ONTO

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

Current Liabilities

Stockholders Equity

CashFlow

NetCashProvidedByUsedInOperatingActivities

NetCashProvidedByUsedInInvestingActivities

NetCashProvidedByUsedInFinancingActivities

OperatingLeaseLiability

LesseeOperatingLeaseLiabilityPaymentsDue

FiniteLivedIntangibleAssets

InventoryNet

AccountsReceivable

Tables

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
us-gaap:CommonStockValue	▁▁▁▁▁▁█	0.049	0.049	0.049	0.049	0.049	0.049	0.05	NA	0.025	NA	0.025	NA	0.025	0.031	0.024	NA	0.024	0.024	0.024	NA	0.026	0.026	0.025	0.025	0.025	0.025	0.025	0.024	0.024	0.024	0.024	0.024	0.024	0.024	0.024	0.024	0.024	0.023	0.023	0.023	0.023	0.023	0.023	0.023	0.023	0.023	0.023	NA	0.022	NA	NA
us-gaap:CommonStockSharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStock	█████▁█▄▄	49.189	48.957	48.758	48.832	48.724	0.049132	50.184	25.025	24.842959	NA	24.828384	NA	24.534582	24.855	24.372193	NA	24.215562	24.066368	23.890563	NA	24.628722	NA	NA	NA	25.070889	NA	NA	NA	24.224286	NA	NA	NA	23.813729	NA	NA	NA	23.537275	NA	NA	NA	23.250429	NA	NA	NA	23.182771	NA	NA	NA	22.314783	NA	NA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding	█▁	49.701	49.572	NA	49.131	49.014	50.121	43.609	25.305	24.783	25.25	24.843	25.144	24.783	25.449	NA	26.063	24.466	24.442	25.989	NA	NA	25.932	25.906	25.833	NA	25.282	24.927	24.597	NA	24.352	24.285	24.257	NA	24.132	24.22	24.159	NA	23.261	23.138	23.341	NA	23.76	23.877	23.981	NA	23.526	23.442	23.397	NA	23.168	22.847
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic	█▁	49.193	49.0	NA	48.9	48.736	50.121	43.609	25.079	24.529	25.032	24.525	24.863	24.474	25.146	NA	25.655	24.059	23.953	25.463	NA	NA	25.494	25.307	25.133	NA	24.826	24.524	24.308	NA	24.145	24.02	23.866	NA	24.132	23.939	23.711	NA	23.261	23.138	23.341	NA	23.31	23.395	23.349	NA	22.875	22.709	22.568	NA	21.978	21.672
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount		NA	NA	NA	0.004	0.052	NA	NA	0.056	NA	0.052	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0.3	NA	NA	NA	0.41	0.344	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:RestrictedStockUnitsRSU		NA	NA	NA	0.004	0.052	NA	NA	0.056	NA	0.052	NA	0.167	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	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:EarningsPerShareBasic	▇▆▆▅▅▄▃▅▅▅▅▅▅▅▆▅▆▇▆▆▆▅▅▅█▅▅▅▄▅▅▅▄▁▅▅▅▄▄▄▄▅▅▅▄▅▆▆█▆▆	0.71	0.49	0.4	0.17	0.15	-0.09	-0.41	0.26	0.17	0.22	0.16	0.31	0.12	0.32	0.4900000000000002	0.28	0.48	0.74	0.59	0.53	0.41999999999999993	0.23	0.33	0.21	1.08	0.32	0.25	0.14	-0.08000000000000002	0.03	0.06	0.11	-0.18999999999999995	-1.19	0.02	0.07	0.020000000000000018	-0.2	-0.2	-0.24	-0.15999999999999998	0.08	0.19	0.07	-0.030000000000000027	0.33	0.49	0.47	1.19	0.56	0.53
us-gaap:EarningsPerShareDiluted	▇▆▆▅▅▄▃▅▅▅▅▅▅▆▆▅▆▇▆▆▆▅▆▅█▆▅▅▄▅▅▅▄▁▅▅▅▄▄▄▄▅▅▅▅▆▆▆█▆▆	0.71	0.49	0.41000000000000003	0.16	0.15	-0.09	-0.41	0.26	0.17	0.22	0.16	0.3	0.12	0.32	0.47999999999999976	0.28	0.47	0.72	0.58	0.52	0.41999999999999993	0.22	0.32	0.21	1.05	0.31	0.24	0.14	-0.07	0.03	0.06	0.11	-0.18999999999999995	-1.19	0.02	0.07	0.020000000000000018	-0.2	-0.2	-0.24	-0.15000000000000002	0.08	0.19	0.07	-0.020000000000000018	0.32	0.47	0.45	1.1300000000000001	0.53	0.51

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
TTM Greenblatt ROC _ _	█▇▅▅▅▃▁▄▄▄▄▅▄	35.941	27.485	14.711	9.282	7.93	-5.246	-23.359	5.29	5.935	5.418	3.749	7.608	3.325	NA	10.868	NA	14.271	20.784	20.564	35.644	19.162	7.484	10.652	5.508	8.963	9.066	7.336	3.73	-1.041	1.264	2.509	2.241	-3.806	-10.609	0.746	2.016	1.292	-7.242	-6.156	-9.603	-6.538	3.614	4.296	4.106	-0.528	11.746	17.485	17.063	NA	NA	NA

