0.0	100.0	0.0	0.0	0.0	0.0	0.0	0.0	100.0	100.0	0.0	0.0	100.0	100.0	100.0

us-gaap:AccruedLiabilitiesCurrentAndNoncurrent

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	2.167	0.978	0.398	4.643	3.766	5.998	6.239	6.716	6.778	5.951	30	8.909	7.171	6.06	7.913	8.077	7.369	6.023	6.59	7.29	6.512	12	9.58	8.973	9.106	5.756	5.339	6.199	7.423	6.995	13	5.787
Percentage of AccruedLiabilitiesCurrentAndNoncurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:AreaOfRealEstateProperty

Period End	2021-06-30	2020-12-31	2020-03-31
Value	25	24	24
Percentage of AreaOfRealEstateProperty	100.0	100.0	100.0

us-gaap:AssetsHeldForSaleLongLivedFairValueDisclosure

Period End	2021-06-30	2021-03-31	2020-12-31
Value	142	70	61
Percentage of AssetsHeldForSaleLongLivedFairValueDisclosure	100.0	100.0	100.0

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperation us-gaap:DisposalGroupClassification

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperation

us-gaap:DiscontinuedOperationsHeldforsale

Period End	2021-06-30	2021-03-31	2020-12-31
Value	142	70	61
Percentage of AssetsOfDisposalGroupIncludingDiscontinuedOperation	100.0	100.0	100.0

us-gaap:CapitalLeaseObligations

Period End	2020-12-31	2019-12-31
Value	860000.0	989000.0
Percentage of CapitalLeaseObligations	100.0	100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByMeasurementBasis

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:CarryingReportedAmountFairValueDisclosure

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	147	520	486	105	74	559	26	25	24	30	25	1162	144	45	29	43	29	23	36	25	23	61	41	42	31	45	35	31	41	48	285	14
Percentage of CashAndCashEquivalentsFairValueDisclosure	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:EstimateOfFairValueFairValueDisclosure

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	147	520	486	105	74	559	26	25	24	30	25	1162	144	45	29	43	29	23	36	25	23	61	41	42	31	45	35	31	41	48	285	14
Percentage of CashAndCashEquivalentsFairValueDisclosure	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:DebtInstrument

us-gaap:DebtInstrumentCarryingAmount

glpi:SeniorUnsecuredNotes3.35PercentDue2024

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2018-12-31
Value	400	400	400	400	400	400	400	400	0.0
Percentage of DebtInstrumentCarryingAmount	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0

glpi:SeniorUnsecuredNotes4.00PercentDue2030

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2018-12-31
Value	700	700	700	700	700	700	700	700	0.0
Percentage of DebtInstrumentCarryingAmount	175.0	175.0	175.0	175.0	175.0	175.0	175.0	175.0	0.0

glpi:SeniorUnsecuredNotes400PercentDue2031

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2019-12-31
Value	700	700	700	700	500	0.0
Percentage of DebtInstrumentCarryingAmount	175.0	175.0	175.0	175.0	125.0	0.0

glpi:SeniorUnsecuredNotes5.250PercentDue2025

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2017-12-31
Value	850	850	850	850	850	850	850	850	850	850	850	850	500	0.0
Percentage of DebtInstrumentCarryingAmount	212.5	212.5	212.5	212.5	212.5	212.5	212.5	212.5	0.0	0.0	0.0	0.0	0.0	0.0

glpi:SeniorUnsecuredNotes5.300PercentDue2029

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2017-12-31
Value	750	750	750	750	750	750	750	750	750	750	750	750	0.0
Percentage of DebtInstrumentCarryingAmount	187.5	187.5	187.5	187.5	187.5	187.5	187.5	187.5	0.0	0.0	0.0	0.0	0.0

glpi:SeniorUnsecuredNotes5.375PercentDue2026

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2015-12-31
Value	975	975	975	975	975	975	975	975	975	975	975	975	975	975	975	975	975	975	975	0.0
Percentage of DebtInstrumentCarryingAmount	243.8	243.8	243.8	243.8	243.8	243.8	243.8	243.8	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

glpi:SeniorUnsecuredNotes5.750PercentDue2028

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2017-12-31
Value	500	500	500	500	500	500	500	500	500	500	500	500	500	0.0
Percentage of DebtInstrumentCarryingAmount	125.0	125.0	125.0	125.0	125.0	125.0	125.0	125.0	0.0	0.0	0.0	0.0	0.0	0.0

glpi:TermLoanA2Facility

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2019-12-31
Value	424	424	424	424	424	0.0
Percentage of DebtInstrumentCarryingAmount	106.0	106.0	106.0	106.0	106.0	0.0

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2017-12-31
Value	40	42	45	47	56	43	48	51	44	46	49	51	38
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredCompensationLiabilityCurrent

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	32	25	22	22	17	14	14	12
Percentage of DeferredCompensationLiabilityCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredCompensationPlanAssets

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	35	28	22	22	17	14	14	12
Percentage of DeferredCompensationPlanAssets	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredIncomeTaxAssetsNet

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2017-12-31
Value	5668000.0	5584000.0	5690000.0	5654000.0	6561000.0	5529000.0	6056000.0	5812000.0	5721000.0	5528000.0	5178000.0	4478000.0
Percentage of DeferredIncomeTaxAssetsNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredRevenueLeasesNet

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2015-12-31
Value	331	332	333	368	515	337	328	319	311	302	293	281	265	248	232	215	198	182	166	107
Percentage of DeferredRevenueLeasesNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredTaxAssetsGross

Period End	2020-12-31	2019-12-31
Value	9431000.0	8037000.0
Percentage of DeferredTaxAssetsGross	100.0	100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

Period End	2020-12-31
Value	310000.0
Percentage of DeferredTaxAssetsOperatingLossCarryforwards	100.0

us-gaap:DeferredTaxAssetsOther

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31
Value	1170000.0	596000.0	313000.0	0
Percentage of DeferredTaxAssetsOther	100.0	100.0	100.0	0.0

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	6443000.0	5844000.0	5405000.0	4823000.0	5818000.0	4414000.0	679000.0	0
Percentage of DeferredTaxAssetsPropertyPlantAndEquipment	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31	2012-12-31
Value	1.508	1.597	1.416	1.597	1.655	2.125	2.015	2.228	2.859
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31	2012-12-31
Value	1813000.0	1636000.0	1460000.0	1284000.0	1624000.0	1365000.0	1107000.0	823000.0	577000.0
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31	2012-12-31
Value	0.556	0.624	0.757	0.902	2.192	2.959	0.336	3.459	7.84
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationAccountsPayable us-gaap:BalanceSheetLocation, us-gaap:DisposalGroupClassification

us-gaap:DisposalGroupIncludingDiscontinuedOperationAccountsPayable

us-gaap:OtherLiabilities, us-gaap:DiscontinuedOperationsHeldforsale

Period End	2021-06-30	2021-03-31	2020-12-31
Value	4000.0	87000.0	8000.0
Percentage of DisposalGroupIncludingDiscontinuedOperationAccountsPayable	100.0	100.0	100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities us-gaap:BalanceSheetLocation, us-gaap:DisposalGroupClassification

