ECPG

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

Noncurrent Liabilities

Stockholders Equity

CashFlow

NetCashProvidedByUsedInOperatingActivities

NetCashProvidedByUsedInInvestingActivities

NetCashProvidedByUsedInFinancingActivities

NonoperatingIncomeExpense

LesseeOperatingLeaseLiabilityPaymentsDue

FiniteLivedIntangibleAssets

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
us-gaap:CommonStockValue	▇███████████▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▁▁▃▂▂▂▂▂	0.304	0.31	0.313	0.313	0.313	0.312	0.311	0.311	0.31	0.31	0.309	0.309	0.259	0.259	0.258	0.257	0.257	0.257	0.256	0.255	0.255	0.255	0.253	0.253	0.252	0.26	0.258	0.257	0.256	0.257	0.255	0.254	0.253	0.233	0.232	0.25	0.248	0.247	0.245	0.245	0.244	NA	0.24	NA	NA
us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStock	▇█████████▇▇▁▁▁	30.413	31.01	31.345	31.345	31.288	31.234	31.097	31.059	30.98	30.967	30.884	30.853	25.931	25.912	25.801	NA	NA	NA	25.593	NA	NA	NA	25.288	NA	NA	NA	25.794	NA	NA	NA	25.457	NA	NA	23.336	23.191	25.002	24.797	24.696	24.52	24.472	24.448	NA	24.011	NA	NA
us-gaap:CommonStockSharesIssued	▇███████████▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▁▁▃▂▂▂▂▂	30.413	31.01	31.345	31.345	31.288	31.234	31.097	31.059	30.98	30.967	30.884	30.852	25.931	25.912	25.801	25.745	25.741	25.728	25.593	25.532	25.527	25.508	25.288	25.274	25.237	26.012	25.794	25.72	25.631	25.749	25.457	25.412	25.252	23.336	23.191	25.002	24.797	24.696	24.52	24.472	24.448	NA	24.011	NA	NA
us-gaap:CommonStockSharesOutstanding	▇███████████▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▁▁▃▂▂▂▂▂	30.413	31.01	31.345	31.345	31.288	31.234	31.097	31.059	30.98	30.967	30.884	30.852	25.931	25.912	25.801	25.745	25.741	25.728	25.593	25.532	25.527	25.508	25.288	25.274	25.237	26.012	25.794	25.72	25.631	25.749	25.457	25.412	25.252	23.336	23.191	25.002	24.797	24.696	24.52	24.472	24.448	NA	24.011	NA	NA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding	▁█	31.415	31.832	NA	31.826	31.56	31.308	NA	31.657	31.426	31.359	NA	30.121	26.409	26.416	NA	26.736	26.391	26.087	NA	25.777	25.874	25.868	NA	25.45	26.919	27.315	NA	27.332	27.492	28.196	NA	27.183	24.855	24.414	NA	26.047	25.825	25.74	NA	25.604	25.61	25.451	NA	25.154	24.958
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic	▁█	30.909	31.469	NA	31.484	31.413	31.308	NA	31.338	31.225	31.201	NA	29.867	26.15	26.056	NA	26.011	25.983	25.876	NA	25.777	25.742	25.55	NA	25.45	25.885	26.072	NA	25.879	25.798	25.749	NA	25.535	23.966	23.446	NA	25.071	24.919	24.779	NA	24.638	24.433	24.26	NA	23.947	23.713
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	▁█	0.0	0.013	NA	0.013	0.164	0.013	NA	0.013	0.013	0.217	NA	0.013	0.013	0.013	NA	0.013	0.317	0.084	NA	0.004	NA	NA	NA	NA	0.0	0.0	NA	0.0	0.0	0.0	NA	0.0	0.0	0.0	NA	0.21	0.3919	0.209	NA	0.209	0.209	NA	NA	NA	NA
us-gaap:EarningsPerShareBasic	▆▆▃▄█▁▄▄▃▄▄▃▃▃▂▃▃▃▃▂▃▃▂▁▃▃▃▃▃▃▃▃▂▃▃▃▃▂▃▃▃▃▃▂▂	3.12	3.01	1.1800000000000006	1.74	4.15	-0.33	1.38	1.24	1.17	1.58	1.51	0.69	1.01	0.84	0.49	1.08	0.78	0.85	0.88	-0.06	1.15	1.01	-0.04	-0.43	1.07	1.13	1.03	1.17	0.91	0.9	0.9	0.86	0.46	0.83	0.82	0.85	0.67	0.46	0.69	0.62	0.6	0.56	0.5799999999999998	0.51	0.49
us-gaap:EarningsPerShareDiluted	▆▆▃▄█▁▄▄▃▄▄▃▃▃▂▃▃▃▃▂▃▃▂▁▃▃▃▃▃▃▃▃▂▃▃▃▃▂▃▃▃▂▃▂▂	3.07	2.97	1.17	1.72	4.13	-0.33	1.36	1.23	1.17	1.57	1.5	0.69	1.0	0.83	0.48	1.05	0.77	0.85	0.88	-0.06	1.14	0.99	-0.04	-0.43	1.03	1.08	0.98	1.11	0.86	0.82	0.82	0.81	0.44	0.8	0.79	0.82	0.64	0.44	0.67	0.6	0.58	0.54	0.56	0.49	0.47

		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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30

		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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30

		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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
us-gaap:ComprehensiveIncomeNetOfTax	▇▇▇▆█▁▇▄▄▅▅▄▃▅▄▅▅▅▄▃▄▄▃▃▅▄▄▄▄▄▅▄▄▄▄▄▄▄▄▄▄▄	102.004	98.902	89.605	85.742	131.497	-75.043	100.477	10.138	25.098	54.377	39.443	14.231	-9.139	37.72	9.478	37.151	30.918	33.236	22.028	-12.193	4.152	15.494	-29.337	-23.134	34.989	8.871	25.021	24.044	26.948	25.065	28.834	23.133	8.855	19.954	19.628	23.149	14.806	12.088	16.29	14.124	14.238	14.186	NA	NA	NA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	▆▆▆▆▆▆▆▆▆▇▆▅▆▇▅█▆▆▃▁▇▆▇▆▆▆▆▆▆▆▆▇▆▆	0.283	0.136	-0.112	0.472	0.451	-0.128	0.156	0.595	0.168	0.615	-6.67	-9.002	0.305	3.669	-10.056	14.544	-3.02	-3.869	-32.469	-50.537	2.505	0.575	2.39	-0.713	-1.542	-1.04	-1.26	-1.569	-1.59	-4.498	-1.972	1.811	0.0	0.0	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	▇▇▇▆█▁▇▄▄▅▅▄▃▅▄▅▄▅▃▁▄▄▃▃▅▄▄▄▄▄▄▄▄▄▄▄	102.287	99.038	89.493	86.214	131.948	-75.171	100.633	10.733	25.266	54.992	32.773	5.229	-8.834	41.389	-0.578	51.695	27.898	29.367	-10.441	-62.73	6.657	16.069	-26.947	-23.847	33.447	7.831	23.761	22.475	25.358	20.567	26.862	24.944	8.855	19.954	19.628	23.149	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:GainsLossesOnExtinguishmentOfDebt	▄	-9.3	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	NA	NA	NA	NA	NA	NA
us-gaap:GeneralAndAdministrativeExpense	▃▃▃▅▃▃▄▄▃▄▃▄▄▄▅▃▄▃▃▃▃▃▄█▄▃▃▃▄▄▃▃▃▂▂▂▂▂▁▁▁▁▁▁▁	34.823	32.148	35.159	53.459	28.618	31.877	37.921	38.168	32.62	39.547	35.189	41.893	41.986	39.284	55.33	32.5	36.932	33.318	31.002	34.871	32.934	35.239	37.047	88.002	39.166	32.612	35.778	35.532	38.282	36.694	32.284	33.486	27.601	16.342	15.467	14.091	18.582	14.132	10.766	11.172	9.623	10.169	10.158	6.982	7.425
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	▇▇▄▅█▃▅▄▄▅▅▄▄▄▃▅▄▄▄▁▄▄▃▃▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄	121.394	121.733	47.711	74.854	166.354	-6.021	57.118	42.434	48.575	53.115	55.128	29.895	38.282	33.183	11.386	59.988	32.607	27.245	38.868	-65.714	44.284	39.937	-11.767	-14.251	41.149	45.85	46.388	40.292	35.363	30.572	38.926	31.644	18.279	32.019	33.528	35.195	31.834	18.75	27.485	25.238	24.261	22.28	23.246	18.922	18.479
us-gaap:IncomeTaxExpenseBenefit	▆▇▄▆█▄▅▃▅▃▄▅▅▄▄▅▅▅▇▁▅▄▁▂▅▅▅▄▅▅▅▄▄▅▅▅▅▄▄▄▄▄▄▄▄	24.607	26.968	10.499	19.747	35.57	4.558	13.886	3.021	11.753	3.673	9.095	16.9	11.3	9.47	8.607	17.844	13.531	12.067	28.374	-13.768	13.451	10.148	-13.363	-4.887	15.964	15.883	16.819	10.154	14.01	11.742	15.278	10.272	7.267	12.571	13.361	13.887	12.846	7.344	10.351	9.868	9.486	8.601	9.075	6.632	6.749
us-gaap:IncomeTaxesPaidNet	▃▁▁█▂▁▂▂▂▂▄	23.46	0.813	1.662	70.862	15.526	0.766	12.554	7.307	9.109	15.003	32.971	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	11.795	13.796	NA	NA	15.496	16.647	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:InterestExpense	▆▆▅█▆▇▆▇█▇▇█▇▇▆▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅▄▄▂▂▃▁▁▂▁▁▁▂▁▁▁	44.159	46.526	36.405	67.962	50.327	54.662	53.515	54.365	63.913	54.967	56.956	65.094	60.536	57.462	51.692	52.755	50.516	49.198	48.447	48.632	50.597	50.691	50.187	47.816	46.25	42.303	42.264	43.498	43.218	37.962	29.747	29.186	7.482	6.854	23.439	1.475	0.65	5.515	4.979	5.175	5.369	5.593	5.003	4.928	4.88
us-gaap:InterestExpenseDebt us-gaap:LongtermDebtType ecpg:ConvertibleNotesAndExchangeableNotes	▁▂▅▅▇▇▇█	3.972	4.923	7.553	7.512	8.894	8.843	9.193	10.159	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:InterestPaidNet	▃▄▁█▂█▅▄▂█▃	31.894	37.258	21.494	59.696	27.868	60.495	47.075	39.82	29.918	62.135	34.955	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:NetIncomeLoss	▆▆▃▄█▁▄▃▃▄▄▃▃▃▂▃▃▃▃▁▃▃▁▁▃▃▃▃▃▃▃▃▂▃▃▃▂▂▂▂▂▂▂▂▂	96.503	94.63	37.32	54.65	130.332	-10.454	43.085	38.869	36.661	49.254	47.036	20.725	26.298	21.827	12.681	28.194	20.255	22.098	22.812	-1.524	29.588	25.694	-0.988	-10.959	27.657	29.425	26.65	30.335	23.561	23.18	22.953	21.886	11.012	19.448	20.167	21.308	16.596	11.406	17.134	15.37	14.775	13.679	14.171	12.29	11.73
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest	▇▆▆▇▇▆▆▇▇▇▆▆▇▇▅█▆▆▅▁▇▇▇▇▆▇▇▆▆▆▆▆▆▆	0.284	0.135	-0.108	0.457	0.452	-0.125	0.147	0.544	0.161	0.188	-1.003	-7.709	0.676	1.886	-9.902	13.95	-1.179	-7.119	-11.489	-50.422	1.245	0.913	2.584	1.595	-2.472	0.542	1.307	-0.197	-2.208	-4.35	-0.737	-0.822	0.0	0.0	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:NonoperatingIncomeExpense	▃▄▁▂▃▃▃▂▂▃▃▂▂▃▃▄▄▄▄▄▄▄▄▄▄▅▄▄▄▅▆▆▇████████████	-52.893	-46.581	-76.502	-67.601	-53.338	-53.223	-56.092	-65.911	-65.157	-57.943	-60.759	-67.633	-65.151	-55.269	-52.849	-43.882	-47.987	-48.596	-48.577	-44.532	-47.463	-43.567	-49.54	-48.74	-45.855	-40.186	-41.959	-44.03	-43.143	-37.697	-29.707	-29.485	-11.604	-6.394	-6.212	-5.976	-6.42	-5.248	-5.166	-5.521	-5.346	-5.477	-4.937	-4.78	-4.97
us-gaap:OperatingExpenses	████▆▇▇▇▇▇▇▇▇▇█▆▆▆▅▆▆▆██▆▆▅▅▅▅▅▅▃▂▂▂▂▂▁▂▂▁▁▁▁	253.448	248.523	258.397	261.221	206.341	241.879	234.584	247.591	233.142	236.019	232.834	239.246	246.314	238.336	253.246	202.829	210.323	196.1	183.939	200.597	197.695	205.513	259.984	253.307	203.352	199.627	188.224	188.96	190.689	185.472	168.466	174.429	126.238	105.872	103.872	103.621	102.809	106.224	83.639	89.804	86.223	82.546	71.589	74.265	72.782
us-gaap:OperatingIncomeLoss	▇▇▅▆█▃▅▅▅▅▅▄▅▄▃▅▄▄▄▁▄▄▃▃▄▄▄▄▄▄▄▃▂▃▃▃▃▂▃▃▂▂▂▂▂	174.287	168.314	124.213	142.455	219.692	47.202	113.21	108.345	113.732	111.058	115.887	97.528	103.433	88.452	64.235	103.87	80.594	75.841	87.445	-21.182	91.747	83.504	37.773	34.489	87.004	86.036	88.347	84.322	78.506	68.269	68.633	61.129	29.883	38.413	39.74	41.171	38.254	23.998	32.651	30.759	29.607	27.757	28.183	23.702	23.449
us-gaap:OtherComprehensiveIncomeLossNetOfTax	▅▅█▆▅▁█▃▄▅▄▄▃▆	5.5	4.273	52.281	31.107	-1.468	-64.592	57.401	-28.68	-11.556	5.55	-10.769	-6.68	-34.988	16.063	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:OtherIncome	▂▂▂▂▂▂█▁▁▁	1.343	1.766	0.884	0.949	0.789	1.697	9.301	0.144	0.0	0.529	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:OtherNonoperatingIncomeExpense	▅▅▅▅▄▅▄▁▅▄▄▄▃▆▅█▆▅▅▆▆▇▅▅▅▆▅▅▅▅▅▅▄▅▅▅▅▅▅▅▅▅▅▅▅	0.566	-0.055	0.854	0.361	-3.011	1.439	-2.577	-11.546	-1.244	-2.976	-3.803	-2.539	-4.615	2.193	-1.157	8.873	2.529	0.602	-0.13	4.1	3.134	7.124	0.647	-0.924	0.395	2.117	0.305	-0.532	0.075	0.265	0.04	-0.299	-4.122	0.46	0.328	1.036	0.077	0.267	-0.187	-0.346	0.023	0.116	0.066	0.148	-0.09
us-gaap:ProfitLoss	▇▇▄▅█▃▅▄▄▅▅▃▄▄▃▅▄▄▃▁▄▄▃▃▄▄▄▄▄▄▄▄▃▄▄▄	96.787	94.765	37.212	55.107	130.784	-10.579	43.232	39.413	36.822	49.442	46.033	13.016	26.974	23.713	2.779	42.144	19.076	14.979	11.323	-51.946	30.833	26.607	1.596	-9.364	25.185	29.967	27.957	30.138	21.353	18.83	22.216	21.064	11.012	19.448	20.167	21.308	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax	▁▁▁▁▁▁█▁▁▁█▁▁▁▇▁▁▁▆▄▇▇▇▇▇▇▆▆▆▆▆▆▄▄▄▄▄▃▃▃▃▃▃▃▃	32.064	32.516	32.701	29.787	23.95	28.68	347.794	31.204	32.316	34.552	348.721	37.388	39.453	35.968	317.481	23.111	18.681	19.971	271.384	179.415	289.442	289.017	297.757	287.796	290.356	285.663	276.571	273.282	269.195	253.741	237.099	235.558	156.121	144.285	143.612	144.792	141.063	130.222	116.452	120.563	115.83	110.303	99.772	97.967	96.231
us-gaap:Revenues	██▇▇█▅▆▆▆▆▆▆▆▆▆▅▅▅▅▃▅▅▅▅▅▅▅▅▅▄▄▄▂▂▂▂▂▂▁▂▁▁▁▁▁	427.735	416.837	382.61	403.676	426.033	289.081	347.794	347.421	344.811	345.71	348.721	332.745	332.115	316.977	317.481	306.699	290.917	271.941	271.384	179.415	289.442	289.017	297.757	287.796	290.356	285.663	276.571	273.282	269.195	253.741	237.099	235.558	156.121	144.285	143.612	144.792	141.063	130.222	116.452	120.563	115.83	110.303	99.772	97.967	96.231

		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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30

		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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
us-gaap:Assets	████████████▇█▇▇▆▆▆▆▆▆▇▇▇▆▆▆▆▆▄▄▃▂▂▂▂▁▁▁▁	4679.752	4770.169	4864.523	4732.053	4740.854	4614.954	4909.95	4708.055	4811.025	4813.607	4631.875	4647.404	4606.207	4642.26	4490.712	4173.786	3918.797	3764.662	3670.497	3705.483	3770.445	3823.619	4219.852	4103.01	4113.978	3648.187	3750.135	3722.086	3592.797	3434.696	2685.274	2591.003	1805.447	1132.479	1171.34	1109.085	1167.945	837.972	812.483	747.44	762.98	NA	736.468	NA	NA
us-gaap:Liabilities	▇▇▇▇███████████▇▇▆▆▆▆▆▇▇▇▆▆▆▆▆▄▄▃▂▂▂▂▁▁▁▁	3325.402	3491.385	3644.447	3604.797	3698.467	3709.143	3884.544	3784.058	3908.068	3939.05	3812.187	3868.959	3854.533	3885.236	3766.801	3450.631	3250.687	3125.189	3069.982	3093.403	3096.732	3159.612	3571.364	3443.33	3432.685	2974.227	3085.196	3081.919	2979.033	2836.405	2082.803	2030.732	1295.077	705.548	765.524	677.903	764.304	453.115	440.948	393.519	425.706	NA	433.771	NA	NA
us-gaap:LiabilitiesAndStockholdersEquity	████████████▇█▇▇▆▆▆▆▆▆▇▇▇▆▆▆▆▆▄▄▃▂▂▂▂▁▁▁▁	4679.752	4770.169	4864.523	4732.053	4740.854	4614.954	4909.95	4708.055	4811.025	4813.607	4631.875	4647.404	4606.207	4642.26	4490.712	4173.786	3918.797	3764.662	3670.497	3705.483	3770.445	3823.619	4219.852	4103.01	4113.978	3648.187	3750.135	3722.086	3592.797	3434.696	2685.274	2591.003	1805.447	1132.479	1171.34	1109.085	1167.945	837.972	812.483	747.44	762.98	NA	736.468	NA	NA
us-gaap:StockholdersEquity	█▇▇▆▆▅▆▅▅▅▄▄▃▃▃▃▂▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▁▂▁▁▁▁▁	1354.35	1276.18	1217.608	1124.676	1038.851	902.726	1022.193	920.94	900.495	872.263	818.009	778.053	624.607	610.832	581.862	571.309	553.513	600.973	559.304	577.703	619.449	610.306	596.453	621.905	642.18	633.116	623.0	596.726	568.598	557.287	571.897	543.933	510.37	426.931	405.816	431.182	403.641	384.857	371.535	353.921	337.274	NA	302.697	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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
us-gaap:CashAndCashEquivalentsAtCarryingValue	▆▅▅▅█▅▆▅▅▅▅▆▅▆▆▅▄▅▄▅▄▄▅▅▄▄▄▄▄▆▄▄▆▂▁▁▁▁▁▁▁▁▁▁▁	198.516	184.598	189.184	169.983	293.8	188.199	192.335	186.677	168.565	167.096	157.418	204.649	181.657	217.138	212.139	188.246	146.647	159.931	149.765	157.672	139.009	144.613	153.593	175.22	138.158	136.209	124.163	115.44	123.407	196.389	126.213	110.156	222.171	29.904	17.51	19.263	15.014	15.446	8.047	10.672	14.66	22.375	10.905	11.531	10.402
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	▃▂▃▂█▃▃▃▂▁▁	198.516	184.598	189.184	169.983	293.8	188.199	192.335	186.677	168.565	167.096	157.418	NA	NA	217.138	212.139	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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
us-gaap:PropertyPlantAndEquipmentGross		NA	NA	257.002	NA	NA	NA	222.26	NA	NA	NA	230.584	NA	NA	NA	205.852	NA	NA	NA	181.32	NA	NA	NA	174.962	NA	NA	NA	144.291	NA	NA	NA	115.54	NA	NA	NA	53.519	NA	NA	NA	43.904	NA	NA	NA	NA	NA	NA
us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType ecpg:ComputerEquipmentAndSoftware		NA	NA	194.678	NA	NA	NA	136.426	NA	NA	NA	172.679	NA	NA	NA	161.019	NA	NA	NA	138.232	NA	NA	NA	127.454	NA	NA	NA	101.721	NA	NA	NA	79.765	NA	NA	NA	33.189	NA	NA	NA	27.328	NA	NA	NA	NA	NA	NA
us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType ecpg:FurnitureFixturesAndEquipment		NA	NA	10.514	NA	NA	NA	10.428	NA	NA	NA	19.226	NA	NA	NA	17.712	NA	NA	NA	19.23	NA	NA	NA	22.074	NA	NA	NA	18.472	NA	NA	NA	15.955	NA	NA	NA	7.605	NA	NA	NA	6.211	NA	NA	NA	NA	NA	NA
us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType ecpg:TelecommunicationsEquipmentAndOther		NA	NA	3.45	NA	NA	NA	3.893	NA	NA	NA	1.866	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:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgress		NA	NA	4.739	NA	NA	NA	2.089	NA	NA	NA	25.839	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:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovements		NA	NA	43.621	NA	NA	NA	37.245	NA	NA	NA	34.817	NA	NA	NA	21.479	NA	NA	NA	17.493	NA	NA	NA	19.711	NA	NA	NA	17.964	NA	NA	NA	15.145	NA	NA	NA	6.692	NA	NA	NA	6.044	NA	NA	NA	NA	NA	NA
us-gaap:PropertyPlantAndEquipmentNet	████▇██▇▇▇▇▆▆▅▅▅▅▅▅▄▄▄▅▄▄▄▄▄▄▄▄▃▂▂▂▁▁▁▁▁▁	120.09	124.586	127.297	120.125	117.873	119.417	120.051	116.633	118.001	117.371	115.518	96.429	89.071	81.008	76.276	71.213	71.135	71.805	72.257	66.703	67.428	68.162	73.504	63.042	66.413	64.601	66.969	64.565	58.839	55.879	55.783	50.05	36.788	24.389	23.223	19.771	20.161	19.603	17.796	16.412	14.83	NA	13.658	NA	NA
us-gaap:Goodwill	███▇▇▇▇▇▇▇▇▇███▇▇▇▇▇▇▇███▇▇█▇▇▅▅▂▁▁▁▁▁▁▁▁	915.067	912.17	906.962	866.657	838.024	839.301	884.185	831.549	865.527	882.884	868.126	898.591	909.063	957.12	928.993	853.162	831.556	796.408	785.032	819.785	840.544	890.504	924.847	940.181	969.928	865.701	897.933	921.519	879.91	844.567	504.213	489.52	119.788	51.437	55.446	55.446	55.318	6.047	15.985	15.985	15.985	NA	15.985	NA	NA
us-gaap:IntangibleAssetsNetExcludingGoodwill	▄▅▅▅▅▅▅▅▆▆▆▇▇██▃▃▃▃▃▄▄▂▂▃▂▂▂▂▂▃▁	41.193	42.991	45.012	44.617	44.636	46.371	51.371	49.717	56.441	59.383	60.581	64.067	67.186	75.62	75.736	29.267	29.702	27.49	28.243	31.113	33.125	35.691	18.129	19.511	24.33	18.77	21.564	17.034	18.224	22.579	23.549	8.519	NA	0.462	0.487	0.515	0.55	NA	0.462	0.534	0.605	NA	0.748	NA	NA
us-gaap:FiniteLivedIntangibleAssetsNet	▃▃▄▃▃▄▄▄▅▆▆▆▇██▁▁▁▁	41.193	42.991	45.012	44.617	44.636	46.371	51.371	49.717	56.441	59.383	60.581	64.067	67.186	75.62	75.736	29.267	29.702	27.49	28.243	NA	NA	NA	16.167	NA	NA	NA	19.602	NA	NA	NA	21.587	10.481	3.834	NA	0.487	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:OperatingLeaseRightOfUseAsset	▁▁▂▂▁▂▃▃█▇	69.151	69.426	72.164	72.587	70.597	74.113	75.254	75.852	95.954	91.045	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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30