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
us-gaap:ComprehensiveIncomeNetOfTax	█▆▆▅▅▂▁▄▄▄▄▄▄	35.021	22.083	22.816	9.822	10.714	-7.161	-16.83	6.296	3.551	5.956	3.932	7.153	3.675	NA	12.114	NA	11.65	15.172	18.279	11.611	11.252	6.543	9.041	7.288	23.719	8.403	6.615	4.454	-2.308	0.6	1.322	0.858	-6.761	-30.314	0.77	1.806	0.716	-3.392	-4.609	-7.521	-4.111	3.012	3.338	1.949	-1.644	6.836	12.126	10.844	NA	NA	NA
us-gaap:CostOfGoodsAndServicesSold	█▇▇▄▅▇▇▁▂▁▁▁▂	87.931	78.81	79.779	57.604	63.363	77.297	80.971	31.424	34.449	29.6	32.448	28.873	33.312	NA	34.978	NA	32.956	37.713	34.782	32.815	34.232	26.015	30.806	30.867	28.355	28.31	27.342	22.998	21.879	23.459	25.365	26.997	22.356	15.717	25.121	27.427	24.25	23.243	20.072	14.066	18.319	21.786	28.422	30.426	24.157	27.47	28.268	27.22	21.828	24.538	22.829
us-gaap:CostOfRevenue	█▇▇▄▅▇▇▁▂▁▁▁▂	87.931	78.81	79.779	57.604	63.363	77.297	80.971	31.424	34.449	29.6	32.448	28.873	33.312	NA	34.978	NA	32.956	37.713	34.782	32.815	34.232	26.015	30.806	30.867	28.355	28.31	27.342	22.998	21.879	23.459	25.365	26.997	22.356	15.717	25.121	27.427	24.25	23.243	20.072	14.066	18.319	21.786	28.422	30.426	24.157	27.47	28.268	27.22	21.828	24.538	22.829
us-gaap:GeneralAndAdministrativeExpense	▅▄▄▄▄▆█▂▁▂▁▁▁	16.255	15.559	14.889	14.358	15.916	20.147	24.321	10.289	7.784	9.649	7.885	8.758	7.905	NA	8.845	NA	7.744	7.465	7.741	8.182	6.644	6.798	6.591	6.307	6.231	5.975	5.755	5.42	5.543	5.59	5.544	5.767	5.86	5.781	6.001	6.338	5.659	5.424	5.507	5.512	5.107	4.861	5.583	6.081	6.143	5.817	5.442	5.499	4.877	4.801	4.357
us-gaap:GrossProfit	█▇▆▅▆▅▃▃▃▃▃▃▃▃▃▃▃▄▃▃▃▂▃▂▂▂▂▂▂▂▂▂▂▁▂▂▂▁▁▁▁▂▂▂▂▂▃▃▂▂▂	105.456	90.469	75.349	68.888	71.585	62.631	39.587	31.511	38.676	31.911	35.172	32.019	33.788	32.668	42.038	31.454	43.634	50.891	42.421	41.867	43.973	30.66	33.621	28.447	30.804	30.404	28.425	24.491	20.806	22.219	23.264	23.379	17.349	11.416	22.908	24.149	21.909	15.801	14.48	10.486	11.951	22.152	24.759	25.066	21.12	30.799	36.104	34.923	24.302	29.397	28.006
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	█▇▅▅▅▃▁▅▄▄▄▅▄▅▅▅▅▆▆█▆▅▅▄▅▅▅▄▄▄▄▄	35.956	26.602	14.527	8.927	7.418	-4.004	-22.421	6.908	6.154	6.121	4.562	8.795	3.504	10.014	11.642	8.368	14.489	20.57	17.674	35.906	19.402	7.52	10.91	5.466	9.186	9.215	6.887	3.847	-0.997	1.531	2.161	2.873	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:IncomeTaxExpenseBenefit	▇█▁▇▆▆▂▆█▆▆▇▆	0.905	2.489	-5.387	0.836	-0.006	0.4	-4.669	0.348	1.943	0.595	0.632	1.219	0.531	NA	-0.382	NA	2.921	2.895	4.442	22.401	8.604	1.756	2.622	0.114	-17.468	1.332	0.856	0.38	0.816	0.713	0.817	0.317	1.003	17.919	-0.012	0.587	0.308	-3.133	-2.412	-4.182	-2.723	1.356	-0.49	2.011	-0.19	4.694	5.652	5.743	-17.687	1.114	1.19
us-gaap:IncomeTaxesPaidNet	█▇▇▆█▆▅▁	3.181	1.799	1.853	1.099	2.875	0.588	0.219	-4.276	NA	0.095	NA	0.114	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	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:InterestIncomeExpenseNonoperatingNet	▁▁▂▃▄█▆▆	0.304	0.361	0.459	0.544	0.686	1.21	0.999	1.001	NA	0.86	NA	0.806	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	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	█▇▆▅▅▄▂▅▅▅▅▅▄▅▅▅▅▆▆▆▅▅▅▅▇▅▅▅▄▄▄▄▄▁▄▄▄▄▄▄▄▄▅▄▄▅▅▅▇▆▅	35.051	24.113	19.914	8.091	7.424	-4.404	-17.752	6.56	4.211	5.526	3.93	7.576	2.973	8.082	12.024	7.187	11.568	17.675	15.13	13.505	10.798	5.764	8.288	5.352	26.654	7.883	6.031	3.467	-1.813	0.818	1.344	2.556	-4.639	-28.662	0.588	1.595	0.556	-4.554	-4.566	-5.582	-3.647	1.903	4.506	1.703	-0.531	7.619	11.087	10.51	26.128	12.327	11.567
us-gaap:OperatingExpenses	█▇▇▆▇█▇▁▂▁▂▁▂	69.515	62.984	60.638	59.606	63.655	67.877	62.946	26.221	32.741	26.493	31.423	24.411	30.463	NA	31.17	NA	29.363	30.107	26.967	6.223	24.811	23.176	22.969	22.939	21.841	21.338	21.089	20.761	21.847	20.955	20.755	21.138	21.155	22.025	22.162	22.133	20.617	23.043	20.636	20.089	18.489	18.538	20.463	20.96	21.648	19.053	18.619	17.86	15.635	15.579	15.114
us-gaap:OperatingIncomeLoss	█▇▅▅▅▃▁▄▄▄▄▅▄	35.941	27.485	14.711	9.282	7.93	-5.246	-23.359	5.29	5.935	5.418	3.749	7.608	3.325	NA	10.868	NA	14.271	20.784	20.564	35.644	19.162	7.484	10.652	5.508	8.963	9.066	7.336	3.73	-1.041	1.264	2.509	2.241	-3.806	-10.609	0.746	2.016	1.292	-7.242	-6.156	-9.603	-6.538	3.614	4.296	4.106	-0.528	11.746	17.485	17.063	8.667	13.818	12.892
us-gaap:OtherNonoperatingIncomeExpense	▄▁▃▂▁▅▅▇▆▅█▆▆	-0.289	-1.244	-0.643	-0.899	-1.198	0.032	-0.061	0.617	0.257	-0.157	0.828	0.381	0.27	NA	0.85	NA	0.322	-0.166	0.352	-0.787	0.246	0.059	0.274	-0.003	0.23	0.229	-0.394	0.225	0.073	0.346	-0.311	0.704	0.263	-0.057	-0.084	0.252	-0.337	-0.334	-0.637	0.04	0.393	-0.121	-0.049	-0.175	0.083	0.834	-0.47	-0.513	0.109	-0.053	0.222
us-gaap:ProfitLoss	█▇▆▄▄▃▁▄▄▄▄▄▄	35.051	24.113	19.914	8.091	7.424	-4.404	-17.752	6.56	4.211	5.526	3.93	7.576	2.973	NA	12.024	NA	11.568	17.675	16.381	13.505	10.798	5.764	NA	NA	NA	NA	NA	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:ResearchAndDevelopmentExpense	█▆▆▅▆▆▄▁▃▁▃▁▂	25.507	21.964	21.812	19.678	22.167	20.927	16.704	10.455	13.779	10.659	14.098	10.54	12.987	NA	12.778	NA	12.717	12.491	10.202	11.036	10.058	8.825	9.139	8.694	7.996	7.868	7.511	8.068	7.805	8.579	8.157	8.159	8.052	8.037	9.373	8.314	8.019	8.926	8.321	7.447	7.289	7.176	7.644	7.476	5.978	6.045	5.779	5.488	4.872	4.601	4.931
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax	█▇▇▆▇▇▆▅▅▅▅▅▅▅▅▅▅▅▅▅▁▅▅▅▅▅▅▄▄▄▅▅▄▄▅▅▄▄▄▄▄▄▅▅▄▅▅▅▄▅▅	193.387	169.279	155.128	126.492	134.948	139.928	120.558	62.935	73.125	61.511	67.62	60.892	67.1	62.78	77.016	60.432	76.59	88.604	73.096	74.682	-98.103	56.675	64.427	59.314	59.159	58.714	55.767	47.489	42.685	45.678	48.629	50.376	39.705	27.133	48.029	51.576	46.159	39.044	34.552	24.552	30.27	43.938	53.181	55.492	45.277	58.269	64.372	62.143	46.13	53.935	50.835
us-gaap:SellingAndMarketingExpense	█▆▅▆▆▆▆▁▃▂▃▁▄	15.429	13.104	11.272	11.924	11.869	13.071	12.637	5.09	8.465	5.798	8.244	4.726	9.282	NA	9.451	NA	8.902	10.151	9.024	-1.935	8.109	7.553	7.239	7.938	7.614	7.495	7.823	7.249	7.15	6.76	7.029	7.116	6.59	6.389	6.681	7.373	6.826	6.758	6.613	6.932	5.897	6.308	7.041	7.211	6.461	6.862	6.997	6.699	5.498	5.734	5.372