us-gaap:DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities

us-gaap:OtherLiabilities, us-gaap:DiscontinuedOperationsHeldforsale

Period End	2021-06-30	2021-03-31	2020-12-31
Value	3739000.0	3830000.0	3387000.0
Percentage of DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities	100.0	100.0	100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents us-gaap:DisposalGroupClassification

us-gaap:DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents

us-gaap:DiscontinuedOperationsHeldforsale

Period End	2021-06-30	2021-03-31	2020-12-31
Value	25	30	22
Percentage of DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents	100.0	100.0	100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherAssets us-gaap:DisposalGroupClassification

us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherAssets

us-gaap:DiscontinuedOperationsHeldforsale

Period End	2021-06-30	2021-03-31	2020-12-31
Value	1170000.0	2111000.0	2157000.0
Percentage of DisposalGroupIncludingDiscontinuedOperationOtherAssets	100.0	100.0	100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherLiabilities us-gaap:BalanceSheetLocation, us-gaap:DisposalGroupClassification

us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherLiabilities

us-gaap:OtherLiabilities, us-gaap:DiscontinuedOperationsHeldforsale

Period End	2021-06-30	2021-03-31	2020-12-31
Value	828000.0	804000.0	710000.0
Percentage of DisposalGroupIncludingDiscontinuedOperationOtherLiabilities	100.0	100.0	100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment us-gaap:BusinessAcquisition, us-gaap:DisposalGroupClassification

us-gaap:DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment

glpi:TropicanaLasVegas, us-gaap:DiscontinuedOperationsHeldforsale

Period End	2021-06-30
Value	77
Percentage of DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment	100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment us-gaap:DisposalGroupClassification

us-gaap:DiscontinuedOperationsHeldforsale

Period End	2021-06-30	2021-03-31	2020-12-31
Value	9.873	9.153	8.78
Percentage of DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment	12.7	0.0	0.0

us-gaap:EmployeeRelatedLiabilitiesCurrentAndNoncurrent

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2012-12-31
Value	3.404	1.202	5.849	4.417	3.493	3.154	13	10	8.12	6.848	17	14	17	3.129	10	6.884	4.825	3.385	10	8.221	12	5.096	13	11	9.14	6.387	12	10	10	8.135	10	3.507
Percentage of EmployeeRelatedLiabilitiesCurrentAndNoncurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:PerformanceShares

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30
Value	16	18	9.0	11	15	18	8.9	11	13	15	8.9	11	13	18	9.9	12	14	17	9.6	12	15	17	11	12	14	16	9.6	10
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:RestrictedStock

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31
Value	5.6	6.8	3.2	4.5	9.1	10	5.1	6.8	8.5	10	5.4	6.6	7.8	10	5.4	6.6	7.9	8.9	5.7	7.7	9.6	11	8.6	9.9	11	12	9.6	10	14	6.4	4.7
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	34.8	36.6	35.6	40.5	58.3	59.7	57.3	61.8	64.4	69.3	60.7	60.0	60.0	56.4	54.5	53.2	53.4	51.7	59.4	62.1	63.6	64.2	78.2	76.7	75.8	75.7	100.0	100.0	0.0	0.0	0.0

us-gaap:FinanceLeaseLiability

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	793000.0	827000.0	860000.0	893000.0
Percentage of FinanceLeaseLiability	100.0	100.0	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive us-gaap:FairValueByAssetClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

glpi:LandRights

Period End	2021-03-31	2020-12-31	2020-09-30
Value	560	560	594
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	100.0	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths us-gaap:FairValueByAssetClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

glpi:LandRights

Period End	2021-06-30	2020-12-31
Value	13	11
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear us-gaap:FairValueByAssetClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

glpi:LandRights

Period End	2021-06-30	2021-03-31	2020-09-30
Value	6665000.0	8529000.0	3020000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	100.0	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive us-gaap:FairValueByAssetClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

glpi:LandRights

Period End	2021-03-31	2020-12-31	2020-09-30
Value	11	11	12
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	100.0	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour us-gaap:FairValueByAssetClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

glpi:LandRights

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	13	11	11	12
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	100.0	100.0	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree us-gaap:FairValueByAssetClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

glpi:LandRights

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	13	11	11	12
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	100.0	100.0	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo us-gaap:FairValueByAssetClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

glpi:LandRights

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	13	11	11	12
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	100.0	100.0	100.0	100.0

us-gaap:GroundLeasesAccumulatedAmortization us-gaap:FairValueByAssetClass

us-gaap:GroundLeasesAccumulatedAmortization

glpi:LandRights

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31
Value	55	52	49	48	45	42	39	36	33	30	27
Percentage of GroundLeasesAccumulatedAmortization	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:GroundLeasesGross us-gaap:FairValueByAssetClass

us-gaap:GroundLeasesGross

glpi:LandRights

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31
Value	735	667	667	694	694	694	694	694	694	700	700
Percentage of GroundLeasesGross	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:GroundLeasesNet

Period End	2020-12-31	2019-12-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2015-12-31
Value	769	838	673	631	634	637	640	642	645	588	590	593	595	0.0
Percentage of GroundLeasesNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0

us-gaap:GroundLeasesNet us-gaap:FairValueByAssetClass

glpi:LandRights

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31
Value	679	615	617	645	648	651	654	657	660	670	673
Percentage of GroundLeasesNet	0.0	0.0	80.3	0.0	0.0	0.0	78.1	0.0	0.0	0.0	100.0

us-gaap:InterestPayableCurrentAndNoncurrent

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31
Value	70	81	72	83	58	77	60	84	53	98	45	92	35	75	33	75	33	75	33	73	29	42	17	42	17	42	17	42	17	42	18
Percentage of InterestPayableCurrentAndNoncurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:InvestmentBuildingAndBuildingImprovements us-gaap:BusinessAcquisition

us-gaap:InvestmentBuildingAndBuildingImprovements

glpi:EvansvilleExchangeTransaction

Period End	2020-12-31
Value	163
Percentage of InvestmentBuildingAndBuildingImprovements	100.0

glpi:IsleCasinoBettendorfIA

Period End	2020-12-31
Value	85
Percentage of InvestmentBuildingAndBuildingImprovements	52.2

glpi:IsleCasinoWaterlooIA

Period End	2020-12-31
Value	77
Percentage of InvestmentBuildingAndBuildingImprovements	47.8

glpi:TropicanaEvansvilleIN

Period End	2020-12-31
Value	136
Percentage of InvestmentBuildingAndBuildingImprovements	83.9

glpi:TropicanaLasVegas

Period End	2020-12-31	2020-09-30	2020-06-30	2019-06-30
Value	81	81	81	0.0
Percentage of InvestmentBuildingAndBuildingImprovements	49.8	0.0	0.0	0.0

us-gaap:LandAndLandImprovements us-gaap:BusinessAcquisition

us-gaap:LandAndLandImprovements

glpi:EvansvilleExchangeTransaction

Period End	2020-12-31
Value	93
Percentage of LandAndLandImprovements	100.0

glpi:IsleCasinoBettendorfIA

Period End	2020-12-31
Value	29
Percentage of LandAndLandImprovements	31.6

glpi:IsleCasinoWaterlooIA

Period End	2020-12-31
Value	64
Percentage of LandAndLandImprovements	68.4

glpi:TropicanaEvansvilleIN

Period End	2020-12-31
Value	47
Percentage of LandAndLandImprovements	50.5

glpi:TropicanaLasVegas

Period End	2020-12-31	2020-09-30	2020-06-30	2019-06-30
Value	226	226	226	0.0
Percentage of LandAndLandImprovements	240.9	0.0	0.0	0.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