		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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
us-gaap:LongTermDebt us-gaap:CreditFacility,us-gaap:LongtermDebtType ecpg:CabotSecuritisationSeniorFacility,us-gaap:LineOfCredit	██▇▁	484.078	482.377	478.131	452.299	NA	NA	464.092	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:LongTermDebt us-gaap:CreditFacility,us-gaap:LongtermDebtType ecpg:GlobalSeniorSecuredRevolvingCreditFacility,us-gaap:LineOfCredit	▁▆▅█	330.318	520.505	481.007	585.227	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	NA	NA	NA
us-gaap:LongTermDebt us-gaap:CreditFacility,us-gaap:LongtermDebtType ecpg:GlobalSeniorSecuredRevolvingCreditFacility,us-gaap:RevolvingCreditFacility	▁▆▅█	330.3	520.5	481.0	585.2	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	NA	NA	NA
us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType ecpg:ConvertibleNotesAndExchangeableNotes,ecpg:ConvertibleAndExchangeableNotesPayable	▁▁██	422.5	422.5	583.5	583.5	NA	NA	672.855	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:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType ecpg:EncorePrivatePlacementNotes,us-gaap:NotesPayableOtherPayables	▁▃▆█	127.06	136.78	146.55	156.32	NA	NA	308.75	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	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType ecpg:SeniorSecuredNotes,us-gaap:SeniorNotes	█▅▇▁	1667.865	1622.407	1651.619	1542.205	NA	NA	1129.039	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:LongTermDebt us-gaap:LongtermDebtType us-gaap:OtherDebtSecurities	▁▃▂█	22.992	24.921	24.398	30.574	NA	NA	54.151	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:DebtAndCapitalLeaseObligations	▇▇▇▇▇██████████▇▇▆▆▆▆▆▇▇▇▆▆▆▆▆▄▄▃▂▂▂▂▁▁▁▁	2999.296	3151.928	3281.634	3252.101	3353.73	3404.427	3513.197	3429.343	3529.717	3592.906	3490.633	3561.467	3530.415	3607.101	3446.876	3148.497	2963.929	2870.607	2805.983	2848.443	2849.066	2893.434	3216.572	3116.444	3134.187	2690.882	2773.554	2790.746	2715.866	2612.133	1850.431	1806.68	1107.659	646.011	706.036	615.131	702.316	398.246	388.95	344.196	378.172	NA	385.264	NA	NA
us-gaap:LongTermDebtAndCapitalLeaseObligations		NA	NA	3373.493	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	NA	NA	NA	NA
us-gaap:MinorityInterest		NA	2.604	2.468	2.58	3.536	3.085	3.213	3.057	2.462	2.294	1.679	-0.839	-9.121	-9.057	-9.929	-8.894	-11.81	-9.154	-7.539	-3.176	8.94	8.394	7.285	3.96	3.564	4.054	3.981	3.374	2.948	3.394	4.01	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo		NA	NA	15.872	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	NA	NA	NA	NA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree		NA	NA	14.311	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	NA	NA	NA	NA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour		NA	NA	14.474	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	NA	NA	NA	NA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive		NA	NA	11.612	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	NA	NA	NA	NA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive		NA	NA	37.776	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	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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
us-gaap:StockholdersEquity	█▇▇▆▆▅▆▅▅▅▄▄▃▃▃▃▂▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▁▂▁▁▁▁▁	1354.35	1276.18	1217.608	1124.676	1038.851	902.726	1022.193	920.94	900.495	872.263	818.009	778.053	624.607	610.832	581.862	571.309	553.513	600.973	559.304	577.703	619.449	610.306	596.453	621.905	642.18	633.116	623.0	596.726	568.598	557.287	571.897	543.933	510.37	426.931	405.816	431.182	403.641	384.857	371.535	353.921	337.274	NA	302.697	NA	NA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	█▇▇▆▅▄▅▄▄▄▃▃▂▂▁▁▁▁▁▁▂▂▂▂▂▂▂▂▁▁▁▁	1354.35	1278.784	1220.076	1127.256	1042.387	905.811	1025.406	923.997	902.957	874.557	819.688	777.214	615.486	601.775	571.933	562.415	541.703	591.819	551.765	574.527	628.389	618.7	603.738	625.865	645.744	637.17	626.981	600.1	571.546	560.681	575.907	548.04	NA	NA	405.816	NA	NA	NA	371.535	NA	NA	NA	NA	NA	NA
us-gaap:CommonStockValue	▇███████████▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▁▁▃▂▂▂▂▂	0.304	0.31	0.313	0.313	0.313	0.312	0.311	0.311	0.31	0.31	0.309	0.309	0.259	0.259	0.258	0.257	0.257	0.257	0.256	0.255	0.255	0.255	0.253	0.253	0.252	0.26	0.258	0.257	0.256	0.257	0.255	0.254	0.253	0.233	0.232	0.25	0.248	0.247	0.245	0.245	0.244	NA	0.24	NA	NA
us-gaap:AdditionalPaidInCapital	▅▆██████▇▇▇▇▂▁▁▁▁▄▃▃▄▃▄▃▃▄▄▄▄▄▆▆▆▃▃▄▄▄▄▄▄	143.827	167.655	230.44	227.113	227.03	222.403	222.59	221.814	211.508	208.374	208.498	207.985	68.82	45.906	42.646	43.006	43.076	113.532	103.392	83.521	112.959	109.228	110.533	106.454	101.288	128.135	125.31	121.491	116.037	132.29	171.819	171.548	163.753	89.189	88.029	133.005	128.615	124.638	123.406	122.082	119.56	NA	113.412	NA	NA
us-gaap:RetainedEarningsAccumulatedDeficit	█▇▇▆▆▅▅▅▅▅▄▄▄▄▄▄▄▃▃▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁	1269.259	1172.756	1055.668	1018.348	963.698	833.366	888.058	844.973	806.104	769.443	720.189	673.153	652.428	626.13	616.314	602.199	593.29	580.957	560.567	597.247	598.771	569.183	543.489	544.477	555.436	527.779	498.354	471.704	441.369	417.808	394.628	371.676	349.789	338.777	319.329	299.162	277.854	261.258	249.852	232.718	217.348	NA	188.894	NA	NA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax	▅▅▅▂▁▁▄▁▃▃▃▃▃▅▄▄▄▄▃▃▄▅▅▆▇▇▇█████▇▇▇▇▇▇▇▇█	-59.04	-64.541	-68.813	-121.098	-152.19	-153.355	-88.766	-146.158	-117.427	-105.864	-110.987	-103.394	-96.9	-61.463	-77.356	-74.153	-83.11	-93.773	-104.911	-103.32	-92.536	-68.36	-57.822	-29.279	-14.796	-23.058	-0.922	3.274	10.936	6.932	5.195	0.455	-3.425	-1.268	-1.774	-1.235	-3.076	-1.286	-1.968	-1.124	0.122	NA	0.151	NA	NA
us-gaap:MinorityInterest		NA	2.604	2.468	2.58	3.536	3.085	3.213	3.057	2.462	2.294	1.679	-0.839	-9.121	-9.057	-9.929	-8.894	-11.81	-9.154	-7.539	-3.176	8.94	8.394	7.285	3.96	3.564	4.054	3.981	3.374	2.948	3.394	4.01	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	█▄▄▅▆▆▃▅▄▁▂▇▃▂	5.651	3.405	3.371	3.884	4.778	4.527	3.145	4.005	3.581	1.826	2.528	5.045	3.141	2.276	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	2.179	3.001	2.084	1.905	2.539	2.266	1.729	2.405	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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities	▅▄▄▃█▅▃▅▆▂▄▂▆▁▃▁▃▂▃▃▂▃▄▂▂▂	79.846	69.119	62.882	40.267	138.91	70.805	47.787	88.126	97.829	10.991	66.769	22.395	96.598	1.029	42.127	10.401	44.13	27.16	45.064	36.188	17.227	31.853	51.044	15.969	28.022	19.39	NA	NA	NA	-2.591	34.909	28.615	-12.442	23.693	32.367	21.548	17.502	27.103	26.348	26.488	6.669	25.074	22.973	17.679	NA
us-gaap:NetCashProvidedByUsedInInvestingActivities	█▇▇▆▆▅▆▅▅▅▅▅▄▅▂▅▅▅▅▅▅▆▄▆▁▆	145.43	95.267	75.251	18.588	32.242	-43.255	-4.375	-82.27	-46.174	-69.514	-71.445	-85.184	-156.399	-84.488	-244.351	-92.705	-66.084	-48.991	-77.176	-38.626	-71.783	18.796	-117.804	-23.023	-336.373	4.491	NA	NA	NA	-352.99	-2.846	-11.671	-257.374	54.651	-61.769	65.805	-320.752	-27.054	-71.592	4.499	-10.801	-10.194	-71.03	-19.472	NA
us-gaap:NetCashProvidedByUsedInFinancingActivities	▁▂▂▁▃▄▃▄▃▅▃▅▄▅▇▅▄▄▄▄▄▃▅▄█▄	-209.537	-160.11	-135.309	-180.323	-65.806	-21.762	-51.083	3.735	-43.969	71.547	-38.55	83.892	36.397	84.638	222.908	119.46	7.556	28.293	29.566	24.909	50.265	-61.487	55.99	42.06	316.068	-12.273	NA	NA	NA	420.853	-18.68	-131.473	462.083	-65.95	27.649	-83.104	302.818	7.35	42.619	-34.975	-3.583	-3.41	47.431	2.922	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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
us-gaap:DeferredIncomeTaxExpenseBenefit	▄▄▇▅▄▃▆▃▅▇▄▆▅▅█▄▅▄▄▂▄▂▁▄▅▄▁▂▅▅▂▅▄▅▄	-1.795	-3.302	26.968	2.031	-5.071	-12.03	17.327	-18.965	4.295	19.682	-1.919	10.477	3.185	5.071	34.366	-2.232	0.876	-4.04	-6.381	-21.522	-3.414	-21.588	-32.112	-1.022	5.041	-4.276	-36.215	-21.479	4.849	4.767	-27.971	3.08	-3.504	0.207	-10.396	NA	NA	0.623	-0.445	-1.31	-0.104	-0.058	0.854	-0.186	NA
us-gaap:DepreciationDepletionAndAmortization	▇▇▆▆▆▆▆▆▆▆▆▆▆▆█▅▅▅▅▅▅▆▅▅▅▅▅▄▄▄▃▃▁▁▁▁▁▁	12.046	11.512	11.344	10.609	10.542	10.285	11.293	10.0	9.741	9.995	9.996	9.873	10.923	10.436	14.158	8.522	8.672	8.625	8.74	8.032	8.235	9.861	9.276	8.235	8.084	8.35	8.07	6.933	6.829	6.117	5.02	4.523	2.158	1.846	1.647	1.533	1.297	1.363	NA	NA	NA	NA	NA	NA	NA
us-gaap:NetCashProvidedByUsedInOperatingActivities	▅▄▄▃█▅▃▅▆▂▄▂▆▁▃▁▃▂▃▃▂▃▄▂▂▂	79.846	69.119	62.882	40.267	138.91	70.805	47.787	88.126	97.829	10.991	66.769	22.395	96.598	1.029	42.127	10.401	44.13	27.16	45.064	36.188	17.227	31.853	51.044	15.969	28.022	19.39	NA	NA	NA	-2.591	34.909	28.615	-12.442	23.693	32.367	21.548	17.502	27.103	26.348	26.488	6.669	25.074	22.973	17.679	NA
us-gaap:NetIncomeLoss	▆▆▃▄█▁▄▃▃▄▄▃▃▃▂▃▃▃▃▁▃▃▁▁▃▃▃▃▃▃▃▃▂▃▃▃▂▂▂▂▂▂▂▂▂	96.503	94.63	37.32	54.65	130.332	-10.454	43.085	38.869	36.661	49.254	47.036	20.725	26.298	21.827	12.681	28.194	20.255	22.098	22.812	-1.524	29.588	25.694	-0.988	-10.959	27.657	29.425	26.65	30.335	23.561	23.18	22.953	21.886	11.012	19.448	20.167	21.308	16.596	11.406	17.134	15.37	14.775	13.679	14.171	12.29	11.73
us-gaap:ProfitLoss	▇▇▄▅█▃▅▄▄▅▅▃▄▄▃▅▄▄▃▁▄▄▃▃▄▄▄▄▄▄▄▄▃▄▄▄	96.787	94.765	37.212	55.107	130.784	-10.579	43.232	39.413	36.822	49.442	46.033	13.016	26.974	23.713	2.779	42.144	19.076	14.979	11.323	-51.946	30.833	26.607	1.596	-9.364	25.185	29.967	27.957	30.138	21.353	18.83	22.216	21.064	11.012	19.448	20.167	21.308	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:ShareBasedCompensation	▇▄▄▅▆▆▄▅▅▃▃▇▄▃▄▅▄▁▄▁▇▅▆▇██▅▅▆▆▅▅▃▄▃▃▃▃▂▃▂▂▂▂▂	5.651	3.405	3.371	3.884	4.778	4.527	3.145	4.005	3.581	1.826	2.528	5.007	3.169	2.276	3.358	3.531	2.76	0.75	3.125	0.633	5.151	3.718	4.749	5.156	6.198	5.905	3.621	4.009	4.715	4.836	3.486	3.983	2.179	3.001	2.084	1.9	2.539	2.266	1.729	2.405	1.81	1.765	1.254	1.549	1.446

		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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
us-gaap:NetCashProvidedByUsedInInvestingActivities	█▇▇▆▆▅▆▅▅▅▅▅▄▅▂▅▅▅▅▅▅▆▄▆▁▆	145.43	95.267	75.251	18.588	32.242	-43.255	-4.375	-82.27	-46.174	-69.514	-71.445	-85.184	-156.399	-84.488	-244.351	-92.705	-66.084	-48.991	-77.176	-38.626	-71.783	18.796	-117.804	-23.023	-336.373	4.491	NA	NA	NA	-352.99	-2.846	-11.671	-257.374	54.651	-61.769	65.805	-320.752	-27.054	-71.592	4.499	-10.801	-10.194	-71.03	-19.472	NA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment		NA	NA	11.942	9.63	5.49	7.538	8.89	13.232	7.253	10.227	30.039	12.781	13.435	11.22	7.608	8.534	5.903	6.081	15.12	6.454	7.842	2.252	12.893	5.112	6.371	4.271	9.64	4.655	5.965	2.978	5.245	2.843	3.02	2.315	2.6	1.07	1.04	1.555	2.106	1.997	0.831	0.63	0.999	0.076	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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
us-gaap:NetCashProvidedByUsedInFinancingActivities	▁▂▂▁▃▄▃▄▃▅▃▅▄▅▇▅▄▄▄▄▄▃▅▄█▄	-209.537	-160.11	-135.309	-180.323	-65.806	-21.762	-51.083	3.735	-43.969	71.547	-38.55	83.892	36.397	84.638	222.908	119.46	7.556	28.293	29.566	24.909	50.265	-61.487	55.99	42.06	316.068	-12.273	NA	NA	NA	420.853	-18.68	-131.473	462.083	-65.95	27.649	-83.104	302.818	7.35	42.619	-34.975	-3.583	-3.41	47.431	2.922	NA
us-gaap:PaymentsForRepurchaseOfCommonStock	█▁	27.0	20.39	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0.0	0.0	NA	NA	0.0	0.0	NA	NA	0.0	0.0	NA	NA	0.729	-0.729	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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30

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	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	304000.0	310000.0	313000.0	313000.0	313000.0	312000.0	311000.0	311000.0	310000.0	310000.0	309000.0	309000.0	259000.0	259000.0	258000.0	257000.0	257000.0	257000.0	256000.0	255000.0	255000.0	255000.0	253000.0	253000.0	252000.0	260000.0	258000.0	257000.0	256000.0	257000.0	255000.0	254000.0	253000.0	233000.0	232000.0	250000.0	248000.0	247000.0	245000.0	245000.0	244000.0	240000.0
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	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	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Shares Issued

us-gaap:SharesIssued us-gaap:StatementEquityComponents

us-gaap:SharesIssued

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	2016-12-31	2015-12-31	2014-12-31	2013-12-31	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2010-12-31	2009-12-31	2008-12-31
Value	30	31	31	31	31	31	31	31	30	30	30	30	25	25	25	25	25	25	25	23	23	25	24	24	24	24	24	24	23	23
Percentage of SharesIssued	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

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	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	30	31	31	31	31	31	31	31	30	30	30	30	25	25	25	25	25	25	25	25	25	25	25	25	25	26	25	25	25	25	25	25	25	23	23	25	24	24	24	24	24	24
Percentage of CommonStockSharesIssued	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

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	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	30	31	31	31	31	31	31	31	30	30	30	30	25	25	25	25	25	25	25	25	25	25	25	25	25	26	25	25	25	25	25	25	25	23	23	25	24	24	24	24	24	24
Percentage of CommonStockSharesOutstanding	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 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	2012-09-30	2012-06-30	2012-03-31	2011-09-30	2011-06-30	2011-03-31	2010-09-30	2010-06-30
Value	31	31	31	31	31	31	31	31	30	26	26	26	26	26	25	25	25	25	26	27	27	27	28	27	24	24	26	25	25	25	25	25	25	24
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	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	2012-09-30	2012-06-30	2012-03-31	2011-09-30	2011-06-30	2011-03-31	2010-09-30	2010-06-30
Value	30	31	31	31	31	31	31	31	29	26	26	26	25	25	25	25	25	25	25	26	25	25	25	25	23	23	25	24	24	24	24	24	23	23
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

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	2015-06-30	2015-03-31	2014-09-30	2014-06-30	2014-03-31	2013-09-30	2013-06-30	2013-03-31	2012-09-30	2012-06-30	2012-03-31	2011-09-30	2011-06-30
Value	0	13000.0	13000.0	164000.0	13000.0	13000.0	13000.0	217000.0	13000.0	13000.0	13000.0	13000.0	317000.0	84000.0	4000.0	0	0	0	0	0	0	0	0	210000.0	391900.0	209000.0	209000.0	209000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	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	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	3.12	3.01	1.18	1.74	4.15	-0.33	1.38	1.24	1.17	1.58	1.51	0.69	1.01	0.84	0.49	1.08	0.78	0.85	0.88	-0.06	1.15	1.01	-0.04	-0.43	1.07	1.13	1.03	1.17	0.91	0.9	0.9	0.86	0.46	0.83	0.82	0.85	0.67	0.46	0.69	0.62	0.6	0.56	0.58	0.51	0.49
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	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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	3.07	2.97	1.17	1.72	4.13	-0.33	1.36	1.23	1.17	1.57	1.5	0.69	1.0	0.83	0.48	1.05	0.77	0.85	0.88	-0.06	1.14	0.99	-0.04	-0.43	1.03	1.08	0.98	1.11	0.86	0.82	0.82	0.81	0.44	0.8	0.79	0.82	0.64	0.44	0.67	0.6	0.58	0.54	0.56	0.49	0.47
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31
Value	102	98	89	85	131	-75.043	100	10	25	54	39	14	-9.139	37	9.478	37	30	33	22	-12.193	4.152	15	-29.337	-23.134	34	8.871	25	24	26	25	28	23	8.855	19	19	23	14	12	16	14	14	14
Percentage of ComprehensiveIncomeNetOfTax	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	318.1	304.2	0.0	287.9	549.0	-261.7	28.9	32.5	77.7	157.4	11.3	38.1	-23.2	104.9	3.0	160.8	165.5	166.4	8.1	-6.8	1.4	5.4	-9.9	-8.0	12.1	3.1	9.0	8.8	10.0	9.9	12.2	9.8	5.7	13.8	13.7	16.0	10.5	9.3	14.0	11.7	12.3	12.9