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
us-gaap:Assets	█▆▄▂▁▁▃	1546.493	1503.719	1468.172	1430.715	1416.772	1416.387	1448.58	NA	396.223	NA	391.099	NA	382.325	418.04	375.63	NA	356.452	334.803	312.022	NA	309.699	321.403	312.392	303.536	287.83	265.606	263.555	243.719	235.54	239.136	231.557	226.769	223.236	226.96	253.119	254.717	262.834	251.32	252.025	248.133	259.454	268.648	273.638	273.135	267.221	260.109	250.968	NA	219.896	NA	NA
us-gaap:Liabilities	█▇▅▃▃▂▁	216.93	211.407	203.426	193.032	195.563	190.582	184.554	NA	60.451	NA	62.119	NA	61.939	56.152	62.778	NA	62.377	56.319	51.295	NA	47.316	46.918	47.265	49.623	44.056	48.967	59.555	49.973	48.212	51.337	47.093	44.931	43.699	37.022	36.224	41.447	55.461	47.518	47.771	42.281	43.683	46.397	56.862	57.891	57.229	53.795	54.617	NA	49.047	NA	NA
us-gaap:LiabilitiesAndStockholdersEquity	█▆▄▂▁▁▃	1546.493	1503.719	1468.172	1430.715	1416.772	1416.387	1448.58	NA	396.223	NA	391.099	NA	382.325	418.04	375.63	NA	356.452	334.803	312.022	NA	309.699	321.403	312.392	303.536	287.83	265.606	263.555	243.719	235.54	239.136	231.557	226.769	223.236	226.96	253.119	254.717	262.834	251.32	252.025	248.133	259.454	268.648	273.638	273.135	267.221	260.109	250.968	NA	219.896	NA	NA
us-gaap:StockholdersEquity	███▇▇▇█▁▁	1329.563	1292.312	1264.746	1237.683	1221.209	1225.805	1264.026	385.473	335.772	NA	328.98	NA	320.386	361.888	312.852	NA	294.075	278.484	260.727	NA	262.383	274.485	265.127	253.913	243.774	216.639	204.0	193.746	187.328	187.799	184.464	181.838	179.537	189.938	216.895	213.27	207.373	203.802	204.254	205.852	215.771	222.251	216.776	215.244	209.992	206.314	196.351	NA	170.849	NA	NA

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
us-gaap:AssetsCurrent	█▆▅▃▂▁▂	811.629	754.828	731.661	676.721	644.912	628.519	641.664	NA	278.285	NA	272.179	NA	264.369	350.907	270.881	NA	291.099	269.269	244.429	NA	240.114	249.868	242.083	231.264	216.379	209.22	207.581	187.918	178.114	180.229	170.612	165.305	157.846	158.975	182.895	183.538	190.754	180.295	183.451	179.796	189.314	197.478	202.617	205.279	201.41	212.893	199.653	NA	168.247	NA	NA
us-gaap:CashAndCashEquivalentsAtCarryingValue	█▆█▁▇▁▇	134.218	126.45	136.72	101.606	129.388	101.32	130.673	NA	51.009	NA	94.035	NA	95.212	112.388	110.951	NA	96.103	86.201	65.912	NA	34.899	44.041	42.354	47.417	47.062	37.421	60.032	38.673	38.154	41.561	26.421	27.935	34.676	35.625	37.987	38.833	44.765	43.833	39.102	47.345	62.915	67.464	81.99	95.478	97.699	100.149	91.685	80.171	66.46	63.996	54.903
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	▇▆▇▁▆▁▆█	134.218	126.45	136.72	101.606	129.388	101.32	130.673	139.702	NA	111.958	NA	100.168	NA	112.388	NA	NA	NA	NA	NA	67.77	NA	NA	NA	NA	NA	NA	NA	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:AccountsReceivableNetCurrent	█▄▅▂▃▅▁	174.662	141.876	149.251	131.429	137.529	149.229	123.656	NA	56.969	NA	51.602	NA	45.252	64.194	50.854	NA	50.349	54.623	59.034	NA	62.457	41.261	46.966	48.419	39.457	41.182	54.099	44.482	37.832	37.573	44.441	39.072	26.121	26.061	33.458	32.417	31.436	22.924	32.191	19.747	21.388	30.099	40.308	38.783	29.289	45.183	43.546	NA	44.523	NA	NA
us-gaap:InventoryNet	█▇▆▅▃▁▃	206.981	200.896	191.217	184.981	171.836	160.543	176.134	NA	69.691	NA	66.63	NA	63.47	96.82	61.915	NA	58.884	54.238	53.11	NA	52.86	55.02	48.862	41.544	38.837	39.26	41.111	49.893	47.749	48.398	41.539	37.487	35.105	35.762	37.753	37.855	34.52	36.543	39.248	43.545	39.659	43.054	45.379	48.978	52.26	51.353	45.708	NA	43.168	NA	NA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent	▂▂▁▃▆█▄	19.147	19.156	17.471	19.908	23.486	26.798	21.638	NA	7.398	NA	7.955	NA	7.235	14.821	6.14	NA	7.07	9.851	6.905	NA	6.234	9.91	8.887	5.925	5.667	5.835	6.793	6.06	6.592	6.651	6.842	9.493	9.289	9.356	9.911	8.972	10.519	7.534	8.221	7.141	7.492	10.116	10.056	10.629	8.119	3.514	6.367	NA	2.986	NA	NA