Period End	2021-06-30	2020-12-31
Value	13	11
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	100.0	100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

Period End	2021-06-30	2021-03-31	2020-09-30
Value	6833000.0	8310000.0	3440000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	100.0	100.0	100.0

us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation us-gaap:BalanceSheetLocation, us-gaap:DisposalGroupClassification

us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation

us-gaap:OtherLiabilities, us-gaap:DiscontinuedOperationsHeldforsale

Period End	2021-06-30	2021-03-31	2020-12-31
Value	9482000.0	7359000.0	6829000.0
Percentage of LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	100.0	100.0	100.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CreditFacility

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

glpi:TermLoanA1Facility

Period End	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30
Value	449	449	449	449	449	525	525	525	525	525	825	825	825	825	825	825	825	825
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:LinesOfCreditFairValueDisclosure us-gaap:FairValueByMeasurementBasis

us-gaap:LinesOfCreditFairValueDisclosure

us-gaap:CarryingReportedAmountFairValueDisclosure

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31
Value	424	424	424	424	649	1623	495	509	865	866	927	525	525	1010	1055	1065	1140	1195	1290	1290	1145	448	490	490	515	525	558	496	476	450	300
Percentage of LinesOfCreditFairValueDisclosure	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:EstimateOfFairValueFairValueDisclosure

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31
Value	424	424	424	424	635	1605	493	503	859	857	909	519	515	1000	1045	1056	1133	1184	1272	1283	1129	440	479	467	499	509	535	474	459	441	294
Percentage of LinesOfCreditFairValueDisclosure	100.0	100.0	100.0	100.0	97.9	98.9	99.7	99.0	99.4	99.0	98.1	99.0	98.1	99.0	99.1	99.2	99.4	99.2	98.7	99.5	98.6	98.2	97.9	95.4	97.0	97.0	95.9	95.8	96.5	98.0	98.2

us-gaap:LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2016-09-30	2016-06-30	2015-12-31
Value	5759	5757	5754	5752	5768	6255	5737	5749	5796	5795	5853	4661	4513	2510
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	2650	3625	3625	3625
Percentage of LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive	100.0	100.0	100.0	100.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive

Period End	2020-12-31
Value	850
Percentage of LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive	100.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour

Period End	2020-12-31
Value	400
Percentage of LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour	100.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree

Period End	2020-12-31
Value	924
Percentage of LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree	100.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo

Period End	2020-12-31
Value	142000.0
Percentage of LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo	100.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearsTwoAndThree

Period End	2021-06-30	2021-03-31	2020-09-30
Value	924	924	424
Percentage of LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearsTwoAndThree	100.0	100.0	100.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	139000.0	137000.0	135000.0	134000.0
Percentage of LongTermDebtAndCapitalLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths	100.0	100.0	100.0	100.0

us-gaap:LongtermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearsFourAndFive

Period End	2021-06-30	2021-03-31	2020-09-30
Value	2225	1250	1750
Percentage of LongtermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearsFourAndFive	100.0	100.0	100.0

us-gaap:NotesPayableFairValueDisclosure us-gaap:FairValueByMeasurementBasis

us-gaap:NotesPayableFairValueDisclosure

us-gaap:CarryingReportedAmountFairValueDisclosure

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2013-12-31
Value	5375	5375	5375	5375	5175	4675	5290	5290	4975	4975	4975	4975	4031	3425	3425	3425	3425	3425	3425	3425	3425	2050	2050	2050	2050	2050	2050	2050	2050
Percentage of NotesPayableFairValueDisclosure	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:EstimateOfFairValueFairValueDisclosure

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2013-12-31
Value	6053	5903	6026	5802	5474	4052	5707	5681	5316	5191	4958	5107	4050	3477	3574	3634	3646	3556	3573	3643	3557	2084	2014	2051	2087	2107	2091	2101	2058
Percentage of NotesPayableFairValueDisclosure	112.6	109.8	112.1	108.0	105.8	86.7	107.9	107.4	106.9	104.4	99.7	102.7	100.5	101.5	104.4	106.1	106.5	103.8	104.3	106.4	103.9	101.7	98.3	100.1	101.8	102.8	102.0	102.5	100.4

us-gaap:OperatingLeasesFutureMinimumPaymentsReceivable

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	17456	17061	17315	17559
Percentage of OperatingLeasesFutureMinimumPaymentsReceivable	100.0	100.0	100.0	100.0

us-gaap:OperatingLeasesFutureMinimumPaymentsReceivableCurrent

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	530	761	1015	253
Percentage of OperatingLeasesFutureMinimumPaymentsReceivableCurrent	100.0	100.0	100.0	100.0

us-gaap:OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	977	931	931	929
Percentage of OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears	100.0	100.0	100.0	100.0

us-gaap:OperatingLeasesFutureMinimumPaymentsReceivableInFourYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	976	930	930	961
Percentage of OperatingLeasesFutureMinimumPaymentsReceivableInFourYears	100.0	100.0	100.0	100.0

us-gaap:OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	1008	962	962	987
Percentage of OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears	100.0	100.0	100.0	100.0

us-gaap:OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	1033	987	987	1014
Percentage of OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears	100.0	100.0	100.0	100.0

us-gaap:OperatingLeasesFutureMinimumPaymentsReceivableThereafter

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	12930	12488	12488	13411
Percentage of OperatingLeasesFutureMinimumPaymentsReceivableThereafter	100.0	100.0	100.0	100.0

us-gaap:OtherLiabilities

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2015-12-31	2014-03-31	2013-12-31	2012-12-31
Value	42	38	39	29	27	22	26	24	25	25	26	27	27	27	25	23	22	20	19	17	14	12	0.109
Percentage of OtherLiabilities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:PrepaidExpenseCurrentAndNoncurrent

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2015-12-31	2014-03-31	2013-12-31	2012-12-31
Value	2.152	1.461	2.098	2.195	2.582	4.544	4.228	2.665	2.943	3.462	30	10	4.417	8.282	8.452	9.762	4.379	8.122	7.477	7.908	7.667	5.983	1.141
Percentage of PrepaidExpenseCurrentAndNoncurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:RealEstateAccumulatedDepreciation