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

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	0.283	0.136	-0.112	0.472	0.451	-0.128	0.156	0.595	0.168	0.615	-6.67	-9.002	0.305	3.669	-10.056	14	-3.02	-3.869	-32.469	-50.537	2.505	0.575	2.39	-0.713	-1.542	-1.04	-1.26	-1.569	-1.59	-4.498	-1.972	1.811	0.0	0.0
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	0.9	0.4	0.0	1.6	1.9	-0.4	0.0	1.9	0.5	1.8	-1.9	-24.1	0.8	10.2	-3.2	62.9	-16.2	-19.4	-12.0	-28.2	0.9	0.2	0.8	-0.2	-0.5	-0.4	-0.5	-0.6	-0.6	-1.8	-0.8	0.8	0.0	0.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

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
Value	102	99	89	86	131	-75.171	100	10	25	54	32	5.229	-8.834	41	-0.578	51	27	29	-10.441	-62.73	6.657	16	-26.947	-23.847	33	7.831	23	22	25	20	26	24	8.855	19	19	23
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	319.0	304.6	0.0	289.4	550.9	-262.1	28.9	34.4	78.2	159.2	9.4	14.0	-22.4	115.1	-0.2	223.7	149.3	147.0	-3.8	-35.0	2.3	5.6	-9.0	-8.3	11.5	2.7	8.6	8.2	9.4	8.1	11.3	10.6	5.7	13.8	13.7	16.0

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

Period End	2021-06-30
Value	-9.3
Percentage of GainsLossesOnExtinguishmentOfDebt	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	-29.0

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	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	34	32	35	53	28	31	37	38	32	39	35	41	41	39	55	32	36	33	31	34	32	35	37	88	39	32	35	35	38	36	32	33	27	16	15	14	18	14	10	11	9.623	10	10	6.982	7.425
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	108.6	98.9	0.0	179.5	119.5	111.1	10.9	122.3	100.9	114.5	10.1	112.0	106.4	109.2	17.4	140.6	197.7	166.8	11.4	19.4	11.4	12.2	12.4	30.6	13.5	11.4	12.9	13.0	14.2	14.5	13.6	14.2	17.7	11.3	10.8	9.7	13.2	10.9	9.2	9.3	8.3	9.2	0.0	7.1	7.7

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	121	121	47	74	166	-6.021	57	42	48	53	55	29	38	33	11	59	32	27	38	-65.714	44	39	-11.767	-14.251	41	45	46	40	35	30	38	31	18	32	33	35	31	18	27	25	24	22	23	18	18
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	378.6	374.4	0.0	251.3	694.6	-21.0	16.4	136.0	150.3	153.7	15.8	80.0	97.0	92.3	3.6	259.6	174.5	136.4	14.3	-36.6	15.3	13.8	-4.0	-5.0	14.2	16.1	16.8	14.7	13.1	12.0	16.4	13.4	11.7	22.2	23.3	24.3	22.6	14.4	23.6	20.9	20.9	20.2	0.0	19.3	19.2

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	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	24	26	10	19	35	4.558	13	3.021	11	3.673	9.095	16	11	9.47	8.607	17	13	12	28	-13.768	13	10	-13.363	-4.887	15	15	16	10	14	11	15	10	7.267	12	13	13	12	7.344	10	9.868	9.486	8.601	9.075	6.632	6.749
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	76.7	82.9	0.0	66.3	148.5	15.9	4.0	9.7	36.4	10.6	2.6	45.2	28.6	26.3	2.7	77.2	72.4	60.4	10.5	-7.7	4.6	3.5	-4.5	-1.7	5.5	5.6	6.1	3.7	5.2	4.6	6.4	4.4	4.7	8.7	9.3	9.6	9.1	5.6	8.9	8.2	8.2	7.8	0.0	6.8	7.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

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	2015-12-31	2015-09-30	2014-12-31	2014-09-30
Value	23	0.813	1.662	70	15	0.766	12	7.307	9.109	15	32	11	13	15	16
Percentage of IncomeTaxesPaidNet	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	73.2	2.5	0.0	237.9	64.8	2.7	3.6	23.4	28.2	43.4	9.5	4.0	4.8	5.6	6.1

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	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	44	46	36	67	50	54	53	54	63	54	56	65	60	57	51	52	50	49	48	48	50	50	50	47	46	42	42	43	43	37	29	29	7.482	6.854	23	1.475	0.65	5.515	4.979	5.175	5.369	5.593	5.003	4.928	4.88
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	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	137.7	143.1	0.0	228.2	210.1	190.6	15.4	174.2	197.8	159.1	16.3	174.1	153.4	159.8	16.3	228.3	270.4	246.3	17.9	27.1	17.5	17.5	16.9	16.6	15.9	14.8	15.3	15.9	16.1	15.0	12.5	12.4	4.8	4.8	16.3	1.0	0.5	4.2	4.3	4.3	4.6	5.1	0.0	5.0	5.1

Interest Expense Debt

us-gaap:InterestExpenseDebt us-gaap:LongtermDebtType

us-gaap:InterestExpenseDebt

ecpg:ConvertibleNotesAndExchangeableNotes

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
Value	3.972	4.923	7.553	7.512	8.894	8.843	9.193	10
Percentage of InterestExpenseDebt	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	12.4	15.1	0.0	25.2	37.1	30.8	2.6	32.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ecpg:ConvertibleNotesAndExchangeableNotes	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

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
Value	31	37	21	59	27	60	47	39	29	62	34
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
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	99.5	114.6	0.0	200.4	116.4	210.9	13.5	127.6	92.6	179.8	10.0

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	96	94	37	54	130	-10.454	43	38	36	49	47	20	26	21	12	28	20	22	22	-1.524	29	25	-0.988	-10.959	27	29	26	30	23	23	22	21	11	19	20	21	16	11	17	15	14	13	14	12	11
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	301.0	291.0	0.0	183.5	544.2	-36.5	12.4	124.6	113.4	142.6	13.5	55.4	66.7	60.7	4.0	122.0	108.4	110.7	8.4	-0.8	10.2	8.9	-0.3	-3.8	9.5	10.3	9.6	11.1	8.8	9.1	9.7	9.3	7.1	13.5	14.0	14.7	11.8	8.8	14.7	12.7	12.8	12.4	0.0	12.5	12.2

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

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	0.284	0.135	-0.108	0.457	0.452	-0.125	0.147	0.544	0.161	0.188	-1.003	-7.709	0.676	1.886	-9.902	13	-1.179	-7.119	-11.489	-50.422	1.245	0.913	2.584	1.595	-2.472	0.542	1.307	-0.197	-2.208	-4.35	-0.737	-0.822	0.0	0.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	0.9	0.4	0.0	1.5	1.9	-0.4	0.0	1.7	0.5	0.5	-0.3	-20.6	1.7	5.2	-3.1	60.4	-6.3	-35.6	-4.2	-28.1	0.4	0.3	0.9	0.6	-0.9	0.2	0.5	-0.1	-0.8	-1.7	-0.3	-0.3	0.0	0.0

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	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	-52.893	-46.581	-76.502	-67.601	-53.338	-53.223	-56.092	-65.911	-65.157	-57.943	-60.759	-67.633	-65.151	-55.269	-52.849	-43.882	-47.987	-48.596	-48.577	-44.532	-47.463	-43.567	-49.54	-48.74	-45.855	-40.186	-41.959	-44.03	-43.143	-37.697	-29.707	-29.485	-11.604	-6.394	-6.212	-5.976	-6.42	-5.248	-5.166	-5.521	-5.346	-5.477	-4.937	-4.78	-4.97
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	-165.0	-143.3	0.0	-226.9	-222.7	-185.6	-16.1	-211.2	-201.6	-167.7	-17.4	-180.9	-165.1	-153.7	-16.6	-189.9	-256.9	-243.3	-17.9	-24.8	-16.4	-15.1	-16.6	-16.9	-15.8	-14.1	-15.2	-16.1	-16.0	-14.9	-12.5	-12.5	-7.4	-4.4	-4.3	-4.1	-4.6	-4.0	-4.4	-4.6	-4.6	-5.0	0.0	-4.9	-5.2

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	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	253	248	258	261	206	241	234	247	233	236	232	239	246	238	253	202	210	196	183	200	197	205	259	253	203	199	188	188	190	185	168	174	126	105	103	103	102	106	83	89	86	82	71	74	72
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	790.4	764.3	0.0	877.0	861.5	843.4	67.4	793.5	721.4	683.1	66.8	639.9	624.3	662.6	79.8	877.6	1125.9	981.9	67.8	111.8	68.3	71.1	87.3	88.0	70.0	69.9	68.1	69.1	70.8	73.1	71.1	74.0	80.9	73.4	72.3	71.6	72.9	81.6	71.8	74.5	74.4	74.8	0.0	75.8	75.6

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	174	168	124	142	219	47	113	108	113	111	115	97	103	88	64	103	80	75	87	-21.182	91	83	37	34	87	86	88	84	78	68	68	61	29	38	39	41	38	23	32	30	29	27	28	23	23
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	543.6	517.6	0.0	478.2	917.3	164.6	32.6	347.2	351.9	321.4	33.2	260.9	262.2	245.9	20.2	449.4	431.4	379.8	32.2	-11.8	31.7	28.9	12.7	12.0	30.0	30.1	31.9	30.9	29.2	26.9	28.9	26.0	19.1	26.6	27.7	28.4	27.1	18.4	28.0	25.5	25.6	25.2	0.0	24.2	24.4

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

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	5.5	4.273	52	31	-1.468	-64.592	57	-28.68	-11.556	5.55	-10.769	-6.68	-34.988	16
Percentage of OtherComprehensiveIncomeLossNetOfTax	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	17.2	13.1	0.0	104.4	-6.1	-225.2	16.5	-91.9	-35.8	16.1	-3.1	-17.9	-88.7	44.7

Other Income

us-gaap:OtherIncome

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	1343000.0	1766000.0	884000.0	949000.0	789000.0	1697000.0	9301000.0	144000.0	0	529000.0
Percentage of OtherIncome	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	4.2	5.4	0.0	3.2	3.3	5.9	2.7	0.5	0.0	1.5

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	0.566	-0.055	0.854	0.361	-3.011	1.439	-2.577	-11.546	-1.244	-2.976	-3.803	-2.539	-4.615	2.193	-1.157	8.873	2.529	0.602	-0.13	4.1	3.134	7.124	0.647	-0.924	0.395	2.117	0.305	-0.532	0.075	0.265	0.04	-0.299	-4.122	0.46	0.328	1.036	0.077	0.267	-0.187	-0.346	0.023	0.116	0.066	0.148	-0.09
Percentage of OtherNonoperatingIncomeExpense	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	1.8	-0.2	0.0	1.2	-12.6	5.0	-0.7	-37.0	-3.8	-8.6	-1.1	-6.8	-11.7	6.1	-0.4	38.4	13.5	3.0	-0.0	2.3	1.1	2.5	0.2	-0.3	0.1	0.7	0.1	-0.2	0.0	0.1	0.0	-0.1	-2.6	0.3	0.2	0.7	0.1	0.2	-0.2	-0.3	0.0	0.1	0.0	0.2	-0.1

Profit Loss

us-gaap:ProfitLoss

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
Value	96	94	37	55	130	-10.579	43	39	36	49	46	13	26	23	2.779	42	19	14	11	-51.946	30	26	1.596	-9.364	25	29	27	30	21	18	22	21	11	19	20	21
Percentage of ProfitLoss	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	301.9	291.4	0.0	185.0	546.1	-36.9	12.4	126.3	113.9	143.1	13.2	34.8	68.4	65.9	0.9	182.4	102.1	75.0	4.2	-29.0	10.7	9.2	0.5	-3.3	8.7	10.5	10.1	11.0	7.9	7.4	9.4	8.9	7.1	13.5	14.0	14.7

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest

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
Value	0.284	0.135	-0.108	0.457	0.452	-0.125	0.147	0.544
Percentage of ProfitLoss	0.3	0.1	-0.3	0.8	0.3	1.2	0.3	1.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	0.9	0.4	0.0	1.5	1.9	-0.4	0.0	1.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest	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
Value	96	94	37	54	130	-10.454	43	38
Percentage of ProfitLoss	99.7	99.9	100.3	99.2	99.7	98.8	99.7	98.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	301.0	291.0	0.0	183.5	544.2	-36.5	12.4	124.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	32	32	32	29	23	28	347	31	32	34	348	37	39	35	317	23	18	19	271	179	289	289	297	287	290	285	276	273	269	253	237	235	156	144	143	144	141	130	116	120	115	110	99	97	96
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	427	416	382	403	426	289	347	347	344	345	348	332	332	316	317	306	290	271	271	179	289	289	297	287	290	285	276	273	269	253	237	235	156	144	143	144	141	130	116	120	115	110	99	97	96
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	1334.0	1281.9	1170.0	1355.2	1778.8	1008.0	100.0	1113.4	1067.0	1000.5	100.0	890.0	841.8	881.3	100.0	1327.1	1557.3	1361.7	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	4679	4770	4864	4732	4740	4614	4909	4708	4811	4813	4631	4647	4606	4642	4490	4173	3918	3764	3670	3705	3770	3823	4219	4103	4113	3648	3750	3722	3592	3434	2685	2591	1805	1132	1171	1109	1167	837	812	747	762	736
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	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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:Assets us-gaap:DebtInstrument

ecpg:CabotSecuritisationSeniorFacility

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	366	381	397	401	408	377	342	329	331	332	381	329	414	308
Percentage of Assets	7.8	8.0	8.2	8.5	8.6	8.2	7.0	7.0	6.9	6.9	8.2	7.1	9.0	6.6
Percentage of Assets	7.8	8.0	8.2	8.5	8.6	8.2	7.0	7.0	6.9	6.9	8.2	7.1	9.0	6.6
Percentage of Assets ecpg:CabotSecuritisationSeniorFacility	100.0	100.0	100.0	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	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	3325	3491	3644	3604	3698	3709	3884	3784	3908	3939	3812	3868	3854	3885	3766	3450	3250	3125	3069	3093	3096	3159	3571	3443	3432	2974	3085	3081	2979	2836	2082	2030	1295	705	765	677	764	453	440	393	425	433
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	71.1	73.2	74.9	76.2	78.0	80.4	79.1	80.4	81.2	81.8	82.3	83.2	83.7	83.7	83.9	82.7	83.0	83.0	83.6	83.5	82.1	82.6	84.6	83.9	83.4	81.5	82.3	82.8	82.9	82.6	77.6	78.4	71.7	62.3	65.4	61.1	65.4	54.1	54.3	52.6	55.8	58.9

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	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	4679	4770	4864	4732	4740	4614	4909	4708	4811	4813	4631	4647	4606	4642	4490	4173	3918	3764	3670	3705	3770	3823	4219	4103	4113	3648	3750	3722	3592	3434	2685	2591	1805	1132	1171	1109	1167	837	812	747	762	736
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	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	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	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2010-12-31	2009-12-31	2008-12-31
Value	1354	1276	1217	1124	1038	902	1022	920	900	872	818	778	624	610	581	571	553	600	559	577	619	610	596	621	642	633	623	596	568	557	571	543	510	426	405	431	403	384	371	353	337	302	243	203
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	100.0	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	28.9	26.8	25.0	23.8	21.9	19.6	20.8	19.6	18.7	18.1	17.7	16.7	13.6	13.2	13.0	13.7	14.1	16.0	15.2	15.6	16.4	16.0	14.1	15.2	15.6	17.4	16.6	16.0	15.8	16.2	21.3	21.0	28.3	37.7	34.6	38.9	34.6	45.9	45.7	47.4	44.2	41.1	0.0	0.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30	2009-12-31	2008-12-31
Value	198	184	189	169	293	188	192	186	168	167	157	204	181	217	212	188	146	159	149	157	139	144	153	175	138	136	124	115	123	196	126	110	222	29	17	19	15	15	8.047	10	14	22	10	11	10	8.388	10
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	4.2	3.9	3.9	3.6	6.2	4.1	3.9	4.0	3.5	3.5	3.4	4.4	3.9	4.7	4.7	4.5	3.7	4.2	4.1	4.3	3.7	3.8	3.6	4.3	3.4	3.7	3.3	3.1	3.4	5.7	4.7	4.3	12.3	2.6	1.5	1.7	1.3	1.8	1.0	1.4	1.9	0.0	1.5	0.0	0.0	0.0	0.0

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31
Value	0.678	0.559	2.223	0.238	0.015	0.09	0.034
Percentage of CashAndCashEquivalentsAtCarryingValue	0.3	0.3	1.2	0.1	0.0	0.0	0.0
Percentage of Assets	0.0	0.0	0.0	0.0	0.0	0.0	0.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary	0.0	0.0	0.0	0.0	0.0	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	2018-03-31	2017-12-31
Value	198	184	189	169	293	188	192	186	168	167	157	217	212
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
Percentage of Assets	4.2	3.9	3.9	3.6	6.2	4.1	3.9	4.0	3.5	3.5	3.4	4.7	4.7

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

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	2011-12-31
Value	257	222	230	205	181	174	144	115	53	43
Percentage of PropertyPlantAndEquipmentGross	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	5.3	4.5	5.0	4.6	4.9	4.1	3.8	4.3	4.6	5.4

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

ecpg:ComputerEquipmentAndSoftware

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	2011-12-31
Value	194	136	172	161	138	127	101	79	33	27
Percentage of PropertyPlantAndEquipmentGross	75.7	61.4	74.9	78.2	76.2	72.8	70.5	69.0	62.0	62.2
Percentage of Assets	4.0	2.8	3.7	3.6	3.8	3.0	2.7	3.0	2.8	3.4
Percentage of Assets ecpg:ComputerEquipmentAndSoftware	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

ecpg:FurnitureFixturesAndEquipment

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	2011-12-31
Value	10	10	19	17	19	22	18	15	7.605	6.211
Percentage of PropertyPlantAndEquipmentGross	4.1	4.7	8.3	8.6	10.6	12.6	12.8	13.8	14.2	14.1
Percentage of Assets	0.2	0.2	0.4	0.4	0.5	0.5	0.5	0.6	0.6	0.8
Percentage of Assets ecpg:FurnitureFixturesAndEquipment	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

ecpg:TelecommunicationsEquipmentAndOther

Period End	2020-12-31	2019-12-31	2018-12-31
Value	3.45	3.893	1.866
Percentage of PropertyPlantAndEquipmentGross	1.3	1.8	0.8
Percentage of Assets	0.1	0.1	0.0
Percentage of Assets ecpg:TelecommunicationsEquipmentAndOther	0.0	0.0	0.0

us-gaap:ConstructionInProgress

Period End	2020-12-31	2019-12-31	2018-12-31
Value	4.739	2.089	25
Percentage of PropertyPlantAndEquipmentGross	1.8	0.9	11.2
Percentage of Assets	0.1	0.0	0.6
Percentage of Assets us-gaap:ConstructionInProgress	0.0	0.0	0.0

us-gaap:LeaseholdImprovements

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	2011-12-31
Value	43	37	34	21	17	19	17	15	6.692	6.044
Percentage of PropertyPlantAndEquipmentGross	17.0	16.8	15.1	10.4	9.6	11.3	12.4	13.1	12.5	13.8
Percentage of Assets	0.9	0.8	0.8	0.5	0.5	0.5	0.5	0.6	0.6	0.7
Percentage of Assets us-gaap:LeaseholdImprovements	0.0	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	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	120	124	127	120	117	119	120	116	118	117	115	96	89	81	76	71	71	71	72	66	67	68	73	63	66	64	66	64	58	55	55	50	36	24	23	19	20	19	17	16	14	13
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	2.6	2.6	2.6	2.5	2.5	2.6	2.4	2.5	2.5	2.4	2.5	2.1	1.9	1.7	1.7	1.7	1.8	1.9	2.0	1.8	1.8	1.8	1.7	1.5	1.6	1.8	1.8	1.7	1.6	1.6	2.1	1.9	2.0	2.2	2.0	1.8	1.7	2.3	2.2	2.2	1.9	1.9

Goodwill

us-gaap:Goodwill

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	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	915	912	906	866	838	839	884	831	865	882	868	898	909	957	928	853	831	796	785	819	840	890	924	940	969	865	897	921	879	844	504	489	119	51	55	55	55	6.047	15	15	15	15
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	100.0	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	19.6	19.1	18.6	18.3	17.7	18.2	18.0	17.7	18.0	18.3	18.7	19.3	19.7	20.6	20.7	20.4	21.2	21.2	21.4	22.1	22.3	23.3	21.9	22.9	23.6	23.7	23.9	24.8	24.5	24.6	18.8	18.9	6.6	4.5	4.7	5.0	4.7	0.7	2.0	2.1	2.1	2.2

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

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	2012-09-30	2012-06-30	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	41	42	45	44	44	46	51	49	56	59	60	64	67	75	75	29	29	27	28	31	33	35	18	19	24	18	21	17	18	22	23	8.519	0.462	0.487	0.515	0.55	0.462	0.534	0.605	0.748
Percentage of IntangibleAssetsNetExcludingGoodwill	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	0.9	0.9	1.0	1.0	1.1	1.2	1.2	1.3	1.4	1.5	1.6	1.7	0.7	0.8	0.7	0.8	0.8	0.9	0.9	0.4	0.5	0.6	0.5	0.6	0.5	0.5	0.7	0.9	0.3	0.0	0.0	0.0	0.0	0.1	0.1	0.1	0.1

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

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	2014-12-31	2013-12-31	2013-09-30	2013-06-30	2012-12-31
Value	41	42	45	44	44	46	51	49	56	59	60	64	67	75	75	29	29	27	28	16	19	21	10	3.834	0.487
Percentage of FiniteLivedIntangibleAssetsNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	0.9	0.9	1.0	1.0	1.1	1.2	1.2	1.3	1.4	1.5	1.6	1.7	0.7	0.8	0.7	0.8	0.4	0.5	0.8	0.4	0.2	0.0