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
us-gaap:PropertyPlantAndEquipmentGross	█▄▁██▆▅	138.644	135.182	132.866	138.641	138.523	136.809	136.533	NA	100.162	NA	98.649	NA	95.198	52.261	95.517	NA	91.777	90.376	89.97	NA	89.229	85.023	87.557	87.49	86.545	85.645	83.039	80.905	80.561	80.22	80.183	78.604	78.348	80.227	75.229	73.308	72.784	70.651	66.142	63.839	62.932	63.747	61.601	NA	52.255	NA	NA	NA	NA	NA	NA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	█▆▅▅▄▂▁	50.629	47.503	44.916	45.925	43.006	39.836	38.113	NA	47.713	NA	45.87	NA	44.666	33.387	47.617	NA	48.642	47.326	46.175	NA	44.419	42.706	45.539	44.314	42.319	41.321	39.555	37.837	36.068	34.276	32.642	30.804	28.715	29.491	27.985	26.177	25.345	24.054	22.311	20.901	19.719	20.667	19.398	NA	16.734	NA	NA	NA	NA	NA	NA
us-gaap:AmortizationOfIntangibleAssets	▇▇▇███▆▁▁▁▁▁	12.324	12.357	12.665	13.646	13.703	13.732	9.284	0.387	0.289	0.387	0.289	0.387	NA	NA	NA	NA	NA	NA	NA	1.94	NA	0.0	0.0	0.0	0.0	0.0	0.0	0.024	0.025	0.026	0.025	0.038	0.102	0.103	0.107	0.108	0.113	0.195	0.195	0.198	0.196	0.193	0.195	0.192	0.566	0.329	0.401	0.174	0.388	0.368	0.41
us-gaap:PropertyPlantAndEquipmentNet	▁▁▁▄▆▇█	88.015	87.679	87.95	92.716	95.517	96.973	98.42	NA	52.449	NA	52.779	NA	50.532	18.874	47.9	NA	43.135	43.05	43.795	NA	44.81	42.317	42.018	43.176	44.226	44.324	43.484	43.068	44.493	45.944	47.541	47.8	49.633	50.736	47.244	47.131	47.439	46.597	43.831	42.938	43.213	43.08	42.203	38.255	35.521	35.329	37.349	NA	35.186	NA	NA
us-gaap:Goodwill	██▁▂▂▂▁	313.891	313.891	306.632	307.626	307.626	307.626	307.148	NA	26.31	NA	26.31	NA	26.372	22.495	26.372	NA	10.611	10.611	10.611	NA	10.232	10.099	9.756	9.227	8.94	9.665	9.68	9.592	9.415	9.678	9.59	9.391	10.494	11.039	11.677	11.865	11.743	11.58	11.255	11.041	11.352	11.079	10.796	11.951	11.99	NA	NA	NA	0.0	NA	NA
us-gaap:IntangibleAssetsNetExcludingGoodwill	▁▂▂▄▅▇█	305.886	318.21	318.357	330.923	344.569	358.222	371.953	NA	25.078	NA	25.811	NA	26.572	7.448	27.326	NA	NA	NA	NA	NA	2.206	NA	NA	NA	NA	NA	NA	NA	NA	2.403	2.886	3.326	4.294	5.255	6.28	7.139	7.864	8.559	9.226	9.938	10.98	11.614	12.229	13.618	14.394	4.836	5.165	NA	5.972	NA	NA
us-gaap:FiniteLivedIntangibleAssetsNet	▁▂▂▄▅▇█	259.286	271.61	271.757	284.323	297.969	311.622	325.353	NA	NA	NA	NA	NA	NA	NA	NA	NA	4.101	4.136	3.171	NA	2.206	2.258	0.309	0.361	0.412	0.552	0.989	1.425	1.867	2.403	2.886	3.326	4.294	5.255	6.28	7.139	7.864	8.559	9.226	9.938	10.98	11.614	12.229	NA	14.394	NA	NA	NA	NA	NA	NA
us-gaap:OperatingLeaseRightOfUseAsset	▂▅▁▂▄▆█	20.449	21.887	19.669	20.076	21.33	22.382	23.588	NA	9.996	NA	10.767	NA	11.567	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	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:OtherAssetsNoncurrent	▅▇▁▁▃▃█	24.809	26.779	21.337	21.437	22.863	23.65	27.939	NA	0.441	NA	0.446	NA	0.44	5.506	0.582	NA	0.456	0.332	0.345	NA	0.413	0.389	0.399	0.405	0.474	0.526	0.549	0.525	0.533	0.497	0.541	0.554	0.559	0.593	0.679	0.699	0.696	0.723	0.68	0.829	0.924	0.885	0.866	0.892	1.042	1.091	1.139	NA	1.235	NA	NA

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
us-gaap:AccountsPayableCurrent	██▆▅▃▃▁	46.685	45.622	40.183	37.486	34.318	32.205	27.738	NA	17.541	NA	19.459	NA	18.901	16.981	16.54	NA	20.87	18.976	18.492	NA	13.857	17.18	14.925	18.614	11.342	8.562	11.004	13.212	11.675	15.882	13.358	11.913	10.199	5.948	6.982	7.409	10.661	11.967	8.63	6.362	6.398	5.329	8.988	10.364	7.975	11.924	14.542	NA	11.486	NA	NA
us-gaap:AccruedLiabilitiesCurrent	█▂▆▃▅▃▁	40.957	28.925	37.075	31.063	35.131	29.395	26.204	NA	NA	NA	NA	NA	NA	13.7	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:ContractWithCustomerLiabilityCurrent	██▂▄▃▃▁	21.19	21.424	14.334	15.871	15.656	15.57	12.629	NA	7.37	NA	9.865	NA	10.641	6.767	8.99	NA	NA	NA	NA	NA	7.408	NA	NA	NA	NA	NA	NA	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:LiabilitiesCurrent	█▇▆▃▃▂▁	133.168	126.412	120.091	97.231	98.715	94.328	85.743	NA	49.831	NA	50.955	NA	50.407	44.991	59.773	NA	59.116	53.036	47.875	NA	44.095	44.062	45.211	47.512	42.026	45.905	57.113	47.496	45.211	47.55	42.63	39.808	38.202	28.76	31.38	35.893	48.957	39.589	39.962	30.113	30.727	32.356	40.709	41.337	40.781	36.214	35.121	NA	32.477	NA	NA
us-gaap:OperatingLeaseLiabilityCurrent	▆█▃▁▃▄▅	5.121	5.605	4.47	4.129	4.603	4.798	4.906	NA	2.773	NA	2.845	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	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:OtherAccruedLiabilitiesCurrent	█▅▃▂▂▁▁	1.32	0.942	0.743	0.553	0.632	0.507	0.491	NA	1.528	NA	1.326	NA	1.202	0.611	1.181	NA	1.637	1.18	1.286	NA	1.039	1.898	1.373	1.435	1.249	2.11	3.516	2.918	2.692	2.96	2.099	2.061	2.152	NA	NA	NA	2.678	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:OtherLiabilitiesCurrent	▆█▇▁▁▃▄	24.336	30.441	28.499	12.811	13.61	17.158	19.172	NA	8.702	NA	7.308	NA	6.859	7.543	9.421	NA	8.47	8.508	7.12	NA	7.249	7.704	7.368	7.293	8.047	8.63	9.333	8.978	8.878	9.422	8.221	8.11	8.265	7.834	8.348	8.185	7.936	8.043	8.929	8.385	7.822	9.107	14.382	14.301	16.709	8.939	7.529	NA	7.293	NA	NA
us-gaap:TaxesPayableCurrent	▃▅█▂▁▇▆	1.076	2.543	4.109	0.639	0.217	3.689	2.783	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0.776	0.751	0.723	0.701	0.635	0.615	0.599	1.171	2.334	2.28	2.28	2.135	2.43	2.43	2.411	2.401	NA	NA	NA	0.0	NA	NA