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31	2012-12-31
Value	1410	1200	983	857	756	660	565	484	0.0
Percentage of RealEstateAccumulatedDepreciation	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0

us-gaap:RealEstateAccumulatedDepreciation us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty

glpi:RentalProperties

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	1409	1199	982	856	756	660	565
Percentage of RealEstateAccumulatedDepreciation	99.9	99.9	99.9	99.9	100.0	100.0	100.0

us-gaap:RealEstateAccumulatedDepreciation us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

glpi:A1stJackpotCasinoMS

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31
Value	1.356	0.982	0.608	0.234
Percentage of RealEstateAccumulatedDepreciation	0.1	0.1	0.1	0.0

glpi:AmeristarBlackHawkCO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	24	13	2.348	0.0	0.0
Percentage of RealEstateAccumulatedDepreciation	1.8	1.1	0.2	0.0	0.0

glpi:AmeristarCouncilBluffsIA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	9.648	5.332	0.919	0.0	0.0
Percentage of RealEstateAccumulatedDepreciation	0.7	0.4	0.1	0.0	0.0

glpi:AmeristarEastChicagoIN

Period End	2020-12-31	2019-12-31	2018-12-31
Value	10	5.788	0.998
Percentage of RealEstateAccumulatedDepreciation	0.7	0.5	0.1

glpi:AmeristarKansasCityMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	24	13	2.356	0.0	0.0
Percentage of RealEstateAccumulatedDepreciation	1.8	1.1	0.2	0.0	0.0

glpi:AmeristarSt.CharlesMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	33	18	3.141	0.0	0.0
Percentage of RealEstateAccumulatedDepreciation	2.4	1.5	0.3	0.0	0.0

glpi:AmeristarVicksburgMS

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	10	5.631	0.971	0.0	0.0
Percentage of RealEstateAccumulatedDepreciation	0.7	0.5	0.1	0.0	0.0

glpi:ArgosyCasinoAltonIL

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	4.741	4.599	4.453	4.302	4.142	3.973	3.791	3.411
Percentage of RealEstateAccumulatedDepreciation	0.3	0.4	0.5	0.5	0.5	0.6	0.7	0.7

glpi:ArgosyCasinoRiversideMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	72	67	63	58	53	48	43	38
Percentage of RealEstateAccumulatedDepreciation	5.1	5.6	6.4	6.8	7.1	7.4	7.7	7.9

glpi:BelleofBatonRougeLA

Period End	2020-12-31	2019-12-31	2018-12-31
Value	5.488	3.16	0.545
Percentage of RealEstateAccumulatedDepreciation	0.4	0.3	0.1

glpi:BelterraCasinoResortIN

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	16	10	1.821	0.0	0.0
Percentage of RealEstateAccumulatedDepreciation	1.1	0.8	0.2	0.0	0.0

glpi:BelterraParkGamingAndEntertainmentCenterOH

Period End	2020-12-31
Value	1.401
Percentage of RealEstateAccumulatedDepreciation	0.1

glpi:BoomtownBiloxiMS

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	52	49	46	43	40	37	34	30
Percentage of RealEstateAccumulatedDepreciation	3.7	4.1	4.7	5.1	5.3	5.7	6.0	6.3

glpi:BoomtownBossierCityLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	8.826	4.829	0.833	0.0	0.0
Percentage of RealEstateAccumulatedDepreciation	0.6	0.4	0.1	0.0	0.0

glpi:BoomtownNewOrleansLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	5.238	2.866	0.494	0.0	0.0
Percentage of RealEstateAccumulatedDepreciation	0.4	0.2	0.1	0.0	0.0

glpi:CasinoQueenInEastStLouisIllinois

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	18	16	14	12	9.005	5.961	2.917
Percentage of RealEstateAccumulatedDepreciation	1.3	1.4	1.5	1.4	1.2	0.9	0.5

glpi:GLPICorporateOffice

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	1.435	1.159	0.883	0.607	0.331	0.058	0.0
Percentage of RealEstateAccumulatedDepreciation	0.1	0.1	0.1	0.1	0.0	0.0	0.0

glpi:HollywoodCasinoAtCharlesTownRacesWV

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	146	138	129	120	112	103	93	84
Percentage of RealEstateAccumulatedDepreciation	10.4	11.5	13.2	14.1	14.8	15.6	16.6	17.5

glpi:HollywoodCasinoAtPennNationalRaceCoursePA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	88	81	74	68	61	54	48	41
Percentage of RealEstateAccumulatedDepreciation	6.3	6.8	7.6	8.0	8.1	8.3	8.5	8.5

glpi:HollywoodCasinoAuroraIL

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	72	68	64	60	56	52	48	44
Percentage of RealEstateAccumulatedDepreciation	5.2	5.7	6.6	7.1	7.5	8.0	8.6	9.2

glpi:HollywoodCasinoBangorME

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	38	35	31	28	25	22	19	16
Percentage of RealEstateAccumulatedDepreciation	2.7	2.9	3.3	3.4	3.4	3.4	3.5	3.4

glpi:HollywoodCasinoColumbusOH

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	60	52	45	38	30	23	16	8.629
Percentage of RealEstateAccumulatedDepreciation	4.3	4.4	4.6	4.4	4.1	3.5	2.8	1.8

glpi:HollywoodCasinoGulfCoastMS

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31
Value	56	53	50	47
Percentage of RealEstateAccumulatedDepreciation	4.0	4.4	5.1	5.5

glpi:HollywoodCasinoJolietIL

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	64	61	58	55	49	44	38	33
Percentage of RealEstateAccumulatedDepreciation	4.6	5.1	6.0	6.4	6.6	6.7	6.9	6.9

glpi:HollywoodCasinoLawrenceburgIN

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	163	150	137	124	111	98	85	71
Percentage of RealEstateAccumulatedDepreciation	11.6	12.5	14.0	14.5	14.7	14.8	15.0	14.9

glpi:HollywoodCasinoStLouisMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	98	87	75	63	51	40	28	16
Percentage of RealEstateAccumulatedDepreciation	7.0	7.3	7.7	7.4	6.8	6.1	5.0	3.4

glpi:HollywoodCasinoToledoOH

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	45	40	34	29	24	19	13	8.44
Percentage of RealEstateAccumulatedDepreciation	3.2	3.3	3.5	3.4	3.2	2.9	2.4	1.7

glpi:HollywoodCasinoTunicaMS

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	29	28	26	25	23	22	20	18
Percentage of RealEstateAccumulatedDepreciation	2.1	2.4	2.7	2.9	3.1	3.3	3.6	3.9

glpi:HollywoodCasinoatDaytonRacewayOH

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	17	14	12	9.382	6.598	3.815	1.031
Percentage of RealEstateAccumulatedDepreciation	1.3	1.2	1.2	1.1	0.9	0.6	0.2

glpi:HollywoodCasinoatMahoningValleyRaceTrackOH

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	19	16	13	9.97	6.922	3.875	0.827
Percentage of RealEstateAccumulatedDepreciation	1.4	1.3	1.3	1.2	0.9	0.6	0.1

glpi:IsleCasinoBettendorfIA

Period End	2020-12-31
Value	0.114
Percentage of RealEstateAccumulatedDepreciation	0.0

glpi:IsleCasinoWaterlooIA

Period End	2020-12-31
Value	0.105
Percentage of RealEstateAccumulatedDepreciation	0.0

glpi:JackpotPropertiesNV

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	7.29	4.596	1.669	0.0	0.0
Percentage of RealEstateAccumulatedDepreciation	0.5	0.4	0.2	0.0	0.0

glpi:LAubergeBatonRougeLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	14	7.747	1.336	0.0	0.0
Percentage of RealEstateAccumulatedDepreciation	1.0	0.6	0.1	0.0	0.0

glpi:LAubergeLakeCharlesLA

Period End	2020-12-31	2019-12-31	2018-12-31
Value	28	15	2.657
Percentage of RealEstateAccumulatedDepreciation	2.0	1.3	0.3

glpi:LumierePlaceMO

Period End	2020-12-31
Value	2.151
Percentage of RealEstateAccumulatedDepreciation	0.2

glpi:MResortNV

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	45	40	35	30	26	21	16	11
Percentage of RealEstateAccumulatedDepreciation	3.2	3.4	3.6	3.6	3.5	3.2	2.9	2.4

glpi:PlainridgeParkCasinoMA

Period End	2020-12-31	2019-12-31	2018-12-31
Value	8.823	4.827	0.832
Percentage of RealEstateAccumulatedDepreciation	0.6	0.4	0.1

glpi:RiverCityHotelandCasinoMO

Period End	2020-12-31	2019-12-31	2018-12-31
Value	18	9.924	1.711
Percentage of RealEstateAccumulatedDepreciation	1.3	0.8	0.2

glpi:TheMeadowsRacetrackandCasinoPA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	24	18	12	7.311	1.651
Percentage of RealEstateAccumulatedDepreciation	1.7	1.6	1.3	0.9	0.2

glpi:TropCasinoGreenvilleMS

Period End	2020-12-31	2019-12-31	2018-12-31
Value	1.544	0.845	0.146
Percentage of RealEstateAccumulatedDepreciation	0.1	0.1	0.0

glpi:TropicanaAtlanticCityNJ

Period End	2020-12-31	2019-12-31	2018-12-31
Value	28	15	2.711
Percentage of RealEstateAccumulatedDepreciation	2.0	1.3	0.3

glpi:TropicanaLaughlinNV

Period End	2020-12-31	2019-12-31	2018-12-31
Value	6.428	3.517	0.606
Percentage of RealEstateAccumulatedDepreciation	0.5	0.3	0.1

glpi:ZiaParkCasinoNM

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	23	21	19	18	16	14	12	11
Percentage of RealEstateAccumulatedDepreciation	1.6	1.8	2.0	2.1	2.2	2.2	2.3	2.3

us-gaap:RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	6030	5749	5762	2461	2438	2297	2288	2050
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty

glpi:RentalProperties

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	6021	5740	5753	2453	2430	2288	2288
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	99.9	99.9	99.9	99.7	99.7	99.6	100.0

us-gaap:RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

glpi:AmeristarBlackHawkCO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	334	334	334	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	5.5	5.8	5.8	0.0	0.0

glpi:AmeristarCouncilBluffsIA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	109	109	109	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	1.8	1.9	1.9	0.0	0.0

glpi:AmeristarKansasCityMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	271	271	271	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	4.5	4.7	4.7	0.0	0.0

glpi:AmeristarSt.CharlesMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	437	437	437	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	7.3	7.6	7.6	0.0	0.0

glpi:AmeristarVicksburgMS

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	96	96	96	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	1.6	1.7	1.7	0.0	0.0

glpi:BelterraCasinoResortIN

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	172	172	172	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	2.9	3.0	3.0	0.0	0.0

glpi:BelterraParkGamingAndEntertainmentCenterOH

Period End	2020-12-31
Value	45
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	0.8

glpi:BoomtownBossierCityLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	107	107	107	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	1.8	1.9	1.9	0.0	0.0

glpi:BoomtownNewOrleansLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	58	58	58	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	1.0	1.0	1.0	0.0	0.0

glpi:GLPICorporateOffice

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	8.55	8.523	8.523	8.523	8.491	8.465	0.0
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	0.1	0.1	0.1	0.3	0.3	0.4	0.0

glpi:HollywoodCasinoAuroraIL

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	97	97	97	97	97	97	97	98
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	1.6	1.7	1.7	4.0	4.0	4.3	4.3	4.8

glpi:HollywoodCasinoColumbusOH

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	188	188	188	188	188	188	188	188
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	3.1	3.3	3.3	7.7	7.7	8.2	8.2	9.2

glpi:HollywoodCasinoLawrenceburgIN

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	342	342	342	342	342	342	342	342
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	5.7	6.0	5.9	13.9	14.0	14.9	15.0	16.7

glpi:HollywoodCasinoToledoOH

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	144	144	144	144	144	144	144	144
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	2.4	2.5	2.5	5.9	5.9	6.3	6.3	7.0

glpi:IsleCasinoBettendorfIA

Period End	2020-12-31
Value	85
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	1.4

glpi:IsleCasinoWaterlooIA

Period End	2020-12-31
Value	77
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	1.3

glpi:JackpotPropertiesNV

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	61	61	61	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	1.0	1.1	1.1	0.0	0.0

glpi:LAubergeBatonRougeLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	178	178	178	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	3.0	3.1	3.1	0.0	0.0

glpi:LumierePlaceMO

Period End	2020-12-31
Value	219
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	3.6

us-gaap:RealEstateAndAccumulatedDepreciationCarryingAmountOfLand

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	2667	2552	2552	2057	2057	453	454	382
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:RealEstateAndAccumulatedDepreciationCarryingAmountOfLand us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty

glpi:RentalProperties

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	2660	2544	2544	2057	2056	452	453
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	99.7	99.7	99.7	100.0	100.0	99.8	99.8

us-gaap:RealEstateAndAccumulatedDepreciationCarryingAmountOfLand us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

glpi:AmeristarBlackHawkCO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	243	243	243	238	238
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	9.1	9.5	9.5	11.6	11.6

glpi:AmeristarCouncilBluffsIA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	84	84	84	78	78
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	3.1	3.3	3.3	3.8	3.8

glpi:AmeristarKansasCityMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	239	239	239	222	222
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	9.0	9.4	9.4	10.8	10.8

glpi:AmeristarSt.CharlesMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	375	375	375	363	363
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	14.1	14.7	14.7	17.6	17.7

glpi:AmeristarVicksburgMS

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	128	128	128	97	97
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	4.8	5.0	5.0	4.8	4.8

glpi:ArgosyCasinoRiversideMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	23	23	23	23	23	23	23	23
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	0.9	0.9	0.9	1.1	1.1	5.2	5.2	6.1

glpi:BelterraCasinoResortIN

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	63	63	63	56	56
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	2.4	2.5	2.5	2.7	2.7

glpi:BelterraParkGamingAndEntertainmentCenterOH

Period End	2020-12-31
Value	11
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	0.4

glpi:BoomtownBiloxiMS

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	3.286	3.286	3.286	3.286	3.286	3.286	3.423	3.423
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	0.1	0.1	0.1	0.2	0.2	0.7	0.8	0.9

glpi:BoomtownBossierCityLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	79	79	79	77	77
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	3.0	3.1	3.1	3.7	3.7

glpi:BoomtownNewOrleansLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	46	46	46	43	43
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	1.7	1.8	1.8	2.1	2.1

glpi:GLPICorporateOffice

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	0.75	0.75	0.75	0.75	0.75	0.75	0.736
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	0.0	0.0	0.0	0.0	0.0	0.2	0.2