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

ecpg:TradeNameAndOther

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	0.541	0.586	0.642	0.668	0.7	0.705	1.055	0.881	2.886	3.043	3.133	3.505	3.754	6.909	7.389	6.818	7.118	7.388	7.657	6.292	6.643	7.377	7.366	7.999	10	7.338	8.749	3.791	4.047	14	15	0.487
Percentage of FiniteLivedIntangibleAssetsNet	1.3	1.4	1.4	1.5	1.6	1.5	2.1	1.8	5.1	5.1	5.2	5.5	5.6	9.1	9.8	23.3	24.0	26.9	27.1	0.0	0.0	0.0	45.6	0.0	0.0	0.0	44.6	0.0	0.0	0.0	70.6	100.0
Percentage of Assets	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.1	0.1	0.1	0.1	0.1	0.1	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.1	0.1	0.4	0.6	0.0
Percentage of Assets ecpg:TradeNameAndOther	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	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:CustomerRelationships

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	40	42	44	43	43	45	49	48	52	55	56	60	62	67	67	20	20	17	17	20	21	22	4.453	4.702	4.052	4.143	4.694	5.429	5.905	1.815	1.901
Percentage of FiniteLivedIntangibleAssetsNet	98.4	98.2	97.9	97.7	97.5	97.4	96.8	96.9	93.5	93.4	93.2	93.8	93.5	89.5	88.6	70.4	69.5	64.8	63.7	0.0	0.0	0.0	27.5	0.0	0.0	0.0	23.9	0.0	0.0	0.0	8.8
Percentage of Assets	0.9	0.9	0.9	0.9	0.9	1.0	1.0	1.0	1.1	1.2	1.2	1.3	1.4	1.5	1.5	0.5	0.5	0.5	0.5	0.6	0.6	0.6	0.1	0.1	0.1	0.1	0.1	0.1	0.2	0.1	0.1
Percentage of Assets us-gaap:CustomerRelationships	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	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:DevelopedTechnologyRights

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	0.113	0.194	0.288	0.362	0.435	0.513	0.61	0.681	0.799	0.882	1.015	0.463	0.64	1.023	1.272	1.835	1.927	2.297	2.606	4.312	4.777	5.416	4.348	4.848	8.256	5.327	6.159	5.852	6.31	4.196	4.441
Percentage of FiniteLivedIntangibleAssetsNet	0.3	0.5	0.6	0.8	1.0	1.1	1.2	1.4	1.4	1.5	1.7	0.7	1.0	1.4	1.7	6.3	6.5	8.4	9.2	0.0	0.0	0.0	26.9	0.0	0.0	0.0	31.4	0.0	0.0	0.0	20.6
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	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.2	0.1	0.2	0.2	0.2	0.1	0.2
Percentage of Assets us-gaap:DevelopedTechnologyRights	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

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	69	69	72	72	70	74	75	75	95	91
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	1.5	1.5	1.5	1.5	1.5	1.6	1.5	1.6	2.0	1.9

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	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	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	292	323	349	309	289	302	329	291	341	338	257	244	250	276	302	254	239	229	215	206	184	157	245	229	199	214	197	218	217	181	154	120	91	31	27	23	21	11	11	11	13	13
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	6.2	6.8	7.2	6.5	6.1	6.5	6.7	6.2	7.1	7.0	5.5	5.3	5.4	6.0	6.7	6.1	6.1	6.1	5.9	5.6	4.9	4.1	5.8	5.6	4.9	5.9	5.3	5.9	6.1	5.3	5.8	4.6	5.1	2.7	2.3	2.1	1.8	1.4	1.5	1.5	1.8	1.8

us-gaap:OtherAssets us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31
Value	4.404	4.687	5.127	4.773	4.836	4.645	4.759
Percentage of OtherAssets	1.5	1.5	1.5	1.5	1.7	1.5	1.4
Percentage of Assets	0.1	0.1	0.1	0.1	0.1	0.1	0.1
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Long Term Debt

us-gaap:LongTermDebt us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:LongTermDebt

ecpg:CabotSecuritisationSeniorFacility, us-gaap:LineOfCredit

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2019-12-31
Value	484	482	478	452	464
Percentage of LongTermDebt	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	10.3	10.1	9.8	9.6	9.5
Percentage of Assets ecpg:CabotSecuritisationSeniorFacility us-gaap:LineOfCredit	0.0	0.0	0.0	0.0	0.0

ecpg:GlobalSeniorSecuredRevolvingCreditFacility, us-gaap:LineOfCredit

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	330	520	481	585
Percentage of LongTermDebt	68.2	107.9	100.6	129.4
Percentage of Assets	7.1	10.9	9.9	12.4
Percentage of Assets ecpg:GlobalSeniorSecuredRevolvingCreditFacility us-gaap:LineOfCredit	0.0	0.0	0.0	0.0

ecpg:GlobalSeniorSecuredRevolvingCreditFacility, us-gaap:RevolvingCreditFacility

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	330	520	481	585
Percentage of LongTermDebt	68.2	107.9	100.6	129.4
Percentage of Assets	7.1	10.9	9.9	12.4
Percentage of Assets ecpg:GlobalSeniorSecuredRevolvingCreditFacility us-gaap:RevolvingCreditFacility	0.0	0.0	0.0	0.0

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

ecpg:ConvertibleNotesAndExchangeableNotes, ecpg:ConvertibleAndExchangeableNotesPayable

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2019-12-31
Value	422	422	583	583	672
Percentage of LongTermDebt	87.3	87.6	122.0	129.0	145.0
Percentage of Assets	9.0	8.9	12.0	12.3	13.7
Percentage of Assets ecpg:ConvertibleNotesAndExchangeableNotes ecpg:ConvertibleAndExchangeableNotesPayable	0.0	0.0	0.0	0.0	0.0

ecpg:EncorePrivatePlacementNotes, us-gaap:NotesPayableOtherPayables

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2019-12-31
Value	127	136	146	156	308
Percentage of LongTermDebt	26.2	28.4	30.7	34.6	66.5
Percentage of Assets	2.7	2.9	3.0	3.3	6.3
Percentage of Assets ecpg:EncorePrivatePlacementNotes us-gaap:NotesPayableOtherPayables	0.0	0.0	0.0	0.0	0.0

ecpg:SeniorSecuredNotes, us-gaap:SeniorNotes

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2019-12-31
Value	1667	1622	1651	1542	1129
Percentage of LongTermDebt	344.5	336.3	345.4	341.0	243.3
Percentage of Assets	35.6	34.0	34.0	32.6	23.0
Percentage of Assets ecpg:SeniorSecuredNotes us-gaap:SeniorNotes	0.0	0.0	0.0	0.0	0.0

us-gaap:LongTermDebt us-gaap:LongtermDebtType

us-gaap:OtherDebtSecurities

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2019-12-31
Value	22	24	24	30	54
Percentage of LongTermDebt	4.7	5.2	5.1	6.8	11.7
Percentage of Assets	0.5	0.5	0.5	0.6	1.1
Percentage of Assets us-gaap:OtherDebtSecurities	0.0	0.0	0.0	0.0	0.0

Debt And Capital Lease Obligations

us-gaap:DebtAndCapitalLeaseObligations

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	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	2999	3151	3281	3252	3353	3404	3513	3429	3529	3592	3490	3561	3530	3607	3446	3148	2963	2870	2805	2848	2849	2893	3216	3116	3134	2690	2773	2790	2715	2612	1850	1806	1107	646	706	615	702	398	388	344	378	385
Percentage of DebtAndCapitalLeaseObligations	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	64.1	66.1	67.5	68.7	70.7	73.8	71.6	72.8	73.4	74.6	75.4	76.6	76.6	77.7	76.8	75.4	75.6	76.3	76.4	76.9	75.6	75.7	76.2	76.0	76.2	73.8	74.0	75.0	75.6	76.1	68.9	69.7	61.4	57.0	60.3	55.5	60.1	47.5	47.9	46.0	49.6	52.3

us-gaap:DebtAndCapitalLeaseObligations us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31
Value	484	482	478	452	433	435	464
Percentage of DebtAndCapitalLeaseObligations	16.1	15.3	14.6	13.9	12.9	12.8	13.2
Percentage of Assets	10.3	10.1	9.8	9.6	9.2	9.4	9.5
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Long Term Debt And Capital Lease Obligations

us-gaap:LongTermDebtAndCapitalLeaseObligations

Period End	2020-12-31
Value	3373
Percentage of LongTermDebtAndCapitalLeaseObligations	100.0
Percentage of Assets	69.3

Minority Interest

us-gaap:MinorityInterest

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	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	2604000.0	2468000.0	2580000.0	3536000.0	3085000.0	3213000.0	3057000.0	2462000.0	2294000.0	1679000.0	-839000.0	-9121000.0	-9057000.0	-9929000.0	-8894000.0	-11810000.0	-9154000.0	-7539000.0	-3176000.0	8940000.0	8394000.0	7285000.0	3960000.0	3564000.0	4054000.0	3981000.0	3374000.0	2948000.0	3394000.0	4010000.0
Percentage of MinorityInterest	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.0	0.0	-0.0	-0.2	-0.2	-0.2	-0.2	-0.3	-0.2	-0.2	-0.1	0.2	0.2	0.2	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

Period End	2020-12-31
Value	15
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	100.0
Percentage of Assets	0.3

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

Period End	2020-12-31
Value	14
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree	100.0
Percentage of Assets	0.3

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

Period End	2020-12-31
Value	14
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour	100.0
Percentage of Assets	0.3

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

Period End	2020-12-31
Value	11
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive	100.0
Percentage of Assets	0.2

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

Period End	2020-12-31
Value	37
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	100.0
Percentage of Assets	0.8

Operating Lease Liability

us-gaap:OperatingLeaseLiability

Period End	2020-12-31	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	90	93	94	109	106
Percentage of OperatingLeaseLiability	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	1.9	1.9	2.0	2.3	2.2

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

Period End	2020-12-31
Value	113
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue	100.0
Percentage of Assets	2.3

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

Period End	2020-12-31
Value	22
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	100.0
Percentage of Assets	0.5

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	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2010-12-31	2009-12-31	2008-12-31
Value	1354	1276	1217	1124	1038	902	1022	920	900	872	818	778	624	610	581	571	553	600	559	577	619	610	596	621	642	633	623	596	568	557	571	543	510	426	405	431	403	384	371	353	337	302	243	203
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	100.0	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	28.9	26.8	25.0	23.8	21.9	19.6	20.8	19.6	18.7	18.1	17.7	16.7	13.6	13.2	13.0	13.7	14.1	16.0	15.2	15.6	16.4	16.0	14.1	15.2	15.6	17.4	16.6	16.0	15.8	16.2	21.3	21.0	28.3	37.7	34.6	38.9	34.6	45.9	45.7	47.4	44.2	41.1	0.0	0.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

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	2012-12-31	2011-12-31
Value	1354	1278	1220	1127	1042	905	1025	923	902	874	819	777	615	601	571	562	541	591	551	574	628	618	603	625	645	637	626	600	571	560	575	548	405	371
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	28.9	26.8	25.1	23.8	22.0	19.6	20.9	19.6	18.8	18.2	17.7	16.7	13.4	13.0	12.7	13.5	13.8	15.7	15.0	15.5	16.7	16.2	14.3	15.3	15.7	17.5	16.7	16.1	15.9	16.3	21.4	21.2	34.6	45.7

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:CumulativeEffectPeriodOfAdoption

srt:CumulativeEffectPeriodOfAdoptionAdjustment

Period End	2020-12-31	2019-12-31
Value	-17.914	-44.238
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	-1.5	-4.3
Percentage of Assets	-0.4	-0.9
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment	0.0	0.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:AdditionalPaidInCapital

Period End	2020-12-31
Value	-40.372
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	-3.3
Percentage of Assets	-0.8
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:AdditionalPaidInCapital	0.0

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:RetainedEarnings

Period End	2020-12-31	2019-12-31
Value	22	-44.238
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1.8	-4.3
Percentage of Assets	0.5	-0.9
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:RetainedEarnings	0.0	0.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome

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	2016-12-31	2015-12-31	2014-12-31	2013-12-31	2012-12-31	2011-12-31
Value	-59.04	-64.541	-68.813	-121.098	-152.19	-153.355	-88.766	-146.158	-117.427	-105.864	-110.987	-103.394	-96.9	-61.463	-77.356	-104.911	-57.822	-0.922	5.195	-1.774	-1.968
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	-4.4	-5.0	-5.6	-10.7	-14.6	-16.9	-8.7	-15.8	-13.0	-12.1	-13.5	-13.3	-15.7	-10.2	-13.5	-19.0	-9.6	-0.1	0.9	-0.4	-0.5
Percentage of Assets	-1.3	-1.4	-1.4	-2.6	-3.2	-3.3	-1.8	-3.1	-2.4	-2.2	-2.4	-2.2	-2.1	-1.3	-1.7	-2.9	-1.4	-0.0	0.2	-0.2	-0.2
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	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: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	2016-12-31	2015-12-31	2014-12-31	2013-12-31	2012-12-31	2011-12-31
Value	143	167	230	227	227	222	222	221	211	208	208	207	68	45	42	103	110	125	171	88	123
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10.6	13.1	18.9	20.1	21.8	24.6	21.7	24.0	23.4	23.8	25.4	26.8	11.2	7.6	7.5	18.7	18.3	20.0	29.8	21.7	33.2
Percentage of Assets	3.1	3.5	4.7	4.8	4.8	4.8	4.5	4.7	4.4	4.3	4.5	4.5	1.5	1.0	0.9	2.8	2.6	3.3	6.4	7.5	15.2
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

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	2016-12-31	2015-12-31	2014-12-31	2013-12-31	2012-12-31	2011-12-31
Value	0.304	0.31	0.313	0.313	0.313	0.312	0.311	0.311	0.31	0.31	0.309	0.309	0.259	0.259	0.258	0.256	0.253	0.258	0.255	0.232	0.245
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	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
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
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

us-gaap:NoncontrollingInterest

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	2019-03-31	2018-12-31	2018-09-30	2018-06-30	2018-03-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31	2012-12-31	2011-12-31
Value	2.604	2.468	2.58	3.536	3.085	3.213	3.057	2.462	2.294	1.679	-0.839	-9.121	-9.057	-9.929	-7.539	7.285	3.981	4.01	0.0	0.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	0.2	0.2	0.2	0.3	0.3	0.3	0.3	0.3	0.3	0.2	-0.1	-1.5	-1.5	-1.7	-1.4	1.2	0.6	0.7	0.0	0.0
Percentage of Assets	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.0	0.0	-0.0	-0.2	-0.2	-0.2	-0.2	0.2	0.1	0.1	0.0	0.0
Percentage of Assets us-gaap:NoncontrollingInterest	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	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	2016-12-31	2015-12-31	2014-12-31	2013-12-31	2012-12-31	2011-12-31
Value	1269	1172	1055	1018	963	833	888	844	806	769	720	673	652	626	616	560	543	498	394	319	249
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	93.7	91.7	86.5	90.3	92.5	92.0	86.6	91.4	89.3	88.0	87.9	86.6	106.0	104.0	107.8	101.6	90.0	79.5	68.5	78.7	67.2
Percentage of Assets	27.1	24.6	21.7	21.5	20.3	18.1	18.1	17.9	16.8	16.0	15.5	14.5	14.2	13.5	13.7	15.3	12.9	13.3	14.7	27.3	30.8
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

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	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	304000.0	310000.0	313000.0	313000.0	313000.0	312000.0	311000.0	311000.0	310000.0	310000.0	309000.0	309000.0	259000.0	259000.0	258000.0	257000.0	257000.0	257000.0	256000.0	255000.0	255000.0	255000.0	253000.0	253000.0	252000.0	260000.0	258000.0	257000.0	256000.0	257000.0	255000.0	254000.0	253000.0	233000.0	232000.0	250000.0	248000.0	247000.0	245000.0	245000.0	244000.0	240000.0
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	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	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	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

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	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	143	167	230	227	227	222	222	221	211	208	208	207	68	45	42	43	43	113	103	83	112	109	110	106	101	128	125	121	116	132	171	171	163	89	88	133	128	124	123	122	119	113
Percentage of AdditionalPaidInCapital	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	3.1	3.5	4.7	4.8	4.8	4.8	4.5	4.7	4.4	4.3	4.5	4.5	1.5	1.0	0.9	1.0	1.1	3.0	2.8	2.3	3.0	2.9	2.6	2.6	2.5	3.5	3.3	3.3	3.2	3.9	6.4	6.6	9.1	7.9	7.5	12.0	11.0	14.9	15.2	16.3	15.7	15.4

us-gaap:AdditionalPaidInCapital us-gaap:CumulativeEffectPeriodOfAdoption

srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance

Period End	2020-12-31
Value	190
Percentage of AdditionalPaidInCapital	82.5
Percentage of Assets	3.9
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance	0.0

srt:CumulativeEffectPeriodOfAdoptionAdjustment

Period End	2020-12-31
Value	-40.372
Percentage of AdditionalPaidInCapital	-17.5
Percentage of Assets	-0.8
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment	0.0

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	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	1269	1172	1055	1018	963	833	888	844	806	769	720	673	652	626	616	602	593	580	560	597	598	569	543	544	555	527	498	471	441	417	394	371	349	338	319	299	277	261	249	232	217	188
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	27.1	24.6	21.7	21.5	20.3	18.1	18.1	17.9	16.8	16.0	15.5	14.5	14.2	13.5	13.7	14.4	15.1	15.4	15.3	16.1	15.9	14.9	12.9	13.3	13.5	14.5	13.3	12.7	12.3	12.2	14.7	14.3	19.4	29.9	27.3	27.0	23.8	31.2	30.8	31.1	28.5	25.6

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:CumulativeEffectPeriodOfAdoption

srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance

Period End	2020-12-31	2020-01-01	2019-12-31
Value	1078	843	843
Percentage of RetainedEarningsAccumulatedDeficit	102.1	0.0	95.0
Percentage of Assets	22.2	0.0	17.2
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance	0.0	0.0	0.0

srt:CumulativeEffectPeriodOfAdoptionAdjustment

Period End	2021-01-01	2020-12-31	2019-12-31
Value	16	22	-44.238
Percentage of RetainedEarningsAccumulatedDeficit	0.0	2.1	-5.0
Percentage of Assets	0.0	0.5	-0.9
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment	0.0	0.0	0.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

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	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	-59.04	-64.541	-68.813	-121.098	-152.19	-153.355	-88.766	-146.158	-117.427	-105.864	-110.987	-103.394	-96.9	-61.463	-77.356	-74.153	-83.11	-93.773	-104.911	-103.32	-92.536	-68.36	-57.822	-29.279	-14.796	-23.058	-0.922	3.274	10	6.932	5.195	0.455	-3.425	-1.268	-1.774	-1.235	-3.076	-1.286	-1.968	-1.124	0.122	0.151
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	-1.3	-1.4	-1.4	-2.6	-3.2	-3.3	-1.8	-3.1	-2.4	-2.2	-2.4	-2.2	-2.1	-1.3	-1.7	-1.8	-2.1	-2.5	-2.9	-2.8	-2.5	-1.8	-1.4	-0.7	-0.4	-0.6	-0.0	0.1	0.3	0.2	0.2	0.0	-0.2	-0.1	-0.2	-0.1	-0.3	-0.2	-0.2	-0.2	0.0	0.0

Minority Interest

us-gaap:MinorityInterest

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	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	2604000.0	2468000.0	2580000.0	3536000.0	3085000.0	3213000.0	3057000.0	2462000.0	2294000.0	1679000.0	-839000.0	-9121000.0	-9057000.0	-9929000.0	-8894000.0	-11810000.0	-9154000.0	-7539000.0	-3176000.0	8940000.0	8394000.0	7285000.0	3960000.0	3564000.0	4054000.0	3981000.0	3374000.0	2948000.0	3394000.0	4010000.0
Percentage of MinorityInterest	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.0	0.0	-0.0	-0.2	-0.2	-0.2	-0.2	-0.3	-0.2	-0.2	-0.1	0.2	0.2	0.2	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

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	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30
Value	5.651	3.405	3.371	3.884	4.778	4.527	3.145	4.005	3.581	1.826	2.528	5.045	3.141	2.276	2.179	3.001	2.084	1.905	2.539	2.266	1.729	2.405
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue 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	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30
Value	5.651	3.405	3.371	3.884	4.778	4.527	3.145	4.005	3.581	1.826	2.528	5.045	3.141	2.276	2.179	3.001	2.084	1.905	2.539	2.266	1.729	2.405
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	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: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

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	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	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30
Value	79	69	62	40	138	70	47	88	97	10	66	22	96	1.029	42	10	44	27	45	36	17	31	51	15	28	19	-2.591	34	28	-12.442	23	32	21	17	27	26	26	6.669	25	22	17
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	249.0	212.6	192.3	135.2	580.0	246.9	13.7	282.4	302.7	31.8	19.1	59.9	244.8	2.9	13.3	45.0	236.2	136.0	16.6	20.2	6.0	11.0	17.1	5.5	9.7	6.8	-1.0	14.7	12.1	-8.0	16.4	22.5	14.9	12.4	20.8	22.6	22.0	5.8	22.7	23.0	18.0

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	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	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30
Value	145	95	75	18	32	-43.255	-4.375	-82.27	-46.174	-69.514	-71.445	-85.184	-156.399	-84.488	-244.351	-92.705	-66.084	-48.991	-77.176	-38.626	-71.783	18	-117.804	-23.023	-336.373	4.491	-352.99	-2.846	-11.671	-257.374	54	-61.769	65	-320.752	-27.054	-71.592	4.499	-10.801	-10.194	-71.03	-19.472
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	453.6	293.0	230.1	62.4	134.6	-150.8	-1.3	-263.7	-142.9	-201.2	-20.5	-227.8	-396.4	-234.9	-77.0	-401.1	-353.7	-245.3	-28.4	-21.5	-24.8	6.5	-39.6	-8.0	-115.8	1.6	-139.1	-1.2	-5.0	-164.9	37.9	-43.0	45.4	-227.4	-20.8	-61.5	3.7	-9.3	-9.2	-71.2	-19.9

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	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	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30
Value	-209.537	-160.11	-135.309	-180.323	-65.806	-21.762	-51.083	3.735	-43.969	71	-38.55	83	36	84	222	119	7.556	28	29	24	50	-61.487	55	42	316	-12.273	420	-18.68	-131.473	462	-65.95	27	-83.104	302	7.35	42	-34.975	-3.583	-3.41	47	2.922
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	-653.5	-492.4	-413.8	-605.4	-274.8	-75.9	-14.7	12.0	-136.1	207.1	-11.1	224.4	92.3	235.3	70.2	516.9	40.4	141.7	10.9	13.9	17.4	-21.3	18.8	14.6	108.9	-4.3	165.9	-7.9	-55.8	296.0	-45.7	19.3	-57.4	214.7	5.6	36.6	-29.0	-3.1	-3.1	47.5	3.0