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
us-gaap:DeferredIncomeTaxLiabilitiesNet	▁▁▁▆███	55.867	56.258	55.623	64.278	66.271	66.263	67.04	NA	0.158	NA	0.163	NA	0.166	NA	0.162	NA	0.172	NA	NA	NA	0.179	NA	NA	NA	NA	NA	NA	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:OtherLiabilitiesNoncurrent	▁▃▁█▆▅█	27.895	28.737	27.712	31.523	30.577	29.991	31.771	NA	0.217	NA	0.218	NA	0.22	11.161	0.219	NA	0.511	0.512	0.535	NA	0.521	0.377	0.375	0.377	0.353	0.866	0.878	0.859	0.878	1.018	1.226	1.348	1.279	1.673	1.603	1.645	1.615	2.064	2.07	2.011	2.14	1.978	2.078	2.151	2.813	5.228	5.248	NA	3.912	NA	NA
us-gaap:OperatingLeaseLiabilityNoncurrent	▁▃▁▃▄▆█	16.365	17.203	16.455	17.373	18.149	18.95	19.97	NA	7.193	NA	8.017	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	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:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo		NA	NA	4.446	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	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	3.46	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	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	2.943	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	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	2.912	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	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	5.295	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
us-gaap:StockholdersEquity	███▇▇▇█▁▁	1329.563	1292.312	1264.746	1237.683	1221.209	1225.805	1264.026	385.473	335.772	NA	328.98	NA	320.386	361.888	312.852	NA	294.075	278.484	260.727	NA	262.383	274.485	265.127	253.913	243.774	216.639	204.0	193.746	187.328	187.799	184.464	181.838	179.537	189.938	216.895	213.27	207.373	203.802	204.254	205.852	215.771	222.251	216.776	215.244	209.992	206.314	196.351	NA	170.849	NA	NA
us-gaap:CommonStockValue	▁▁▁▁▁▁█	0.049	0.049	0.049	0.049	0.049	0.049	0.05	NA	0.025	NA	0.025	NA	0.025	0.031	0.024	NA	0.024	0.024	0.024	NA	0.026	0.026	0.025	0.025	0.025	0.025	0.025	0.024	0.024	0.024	0.024	0.024	0.024	0.024	0.024	0.024	0.024	0.023	0.023	0.023	0.023	0.023	0.023	0.023	0.023	0.023	0.023	NA	0.022	NA	NA
us-gaap:AdditionalPaidInCapitalCommonStock	▄▃▃▂▁▃█	1241.68	1239.45	1233.967	1229.72	1223.068	1238.378	1269.437	NA	259.744	NA	256.503	NA	251.841	369.893	247.983	NA	241.318	237.378	234.793	NA	255.368	278.722	275.908	273.735	271.969	268.553	NA	NA	258.715	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA
us-gaap:RetainedEarningsAccumulatedDeficit	█▅▄▂▂▁▁	85.326	50.275	26.162	6.248	-1.843	-9.267	-4.863	NA	78.516	NA	74.305	NA	70.375	-6.773	67.402	NA	55.38	43.811	26.136	NA	9.113	-1.685	-7.449	-15.737	-22.174	-48.828	-56.711	-62.742	-66.209	-64.396	-65.214	-66.558	-69.114	-64.475	-35.813	-36.401	-37.996	-38.552	-33.998	-29.432	-23.85	-20.203	-22.106	-26.612	-28.315	-27.784	-35.403	NA	-57.0	NA	NA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax	▆▆█▅▄▁▃	2.508	2.538	4.568	1.666	-0.065	-3.355	-0.598	NA	-2.513	NA	-1.853	NA	-1.855	-1.263	-2.557	NA	-2.647	-2.729	-0.226	NA	-2.124	-2.578	-3.357	-4.11	-6.046	-3.111	-3.631	-4.215	-5.202	-4.707	-4.489	-4.467	-2.769	-0.647	1.005	0.823	0.612	0.452	-0.71	-0.667	1.272	1.736	0.627	1.795	1.549	2.662	3.445	NA	2.072	NA	NA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	█▁	6.107	4.89	NA	4.253	4.775	3.955	NA	1.555	3.399	1.673	3.2	2.163	3.114	NA	3.153	NA	3.212	2.679	2.338	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
us-gaap:NetCashProvidedByUsedInOperatingActivities	▅█▆▅▆▃▁▄▂▃▂▂▂	25.429	50.999	33.125	25.988	37.973	8.898	-6.754	15.11	1.168	11.356	-1.447	-1.566	-0.856	NA	19.928	NA	24.437	26.257	32.714	48.787	5.219	5.126	NA	NA	NA	NA	NA	NA	NA	9.505	-1.283	-5.874	8.914	-4.98	0.123	-4.692	1.482	13.045	-8.437	-8.521	11.233	10.606	5.105	-2.936	18.618	9.745	15.166	10.499	2.94	11.302	NA
us-gaap:NetCashProvidedByUsedInInvestingActivities	▅▁▇▁█▇▇█▃▇▇▆▅	-16.049	-60.349	1.108	-57.055	9.948	-2.6	-0.981	12.78	-43.727	1.472	-1.22	-9.167	-15.964	NA	-4.676	NA	-15.346	-5.845	21.616	-14.743	11.089	-3.77	NA	NA	NA	NA	NA	NA	NA	4.885	0.056	-0.441	-4.013	1.632	-2.069	-3.603	-1.499	-3.647	-0.458	-2.178	-11.167	-24.735	-14.917	-0.974	-24.716	-0.446	-1.121	-0.816	-1.168	-1.294	NA
us-gaap:NetCashProvidedByUsedInFinancingActivities	▇█▇█▄▁▇██▇█▇█	-3.877	0.593	-0.566	2.399	-20.52	-35.015	-1.866	0.122	-0.158	-1.112	1.462	-1.342	0.745	NA	-0.487	NA	0.726	-0.091	-22.918	-2.392	-25.398	0.367	NA	NA	NA	NA	NA	NA	NA	0.856	-0.301	-0.352	-5.393	1.442	0.92	2.356	0.825	-5.053	0.948	-4.215	-4.014	-0.693	-3.759	1.657	3.623	0.051	-3.157	3.63	1.121	-1.399	NA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	▆▄█▂▇▂▄▇▁▆▅▄▃	7.768	-10.27	35.114	-27.782	28.068	-29.353	-9.029	27.744	-43.026	11.79	-1.177	-12.22	-15.739	NA	14.848	NA	9.902	20.289	31.013	32.932	-9.142	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet	█▁	33.077	-1.329	NA	5.368	-5.233	18.17	NA	-4.939	NA	-2.527	NA	13.593	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	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:NetCashProvidedByUsedInOperatingActivities	▅█▆▅▆▃▁▄▂▃▂▂▂	25.429	50.999	33.125	25.988	37.973	8.898	-6.754	15.11	1.168	11.356	-1.447	-1.566	-0.856	NA	19.928	NA	24.437	26.257	32.714	48.787	5.219	5.126	NA	NA	NA	NA	NA	NA	NA	9.505	-1.283	-5.874	8.914	-4.98	0.123	-4.692	1.482	13.045	-8.437	-8.521	11.233	10.606	5.105	-2.936	18.618	9.745	15.166	10.499	2.94	11.302	NA
us-gaap:NetIncomeLoss	█▇▆▅▅▄▂▅▅▅▅▅▄▅▅▅▅▆▆▆▅▅▅▅▇▅▅▅▄▄▄▄▄▁▄▄▄▄▄▄▄▄▅▄▄▅▅▅▇▆▅	35.051	24.113	19.914	8.091	7.424	-4.404	-17.752	6.56	4.211	5.526	3.93	7.576	2.973	8.082	12.024	7.187	11.568	17.675	15.13	13.505	10.798	5.764	8.288	5.352	26.654	7.883	6.031	3.467	-1.813	0.818	1.344	2.556	-4.639	-28.662	0.588	1.595	0.556	-4.554	-4.566	-5.582	-3.647	1.903	4.506	1.703	-0.531	7.619	11.087	10.51	26.128	12.327	11.567
us-gaap:ProfitLoss	█▇▆▄▄▃▁▄▄▄▄▄▄	35.051	24.113	19.914	8.091	7.424	-4.404	-17.752	6.56	4.211	5.526	3.93	7.576	2.973	NA	12.024	NA	11.568	17.675	16.381	13.505	10.798	5.764	NA	NA	NA	NA	NA	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:ShareBasedCompensation	█▆▆▅▆▅▇▁▄▁▄▂▃	6.107	4.89	4.679	4.253	4.775	3.955	5.194	1.555	3.399	1.673	3.2	2.163	3.114	NA	3.153	NA	3.212	2.679	2.338	-1.105	2.044	2.448	2.163	2.164	2.234	2.0	1.743	1.689	1.584	1.682	1.411	1.571	1.637	1.705	1.776	1.634	1.762	2.704	1.751	1.457	1.355	1.481	1.593	1.461	1.727	0.969	0.955	0.822	0.209	0.61	NA