glpi:HollywoodCasinoAuroraIL

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	4.936	4.936	4.936	4.936	4.936	4.937	4.937	4.937
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	0.2	0.2	0.2	0.2	0.2	1.1	1.1	1.3

glpi:HollywoodCasinoColumbusOH

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	38	38	38	38	38	38	38	38
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	1.4	1.5	1.5	1.9	1.9	8.4	8.4	10.0

glpi:HollywoodCasinoJolietIL

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	19	19	19	19	19	19	19	19
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	0.7	0.8	0.8	0.9	0.9	4.2	4.2	5.0

glpi:HollywoodCasinoLawrenceburgIN

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	15	15	15	15	15	15	15	15
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	0.6	0.6	0.6	0.7	0.7	3.4	3.4	4.0

glpi:HollywoodCasinoStLouisMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	40	40	41	44	44	44	44	44
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	1.5	1.6	1.6	2.1	2.1	9.7	9.7	11.6

glpi:HollywoodCasinoToledoOH

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	11	11	11	12	12	12	12	12
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	0.4	0.5	0.5	0.6	0.6	2.6	2.6	3.1

glpi:IsleCasinoBettendorfIA

Period End	2020-12-31
Value	29
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	1.1

glpi:IsleCasinoWaterlooIA

Period End	2020-12-31
Value	64
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	2.4

glpi:JackpotPropertiesNV

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	48	48	48	45	45
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	1.8	1.9	1.9	2.2	2.2

glpi:LAubergeBatonRougeLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	205	205	205	199	199
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	7.7	8.0	8.0	9.7	9.7

glpi:LumierePlaceMO

Period End	2020-12-31
Value	26
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	1.0

glpi:MResortNV

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	65	65	65	65	65	66	66	66
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	2.5	2.6	2.6	3.2	3.2	14.6	14.6	17.3

glpi:Morgantown

Period End	2020-12-31
Value	30
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	1.1

glpi:TheMeadowsRacetrackandCasinoPA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	181	181	181	181	181
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	6.8	7.1	7.1	8.8	8.8

us-gaap:RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	-30.803	163	176	179	179	179	180	0.062
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty

glpi:RentalProperties

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	-30.888	163	176	179	179	179	180
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	100.3	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

glpi:ArgosyCasinoRiversideMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	-0.077	-0.077	-0.077	-0.077	-0.077	-0.077	0.0
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	0.2	-0.0	-0.0	-0.0	-0.0	-0.0	0.0

glpi:BoomtownBiloxiMS

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	-0.137	-0.137	-0.137	-0.137	-0.137	-0.137	0.0
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	0.4	-0.1	-0.1	-0.1	-0.1	-0.1	0.0

glpi:GLPICorporateOffice

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	0.085	0.058	0.058	0.058	0.026	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	-0.3	0.0	0.0	0.0	0.0	0.0	0.0

glpi:HollywoodCasinoAuroraIL

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	-0.383	-0.383	-0.383	-0.383	-0.383	-0.439	-0.439
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	1.2	-0.2	-0.2	-0.2	-0.2	-0.2	-0.2

glpi:HollywoodCasinoColumbusOH

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	0.105	0.105	0.105	0.105	0.105	0.105	0.105	0.062
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	-0.3	0.1	0.1	0.1	0.1	0.1	0.1	100.0

glpi:HollywoodCasinoJolietIL

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	-0.02	-0.02	-0.02	0.0	0.0	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	0.1	-0.0	-0.0	0.0	0.0	0.0	0.0

glpi:HollywoodCasinoLawrenceburgIN

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	-0.03	-0.03	-0.03	-0.03	-0.029	-0.029	0.0
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	0.1	-0.0	-0.0	-0.0	-0.0	-0.0	0.0

glpi:HollywoodCasinoStLouisMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	-3.239	-3.239	-3.049	0.0	0.0	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	10.5	-2.0	-1.7	0.0	0.0	0.0	0.0

glpi:HollywoodCasinoToledoOH

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	-0.201	-0.201	-0.201	0.0	0.0	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	0.7	-0.1	-0.1	0.0	0.0	0.0	0.0

glpi:HollywoodCasinoatMahoningValleyRaceTrackOH

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	94	94	94	94	94	94	94
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	-306.2	57.7	53.4	52.4	52.6	52.5	52.3

glpi:MResortNV

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	-0.436	-0.436	-0.436	-0.436	-0.426	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	1.4	-0.3	-0.2	-0.2	-0.2	0.0	0.0

glpi:ResortsCasinoTunicaMS

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31
Value	-12.86	-12.86	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	41.7	-7.9	0.0	0.0

glpi:TheMeadowsRacetrackandCasinoPA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	0.386	0.386	0.386	0.386	0.0
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	-1.3	0.2	0.2	0.2	0.0

glpi:TropicanaEvansvilleIN

Period End	2020-12-31	2019-12-31	2018-12-31
Value	-194.369	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	631.0	0.0	0.0

us-gaap:RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	6010	5581	5581	2281	2258	2117	2108	2050
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty

glpi:RentalProperties

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	6001	5573	5573	2272	2249	2108	2108
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	99.9	99.8	99.8	99.6	99.6	99.6	100.0

us-gaap:RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

glpi:AmeristarBlackHawkCO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	334	334	334	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	5.6	6.0	6.0	0.0	0.0

glpi:AmeristarCouncilBluffsIA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	109	109	109	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	1.8	2.0	2.0	0.0	0.0

glpi:AmeristarKansasCityMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	271	271	271	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	4.5	4.9	4.9	0.0	0.0

glpi:AmeristarSt.CharlesMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	437	437	437	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	7.3	7.8	7.8	0.0	0.0

glpi:AmeristarVicksburgMS

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	96	96	96	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	1.6	1.7	1.7	0.0	0.0

glpi:BelterraCasinoResortIN

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	172	172	172	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	2.9	3.1	3.1	0.0	0.0

glpi:BelterraParkGamingAndEntertainmentCenterOH

Period End	2020-12-31
Value	45
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	0.8

glpi:BoomtownBossierCityLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	107	107	107	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	1.8	1.9	1.9	0.0	0.0

glpi:BoomtownNewOrleansLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	58	58	58	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	1.0	1.0	1.0	0.0	0.0

glpi:GLPICorporateOffice

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	8.465	8.465	8.465	8.465	8.465	8.465	0.0
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	0.1	0.2	0.2	0.4	0.4	0.4	0.0

glpi:HollywoodCasinoAuroraIL

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	98	98	98	98	98	98	98	98
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	1.6	1.8	1.8	4.3	4.4	4.6	4.7	4.8

glpi:HollywoodCasinoToledoOH

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	144	144	144	144	144	144	144	144
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	2.4	2.6	2.6	6.3	6.4	6.8	6.8	7.0

glpi:IsleCasinoBettendorfIA

Period End	2020-12-31
Value	85
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	1.4

glpi:IsleCasinoWaterlooIA

Period End	2020-12-31
Value	77
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	1.3

glpi:JackpotPropertiesNV

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	61	61	61	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	1.0	1.1	1.1	0.0	0.0

glpi:LAubergeBatonRougeLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	178	178	178	0.0	0.0
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	3.0	3.2	3.2	0.0	0.0

glpi:LumierePlaceMO

Period End	2020-12-31
Value	219
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	3.6

us-gaap:RealEstateAndAccumulatedDepreciationInitialCostOfLand

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	2718	2556	2556	2058	2058	454	454	382
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:RealEstateAndAccumulatedDepreciationInitialCostOfLand us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty

glpi:RentalProperties

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	2711	2548	2548	2057	2057	453	453
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	99.7	99.7	99.7	100.0	100.0	99.8	99.8

us-gaap:RealEstateAndAccumulatedDepreciationInitialCostOfLand us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

glpi:AmeristarBlackHawkCO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	243	243	243	238	238
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	8.9	9.5	9.5	11.6	11.6

glpi:AmeristarCouncilBluffsIA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	84	84	84	78	78
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	3.1	3.3	3.3	3.8	3.8

glpi:AmeristarKansasCityMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	239	239	239	222	222
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	8.8	9.4	9.4	10.8	10.8

glpi:AmeristarSt.CharlesMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	375	375	375	363	363
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	13.8	14.7	14.7	17.6	17.6

glpi:AmeristarVicksburgMS

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	128	128	128	97	97
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	4.7	5.0	5.0	4.8	4.8

glpi:BelterraCasinoResortIN

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	63	63	63	56	56
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	2.3	2.5	2.5	2.7	2.7

glpi:BelterraParkGamingAndEntertainmentCenterOH

Period End	2020-12-31
Value	11
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	0.4

glpi:BoomtownBossierCityLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	79	79	79	77	77
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	2.9	3.1	3.1	3.7	3.7

glpi:BoomtownNewOrleansLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	46	46	46	43	43
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	1.7	1.8	1.8	2.1	2.1

glpi:GLPICorporateOffice

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	0.75	0.75	0.75	0.75	0.75	0.75	0.736
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	0.0	0.0	0.0	0.0	0.0	0.2	0.2

glpi:IsleCasinoBettendorfIA

Period End	2020-12-31
Value	29
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	1.1

glpi:IsleCasinoWaterlooIA

Period End	2020-12-31
Value	64
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	2.4

glpi:JackpotPropertiesNV

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	48	48	48	45	45
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	1.8	1.9	1.9	2.2	2.2

glpi:LAubergeBatonRougeLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	205	205	205	199	199
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	7.6	8.0	8.0	9.7	9.7

glpi:LumierePlaceMO

Period End	2020-12-31
Value	26
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	1.0

glpi:Morgantown

Period End	2020-12-31
Value	30
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand	1.1

us-gaap:RealEstateGrossAtCarryingValue

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31	2012-12-31
Value	8698	8301	8314	4519	4495	2750	2742	2433	0.0
Percentage of RealEstateGrossAtCarryingValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0

us-gaap:RealEstateGrossAtCarryingValue us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty

glpi:RentalProperties

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	8682	8285	8298	4510	4486	2741	2742
Percentage of RealEstateGrossAtCarryingValue	99.8	99.8	99.8	99.8	99.8	99.7	100.0

us-gaap:RealEstateGrossAtCarryingValue us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

glpi:AmeristarBlackHawkCO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	577	577	577	238	238
Percentage of RealEstateGrossAtCarryingValue	6.6	7.0	6.9	5.3	5.3

glpi:AmeristarCouncilBluffsIA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	193	193	193	78	78
Percentage of RealEstateGrossAtCarryingValue	2.2	2.3	2.3	1.7	1.8

glpi:AmeristarKansasCityMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	510	510	510	222	222
Percentage of RealEstateGrossAtCarryingValue	5.9	6.2	6.1	4.9	4.9

glpi:AmeristarSt.CharlesMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	813	813	813	363	363
Percentage of RealEstateGrossAtCarryingValue	9.4	9.8	9.8	8.0	8.1

glpi:AmeristarVicksburgMS

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	224	224	224	97	97
Percentage of RealEstateGrossAtCarryingValue	2.6	2.7	2.7	2.2	2.2

glpi:ArgosyCasinoRiversideMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	166	166	166	166	166	166	166	166
Percentage of RealEstateGrossAtCarryingValue	1.9	2.0	2.0	3.7	3.7	6.1	6.1	6.9

glpi:BelterraCasinoResortIN

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	236	236	236	56	56
Percentage of RealEstateGrossAtCarryingValue	2.7	2.8	2.8	1.2	1.3

glpi:BelterraParkGamingAndEntertainmentCenterOH

Period End	2020-12-31
Value	57
Percentage of RealEstateGrossAtCarryingValue	0.7

glpi:BoomtownBiloxiMS

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	66	66	66	66	66	66	66	66
Percentage of RealEstateGrossAtCarryingValue	0.8	0.8	0.8	1.5	1.5	2.4	2.4	2.7

glpi:BoomtownBossierCityLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	186	186	186	77	77
Percentage of RealEstateGrossAtCarryingValue	2.1	2.2	2.2	1.7	1.7

glpi:BoomtownNewOrleansLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	104	104	104	43	43
Percentage of RealEstateGrossAtCarryingValue	1.2	1.3	1.3	1.0	1.0

glpi:GLPICorporateOffice

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	9.3	9.273	9.273	9.273	9.241	9.215	0.736
Percentage of RealEstateGrossAtCarryingValue	0.1	0.1	0.1	0.2	0.2	0.3	0.0

glpi:HollywoodCasinoAuroraIL

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	102	102	102	102	102	102	102	103
Percentage of RealEstateGrossAtCarryingValue	1.2	1.2	1.2	2.3	2.3	3.7	3.8	4.2

glpi:HollywoodCasinoColumbusOH

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	226	226	226	226	226	226	226	226
Percentage of RealEstateGrossAtCarryingValue	2.6	2.7	2.7	5.0	5.0	8.2	8.3	9.3

glpi:HollywoodCasinoJolietIL

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	120	120	120	120	120	120	120	120
Percentage of RealEstateGrossAtCarryingValue	1.4	1.4	1.4	2.7	2.7	4.4	4.4	4.9

glpi:HollywoodCasinoLawrenceburgIN

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	357	357	357	357	357	357	357	357
Percentage of RealEstateGrossAtCarryingValue	4.1	4.3	4.3	7.9	8.0	13.0	13.0	14.7

glpi:HollywoodCasinoStLouisMO

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	218	218	218	221	221	221	221	221
Percentage of RealEstateGrossAtCarryingValue	2.5	2.6	2.6	4.9	4.9	8.0	8.1	9.1

glpi:HollywoodCasinoToledoOH

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	155	155	155	156	156	156	156	156
Percentage of RealEstateGrossAtCarryingValue	1.8	1.9	1.9	3.5	3.5	5.7	5.7	6.4

glpi:IsleCasinoBettendorfIA

Period End	2020-12-31
Value	114
Percentage of RealEstateGrossAtCarryingValue	1.3

glpi:IsleCasinoWaterlooIA

Period End	2020-12-31
Value	142
Percentage of RealEstateGrossAtCarryingValue	1.6

glpi:JackpotPropertiesNV

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	110	110	110	45	45
Percentage of RealEstateGrossAtCarryingValue	1.3	1.3	1.3	1.0	1.0