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	2012-12-31	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30
Value	-1.795	-3.302	26	2.031	-5.071	-12.03	17	-18.965	4.295	19	-1.919	10	3.185	5.071	34	-2.232	0.876	-4.04	-6.381	-21.522	-3.414	-21.588	-32.112	-1.022	5.041	-4.276	-36.215	-21.479	4.849	4.767	-27.971	3.08	-3.504	0.207	-10.396	0.623	-0.445	-1.31	-0.104	-0.058	0.854	-0.186
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	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	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	12	11	11	10	10	10	11	10.0	9.741	9.995	9.996	9.873	10	10	14	8.522	8.672	8.625	8.74	8.032	8.235	9.861	9.276	8.235	8.084	8.35	8.07	6.933	6.829	6.117	5.02	4.523	2.158	1.846	1.647	1.533	1.297	1.363
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	100.0	100.0	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	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	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30
Value	79	69	62	40	138	70	47	88	97	10	66	22	96	1.029	42	10	44	27	45	36	17	31	51	15	28	19	-2.591	34	28	-12.442	23	32	21	17	27	26	26	6.669	25	22	17
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	249.0	212.6	192.3	135.2	580.0	246.9	13.7	282.4	302.7	31.8	19.1	59.9	244.8	2.9	13.3	45.0	236.2	136.0	16.6	20.2	6.0	11.0	17.1	5.5	9.7	6.8	-1.0	14.7	12.1	-8.0	16.4	22.5	14.9	12.4	20.8	22.6	22.0	5.8	22.7	23.0	18.0

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	96	94	37	54	130	-10.454	43	38	36	49	47	20	26	21	12	28	20	22	22	-1.524	29	25	-0.988	-10.959	27	29	26	30	23	23	22	21	11	19	20	21	16	11	17	15	14	13	14	12	11
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	301.0	291.0	114.1	183.5	544.2	-36.5	12.4	124.6	113.4	142.6	13.5	55.4	66.7	60.7	4.0	122.0	108.4	110.7	8.4	-0.8	10.2	8.9	-0.3	-3.8	9.5	10.3	9.6	11.1	8.8	9.1	9.7	9.3	7.1	13.5	14.0	14.7	11.8	8.8	14.7	12.7	12.8	12.4	14.2	12.5	12.2

Profit Loss

us-gaap:ProfitLoss

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
Value	96	94	37	55	130	-10.579	43	39	36	49	46	13	26	23	2.779	42	19	14	11	-51.946	30	26	1.596	-9.364	25	29	27	30	21	18	22	21	11	19	20	21
Percentage of ProfitLoss	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	301.9	291.4	113.8	185.0	546.1	-36.9	12.4	126.3	113.9	143.1	13.2	34.8	68.4	65.9	0.9	182.4	102.1	75.0	4.2	-29.0	10.7	9.2	0.5	-3.3	8.7	10.5	10.1	11.0	7.9	7.4	9.4	8.9	7.1	13.5	14.0	14.7

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest

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
Value	0.284	0.135	-0.108	0.457	0.452	-0.125	0.147	0.544
Percentage of ProfitLoss	0.3	0.1	-0.3	0.8	0.3	1.2	0.3	1.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	0.9	0.4	-0.3	1.5	1.9	-0.4	0.0	1.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest	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
Value	96	94	37	54	130	-10.454	43	38
Percentage of ProfitLoss	99.7	99.9	100.3	99.2	99.7	98.8	99.7	98.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	301.0	291.0	114.1	183.5	544.2	-36.5	12.4	124.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings	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	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	5.651	3.405	3.371	3.884	4.778	4.527	3.145	4.005	3.581	1.826	2.528	5.007	3.169	2.276	3.358	3.531	2.76	0.75	3.125	0.633	5.151	3.718	4.749	5.156	6.198	5.905	3.621	4.009	4.715	4.836	3.486	3.983	2.179	3.001	2.084	1.9	2.539	2.266	1.729	2.405	1.81	1.765	1.254	1.549	1.446
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	100.0	100.0	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	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	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30
Value	145	95	75	18	32	-43.255	-4.375	-82.27	-46.174	-69.514	-71.445	-85.184	-156.399	-84.488	-244.351	-92.705	-66.084	-48.991	-77.176	-38.626	-71.783	18	-117.804	-23.023	-336.373	4.491	-352.99	-2.846	-11.671	-257.374	54	-61.769	65	-320.752	-27.054	-71.592	4.499	-10.801	-10.194	-71.03	-19.472
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	453.6	293.0	230.1	62.4	134.6	-150.8	-1.3	-263.7	-142.9	-201.2	-20.5	-227.8	-396.4	-234.9	-77.0	-401.1	-353.7	-245.3	-28.4	-21.5	-24.8	6.5	-39.6	-8.0	-115.8	1.6	-139.1	-1.2	-5.0	-164.9	37.9	-43.0	45.4	-227.4	-20.8	-61.5	3.7	-9.3	-9.2	-71.2	-19.9

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

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	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30
Value	11	9.63	5.49	7.538	8.89	13	7.253	10	30	12	13	11	7.608	8.534	5.903	6.081	15	6.454	7.842	2.252	12	5.112	6.371	4.271	9.64	4.655	5.965	2.978	5.245	2.843	3.02	2.315	2.6	1.07	1.04	1.555	2.106	1.997	0.831	0.63	0.999	0.076
Percentage of PaymentsToAcquirePropertyPlantAndEquipment	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 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	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	2014-03-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30
Value	-209.537	-160.11	-135.309	-180.323	-65.806	-21.762	-51.083	3.735	-43.969	71	-38.55	83	36	84	222	119	7.556	28	29	24	50	-61.487	55	42	316	-12.273	420	-18.68	-131.473	462	-65.95	27	-83.104	302	7.35	42	-34.975	-3.583	-3.41	47	2.922
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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 RevenueFromContractWithCustomerExcludingAssessedTax	-653.5	-492.4	-413.8	-605.4	-274.8	-75.9	-14.7	12.0	-136.1	207.1	-11.1	224.4	92.3	235.3	70.2	516.9	40.4	141.7	10.9	13.9	17.4	-21.3	18.8	14.6	108.9	-4.3	165.9	-7.9	-55.8	296.0	-45.7	19.3	-57.4	214.7	5.6	36.6	-29.0	-3.1	-3.1	47.5	3.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

Period End	2021-06-30	2021-03-31	2016-12-31	2016-09-30	2015-12-31	2015-09-30	2014-12-31	2014-09-30	2013-12-31	2013-09-30
Value	27	20	0.0	0.0	0.0	0.0	0.0	0.0	0.729	-0.729
Percentage of PaymentsForRepurchaseOfCommonStock	100.0	100.0	0.0	0.0	0.0	0.0	0.0	0.0	100.0	100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

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	2011-12-31	2011-09-30	2011-06-30
Value	20.3	22.2	-0.6	26.4	0.214	-0.757	0.033	0.071	0.242	0.069	-0.072	0.565	0.295	0.285	0.034	0.297	0.415	0.443	0.135	-0.21	0.304	0.254	-0.148	-0.343	0.388	0.346	0.007	0.252	0.396	0.384	0.009	0.325	0.398	0.393	0	0.395	0.404	0.392	-0.003	0.391	0.391
Percentage of EffectiveIncomeTaxRateContinuingOperations	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

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	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2011-12-31
Value	22.17	22.17	15.21	16.27	15.24	16.23	16.98	14.84	15.3	15.38	15.19	14.14	13.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	100.0	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:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

ecpg:PerformanceStockOptions

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	31.73	31.73	31.54	31.43	0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	143.1	143.1	207.4	193.2	0.0

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	2011-12-31
Value	5.73	10	28	51	45	69	62	58	22	28
Percentage of DeferredTaxLiabilities	100.0	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	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	2014-12-31	2013-12-31	2012-12-31
Value	35	33	39	31	32	26	36	21	11	10	41	14	21	16	60	57	54	55	89	44	21	15	93	14	71	65	14
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

Period End	2020-12-31	2020-09-30	2019-12-31	2018-12-31	2017-12-31	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	2012-12-31	2011-12-31
Value	6.781	8.2	7.908	18	20	21	18	23	24	24	47	48	48	47	38	19	71	1.784	1.23
Percentage of UnrecognizedTaxBenefits	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-12-31	2012-12-31	2011-12-31
Value	38	36	46	34	18	4.517	10	3.595	0.013	0.012
Percentage of DeferredTaxAssetsValuationAllowance	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAmortizedCost

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31
Value	493	544	430	678	519	735
Percentage of CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAmortizedCost	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesChangesToExpectedCurrentAndFuturePeriodRecoveries

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-06-30	2019-03-31
Value	-66.178	-44.537	-9.449	-30.451	-66.007	98	0.0	0.0
Percentage of CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesChangesToExpectedCurrentAndFuturePeriodRecoveries	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0

ecpg:CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesChangesToExpectedCurrentPeriodRecoveries

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-06-30	2019-03-31
Value	109	91	30	78	108	10	0.0	0.0
Percentage of CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesChangesToExpectedCurrentPeriodRecoveries	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0

ecpg:CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesChangesToExpectedFuturePeriodRecoveries

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-06-30	2019-03-31
Value	-43218000.0	-46864000.0	-21471000.0	-47817000.0	-42565000.0	-108980000.0	0	0
Percentage of CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesChangesToExpectedFuturePeriodRecoveries	100.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0

ecpg:CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesDeconsolidationOfReceivablePortfolios

Period End	2020-12-31	2020-09-30	2020-06-30	2019-12-31	2019-09-30	2019-06-30
Value	0.0	5.644	-2.822	0.0	51	0.0
Percentage of CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesDeconsolidationOfReceivablePortfolios	0.0	100.0	100.0	0.0	100.0	0.0

ecpg:CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesDisposalsorTransferstoHeldforSaleNet

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	2016-06-30
Value	2.647	1.665	3.56	1.182	1.531	1.765	2.327	3.589	5.364	2.295	3.072	3.801	2.697	4.771	0.0
Percentage of CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesDisposalsorTransferstoHeldforSaleNet	100.0	100.0	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

ecpg:CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesForeignCurrencyTranslationAdjustmentGainLoss

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
Value	9.545	-7.694	90	67	4.535	-101.071	32	-65.202	-25.671	19	156	-17.301	-102.498	61	10	44	53	29	324	-27.534
Percentage of CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesForeignCurrencyTranslationAdjustmentGainLoss	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesGrossCollections

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31
Value	612	606	536	539	508	527	498	499	514	513	483	498	496	489	437	442	446	440	396	406	434	447	416	421	437	425	394	407	409	396	351	379	278	270	230	245	240	231	185	189	195	191
Percentage of CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesGrossCollections	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesPurchasesOfReceivablePortfolios

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	2011-12-31	2011-09-30	2011-06-30
Value	142	170	127	170	147	214	281	259	242	262	246	248	359	276	300	292	246	218	203	206	233	256	292	187	418	125	258	299	225	467	105	617	423	58	153	47	230	130	136	65	93
Percentage of CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesPurchasesOfReceivablePortfolios	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesPutBacksAndRecalls

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	2011-12-31	2011-09-30	2011-06-30
Value	3.204	3.153	1.6	2.83	6.326	5.068	3.75	2.746	1.395	3.7	0.027	2.074	8.508	3.82	-2.805	0.649	3.237	1.79	8.903	3.16	3.557	12	3.396	5.715	1.623	2.563	4.937	1.544	5.842	3.384	-0.158	0.997	1.576	0.878	1.184	0.267	0.891	0.734	0.509	0.645	0.798
Percentage of CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesPutBacksAndRecalls	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:CollectionAgencyCommissions

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	13	12	13	12	10	13	16	17	13	16	13	10	12	11	10	10	11	11	7.899	8.848	9.274	10	9.326	9.381	8.466	10	8.068	9.517	9.153	8.276	10	14	5.23	3.329	2.98	4.227	4.166	3.959	3.388	3.264	3.596	3.914	3.287	5.389	6.413
Percentage of CollectionAgencyCommissions	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:CostOfLegalCollections

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	66	67	75	60	37	66	53	48	51	49	49	50	51	53	50	48	53	47	42	56	46	54	59	58	57	54	52	53	50	49	49	50	44	42	45	43	41	38	39	40	40	36	29	33	31
Percentage of CostOfLegalCollections	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:EffectiveIncomeTaxRateReconciliationDivestitureOfForeignInvestment

Period End	2020-09-30	2020-06-30	2019-06-30
Value	-1.281	-0.018	0
Percentage of EffectiveIncomeTaxRateReconciliationDivestitureOfForeignInvestment	100.0	100.0	0.0

ecpg:FinancingReceivablePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDateReversals

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2020-01-01
Value	142	170	127	170	-147.939	-214.113	-3328.15
Percentage of FinancingReceivablePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDateReversals	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:FinancingReceivablePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDateWriteOffs

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2020-01-01
Value	493	544	430	678	519	735	82356
Percentage of FinancingReceivablePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDateWriteOffs	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:FinancingReceivablePurchasedWithCreditDeteriorationDiscountPremiumWriteOff

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2020-01-01
Value	658	784	605	1104	786	967	132533
Percentage of FinancingReceivablePurchasedWithCreditDeteriorationDiscountPremiumWriteOff	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:LineOfCreditFacilityIncreaseInBorrowingCapacity us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:SubsequentEventType

ecpg:LineOfCreditFacilityIncreaseInBorrowingCapacity

ecpg:TermLoanOne, ecpg:AmendedRestatedCreditAgreement, us-gaap:SubsequentEvent

Period End	2020-07-09
Value	24
Percentage of LineOfCreditFacilityIncreaseInBorrowingCapacity	100.0

us-gaap:RevolvingCreditFacility, ecpg:AmendedRestatedCreditAgreement, us-gaap:SubsequentEvent

Period End	2020-07-09
Value	243
Percentage of LineOfCreditFacilityIncreaseInBorrowingCapacity	980.6

ecpg:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodDivestitureNetOfTax

Period End	2020-12-31	2020-09-30	2020-06-30	2019-12-31	2019-09-30	2019-06-30
Value	0	0	2632000.0	0	3814000.0	0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodDivestitureNetOfTax	0.0	0.0	100.0	0.0	100.0	0.0

ecpg:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfDivestitureNetOfTax

Period End	2021-06-30	2020-12-31	2020-09-30	2020-06-30	2019-12-31	2019-09-30	2019-06-30
Value	3.947	49	30	0.6	56	-28.05	-8.845
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfDivestitureNetOfTax	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:RepaymentOfLongTermDebtMakeWholePayment us-gaap:DebtInstrument, us-gaap:LongtermDebtType

ecpg:RepaymentOfLongTermDebtMakeWholePayment

ecpg:A2017SeniorSecuredNotes, us-gaap:SeniorNotes

Period End	2020-09-30
Value	10
Percentage of RepaymentOfLongTermDebtMakeWholePayment	100.0

ecpg:RevenueAsPercentageOfCollections

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	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30
Value	63.5	0.66	0.678	0.011	0.633	0.607	0.606	0.007	0.592	0.59	0.575	0.012	0.596	0.59	0.567	0.004	0.617	0.61	0.598	0.007	0.637	0.608	0.615	0.009	0.604	0.598	0.591	0.023	0.586	0.533	0.517	0.008	0.569	0.572	0.549	0.012	0.621	0.575
Percentage of RevenueAsPercentageOfCollections	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:RevenuesAdjustedbyNetAllowances

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	427	416	382	403	426	289	347	355	346	347	348	336	349	326	317	306	290	271
Percentage of RevenuesAdjustedbyNetAllowances	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:RevenuesAdjustedbyNetAllowances us-gaap:StatementGeographical

country:US

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	288	287	241	256	286	208	217	211	199	189	178	178	179	171	166	154	173	170
Percentage of RevenuesAdjustedbyNetAllowances	67.4	69.0	63.2	63.5	67.3	72.0	62.6	59.3	57.5	54.6	51.3	53.1	51.4	52.6	52.5	50.5	59.7	62.6

ecpg:OtherGeographies

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	4.253	5.148	4.456	4.969	3.776	4.898	6.684	13	16	22	26	20	25	24	23	24	22	23
Percentage of RevenuesAdjustedbyNetAllowances	1.0	1.2	1.2	1.2	0.9	1.7	1.9	3.9	4.8	6.5	7.5	6.1	7.3	7.5	7.4	7.9	7.8	8.7

srt:Europe

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
Value	134	123	136	142	135	75	123	130	130	135	143	137	144	130	127	127	94
Percentage of RevenuesAdjustedbyNetAllowances	31.6	29.7	35.7	35.3	31.8	26.3	35.5	36.8	37.7	39.0	41.3	40.8	41.3	40.0	40.1	41.6	32.6

us-gaap:NonUs

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
Value	139	129	147	139	80	144	147	157	157	169	154	151	117	101
Percentage of RevenuesAdjustedbyNetAllowances	32.6	31.0	36.5	32.7	28.0	40.7	42.5	45.4	46.9	48.6	47.4	49.5	40.3	37.4

ecpg:StockIssuedDuringPeriodSharesStockOptionsExercisedIncludesRestrictedStockUnitsNetOfTaxWithholding us-gaap:StatementEquityComponents

ecpg:StockIssuedDuringPeriodSharesStockOptionsExercisedIncludesRestrictedStockUnitsNetOfTaxWithholding

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
Value	8000.0	183000.0	0	57000.0	54000.0	137000.0	38000.0	79000.0	13000.0	83000.0	31000.0	2000.0	19000.0	111000.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercisedIncludesRestrictedStockUnitsNetOfTaxWithholding	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

ecpg:StockIssuedDuringPeriodValueStockOptionsExercisedIncludesRestrictedStockUnitsNetofTaxWithholdings

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	215000.0	-5431000.0	154000.0	-1605000.0	-150000.0	-4713000.0	-1178000.0	-2266000.0	521000.0	-1949000.0	-576000.0	-18000.0	435000.0	-2350000.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedIncludesRestrictedStockUnitsNetofTaxWithholdings	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:StockIssuedDuringPeriodValueStockOptionsExercisedIncludesRestrictedStockUnitsNetofTaxWithholdings 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
Value	215000.0	-5433000.0	154000.0	-1605000.0	-151000.0	-4714000.0	-1178000.0	-2267000.0	521000.0	-1950000.0	-576000.0	-18000.0	435000.0	-2351000.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedIncludesRestrictedStockUnitsNetofTaxWithholdings	100.0	100.0	100.0	100.0	100.7	100.0	100.0	100.0	100.0	100.1	100.0	100.0	100.0	100.0

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
Value	0	2000.0	0	0	1000.0	1000.0	0	1000.0	0	1000.0	0	1000.0	0	1000.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedIncludesRestrictedStockUnitsNetofTaxWithholdings	0.0	-0.0	0.0	-0.0	-0.7	-0.0	-0.0	-0.0	0.0	-0.1	-0.0	-5.6	0.0	-0.0

ecpg:StockRepurchasedDuringPeriodPricePerShare

Period End	2021-03-31
Value	39.37
Percentage of StockRepurchasedDuringPeriodPricePerShare	100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts

ecpg:A2021ConvertibleNotes, us-gaap:ConvertibleNotesPayable

Period End	2020-12-31
Value	0
Percentage of AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	0.0

ecpg:A2022ConvertibleNotes, us-gaap:ConvertibleNotesPayable

Period End	2020-12-31
Value	0
Percentage of AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	0.0

ecpg:A2025ConvertibleNotes, us-gaap:ConvertibleNotesPayable

Period End	2020-12-31	2020-09-30	2020-06-30	2020-03-31
Value	0	0	0	224000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	0.0	0.0	0.0	0.0

us-gaap:AmortizationOfDebtDiscountPremium us-gaap:LongtermDebtType

us-gaap:AmortizationOfDebtDiscountPremium

ecpg:ConvertibleNotesAndExchangeableNotes

Period End	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30
Value	2.424	2.382	3.095	3.044	3.01	3.405
Percentage of AmortizationOfDebtDiscountPremium	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect

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	15	4.276	2.824	-121.468	105	5.788	-7.671	9.591	7.686	13	-43.226	21	-23.404	1.179
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	100.0	100.0	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:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths us-gaap:DerivativeInstrumentRisk

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

us-gaap:CurrencySwap

Period End	2021-06-30	2021-03-31	2020-12-31
Value	-200000.0	4600000.0	800000.0
Percentage of CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	100.0	100.0	100.0

us-gaap:InterestRateCap

Period End	2021-06-30	2021-03-31	2020-12-31
Value	100000.0	600000.0	900000.0
Percentage of CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	-50.0	13.0	112.5

us-gaap:InterestRateSwap

Period End	2021-06-30	2021-03-31	2020-12-31
Value	-2200000.0	6400000.0	400000.0
Percentage of CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	1100.0	139.1	50.0

us-gaap:CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	328	338	339	342	335	357	329	316	312	311	298	295	292	281	286	283	272	251	249	159	267	270	272	265	270	264	255	251	248	237	226	225	152	140	139	140	138	126	116	115	111	105	95	93	91
Percentage of CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:DebtInstrumentConvertibleConversionRatio1 us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentConvertibleConversionRatio1

ecpg:A2021ConvertibleNotes, us-gaap:ConvertibleNotesPayable

Period End	2020-12-31
Value	0
Percentage of DebtInstrumentConvertibleConversionRatio1	0.0

ecpg:A2022ConvertibleNotes, us-gaap:ConvertibleNotesPayable

Period End	2021-06-30	2021-03-31	2020-12-31
Value	0	0.021947	0
Percentage of DebtInstrumentConvertibleConversionRatio1	0.0	0.0	0.0

ecpg:A2023ExchangeableNotes, ecpg:ExchangeableNotesPayable

Period End	2021-06-30	2021-03-31	2020-12-31
Value	0	0.022409	0
Percentage of DebtInstrumentConvertibleConversionRatio1	0.0	0.0	0.0

ecpg:A2025ConvertibleNotes, us-gaap:ConvertibleNotesPayable

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31
Value	0	0.025	0	0	0	0.025
Percentage of DebtInstrumentConvertibleConversionRatio1	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:DebtInstrumentInterestRateDuringPeriod us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:DebtInstrumentInterestRateDuringPeriod

us-gaap:RevolvingCreditFacility, ecpg:RestatedCreditAgreement

Period End	2020-09-30	2020-06-30	2019-09-30	2019-06-30
Value	3.63	0.0352	5.25	0.0547
Percentage of DebtInstrumentInterestRateDuringPeriod	100.0	100.0	100.0	100.0

us-gaap:DebtInstrumentPeriodicPaymentPrincipal us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentPeriodicPaymentPrincipal

ecpg:A2017SeniorSecuredNotes, us-gaap:SeniorNotes

Period End	2020-12-31
Value	0.0
Percentage of DebtInstrumentPeriodicPaymentPrincipal	0.0

ecpg:EncorePrivatePlacementNotes, us-gaap:NotesPayableOtherPayables

Period End	2021-06-30	2021-03-31
Value	0.0	9.8
Percentage of DebtInstrumentPeriodicPaymentPrincipal	0.0	0.0

us-gaap:DepreciationAndAmortization

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	12	11	11	10	10	10	11	10.0	9.741	9.995	9.996	9.873	10	10	14	8.522	8.672	8.625	8.74	8.032	8.235	9.861	9.276	8.235	8.084	8.35	8.07	6.933	6.829	6.117	5.02	4.523	2.158	1.846	1.647	1.533	1.42	1.363	1.309	1.194	1.105	1.053	0.958	0.816	0.752
Percentage of DepreciationAndAmortization	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:DerivativeCostOfHedge us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DerivativeCostOfHedge

ecpg:A2021ConvertibleNotes, us-gaap:ConvertibleNotesPayable

Period End	2020-12-31
Value	0.0
Percentage of DerivativeCostOfHedge	0.0

ecpg:A2023ExchangeableNotes, ecpg:ExchangeableNotesPayable

Period End	2021-06-30	2021-03-31	2020-12-31
Value	0.0	17	0.0
Percentage of DerivativeCostOfHedge	0.0	0.0	0.0