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
us-gaap:NetCashProvidedByUsedInInvestingActivities	▅▁▇▁█▇▇█▃▇▇▆▅	-16.049	-60.349	1.108	-57.055	9.948	-2.6	-0.981	12.78	-43.727	1.472	-1.22	-9.167	-15.964	NA	-4.676	NA	-15.346	-5.845	21.616	-14.743	11.089	-3.77	NA	NA	NA	NA	NA	NA	NA	4.885	0.056	-0.441	-4.013	1.632	-2.069	-3.603	-1.499	-3.647	-0.458	-2.178	-11.167	-24.735	-14.917	-0.974	-24.716	-0.446	-1.121	-0.816	-1.168	-1.294	NA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment	█▆▁▁▃▂▄▂▃▂▆▂▆	5.683	3.875	0.438	0.782	1.612	0.997	2.601	1.547	1.629	1.334	4.182	1.32	4.132	NA	4.544	NA	1.181	0.442	1.319	7.868	2.862	0.806	1.489	0.047	0.65	0.821	1.918	0.61	0.481	0.322	0.541	0.502	2.992	-1.013	1.62	2.193	2.173	1.546	0.973	0.997	1.285	1.07	1.768	0.867	0.673	0.336	0.991	0.755	1.143	1.262	NA

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
us-gaap:NetCashProvidedByUsedInFinancingActivities	▇█▇█▄▁▇██▇█▇█	-3.877	0.593	-0.566	2.399	-20.52	-35.015	-1.866	0.122	-0.158	-1.112	1.462	-1.342	0.745	NA	-0.487	NA	0.726	-0.091	-22.918	-2.392	-25.398	0.367	NA	NA	NA	NA	NA	NA	NA	0.856	-0.301	-0.352	-5.393	1.442	0.92	2.356	0.825	-5.053	0.948	-4.215	-4.014	-0.693	-3.759	1.657	3.623	0.051	-3.157	3.63	1.121	-1.399	NA
us-gaap:PaymentsForRepurchaseOfCommonStock		NA	NA	0.0	0.0	18.386	33.614	0.0	0.0	NA	0.0	NA	0.744	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0.0	0.0	0.0	1.721	5.344	0.0	0.0	0.0	0.0	0.0	0.0	5.0	3.544	0.0	4.96	0.0	0.0	0.0	NA	NA	0.777	1.32	NA

		2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03

Common Stock Value

us-gaap:CommonStockValue

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	49000.0	49000.0	49000.0	49000.0	49000.0	49000.0	50000.0	25000.0	25000.0	25000.0	31000.0	24000.0	24000.0	24000.0	24000.0	26000.0	26000.0	25000.0	25000.0	25000.0	25000.0	25000.0	24000.0	24000.0	24000.0	24000.0	24000.0	24000.0	24000.0	24000.0	24000.0	24000.0	23000.0	23000.0	23000.0	23000.0	23000.0	23000.0	23000.0	23000.0	23000.0	23000.0	22000.0
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	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	0.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued us-gaap:StatementEquityComponents

us-gaap:CommonStockSharesIssued

us-gaap:CommonStock

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31	2011-01-01	2010-01-02	2008-12-27
Value	49	48	48	48	48	0.049132	50	25	24	24	24	24	24	24	24	23	24	25	24	23	23	23	23	22	21	18
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