glpi:LAubergeBatonRougeLA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	383	383	383	199	199
Percentage of RealEstateGrossAtCarryingValue	4.4	4.6	4.6	4.4	4.4

glpi:LumierePlaceMO

Period End	2020-12-31
Value	246
Percentage of RealEstateGrossAtCarryingValue	2.8

glpi:MResortNV

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	192	192	192	192	192	192	192	192
Percentage of RealEstateGrossAtCarryingValue	2.2	2.3	2.3	4.3	4.3	7.0	7.0	7.9

glpi:Morgantown

Period End	2020-12-31
Value	30
Percentage of RealEstateGrossAtCarryingValue	0.3

glpi:TheMeadowsRacetrackandCasinoPA

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	323	323	323	323	322
Percentage of RealEstateGrossAtCarryingValue	3.7	3.9	3.9	7.2	7.2

us-gaap:RealEstateInvestmentPropertyAccumulatedDepreciation

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31
Value	1524	1467	1410	1364	1309	1255	1200	1146	1091	1038	983	931	907	882	857	832	806	781	756	731	708	684	660	637	613	589	565	541	530	507	484
Percentage of RealEstateInvestmentPropertyAccumulatedDepreciation	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:RealEstateInvestmentPropertyAtCost

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31
Value	9344	8698	8698	8605	8359	8301	8301	8301	8301	8314	8314	4516	4519	4519	4519	4519	4519	4495	4495	4500	4173	2750	2750	2750	2748	2746	2745	2743	2708	2661	2494
Percentage of RealEstateInvestmentPropertyAtCost	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:RealEstateInvestmentPropertyAtCost us-gaap:PropertyPlantAndEquipmentByType

us-gaap:BuildingAndBuildingImprovements

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31
Value	6226	6030	6030	6014	5795	5749	5749	5749	5749	5762	5762	2461	2461	2461	2461	2461	2461	2438	2438	2438	2297	2297	2297	2288	2288	2288	2288	2287	2120	2120	2050
Percentage of RealEstateInvestmentPropertyAtCost	66.6	69.3	69.3	69.9	69.3	69.3	69.3	69.3	69.3	69.3	69.3	54.5	54.5	54.5	54.5	54.5	54.5	54.2	54.2	54.2	55.0	83.5	83.5	83.2	83.3	83.3	83.4	83.4	78.3	79.7	82.2

us-gaap:LandAndLandImprovements

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31
Value	3117	2667	2667	2590	2563	2552	2552	2552	2552	2552	2552	2054	2057	2057	2057	2057	2057	2057	2057	2062	1876	453	453	454	454	454	454	454	453	453	382
Percentage of RealEstateInvestmentPropertyAtCost	33.4	30.7	30.7	30.1	30.7	30.7	30.7	30.7	30.7	30.7	30.7	45.5	45.5	45.5	45.5	45.5	45.5	45.8	45.8	45.8	45.0	16.5	16.5	16.5	16.5	16.5	16.5	16.6	16.7	17.0	15.3

us-gaap:RealEstateInvestmentPropertyAtCost us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

glpi:EvansvilleExchangeTransaction

Period End	2020-12-31
Value	72
Percentage of RealEstateInvestmentPropertyAtCost	0.8

us-gaap:RealEstateInvestmentPropertyAtCost us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:PropertyPlantAndEquipmentByType

glpi:EvansvilleExchangeTransaction, us-gaap:BuildingAndBuildingImprovements

Period End	2020-12-31
Value	26
Percentage of RealEstateInvestmentPropertyAtCost	0.3

glpi:EvansvilleExchangeTransaction, us-gaap:LandAndLandImprovements

Period End	2020-12-31
Value	46
Percentage of RealEstateInvestmentPropertyAtCost	0.5

glpi:Morgantown, us-gaap:LandAndLandImprovements

Period End	2020-12-31
Value	30
Percentage of RealEstateInvestmentPropertyAtCost	0.3

us-gaap:RealEstateInvestmentPropertyNet

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31
Value	7820	7230	7287	7240	7049	7046	7100	7154	7210	7275	7331	3584	3612	3636	3662	3687	3712	3714	3739	3768	3465	2066	2090	2113	2135	2157	2180	2201	2178	2153	2010
Percentage of RealEstateInvestmentPropertyNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:PerformanceShares

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	20.72	18.77	18.6	17.49	17.25	20.1	22.93	0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0

us-gaap:RestrictedStock

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31
Value	38.72	34.1	33.53	29.69	30.59	32.76	34.31	28.34
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	186.9	181.7	180.3	169.8	177.3	163.0	149.6	0.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber

us-gaap:PerformanceShares

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2017-09-30	2017-06-30	2017-03-31	2016-12-31	2016-09-30	2016-06-30	2016-03-31	2015-12-31	2015-09-30	2015-06-30	2015-03-31	2014-12-31	2013-12-31
Value	1.305106	1.305106	1.193994	1.193994	1.423994	1.423994	1.383334	1.383334	1.383334	1.383334	1.342	1.342	1.342	1.672	1.664	1.664	1.664	1.664	1.106	1.649556	1.649556	1.649556	1.091556	1.091556	1.091556	1.091556	0.543556	0.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0

Line plots across dimensions of each concept

EBT Margin
us-gaap:StatementBusinessSegments
(None,)

Operating Margin
us-gaap:StatementBusinessSegments
(None,)

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:AwardType
(None,)

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:StatementBusinessSegments
(None,)

us-gaap:IncomeTaxExpenseBenefit
us-gaap:StatementBusinessSegments
(None,)

us-gaap:InterestExpense
us-gaap:StatementBusinessSegments
(None,)

us-gaap:NetIncomeLoss
us-gaap:StatementBusinessSegments
(None,)

us-gaap:OperatingIncomeLoss
us-gaap:StatementBusinessSegments
(None,)

us-gaap:Revenues
us-gaap:StatementBusinessSegments
(None,)

us-gaap:Revenues
us-gaap:ProductOrService
(None,)

us-gaap:Assets
us-gaap:StatementBusinessSegments
(None,)

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:FairValueByAssetClass
(None,)

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)

us-gaap:NetIncomeLoss
us-gaap:StatementBusinessSegments
(None,)

us-gaap:Dividends
us-gaap:StatementEquityComponents
(None,)

GLPI

Table of contents

Plots across concepts

Tables

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:PerformanceShares

us-gaap:RestrictedStock

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService

us-gaap:CostOfGoodsAndServicesSold

glpi:Gamingfoodbeverageandother

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument

glpi:SeniorUnsecuredNotes400PercentDue2031

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:StatementBusinessSegments

glpi:GLPCapitalLP

glpi:TRSProperties

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit us-gaap:StatementBusinessSegments

glpi:GLPCapitalLP

glpi:TRSProperties

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense

us-gaap:InterestExpense us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination

us-gaap:InterestExpense us-gaap:StatementBusinessSegments

glpi:GLPCapitalLP

glpi:TRSProperties

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments

glpi:GLPCapitalLP

glpi:TRSProperties

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses

Operating Income Loss