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:OtherExpense

Period End	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2019-06-30	2018-12-31	2018-09-30	2018-06-30
Value	0	-407000.0	2028000.0	1943000.0	-2696000.0	-436000.0	173000.0	0	-2281000.0	-6174000.0
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	0.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	100.0

us-gaap:EarlyRepaymentOfSeniorDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:EarlyRepaymentOfSeniorDebt

ecpg:Cabot2023Notes, us-gaap:SecuredDebt

Period End	2020-12-31
Value	391
Percentage of EarlyRepaymentOfSeniorDebt	100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

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	-1.821	-8.862	16	-2.349	0.255	-9.924	13	8.521	-6.217	-3.346	-4.005	1.889	-12.077	3.82
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	100.0	100.0	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:EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance

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	-1.3	2.0	-0.002	-0.665	-0.026	0.019	0.026	0.019	0.014	0.181	0.166	0.142
Percentage of EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	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:EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate

Period End	2020-09-30	2013-09-30	2012-09-30
Value	-3.5	-0.04	-0.005
Percentage of EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	100.0	100.0	100.0

us-gaap:EffectiveIncomeTaxRateReconciliationNondeductibleExpense

Period End	2020-12-31	2020-09-30	2020-03-31	2019-03-31	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
Value	-0.2	4.2	-0.017	0.001	-0.005	0.004	0.1	-0.007	0.003	0.008	0.114	0.003	0.004	0.008	0.086	0.017	0.032	0.002	0.002	0.057	0.035	0.023	0.011	0.011	0.005	0	0.001	0.013
Percentage of EffectiveIncomeTaxRateReconciliationNondeductibleExpense	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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

us-gaap:EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent

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	2013-06-30	2013-03-31	2012-06-30
Value	-1.2	0.393	0.003	-0.033	-0.009	0.025	0.008	-0.005	0.008	0.027	-0.01	-0.013	0.008	0	0.001	0.009	0.074	-0.001	0.001	-0.046	0.033	-0.008	0.006	0	-0.024	-0.106	-0.008	0.007	-0.012	0	0	0	0.012
Percentage of EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	100.0	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	0.0	100.0	100.0	100.0	100.0	100.0	0.0	0.0	0.0	100.0

us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes

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	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30
Value	0.2	2.7	0.025	-0.156	-0.035	0.053	0.036	0.025	-0.014	0.017	0.015	0.014	-0.028	0.033	0.032	0.033	0.001	-0.022	0.062	0.062	-0.056	-0.044	0.069	0.082	0.024	0.058	0.058	0.058	0.006	0.052	0.066	0.023	0	0.023	0.023	0.023	0.001	0.022	0.025
Percentage of EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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

us-gaap:ExtinguishmentOfDebtAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:ExtinguishmentOfDebtAmount

ecpg:A2017SeniorSecuredNotes, us-gaap:SeniorNotes

Period End	2020-09-30
Value	103
Percentage of ExtinguishmentOfDebtAmount	100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome us-gaap:FairValueByLiabilityClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome

ecpg:ContingentConsideration

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	-9000.0	-26000.0	102000.0	25000.0	0	4000.0	7000.0	-104000.0	-193000.0	144000.0	-168000.0	424000.0	-499000.0	36000.0	-999000.0	688000.0	-167000.0	-41000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome	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:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases us-gaap:FairValueByLiabilityClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases

ecpg:ContingentConsideration

Period End	2020-12-31
Value	0.195
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases	100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements us-gaap:FairValueByLiabilityClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements

ecpg:ContingentConsideration

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	57000.0	56000.0	53000.0	0	0	35000.0	2000.0	3553000.0	46000.0	85000.0	503000.0	-464000.0	0	232000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	100.0	100.0	100.0	0.0	0.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0

us-gaap:FinancingInterestExpense

Period End	2020-12-31	2019-12-31	2019-09-30	2018-12-31	2018-09-30
Value	31	0.027	0.0	11	0.0
Percentage of FinancingInterestExpense	100.0	100.0	0.0	100.0	0.0

us-gaap:FinancingReceivablePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2020-01-01
Value	350	374	302	507	371	521	79028
Percentage of FinancingReceivablePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:FinancingReceivablePurchasedWithCreditDeteriorationAmountAtParValue

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2020-01-01
Value	1151	1328	1036	1782	1305	1703	214889
Percentage of FinancingReceivablePurchasedWithCreditDeteriorationAmountAtParValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31
Value	142	170	127	170	147	214
Percentage of FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:FinancingReceivablePurchasedWithCreditDeteriorationDiscountPremium

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2020-01-01
Value	658	784	605	1104	786	967	132533
Percentage of FinancingReceivablePurchasedWithCreditDeteriorationDiscountPremium	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:GainLossOnSaleOfBusiness us-gaap:StatementScenario

us-gaap:GainLossOnSaleOfBusiness

srt:ScenarioForecast

Period End	2021-09-30
Value	-15000000.0
Percentage of GainLossOnSaleOfBusiness	100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

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	2.897	5.208	40	28	-1.277	-44.884	52	-23.26	-17.357	14
Percentage of GoodwillForeignCurrencyTranslationGainLoss	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30
Value	-5.731	-27.215	-8.841	-0.224	19	-46.476	-18.642	0.258	23	-67.775	21	-12.605	42	-35.539	11	-6.731	13	-16.095	26	3.09	-13.213	-14.023	0.384	42	15	-16.338	-14.329	22	26	-24.446	24	-4.209	5.801	-2.98	2.392	-3.524	4.469	0.853	2.275	1.853	-0.391	-0.45	5.696	-1.903
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	2020-12-31	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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30
Value	2.747	28	-16.467	-52.974	26	14	-4.438	15	-6.322	-30.247	2.865	-1.131	24	-2.245	-42.264	-4.824	5.129	15	27	-7.745	-13.564	18	10	-22.128	-29.814	6.166	19	11	-12.161	3.123	25	-6.226	-23.873	4.314	15	-1.952	-8.585	2.13	3.072	3.399	-8.413	8.437	1.033	0.212
Percentage of IncreaseDecreaseInAccruedIncomeTaxesPayable	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:IncreaseDecreaseInOtherOperatingAssets

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30
Value	-15.29	3.816	5.287	-2.35	-8.54	-3.377	20	-21.676	-5.014	-18.725	16	6.171	7.555	5.811	-15.993	14	3.538	2.413	27	-8.238	1.899	-1.233	0.481	19	6.79	15	-0.966	-7.303	8.588	15	12	-9.149	6.872	1.63	0.186	0.318	-0.624	0.326	-0.671	-1.741	-1.586	1.819	0.627	0.802
Percentage of IncreaseDecreaseInOtherOperatingAssets	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:IncrementalCommonSharesAttributableToConversionOfDebtSecurities

Period End	2021-06-30	2018-12-31	2018-09-30	2018-06-30	2017-12-31	2017-09-30	2017-06-30	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	200000.0	0	0	0	-57000.0	454000.0	248000.0	0	0	0	0	-175000.0	0	838000.0	874000.0	-36000.0	1043000.0	1043000.0	1461000.0	297000.0	805000.0	40000.0	0
Percentage of IncrementalCommonSharesAttributableToConversionOfDebtSecurities	100.0	0.0	0.0	0.0	100.0	100.0	100.0	0.0	0.0	0.0	0.0	100.0	0.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

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	2011-12-31	2011-09-30	2011-06-30
Value	307000.0	363000.0	13000.0	342000.0	147000.0	0	47000.0	319000.0	201000.0	158000.0	-32000.0	254000.0	259000.0	360000.0	41000.0	271000.0	160000.0	211000.0	1000.0	0	132000.0	318000.0	-12000.0	0	196000.0	369000.0	-128000.0	410000.0	651000.0	906000.0	10000.0	843000.0	849000.0	968000.0	-9000.0	976000.0	906000.0	961000.0	-25000.0	966000.0	1177000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	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	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	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:InterestExpenseDebtExcludingAmortization us-gaap:LongtermDebtType

us-gaap:InterestExpenseDebtExcludingAmortization

ecpg:ConvertibleNotesAndExchangeableNotes

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
Value	3.972	4.923	5.129	5.13	5.799	5.799	6.183	6.754
Percentage of InterestExpenseDebtExcludingAmortization	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:LaborAndRelatedExpense

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	2011-12-31	2011-09-30
Value	97	96	98	95	90	93	91	96	96	91	93	95	90	89	94	77	75	68	68	67	75	69	70	64	67	67	62	61	64	58	50	52	32	28	28	25	25	22	20	20
Percentage of LaborAndRelatedExpense	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:LineOfCreditFacilityInterestRateDuringPeriod us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:LineOfCreditFacilityInterestRateDuringPeriod

ecpg:CabotCreditFacility, us-gaap:RevolvingCreditFacility

Period End	2020-09-30	2019-09-30
Value	3.06	3.71
Percentage of LineOfCreditFacilityInterestRateDuringPeriod	100.0	100.0

ecpg:GlobalSeniorSecuredRevolvingCreditFacility, us-gaap:RevolvingCreditFacility

Period End	2020-09-30
Value	3.25
Percentage of LineOfCreditFacilityInterestRateDuringPeriod	106.2

us-gaap:LitigationSettlementAmountAwardedToOtherParty us-gaap:LitigationCase

us-gaap:LitigationSettlementAmountAwardedToOtherParty

ecpg:CFPBStipulatedJudgement

Period End	2020-10-15
Value	15
Percentage of LitigationSettlementAmountAwardedToOtherParty	100.0

us-gaap:LongTermDebtWeightedAverageInterestRateOverTime us-gaap:DebtInstrument

us-gaap:LongTermDebtWeightedAverageInterestRateOverTime

ecpg:CabotSecuritisationSeniorFacility

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	2017-09-30
Value	3.11	3.11	-0.05	3.12	0.0314	0.0352	0	0.0375	0.0375	0.0376	0.0004	0.0356	0.0335	0.0335	0.031
Percentage of LongTermDebtWeightedAverageInterestRateOverTime	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

us-gaap:MinorityInterestDecreaseFromRedemptions

Period End	2021-06-30	2020-12-31	2020-09-30	2018-12-31	2018-09-30	2018-06-30	2018-03-31
Value	5.556	0.198	3.624	0.0	9.626	0.0	-3.424
Percentage of MinorityInterestDecreaseFromRedemptions	100.0	100.0	100.0	0.0	100.0	0.0	100.0

us-gaap:MinorityInterestDecreaseFromRedemptions us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

Period End	2021-06-30	2020-12-31	2020-09-30	2018-09-30	2018-06-30	2018-03-31
Value	2.669	-4.59	2.196	3.424	0.0	-3.424
Percentage of MinorityInterestDecreaseFromRedemptions	48.0	-2318.2	60.6	35.6	0.0	100.0

us-gaap:NoncontrollingInterest

Period End	2021-06-30	2020-12-31	2020-09-30	2018-12-31	2018-09-30
Value	2.887	0.0	1.428	0.0	9.626
Percentage of MinorityInterestDecreaseFromRedemptions	52.0	0.0	39.4	0.0	100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest

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	-1000.0	1000.0	-4000.0	15000.0	-1000.0	-3000.0	9000.0	51000.0	7000.0	427000.0	-5667000.0	-1293000.0	-371000.0	1783000.0	-154000.0	594000.0	-1841000.0	3250000.0	-20980000.0	-115000.0	1260000.0	-338000.0	-194000.0	-2308000.0	930000.0	-1582000.0	-2567000.0	-1372000.0	618000.0	-148000.0	-1235000.0	2633000.0	0	0
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax

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	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
Value	3.947	2.89	49	30	-2.032	-61.038	56	-31.864	-8.845	7.58	-3.638	9.712	7.824	14	-21.787	-11.383	-23.834	-10.578	-26.889	-14.11	8.426	-22.649	-4.441	-7.529	3.525	0.149	3.835	4.648	-0.583	-0.114	0.472
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

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
Value	5.5	4.273	52	31	-1.468	-64.592	57	-32.494
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome

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
Value	5.501	4.272	52	31	-1.467	-64.589	57	-32.545
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	100.0	100.0	100.0	100.0	99.9	100.0	100.0	100.2

us-gaap:NoncontrollingInterest

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
Value	-0.001	0.001	-0.004	0.015	-0.001	-0.003	0.009	0.051
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-0.0	0.0	-0.0	0.0	0.1	0.0	0.0	-0.2

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax

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	2017-09-30	2017-06-30
Value	1.553	1.383	3.033	0.125	0.564	-3.554	1.103	-0.63	-2.711	-2.03	-3.432	-0.868	-0.786	-0.829	-0.161	0.998
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	100.0	100.0	100.0	100.0	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:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:CurrencySwap, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, ecpg:InterestExpenseOtherIncomeExpense

Period End	2021-06-30	2021-03-31	2020-09-30
Value	3.507	-18.329	-6.779
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	225.8	-1325.3	-5423.2

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, ecpg:SalariesAndEmployeeBenefits

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	2018-09-30	2018-06-30
Value	0.0	0.0	0.048	-0.389	0.032	-0.323	0.456	0.935	-0.916	-0.967
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	0.0	0.0	8.5	10.9	2.9	51.3	-16.8	-46.1	105.5	123.0

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, us-gaap:GeneralAndAdministrativeExpense

Period End	2020-09-30	2020-06-30	2020-03-31	2019-09-30	2019-06-30	2019-03-31	2018-09-30	2018-06-30
Value	0.0	0.001	-0.045	-0.048	0.069	-0.078	-0.13	-0.076
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	0.0	0.2	1.3	7.6	-2.5	3.8	15.0	9.7

us-gaap:InterestRateCap, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, 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	2018-09-30	2018-06-30
Value	-0.127	0.195	-0.246	-0.624	-0.735	-1.396	0.105	-0.145	-0.14	-1.572	0.0	0.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-8.2	14.1	-8.1	-499.2	-130.3	39.3	9.5	23.0	5.2	77.4	-0.0	-0.0

us-gaap:InterestRateSwap, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, 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	2018-09-30	2018-06-30
Value	-0.037	-0.011	-0.036	-0.14	-0.558	-6.707	0.835	-0.8	-4.296	-2.086	0.003	-0.021
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-2.4	-0.8	-1.2	-112.0	-98.9	188.7	75.7	127.0	158.5	102.8	-0.3	2.7

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax

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	2017-09-30	2017-06-30
Value	2055000.0	1761000.0	4219000.0	118000.0	948000.0	-5051000.0	1532000.0	-799000.0	-3560000.0	-2202000.0	-4352000.0	-1152000.0	-1485000.0	-669000.0	-264000.0	963000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	100.0	100.0	100.0	100.0	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:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax

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	2017-09-30	2017-06-30
Value	502000.0	378000.0	1186000.0	-7000.0	384000.0	-1497000.0	429000.0	-169000.0	-849000.0	-172000.0	-920000.0	-284000.0	-699000.0	160000.0	-103000.0	-35000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	100.0	100.0	100.0	100.0	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:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax

us-gaap:CurrencySwap, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, ecpg:InterestExpenseOtherIncomeExpense

Period End	2021-06-30	2021-03-31	2020-09-30
Value	3.665	-17.528	-5.1
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	100.0	100.0	100.0

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, ecpg:SalariesAndEmployeeBenefits

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	2018-09-30	2018-06-30
Value	0.0	0.0	-0.078	0.127	0.2	0.198	0.08	-0.095	0.095	0.434
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	0.0	-0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, us-gaap:GeneralAndAdministrativeExpense

Period End	2020-09-30	2020-06-30	2020-03-31	2019-09-30	2019-06-30	2019-03-31	2018-09-30	2018-06-30
Value	0.0	-0.006	0.017	0.027	0.013	-0.084	0.011	0.035
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:InterestRateCap, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, 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	2018-09-30	2018-06-30
Value	-0.109	-0.107	-0.105	-0.103	-0.096	-2.542	0.146	0.0	0.0	0.0	0.0	0.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-3.0	0.6	0.0	2.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:InterestRateSwap, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, 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	2018-09-30	2018-06-30
Value	-2.268	-2.271	-2.335	-2.458	-2.012	-1.088	-0.954	-0.742	-0.444	-0.42	0.004	0.008
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-61.9	13.0	0.0	48.2	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:OtherCostAndExpenseOperating

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30	2010-06-30
Value	28	28	25	28	28	27	23	25	29	29	31	30	39	33	28	25	24	26	25	24	24	26	25	23	23	25	21	22	22	26	20	19	13	13	10	14	12	12	9.619	10	9.191	10	8.734	9.512	9.027
Percentage of OtherCostAndExpenseOperating	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:OtherNoncashIncomeExpense

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	-4654000.0	-4749000.0	-914000.0	-10598000.0	-6218000.0	-5909000.0	19264000.0	-7816000.0	-9604000.0	-6629000.0	9709000.0	-15656000.0	-1858000.0	-12939000.0	-10578000.0	-3789000.0	-9643000.0	-11666000.0	-2066000.0	-9315000.0	-9709000.0	-9533000.0	-10290000.0	-9019000.0	-10631000.0	-7805000.0	-8391000.0	-7015000.0
Percentage of OtherNoncashIncomeExpense	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:OtherOperatingActivitiesCashFlowStatement

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	7.075	4.931	-8.209	19	2.762	2.161	-8.694	4.488	9.919	4.081	2.674	-2.234	-8.798	1.342
Percentage of OtherOperatingActivitiesCashFlowStatement	100.0	100.0	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:PaymentsForProceedsFromOtherInvestingActivities

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	-11028000.0	6151000.0	-16252000.0	1740000.0	-6417000.0	-3414000.0	-5226000.0	-4948000.0	1372000.0	1980000.0	-4745000.0	-5166000.0	-395000.0	-1239000.0	-6639000.0	2404000.0	-3502000.0	-1057000.0	-1994000.0	3502000.0	-2311000.0	-1191000.0	1134000.0	-1886000.0	-1590000.0	298000.0	3202000.0	1987000.0	0	0	-370000.0	50000.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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

us-gaap:PaymentsOfDebtIssuanceCosts

Period End	2020-09-30
Value	49
Percentage of PaymentsOfDebtIssuanceCosts	100.0

us-gaap:PaymentsOfFinancingCosts

Period End	2020-12-31	2019-12-31	2019-09-30	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	2011-12-31	2011-09-30	2010-12-31	2010-09-30
Value	33	2.809	0.789	5.136	5.053	1.297	0.09	9.062	16	0.673	2.742	28	0.816	1.539	1.395	10	0.742	2.295	4.279	4.83	0.598	0.451	14	0.055	5.306	9.506	2.34	10	0.213	0.005	0.021	0.0	1.588
Percentage of PaymentsOfFinancingCosts	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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

us-gaap:PaymentsToAcquireFinanceReceivables

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2010-09-30
Value	139	167	126	167	141	209	278	257	241	258	249	248	352	280	306	274	241	222	194	195	236	280	199	193	213	143	196	191	217	257	93	55	41	58	153	47	230	130	136	65	93	90	119	77
Percentage of PaymentsToAcquireFinanceReceivables	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:ProceedsFromCollectionOfFinanceReceivables

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
Value	284	268	197	197	172	169	169	183	203	201	194	199	208	206	159	178	181	189	151	156	170	180	147	153	170	164	145	162	163	161	128	157	130	130	93	106
Percentage of ProceedsFromCollectionOfFinanceReceivables	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:ProceedsFromIssuanceOfSeniorLongTermDebt

Period End	2020-12-31	2020-09-30	2019-12-31	2019-09-30	2018-12-31	2018-09-30	2017-12-31	2016-12-31	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	2012-09-30	2012-06-30	2011-12-31	2011-09-30	2010-12-31
Value	902	410	-5.939	0.0	0.0	0.0	0.0	442	332	0.0	0.0	0.0	0.0	0.0	0.0	288	0.0	151	75	75	0.0	0.0	0.0
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt	100.0	100.0	100.0	0.0	0.0	0.0	0.0	100.0	100.0	0.0	0.0	0.0	0.0	0.0	0.0	100.0	0.0	100.0	100.0	100.0	0.0	0.0	0.0

us-gaap:ProceedsFromLongTermLinesOfCredit

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	2011-12-31	2011-09-30	2010-12-31	2010-09-30
Value	84	273	124	1416	107	171	122	158	126	196	175	340	248	177	506	597	131	199	130	167	102	185	170	165	603	134	349	313	222	457	137	8.0	480	33	118	7.0	339	43	60	6.0	13	58
Percentage of ProceedsFromLongTermLinesOfCredit	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:ProceedsFromPaymentsForOtherFinancingActivities