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-09-30	2017-07-01	2017-04-01	2016-09-24	2016-06-25	2016-03-26	2015-09-26	2015-06-27	2015-03-28	2014-09-27	2014-06-28	2014-03-29	2013-09-28	2013-06-29	2013-03-30	2012-09-29	2012-06-30	2012-03-31	2011-10-01	2011-07-02	2011-04-02	2010-10-02	2010-07-03
Value	49	49	49	49	50	43	25	24	25	24	25	24	25	26	24	24	25	25	25	25	25	24	24	24	24	24	24	24	24	23	23	23	23	23	23	23	23	23	23	22
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	100.0	100.0	100.0	100.0	100.0	100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-09-30	2017-07-01	2017-04-01	2016-09-24	2016-06-25	2016-03-26	2015-09-26	2015-06-27	2015-03-28	2014-09-27	2014-06-28	2014-03-29	2013-09-28	2013-06-29	2013-03-30	2012-09-29	2012-06-30	2012-03-31	2011-10-01	2011-07-02	2011-04-02	2010-10-02	2010-07-03
Value	49	49	48	48	50	43	25	24	25	24	24	24	25	25	24	23	25	25	25	25	24	24	24	24	24	23	24	23	23	23	23	23	23	23	23	22	22	22	21	21
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	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	2020-09-26	2020-06-27	2019-09-30	2019-06-30	2014-09-27	2013-09-28	2013-06-29
Value	4000.0	52000.0	56000.0	52000.0	300000.0	410000.0	344000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:RestrictedStockUnitsRSU

Period End	2020-09-26	2020-06-27	2019-09-30	2019-06-30	2019-03-31
Value	4000.0	52000.0	56000.0	52000.0	167000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	100.0	100.0	100.0	100.0	0.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	0.71	0.49	0.4	0.17	0.15	-0.09	-0.41	0.26	0.17	0.22	0.16	0.31	0.12	0.32	0.49	0.28	0.48	0.74	0.59	0.53	0.42	0.23	0.33	0.21	1.08	0.32	0.25	0.14	-0.08	0.03	0.06	0.11	-0.19	-1.19	0.02	0.07	0.02	-0.2	-0.2	-0.24	-0.16	0.08	0.19	0.07	-0.03	0.33	0.49	0.47	1.19	0.56	0.53
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	100.0	100.0	100.0	100.0	100.0	100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	0.71	0.49	0.41	0.16	0.15	-0.09	-0.41	0.26	0.17	0.22	0.16	0.3	0.12	0.32	0.48	0.28	0.47	0.72	0.58	0.52	0.42	0.22	0.32	0.21	1.05	0.31	0.24	0.14	-0.07	0.03	0.06	0.11	-0.19	-1.19	0.02	0.07	0.02	-0.2	-0.2	-0.24	-0.15	0.08	0.19	0.07	-0.02	0.32	0.47	0.45	1.13	0.53	0.51
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	100.0	100.0	100.0	100.0	100.0	100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02
Value	35	22	22	9.822	10	-7.161	-16.83	6.296	3.551	5.956	3.932	7.153	3.675	12	11	15	18	11	11	6.543	9.041	7.288	23	8.403	6.615	4.454	-2.308	0.6	1.322	0.858	-6.761	-30.314	0.77	1.806	0.716	-3.392	-4.609	-7.521	-4.111	3.012	3.338	1.949	-1.644	6.836	12	10
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	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	18.1	13.0	14.7	7.8	7.9	-5.1	-14.0	10.0	4.9	9.7	5.8	11.7	5.5	15.7	15.2	17.1	22.2	15.5	-11.5	11.5	14.0	12.3	40.1	14.3	11.9	9.4	-5.4	1.3	2.7	1.7	-17.0	-111.7	1.6	3.5	1.6	-8.7	-13.3	-30.6	-13.6	6.9	6.3	3.5	-3.6	11.7	18.8	17.5

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	87	78	79	57	63	77	80	31	34	29	32	28	33	34	32	37	34	32	34	26	30	30	28	28	27	22	21	23	25	26	22	15	25	27	24	23	20	14	18	21	28	30	24	27	28	27	21	24	22
Percentage of CostOfGoodsAndServicesSold	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	45.5	46.6	51.4	45.5	47.0	55.2	67.2	49.9	47.1	48.1	48.0	47.4	49.6	45.4	43.0	42.6	42.3	43.9	-34.9	45.9	47.8	52.0	47.9	48.2	49.0	48.4	51.3	51.4	52.2	53.6	56.3	57.9	52.3	53.2	52.5	59.5	58.1	57.3	60.5	49.6	53.4	54.8	53.4	47.1	43.9	43.8	47.3	45.5	44.9

Cost Of Revenue

us-gaap:CostOfRevenue

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	87	78	79	57	63	77	80	31	34	29	32	28	33	34	32	37	34	32	34	26	30	30	28	28	27	22	21	23	25	26	22	15	25	27	24	23	20	14	18	21	28	30	24	27	28	27	21	24	22
Percentage of CostOfRevenue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	45.5	46.6	51.4	45.5	47.0	55.2	67.2	49.9	47.1	48.1	48.0	47.4	49.6	45.4	43.0	42.6	42.3	43.9	-34.9	45.9	47.8	52.0	47.9	48.2	49.0	48.4	51.3	51.4	52.2	53.6	56.3	57.9	52.3	53.2	52.5	59.5	58.1	57.3	60.5	49.6	53.4	54.8	53.4	47.1	43.9	43.8	47.3	45.5	44.9

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	16	15	14	14	15	20	24	10	7.784	9.649	7.885	8.758	7.905	8.845	7.744	7.465	7.741	8.182	6.644	6.798	6.591	6.307	6.231	5.975	5.755	5.42	5.543	5.59	5.544	5.767	5.86	5.781	6.001	6.338	5.659	5.424	5.507	5.512	5.107	4.861	5.583	6.081	6.143	5.817	5.442	5.499	4.877	4.801	4.357
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	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	8.4	9.2	9.6	11.4	11.8	14.4	20.2	16.3	10.6	15.7	11.7	14.4	11.8	11.5	10.1	8.4	9.4	11.0	-6.8	12.0	10.2	10.6	10.5	10.2	10.3	11.4	13.0	12.2	11.4	11.4	14.8	21.3	12.5	12.3	12.3	13.9	15.9	22.5	16.9	11.1	10.5	11.0	13.6	10.0	8.5	8.8	10.6	8.9	8.6

Gross Profit

us-gaap:GrossProfit

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	105	90	75	68	71	62	39	31	38	31	35	32	33	32	42	31	43	50	42	41	43	30	33	28	30	30	28	24	20	22	23	23	17	11	22	24	21	15	14	10	11	22	24	25	21	30	36	34	24	29	28
Percentage of GrossProfit	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	54.5	53.4	48.6	54.5	53.0	44.8	32.8	50.1	52.9	51.9	52.0	52.6	50.4	52.0	54.6	52.0	57.0	57.4	58.0	56.1	-44.8	54.1	52.2	48.0	52.1	51.8	51.0	51.6	48.7	48.6	47.8	46.4	43.7	42.1	47.7	46.8	47.5	40.5	41.9	42.7	39.5	50.4	46.6	45.2	46.6	52.9	56.1	56.2	52.7	54.5	55.1