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	2012-12-31
Value	-4790000.0	-6844000.0	-8422000.0	-28766000.0	6537000.0	-10171000.0	-9886000.0	-6410000.0	1811000.0	-2912000.0	-990000.0	3292000.0	-5353000.0	-1765000.0	-4829000.0	1743000.0	-4078000.0	-876000.0	-4967000.0	-2291000.0	-4994000.0	-2785000.0	4310000.0	3458000.0	-2165000.0	-3592000.0	6852000.0	-872000.0	1451000.0	408000.0	525000.0	-463000.0	-4629000.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:RepaymentsOfConvertibleDebt

Period End	2021-06-30	2021-03-31	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	2016-03-31
Value	0.0	161	0.0	0.0	0.0	0.0	0.0	0.0	65	0.0	0.0	60	0.0	0.0	0.0	0.0
Percentage of RepaymentsOfConvertibleDebt	0.0	100.0	0.0	0.0	0.0	0.0	0.0	0.0	100.0	0.0	0.0	100.0	0.0	0.0	0.0	0.0

us-gaap:RepaymentsOfLongTermDebtAndCapitalSecurities us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:RepaymentsOfLongTermDebtAndCapitalSecurities

ecpg:A2017SeniorSecuredNotes, us-gaap:SeniorNotes

Period End	2020-09-30
Value	103
Percentage of RepaymentsOfLongTermDebtAndCapitalSecurities	100.0

us-gaap:RepaymentsOfLongTermLinesOfCredit

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	2011-12-31	2011-09-30	2010-12-31	2010-09-30
Value	275	235	239	1736	148	167	145	164	156	119	105	173	205	87	195	599	115	258	171	136	72	235	425	112	229	124	305	146	285	447	138	263	136	91	126	92	36	34	16	40	-33.644	61
Percentage of RepaymentsOfLongTermLinesOfCredit	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:RepaymentsOfNotesPayable us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:RepaymentsOfNotesPayable

ecpg:A2017SeniorSecuredNotes, us-gaap:SeniorNotes

Period End	2020-09-30
Value	10
Percentage of RepaymentsOfNotesPayable	100.0

us-gaap:RepaymentsOfSeniorDebt

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	329	9.77	881	119	16	16	10	0.0	460	0.0	90	0.0	0.0	1.029	1.029	197	3.087	3.087	338	3.087	7.506	3.75	3.75	3.75	3.75	3.75	3.75	3.75	3.75	3.75	3.75	3.75	3.75	2.5
Percentage of RepaymentsOfSeniorDebt	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	0.0	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	100.0	100.0

us-gaap:StockRepurchasedDuringPeriodShares

Period End	2021-06-30	2021-03-31	2015-05-31	2014-05-31	2013-03-31
Value	605000.0	517860.0	839300.0	400000.0	24000.0
Percentage of StockRepurchasedDuringPeriodShares	100.0	100.0	100.0	100.0	100.0

us-gaap:StockRepurchasedDuringPeriodShares us-gaap:StatementEquityComponents

us-gaap:CommonStock

Period End	2021-06-30	2021-03-31	2013-03-31
Value	605000.0	518000.0	24000.0
Percentage of StockRepurchasedDuringPeriodShares	100.0	100.0	100.0

us-gaap:StockRepurchasedDuringPeriodValue

Period End	2021-06-30	2021-03-31	2015-05-31	2014-05-31	2013-06-30	2013-03-31	2013-01-31	2012-12-31
Value	27	20	33	16	0.0	0.729	50	50
Percentage of StockRepurchasedDuringPeriodValue	100.0	100.0	100.0	100.0	0.0	100.0	100.0	100.0

us-gaap:StockRepurchasedDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

Period End	2021-06-30	2021-03-31	2013-06-30	2013-03-31
Value	27	20	0.0	0.729
Percentage of StockRepurchasedDuringPeriodValue	100.0	100.0	0.0	100.0

us-gaap:CommonStock

Period End	2021-06-30	2021-03-31
Value	0.006	0.005
Percentage of StockRepurchasedDuringPeriodValue	0.0	0.0

us-gaap:StockholdersEquityOther

Period End	2020-09-30	2020-06-30	2019-09-30	2019-06-30
Value	-5264000.0	2632000.0	-3814000.0	-968000.0
Percentage of StockholdersEquityOther	100.0	100.0	100.0	100.0

us-gaap:StockholdersEquityOther us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome

Period End	2020-09-30	2020-06-30	2019-09-30
Value	-5264000.0	2632000.0	-3814000.0
Percentage of StockholdersEquityOther	100.0	100.0	100.0

dei:EntityCommonStockSharesOutstanding

Period End	2021-02-17
Value	31
Percentage of EntityCommonStockSharesOutstanding	100.0

ecpg:ConvertibleNotesPayableNet

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	2012-12-31
Value	564	561	648	645	642	639	626	622	619	616	455	453	450	513	510	508	416	413	411	409	406	404	401	399	397	395	392	390	245	100
Percentage of ConvertibleNotesPayableNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:DebtInstrumentIssuePricePercentageOfParValue us-gaap:DebtInstrument, us-gaap:LongtermDebtType

ecpg:DebtInstrumentIssuePricePercentageOfParValue

ecpg:Encore2028FloatingRateNotes, us-gaap:SecuredDebt

Period End	2020-12-31
Value	99.0
Percentage of DebtInstrumentIssuePricePercentageOfParValue	100.0

ecpg:DeferredTaxAssetsChangeinBasisofBondandLoanCosts

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	1.267	4.194	3.728	7.878	3.007	9.48	10	0.0
Percentage of DeferredTaxAssetsChangeinBasisofBondandLoanCosts	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0

ecpg:DeferredTaxAssetsFinanceLeaseLiability

Period End	2020-12-31	2019-12-31
Value	12	18
Percentage of DeferredTaxAssetsFinanceLeaseLiability	100.0	100.0

ecpg:DeferredTaxLiabilitiesDifferencesInBasisOfBondAndLoanCosts

Period End	2020-12-31	2019-12-31
Value	20	0.057
Percentage of DeferredTaxLiabilitiesDifferencesInBasisOfBondAndLoanCosts	100.0	100.0

ecpg:DeferredTaxLiabilitiesRightOfUseAsset

Period End	2020-12-31	2019-12-31
Value	8.525	14
Percentage of DeferredTaxLiabilitiesRightOfUseAsset	100.0	100.0

ecpg:LeaseLiability

Period End	2020-12-31	2019-12-31	2019-09-30	2019-06-30
Value	98	101	102	117
Percentage of LeaseLiability	100.0	100.0	100.0	100.0

ecpg:LeaseLiabilityPaymentsDue

Period End	2020-12-31
Value	122
Percentage of LeaseLiabilityPaymentsDue	100.0

ecpg:LeaseLiabilityPaymentsDueAfterYearFive

Period End	2020-12-31
Value	37
Percentage of LeaseLiabilityPaymentsDueAfterYearFive	100.0

ecpg:LeaseLiabilityPaymentsDueNextTwelveMonths

Period End	2020-12-31
Value	23
Percentage of LeaseLiabilityPaymentsDueNextTwelveMonths	100.0

ecpg:LeaseLiabilityPaymentsDueYearFive

Period End	2020-12-31
Value	11
Percentage of LeaseLiabilityPaymentsDueYearFive	100.0

ecpg:LeaseLiabilityPaymentsDueYearFour

Period End	2020-12-31
Value	14
Percentage of LeaseLiabilityPaymentsDueYearFour	100.0

ecpg:LeaseLiabilityPaymentsDueYearThree

Period End	2020-12-31
Value	15
Percentage of LeaseLiabilityPaymentsDueYearThree	100.0

ecpg:LeaseLiabilityPaymentsDueYearTwo

Period End	2020-12-31
Value	19
Percentage of LeaseLiabilityPaymentsDueYearTwo	100.0

ecpg:LeaseLiabilityUndiscountedExcessAmount

Period End	2020-12-31
Value	23
Percentage of LeaseLiabilityUndiscountedExcessAmount	100.0

ecpg:LeaseRightOfUseAsset

Period End	2020-12-31	2019-12-31
Value	84	84
Percentage of LeaseRightOfUseAsset	100.0	100.0

ecpg:LitigationSettlementAmountOfRedressAwardedToAffectedConsumers us-gaap:LitigationCase

ecpg:LitigationSettlementAmountOfRedressAwardedToAffectedConsumers

ecpg:CFPBStipulatedJudgement

Period End	2020-10-15
Value	9000.0
Percentage of LitigationSettlementAmountOfRedressAwardedToAffectedConsumers	100.0

ecpg:LitigationSettlementAmountOfRedressPreviouslyVoluntarilyPaid us-gaap:LitigationCase

ecpg:LitigationSettlementAmountOfRedressPreviouslyVoluntarilyPaid

ecpg:CFPBStipulatedJudgement

Period End	2020-10-15
Value	70000.0
Percentage of LitigationSettlementAmountOfRedressPreviouslyVoluntarilyPaid	100.0

ecpg:LongTermDebtAndLeaseObligationsIncludingCurrentMaturitiesGrossOfDebtIssuancesCosts

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2019-12-31
Value	3063	3219	3373	3358	3586
Percentage of LongTermDebtAndLeaseObligationsIncludingCurrentMaturitiesGrossOfDebtIssuancesCosts	100.0	100.0	100.0	100.0	100.0

ecpg:ServiceFeeReceivable

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	22	30	26	26	21	22	27	25	30	35	28	31	24	25	25	26	22	18	15	11	12	13	13	10	11	10	7.864	12	9.329	16	29
Percentage of ServiceFeeReceivable	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

ecpg:StockRepurchaseProgramIncreaseOfAuthorizedAmount

Period End	2021-05-05
Value	250
Percentage of StockRepurchaseProgramIncreaseOfAuthorizedAmount	100.0

ecpg:StockRepurchaseProgramIncreaseOfAuthorizedAmount us-gaap:SubsequentEventType

us-gaap:SubsequentEvent

Period End	2021-05-05
Value	250
Percentage of StockRepurchaseProgramIncreaseOfAuthorizedAmount	100.0

ecpg:UnrecognizedTaxBenefitsIncludingPenaltiesandInterest

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	6.9	8.2	19	22	21	58	44	83	2.6
Percentage of UnrecognizedTaxBenefitsIncludingPenaltiesandInterest	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent

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	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	190	189	215	221	218	168	223	208	218	195	287	274	286	244	284	269	256	224	234	217	217	238	294	239	214	195	231	192	163	124	137	106	76	42	45	43	41	31	29	27	25	26
Percentage of AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:AssetsHeldForSaleNotPartOfDisposalGroupOther

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	37	40	42	40	40	42	46	40	38	31	26	26	24	20	18	27	26	24	21	0.911
Percentage of AssetsHeldForSaleNotPartOfDisposalGroupOther	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:BusinessCombinationContingentConsiderationLiability

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	5.404	2.927	2.957	2.655	0.027	0.027	0.066	0.061	3.819	6.257	6.198	7.417	10
Percentage of BusinessCombinationContingentConsiderationLiability	100.0	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:BusinessCombinationContingentConsiderationLiability us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel3

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	5.404	2.927	2.957	2.655	0.027	0.027	0.066	0.061	3.819	6.257	6.198	7.417	10
Percentage of BusinessCombinationContingentConsiderationLiability	100.0	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:CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet

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	2011-12-31	2011-09-30	2011-06-30	2011-03-31	2010-12-31	2009-12-31
Value	3154	3225	3291	3265	3201	3166	3283	3188	3224	3211	3137	3109	3084	3024	2890	2728	2555	2436	2382	2397	2469	2486	2440	2323	2351	2038	2143	2073	1987	1904	1590	1595	1096	801	873	811	869	741	716	649	657	648	644	526
Percentage of CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31
Value	516	536	553	528	516	478	539
Percentage of CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet	16.4	16.6	16.8	16.2	16.1	15.1	16.4

us-gaap:ConvertibleDebt

Period End	2020-12-31
Value	583
Percentage of ConvertibleDebt	100.0

us-gaap:ConvertibleDebt us-gaap:CumulativeEffectPeriodOfAdoption

srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance

Period End	2020-12-31
Value	583
Percentage of ConvertibleDebt	100.0

us-gaap:ConvertibleDebtFairValueDisclosures us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType

us-gaap:ConvertibleDebtFairValueDisclosures

us-gaap:CarryingReportedAmountFairValueDisclosure, ecpg:ConvertibleNotesAndExchangeableNotes

Period End	2021-06-30	2021-03-31	2020-12-31	2019-12-31
Value	422	422	564	642
Percentage of ConvertibleDebtFairValueDisclosures	100.0	100.0	100.0	100.0

us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:SeniorNotes

Period End	2020-09-30	2019-12-31
Value	561	642
Percentage of ConvertibleDebtFairValueDisclosures	0.0	100.0

us-gaap:EstimateOfFairValueFairValueDisclosure, ecpg:ConvertibleNotesAndExchangeableNotes

Period End	2021-06-30	2021-03-31	2020-12-31	2019-12-31
Value	524	481	622	693
Percentage of ConvertibleDebtFairValueDisclosures	124.1	113.9	110.3	108.0

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorNotes

Period End	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2018-12-31
Value	625	663	567	693	680	553
Percentage of ConvertibleDebtFairValueDisclosures	0.0	0.0	0.0	108.0	0.0	0.0

us-gaap:ConvertibleNotesPayable

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	2013-06-30	2012-12-31
Value	583	583	672	672	672	672	656	656	656	656	483	483	483	548	548	548	448	448	448	448	448	448	448	448	448	448	448	448	287	287	265	115
Percentage of ConvertibleNotesPayable	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent

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	2013-06-30	2013-03-31	2012-12-31
Value	53	53	83	83	83	83	76	76	76	76	62	62	62	62	62	62	61	60	59	58	58	57	56	55	55	54	53	53	46	46	42	14	14
Percentage of DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:DebtInstrumentFaceAmount

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	2017-12-31	2016-12-31	2015-12-31	2014-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31
Value	422	422	583	583	672	672	672	672	656	483	448	448	448	287	265	115	115
Percentage of DebtInstrumentFaceAmount	100.0	100.0	100.0	100.0	100.0	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:DebtInstrumentFaceAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

ecpg:A2025ConvertibleNotes, us-gaap:ConvertibleNotesPayable

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	100	100	100	100	100	100	100	100	0.0
Percentage of DebtInstrumentFaceAmount	23.7	23.7	17.1	17.1	14.9	14.9	14.9	14.9	0.0

ecpg:Cabot2023Notes, us-gaap:SecuredDebt

Period End	2020-12-31	2020-09-30
Value	700	651
Percentage of DebtInstrumentFaceAmount	120.1	111.6

ecpg:Cabot2024FloatingRateNotes, us-gaap:SecuredDebt

Period End	2020-12-31	2020-09-30
Value	487	452
Percentage of DebtInstrumentFaceAmount	83.6	77.5

us-gaap:DebtInstrumentFaceAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

ecpg:TwoThousandTwentyConvertibleSeniorNotes, us-gaap:ConvertibleNotesPayable, us-gaap:SubsequentEvent

Period End	2020-07-01
Value	89
Percentage of DebtInstrumentFaceAmount	0.0

us-gaap:DebtInstrumentFairValue us-gaap:DebtInstrument, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentFairValue

ecpg:CabotSeniorSecuredNotes, us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:SecuredDebt

Period End	2020-09-30	2019-12-31
Value	1536	1127
Percentage of DebtInstrumentFairValue	100.0	100.0

ecpg:CabotSeniorSecuredNotes, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SecuredDebt

Period End	2020-09-30	2020-06-30	2020-03-31	2019-12-31	2019-09-30	2018-12-31
Value	1547	1076	996	1170	1104	1036
Percentage of DebtInstrumentFairValue	100.8	0.0	0.0	103.9	0.0	0.0

us-gaap:DebtInstrumentFairValue us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType

us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:SecuredDebt

Period End	2021-06-30	2021-03-31	2020-12-31	2019-12-31
Value	1659	1613	1642	1127
Percentage of DebtInstrumentFairValue	0.0	0.0	0.0	100.0

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SecuredDebt

Period End	2021-06-30	2021-03-31	2020-12-31	2019-12-31
Value	1732	1683	1684	1170
Percentage of DebtInstrumentFairValue	0.0	0.0	0.0	103.9

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateEffectivePercentage

ecpg:A2025ConvertibleNotes, us-gaap:ConvertibleNotesPayable

Period End	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-09-30
Value	5.0	5.0	0.05	0.05	0.05
Percentage of DebtInstrumentInterestRateEffectivePercentage	100.0	100.0	100.0	100.0	100.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:Range, us-gaap:CreditFacility, us-gaap:SubsequentEventType, us-gaap:VariableRate

srt:Minimum, ecpg:SeniorSecuredCreditFacilities, us-gaap:SubsequentEvent, us-gaap:LondonInterbankOfferedRateLIBOR

Period End	2020-07-09
Value	0.0075
Percentage of DebtInstrumentInterestRateEffectivePercentage	0.0

us-gaap:DebtInstrumentUnamortizedDiscount

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	2013-06-30	2013-03-31	2012-12-31
Value	19	21	24	27	30	33	30	33	36	39	27	30	32	35	37	40	31	34	37	39	41	44	46	48	51	53	55	57	42	43	41	13	14
Percentage of DebtInstrumentUnamortizedDiscount	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:DebtInstrumentUnamortizedDiscount us-gaap:CumulativeEffectPeriodOfAdoption

srt:CumulativeEffectPeriodOfAdoptionAdjustment

Period End	2020-12-31
Value	-19.364
Percentage of DebtInstrumentUnamortizedDiscount	-100.0

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2019-12-31
Value	64	67	91	106	73
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredFinanceCostsGross us-gaap:IncomeStatementLocation

us-gaap:DeferredFinanceCostsGross

ecpg:LossOnExtinguishmentOfDebt

Period End	2020-12-31
Value	15
Percentage of DeferredFinanceCostsGross	100.0

us-gaap:InterestExpense

Period End	2020-12-31	2020-09-30
Value	2.7	17
Percentage of DeferredFinanceCostsGross	18.0	0.0

us-gaap:DeferredFinanceCostsNet

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	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2011-12-31
Value	18	18	37	39	41	40	43	44	47	47	40	44	46	44	39	42	41	32	35	38	45	36	38	39	38	40	43	41	28	29	24	15	14	4.371	4.92	4.293
Percentage of DeferredFinanceCostsNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:DeferredIncomeTaxAssetsNet

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	33	24	24	18	51	27	33
Percentage of DeferredIncomeTaxAssetsNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredIncomeTaxLiabilities

Period End	2020-12-31	2019-12-31	2018-12-31	2013-12-31	2013-09-30	2013-06-30	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2012-03-31	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	45	47	28	7.164	110	104	8.443	8.236	17	15	16	15	16	17	17
Percentage of DeferredIncomeTaxLiabilities	100.0	100.0	100.0	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	2018-12-31	2017-12-31	2016-12-31	2012-12-31	2011-12-31
Value	78	73	88	95	108	14	13
Percentage of DeferredTaxAssetsGross	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

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	43	36	42	46	26	15	12	6.49	0.051
Percentage of DeferredTaxAssetsOperatingLossCarryforwards	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsForeign

Period End	2020-12-31
Value	155
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsForeign	100.0

us-gaap:DeferredTaxAssetsOther

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	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	5.596	1.821	4.825	0.522	1.077	2.372	10	50	33	17	21	24	13	-0.026	-0.026
Percentage of DeferredTaxAssetsOther	100.0	100.0	100.0	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:DeferredTaxAssetsTaxDeferredExpense

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	2011-12-31
Value	12	10	17	14	19	7.899	6.701	5.015	2.957	2.069
Percentage of DeferredTaxAssetsTaxDeferredExpense	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

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	2011-12-31
Value	2787000.0	2882000.0	2796000.0	4777000.0	7549000.0	1301000.0	7143000.0	7250000.0	8888000.0	7266000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssets

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	13	3.68	1.937	18	16	14	10	12
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredTaxLiabilitiesOther

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	2011-12-31
Value	1682000.0	4616000.0	3403000.0	9144000.0	242000.0	46000.0	3533000.0	-2289000.0	-142000.0	-13000.0
Percentage of DeferredTaxLiabilitiesOther	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

Period End	2020-12-31	2019-12-31
Value	793000.0	628000.0
Percentage of DeferredTaxLiabilitiesPrepaidExpenses	100.0	100.0

us-gaap:DerivativeNotionalAmount us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:DerivativeNotionalAmount

us-gaap:CurrencySwap, us-gaap:CashFlowHedging

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	415	410	426	410
Percentage of DerivativeNotionalAmount	100.0	100.0	100.0	100.0

us-gaap:InterestRateCap, us-gaap:CashFlowHedging

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2020-06-30	2020-03-31	2019-12-31
Value	958	951	965	921	883	876	913
Percentage of DerivativeNotionalAmount	230.9	231.8	226.3	224.5	0.0	0.0	0.0

us-gaap:InterestRateSwap, us-gaap:CashFlowHedging

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
Value	186	191	196	200	324	327	331	335
Percentage of DerivativeNotionalAmount	44.9	46.6	46.0	48.8	0.0	0.0	0.0	0.0

us-gaap:DerivativeNotionalAmount us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:DerivativeInstrumentRisk

ecpg:A2020Caps, us-gaap:InterestRateCap

Period End	2021-06-30	2021-03-31	2020-09-30
Value	484	482	452
Percentage of DerivativeNotionalAmount	116.7	117.5	110.2

us-gaap:DerivativeNotionalAmount us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

ecpg:A2019Cap, us-gaap:InterestRateCap, us-gaap:CashFlowHedging

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2019-12-31
Value	474	469	487	469	400
Percentage of DerivativeNotionalAmount	114.3	114.3	114.3	114.3	0.0

ecpg:A2020Caps, us-gaap:InterestRateCap, us-gaap:CashFlowHedging

Period End	2020-12-31
Value	478
Percentage of DerivativeNotionalAmount	112.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

Period End	2020-12-31
Value	15
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions	100.0

us-gaap:EquityMethodInvestments

Period End	2021-06-30	2021-03-31	2020-12-31
Value	17	17	10
Percentage of EquityMethodInvestments	100.0	100.0	100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue us-gaap:FairValueByLiabilityClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue

ecpg:ContingentConsideration

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	2014-12-31
Value	5.404	2.927	2.957	2.655	0.027	0.027	0.066	0.061	3.819	6.257	6.198	7.417	6.993	8.142	10	10	10	2.941	2.531	10	0.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:FinanceLeaseLiability

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	8951000.0	9953000.0	8288000.0	8487000.0	9021000.0	8642000.0	8121000.0	7893000.0	8429000.0
Percentage of FinanceLeaseLiability	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:FinanceLeaseLiabilityPaymentsDue

Period End	2020-12-31
Value	8792000.0
Percentage of FinanceLeaseLiabilityPaymentsDue	100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

Period End	2020-12-31
Value	3674000.0
Percentage of FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

Period End	2020-12-31
Value	241000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearFour	100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

Period End	2020-12-31
Value	1467000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearThree	100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

Period End	2020-12-31
Value	3410000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearTwo	100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

Period End	2020-12-31
Value	504000.0
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount	100.0

us-gaap:FinanceLeaseRightOfUseAsset

Period End	2020-12-31	2019-12-31
Value	12	9.133
Percentage of FinanceLeaseRightOfUseAsset	100.0	100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

Period End	2020-12-31	2019-12-31	2019-03-31
Value	4.6	4.7	0.044
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent	100.0	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

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	2012-12-31	2012-09-30	2012-06-30	2011-12-31
Value	31	29	33	28	25	23	27	25	23	24	28	23	23	22	19	17	15	13	12	11	9.924	8.73	8.994	8.028	7.257	5.735	4.646	3.252	2.386	1.898	-0.929	0.532	0.083	0.055	0.02	5.538
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

ecpg:TradeNameAndOther

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
Value	1.046	1.0	6.002	4.769	4.56	4.543	5.244	4.676	4.969	5.036	5.213	5.995	7.035	7.873	7.024	6.798	6.079	5.435	4.909	4.377	4.015	3.743	3.938	3.502	3.088	2.339	1.709	1.099	0.857	1.025	-0.386	0.256	0.126	0.108	0.083	0.055	0.02
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization	3.3	3.4	17.9	16.6	17.7	19.0	19.0	18.6	20.9	20.8	18.2	26.0	30.5	34.7	36.5	38.7	39.1	39.7	40.8	38.9	40.5	42.9	43.8	43.6	42.6	40.8	36.8	33.8	35.9	54.0	41.6	48.1	0.0	0.0	100.0	100.0	100.0

us-gaap:CustomerRelationships

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	2012-12-31	2011-12-31
Value	28	26	22	19	17	15	18	15	12	13	17	11	10	8.973	6.8	5.562	4.736	3.905	3.22	3.014	2.452	1.881	1.263	1.114	1.001	0.836	0.743	0.583	0.32	0.16	-0.075	0.042	0.083	5.538
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization	88.7	88.4	67.9	69.0	67.2	65.3	66.0	60.9	54.2	55.0	59.4	51.2	44.3	39.6	35.4	31.6	30.4	28.5	26.8	26.8	24.7	21.5	14.0	13.9	13.8	14.6	16.0	17.9	13.4	8.4	8.1	7.9	100.0	100.0

us-gaap:DevelopedTechnologyRights

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	2.545	2.449	4.76	4.125	3.866	3.744	4.124	5.161	5.929	5.87	6.446	5.247	5.818	5.825	5.411	5.214	4.74	4.343	3.891	3.855	3.457	3.106	3.793	3.412	3.168	2.56	2.194	1.57	1.209	0.713	-0.468	0.234
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization	8.0	8.3	14.2	14.4	15.0	15.7	15.0	20.5	24.9	24.2	22.5	22.8	25.2	25.7	28.1	29.7	30.5	31.7	32.4	34.3	34.8	35.6	42.2	42.5	43.7	44.6	47.2	48.3	50.7	37.6	50.4	44.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

Period End	2020-12-31
Value	12
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

Period End	2020-12-31
Value	6746000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

Period End	2020-12-31
Value	6226000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

Period End	2020-12-31
Value	6274000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

Period End	2020-12-31
Value	6361000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

Period End	2020-12-31
Value	6720000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	100.0

us-gaap:FiniteLivedIntangibleAssetsGross

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	2015-03-31	2014-12-31	2014-09-30	2014-06-30	2014-03-31	2013-12-31	2013-09-30	2012-12-31	2012-09-30	2012-06-30	2011-12-31
Value	72	72	78	73	70	70	78	74	80	83	89	87	90	98	94	46	45	41	40	24	26	20	20	24	24	9.051	0.57	0.57	0.57	6.0
Percentage of FiniteLivedIntangibleAssetsGross	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

ecpg:TradeNameAndOther

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
Value	1.587	1.586	6.644	5.437	5.26	5.248	6.299	5.557	7.855	8.079	8.346	9.5	10	14	14	13	13	12	12	10	10	11	11	11	13	9.677	10	4.89	4.904	15	15	2.876	2.06	0.57	0.57	0.57	0.57
Percentage of FiniteLivedIntangibleAssetsGross	2.2	2.2	8.5	7.4	7.5	7.5	8.0	7.4	9.8	9.7	9.3	10.9	12.0	15.0	15.2	29.1	29.2	31.1	31.2	0.0	0.0	0.0	0.0	0.0	0.0	39.5	39.9	24.1	23.8	63.9	63.9	31.8	0.0	0.0	100.0	100.0	100.0

us-gaap:CustomerRelationships

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	2012-12-31	2011-12-31
Value	68	68	66	63	60	60	67	63	65	68	73	71	73	76	73	26	25	21	21	23	24	24	5.716	5.816	5.053	4.979	5.437	6.012	6.225	1.975	1.975	1.494	0.57	6.0
Percentage of FiniteLivedIntangibleAssetsGross	94.2	94.2	85.1	86.5	86.4	86.5	86.0	84.8	81.8	82.3	82.3	82.5	80.9	78.0	77.8	55.9	56.1	52.7	52.7	0.0	0.0	0.0	0.0	0.0	0.0	20.3	20.7	29.6	30.2	8.1	8.1	16.5	100.0	100.0

us-gaap:DevelopedTechnologyRights

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	2.658	2.643	5.048	4.487	4.301	4.257	4.734	5.842	6.728	6.752	7.461	5.71	6.458	6.848	6.683	7.049	6.667	6.64	6.497	8.167	8.234	8.522	8.141	8.26	11	7.887	8.353	7.422	7.519	4.909	4.909	4.681
Percentage of FiniteLivedIntangibleAssetsGross	3.6	3.6	6.4	6.1	6.1	6.1	6.0	7.8	8.4	8.1	8.4	6.6	7.2	7.0	7.0	15.0	14.7	16.1	16.1	0.0	0.0	0.0	0.0	0.0	0.0	32.2	31.9	36.6	36.5	20.1	20.1	51.7

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure

us-gaap:OtherAssets, us-gaap:CurrencySwap, us-gaap:DesignatedAsHedgingInstrument

Period End	2020-12-31
Value	11
Percentage of ForeignCurrencyContractAssetFairValueDisclosure	100.0

us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure

us-gaap:OtherAssets, us-gaap:CurrencySwap, us-gaap:DesignatedAsHedgingInstrument

Period End	2020-12-31
Value	11
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure	100.0

us-gaap:OtherLiabilities, us-gaap:CurrencySwap, us-gaap:DesignatedAsHedgingInstrument

Period End	2021-06-30	2021-03-31	2020-09-30
Value	0.968	5.34	6.686
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure	0.0	0.0	0.0

us-gaap:IncomeTaxReceivable

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2019-12-31	2019-06-30	2019-03-31	2018-12-31	2011-09-30	2011-06-30	2010-12-31
Value	0.791	8.272	35	19	5.822	7.628	11	0.0	3.09	6.324	1.629
Percentage of IncomeTaxReceivable	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	100.0	100.0

us-gaap:InterestRateDerivativeAssetsAtFairValue us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:InterestRateDerivativeAssetsAtFairValue

us-gaap:OtherAssets, us-gaap:InterestRateCap, us-gaap:DesignatedAsHedgingInstrument

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	0.727	0.854	0.659	0.854	1.416	2.15	2.46	0.166	0.311	0.451	2.023
Percentage of InterestRateDerivativeAssetsAtFairValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:InterestRateDerivativeAssetsAtFairValue us-gaap:DerivativeInstrumentRisk

us-gaap:CurrencySwap

Period End	2020-12-31
Value	11
Percentage of InterestRateDerivativeAssetsAtFairValue	1756.9

us-gaap:InterestRateCap

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	0.727	0.854	0.659	0.854	1.416	2.15	2.46	0.166	0.311	0.451	2.023	2.445	3.922
Percentage of InterestRateDerivativeAssetsAtFairValue	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:InterestRateDerivativeAssetsAtFairValue us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CurrencySwap, us-gaap:FairValueInputsLevel2

Period End	2020-12-31
Value	11
Percentage of InterestRateDerivativeAssetsAtFairValue	1756.9

us-gaap:InterestRateCap, us-gaap:FairValueInputsLevel2

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	0.727	0.854	0.659	0.854	1.416	2.15	2.46	0.166	0.311	0.451	2.023	2.445	3.922
Percentage of InterestRateDerivativeAssetsAtFairValue	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:InterestRateDerivativeLiabilitiesAtFairValue us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:InterestRateDerivativeLiabilitiesAtFairValue

us-gaap:OtherLiabilities, us-gaap:InterestRateSwap, us-gaap:DesignatedAsHedgingInstrument

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	2.501	3.847	5.232	6.625	13	14	9.116	10	10	6.967	4.881	0.007
Percentage of InterestRateDerivativeLiabilitiesAtFairValue	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:InterestRateDerivativeLiabilitiesAtFairValue us-gaap:DerivativeInstrumentRisk

us-gaap:CurrencySwap

Period End	2021-06-30	2021-03-31	2020-09-30
Value	0.968	5.34	6.686
Percentage of InterestRateDerivativeLiabilitiesAtFairValue	38.7	138.8	100.9

us-gaap:InterestRateSwap

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	2.501	3.847	5.232	6.625	13	14	9.116	10	10	6.967	4.881	0.007
Percentage of InterestRateDerivativeLiabilitiesAtFairValue	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:InterestRateDerivativeLiabilitiesAtFairValue us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CurrencySwap, us-gaap:FairValueInputsLevel2

Period End	2021-06-30	2021-03-31	2020-09-30
Value	0.968	5.34	6.686
Percentage of InterestRateDerivativeLiabilitiesAtFairValue	38.7	138.8	100.9

us-gaap:InterestRateSwap, us-gaap:FairValueInputsLevel2

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	2.501	3.847	5.232	6.625	13	14	9.116	10	10	6.967	4.881	0.007
Percentage of InterestRateDerivativeLiabilitiesAtFairValue	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:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

Period End	2020-12-31
Value	19
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	100.0

us-gaap:LineOfCredit us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:LineOfCredit

ecpg:TermLoanOne, ecpg:NonExtendedTermLoans, us-gaap:SubsequentEvent

Period End	2020-07-09
Value	8.1
Percentage of LineOfCredit	100.0

us-gaap:RevolvingCreditFacility, ecpg:NonExtendedRevolvingCommitments, us-gaap:SubsequentEvent

Period End	2020-07-09
Value	138
Percentage of LineOfCredit	1704.9

us-gaap:LineOfCredit us-gaap:DebtInstrument

ecpg:CabotSecuritisationSeniorFacility

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
Value	478	350	433	435	464	430	444	456	445	390	383	407	391	349	0.0
Percentage of LineOfCredit	0.0	0.0	0.0	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:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

ecpg:TermLoanOne, ecpg:AmendedRestatedCreditAgreement, us-gaap:SubsequentEvent

Period End	2020-07-09
Value	188
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity	100.0

ecpg:TermLoanOne, ecpg:RestatedCreditAgreement, us-gaap:SubsequentEvent

Period End	2020-07-08
Value	164
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity	0.0

us-gaap:RevolvingCreditFacility, ecpg:AmendedRestatedCreditAgreement, us-gaap:SubsequentEvent

Period End	2020-07-09
Value	1127
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity	597.1

us-gaap:RevolvingCreditFacility, ecpg:RestatedCreditAgreement, us-gaap:SubsequentEvent

Period End	2020-07-08
Value	884
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity	0.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:DebtInstrument

ecpg:CabotSecuritisationSeniorFacility

Period End	2021-06-30	2021-03-31	2020-06-30	2020-03-31	2020-02-18	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	484	482	350	300	0.00035	300	300	300	300	300	300	300	300
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity	0.0	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:LineOfCreditFacilityRemainingBorrowingCapacity us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

ecpg:GlobalSeniorSecuredRevolvingCreditFacility, us-gaap:RevolvingCreditFacility

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	719	529	569	464
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity	100.0	100.0	100.0	100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

Period End	2020-12-31
Value	916
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	211	197	115	35	224
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	100.0	100.0	100.0	100.0	100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

Period End	2020-12-31	2016-12-31	2014-12-31
Value	1008	775	1007
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	100.0	100.0	100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

Period End	2020-12-31	2016-12-31	2014-12-31
Value	511	887	118
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	100.0	100.0	100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

Period End	2020-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	526	1271	417	306	248	283
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

Period End	2020-12-31	2019-12-31	2017-12-31	2016-12-31	2015-12-31	2014-12-31
Value	198	900	203	18	122	56
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

Period End	2020-12-31	2019-12-31
Value	5.0	5.3
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent	100.0	100.0

us-gaap:OtherAssetsMiscellaneous

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	2011-12-31
Value	36	42	55	40	47	51	64	54	61	49	39	37	71	56	51	66	54	52	53	43	37	36	42	30	33	32	24	27	21	9.762	9.3	5.28	3.634	1.832	0.478	1.731	1.959	0.186
Percentage of OtherAssetsMiscellaneous	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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: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	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	2011-12-31	2011-09-30	2011-06-30	2010-12-31
Value	135	149	146	130	126	136	147	145	159	150	33	33	37	33	35	32	29	29	29	27	30	27	60	87	83	87	79	98	99	99	87	6.967	6.269	1.738	2.722	2.132	5.04	5.297	6.661	5.245	4.128	4.342
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:OtherLiabilities us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary

Period End	2021-06-30	2021-03-31	2020-12-31	2020-06-30	2019-12-31
Value	0.011	0.011	0.037	0.003	0.0
Percentage of OtherLiabilities	0.0	0.0	0.0	0.0	0.0

us-gaap:OtherLiabilities us-gaap:CumulativeEffectPeriodOfAdoption

srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance

Period End	2020-12-31	2020-01-01	2019-12-31
Value	145	135	135
Percentage of OtherLiabilities	99.0	0.0	92.0

srt:CumulativeEffectPeriodOfAdoptionAdjustment

Period End	2020-12-31	2019-12-31
Value	-1.45	-11.768
Percentage of OtherLiabilities	-1.0	-8.0

us-gaap:OtherReceivables

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	5.569	12	12	14	12	16	17	8.09	20	26	47	41	7.798	16	18	19	18	18	18	22	19	15	11	9.382	9.119	7.934	7.467	7.666	7.374	8.595	7.962
Percentage of OtherReceivables	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	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	2011-12-31
Value	26	26	26	19	20	22	22	15	19	22	24	24	27	29	27	19	20	20	18	15	22	21	22	33	22	23	21	21	20	24	23	12	12	8.737	6.399	4.607	5.624	5.232
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	100.0	100.0	100.0	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:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization

Period End	2020-12-31	2019-12-31
Value	129	102
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	100.0	100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

Period End	2020-12-31	2019-12-31
Value	127	120
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	100.0	100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization us-gaap:StatementGeographical

country:GB

Period End	2020-12-31	2019-12-31
Value	37	28
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	29.2	23.8

country:US

Period End	2020-12-31	2019-12-31
Value	83	84
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	65.6	70.1

ecpg:OtherForeignCountries

Period End	2020-12-31	2019-12-31
Value	6.549	7.331
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	5.1	6.1

us-gaap:NonUs

Period End	2020-12-31	2019-12-31
Value	43	35
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	34.4	29.9

us-gaap:PurchaseCommitmentRemainingMinimumAmountCommitted

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	277	224	157	259
Percentage of PurchaseCommitmentRemainingMinimumAmountCommitted	100.0	100.0	100.0	100.0

us-gaap:ReceivablesFairValueDisclosure us-gaap:FairValueByMeasurementBasis

us-gaap:ReceivablesFairValueDisclosure

us-gaap:CarryingReportedAmountFairValueDisclosure

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30	2019-12-31
Value	3154	3225	3291	3265	3283
Percentage of ReceivablesFairValueDisclosure	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	2019-12-31
Value	3530	3615	3705	3729	3464
Percentage of ReceivablesFairValueDisclosure	111.9	112.1	112.6	114.2	105.5

us-gaap:RestrictedCash

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31
Value	20	25	21	21	15
Percentage of RestrictedCash	100.0	100.0	100.0	100.0	100.0

us-gaap:SeniorNotes

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
Value	1667	1622	1651	1542	276	292	308	325	325	325	325	325	325	325	326	327	5.145	8.232	11	14	17	25	28	32	36	40	43	47	51	55	58	62	66	70	72
Percentage of SeniorNotes	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:SeniorNotes us-gaap:DebtInstrument, us-gaap:LongtermDebtType

ecpg:A2017SeniorSecuredNotes, us-gaap:SeniorNotes

Period End	2020-12-31	2020-09-30
Value	146	156
Percentage of SeniorNotes	8.9	10.1

ecpg:Cabot2023Notes, us-gaap:SecuredDebt

Period End	2021-06-01	2021-03-31	2020-12-31	2020-09-30	2019-12-31
Value	226	311	309	662	680
Percentage of SeniorNotes	0.0	19.2	18.7	43.0	220.3

ecpg:Cabot2024FloatingRateNotes, us-gaap:SecuredDebt

Period End	2020-09-30	2019-12-31
Value	468	448
Percentage of SeniorNotes	30.4	145.4

ecpg:Encore2025Notes, us-gaap:SecuredDebt

Period End	2021-06-30	2021-03-31	2020-12-31	2020-09-30
Value	415	410	426	410
Percentage of SeniorNotes	24.9	25.3	25.8	26.6

ecpg:Encore2026Notes, us-gaap:SecuredDebt

Period End	2021-06-30	2021-03-31	2020-12-31
Value	414	413	409
Percentage of SeniorNotes	24.9	25.5	24.8

ecpg:Encore2028FloatingRateNotes, us-gaap:SecuredDebt

Period End	2021-06-30	2021-03-31	2020-12-31
Value	492	486	506
Percentage of SeniorNotes	29.5	30.0	30.6

ecpg:Encore2028Notes, us-gaap:SecuredDebt

Period End	2021-06-30
Value	345
Percentage of SeniorNotes	20.7

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

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	2013-03-31	2012-12-31	2012-09-30	2012-06-30	2011-12-31
Value	35.29	33.11	34.43	30.98	32.11	38.71	35.6	31.07	26.0	23.51	23.15	21.63	19.22
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	100.0	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:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31
Value	22.17	22.17	15.21	16.27
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	100.0	100.0	100.0	100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice us-gaap:AwardType

ecpg:PerformanceStockOptions

Period End	2020-12-31	2019-12-31	2018-12-31	2016-12-31
Value	30.95	31.75	31.54	0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	139.6	143.2	207.4	0.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31
Value	154000.0	121000.0	462000.0	1699000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	100.0	100.0	100.0	100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue us-gaap:AwardType

ecpg:PerformanceStockOptions

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31
Value	1206000.0	665000.0	0	2845000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	783.1	549.6	0.0	167.5

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

ecpg:PerformanceStockOptions

Period End	2020-12-31
Value	1206000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice

ecpg:PerformanceStockOptions

Period End	2020-12-31
Value	30.95
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31
Value	154000.0	121000.0	462000.0	1699000.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	100.0	100.0	100.0	100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1 us-gaap:AwardType

ecpg:PerformanceStockOptions

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31
Value	1206000.0	427000.0	0	0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	783.1	352.9	0.0	0.0

us-gaap:StockRepurchaseProgramAuthorizedAmount1

Period End	2021-05-05	2015-08-12	2014-04-24
Value	300	50	50
Percentage of StockRepurchaseProgramAuthorizedAmount1	100.0	100.0	100.0

us-gaap:StockRepurchaseProgramAuthorizedAmount1 us-gaap:SubsequentEventType

us-gaap:SubsequentEvent

Period End	2021-05-05
Value	300
Percentage of StockRepurchaseProgramAuthorizedAmount1	100.0

us-gaap:UndistributedEarningsOfForeignSubsidiaries

Period End	2020-12-31	2020-09-30
Value	71	180
Percentage of UndistributedEarningsOfForeignSubsidiaries	100.0	100.0

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

Period End	2020-12-31	2019-12-31	2018-12-31	2017-12-31	2016-12-31	2015-12-31
Value	200000.0	300000.0	1400000.0	2200000.0	2200000.0	500000.0
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

Period End	2020-12-31	2020-09-30	2019-12-31	2018-12-31	2017-12-31	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	2012-12-31
Value	6.5	7.6	7.6	13	9.9	7.1	7.1	10	10	10	14	16	16	16	12	14	13	1.8
Percentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Line plots across dimensions of each concept

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

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

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
(None,)

us-gaap:LongTermDebt
us-gaap:CreditFacility, us-gaap:LongtermDebtType
('ecpg:GlobalSeniorSecuredRevolvingCreditFacility', None)

us-gaap:LongTermDebt
us-gaap:CreditFacility, us-gaap:LongtermDebtType
(None, 'us-gaap:LineOfCredit')

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

us-gaap:RetainedEarningsAccumulatedDeficit
us-gaap:CumulativeEffectPeriodOfAdoption
(None,)

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

ECPG

Table of contents

Plots across concepts

Tables

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue

Shares Issued

us-gaap:SharesIssued us-gaap:StatementEquityComponents

us-gaap:SharesIssued

us-gaap:CommonStock

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding

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

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense

Interest Expense Debt

us-gaap:InterestExpenseDebt us-gaap:LongtermDebtType

us-gaap:InterestExpenseDebt

ecpg:ConvertibleNotesAndExchangeableNotes

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses

Operating Income Loss

us-gaap:OperatingIncomeLoss