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28
Value	35	26	14	8.927	7.418	-4.004	-22.421	6.908	6.154	6.121	4.562	8.795	3.504	10	11	8.368	14	20	17	35	19	7.52	10	5.466	9.186	9.215	6.887	3.847	-0.997	1.531	2.161	2.873
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	18.6	15.7	9.4	7.1	5.5	-2.9	-18.6	11.0	8.4	10.0	6.7	14.4	5.2	16.0	15.1	13.8	18.9	23.2	24.2	48.1	-19.8	13.3	16.9	9.2	15.5	15.7	12.3	8.1	-2.3	3.4	4.4	5.7

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	0.905	2.489	-5.387	0.836	-0.006	0.4	-4.669	0.348	1.943	0.595	0.632	1.219	0.531	-0.382	2.921	2.895	4.442	22	8.604	1.756	2.622	0.114	-17.468	1.332	0.856	0.38	0.816	0.713	0.817	0.317	1.003	17	-0.012	0.587	0.308	-3.133	-2.412	-4.182	-2.723	1.356	-0.49	2.011	-0.19	4.694	5.652	5.743	-17.687	1.114	1.19
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	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	0.5	1.5	-3.5	0.7	-0.0	0.3	-3.9	0.6	2.7	1.0	0.9	2.0	0.8	-0.5	3.8	3.3	5.4	30.0	-8.8	3.1	4.1	0.2	-29.5	2.3	1.5	0.8	1.9	1.6	1.7	0.6	2.5	66.0	-0.0	1.1	0.7	-8.0	-7.0	-17.0	-9.0	3.1	-0.9	3.6	-0.4	8.1	8.8	9.2	-38.3	2.1	2.3

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	3.181	1.799	1.853	1.099	2.875	0.588	0.219	-4.276	0.095	0.114
Percentage of IncomeTaxesPaidNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	1.6	1.1	1.2	0.9	2.1	0.4	0.2	-6.8	0.2	0.2

Interest Income Expense Nonoperating Net

us-gaap:InterestIncomeExpenseNonoperatingNet

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	304000.0	361000.0	459000.0	544000.0	686000.0	1210000.0	999000.0	1001000.0	860000.0	806000.0
Percentage of InterestIncomeExpenseNonoperatingNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	0.2	0.2	0.3	0.4	0.5	0.9	0.8	1.6	1.4	1.3

Net Income Loss

us-gaap:NetIncomeLoss

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	35	24	19	8.091	7.424	-4.404	-17.752	6.56	4.211	5.526	3.93	7.576	2.973	8.082	12	7.187	11	17	15	13	10	5.764	8.288	5.352	26	7.883	6.031	3.467	-1.813	0.818	1.344	2.556	-4.639	-28.662	0.588	1.595	0.556	-4.554	-4.566	-5.582	-3.647	1.903	4.506	1.703	-0.531	7.619	11	10	26	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	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	18.1	14.2	12.8	6.4	5.5	-3.1	-14.7	10.4	5.8	9.0	5.8	12.4	4.4	12.9	15.6	11.9	15.1	19.9	20.7	18.1	-11.0	10.2	12.9	9.0	45.1	13.4	10.8	7.3	-4.2	1.8	2.8	5.1	-11.7	-105.6	1.2	3.1	1.2	-11.7	-13.2	-22.7	-12.0	4.3	8.5	3.1	-1.2	13.1	17.2	16.9	56.6	22.9	22.8

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31
Value	35	24	8.091	7.424	-4.404	6.56	4.211	5.526	3.93	7.576	2.973	12	11	17	16
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	108.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	18.1	14.2	6.4	5.5	-3.1	10.4	5.8	9.0	5.8	12.4	4.4	15.6	15.1	19.9	19.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax 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

Operating Expenses

us-gaap:OperatingExpenses

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	69	62	60	59	63	67	62	26	32	26	31	24	30	31	29	30	26	6.223	24	23	22	22	21	21	21	20	21	20	20	21	21	22	22	22	20	23	20	20	18	18	20	20	21	19	18	17	15	15	15
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	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	35.9	37.2	39.1	47.1	47.2	48.5	52.2	41.7	44.8	43.1	46.5	40.1	45.4	40.5	38.3	34.0	32.8	8.3	-25.3	40.9	35.7	38.7	36.9	36.3	37.8	43.7	51.2	45.9	42.7	42.0	53.3	81.2	46.1	42.9	44.7	59.0	59.7	81.8	61.1	42.2	38.5	37.8	47.8	32.7	28.9	28.7	33.9	28.9	29.7

Operating Income Loss

us-gaap:OperatingIncomeLoss

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	35	27	14	9.282	7.93	-5.246	-23.359	5.29	5.935	5.418	3.749	7.608	3.325	10	14	20	20	35	19	7.484	10	5.508	8.963	9.066	7.336	3.73	-1.041	1.264	2.509	2.241	-3.806	-10.609	0.746	2.016	1.292	-7.242	-6.156	-9.603	-6.538	3.614	4.296	4.106	-0.528	11	17	17	8.667	13	12
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	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	18.6	16.2	9.5	7.3	5.9	-3.7	-19.4	8.4	8.1	8.8	5.5	12.5	5.0	14.1	18.6	23.5	25.0	47.7	-19.5	13.2	16.5	9.3	15.2	15.4	13.2	7.9	-2.4	2.8	5.2	4.4	-9.6	-39.1	1.6	3.9	2.8	-18.5	-17.8	-39.1	-21.6	8.2	8.1	7.4	-1.2	20.2	27.2	27.5	18.8	25.6	25.4

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	-289000.0	-1244000.0	-643000.0	-899000.0	-1198000.0	32000.0	-61000.0	617000.0	257000.0	-157000.0	828000.0	381000.0	270000.0	850000.0	322000.0	-166000.0	352000.0	-787000.0	246000.0	59000.0	274000.0	-3000.0	230000.0	229000.0	-394000.0	225000.0	73000.0	346000.0	-311000.0	704000.0	263000.0	-57000.0	-84000.0	252000.0	-337000.0	-334000.0	-637000.0	40000.0	393000.0	-121000.0	-49000.0	-175000.0	83000.0	834000.0	-470000.0	-513000.0	109000.0	-53000.0	222000.0
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	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	-0.1	-0.7	-0.4	-0.7	-0.9	0.0	-0.1	1.0	0.4	-0.3	1.2	0.6	0.4	1.1	0.4	-0.2	0.4	-1.1	-0.3	0.1	0.4	-0.0	0.4	0.4	-0.7	0.5	0.2	0.8	-0.6	1.4	0.7	-0.2	-0.2	0.5	-0.7	-0.9	-1.8	0.2	1.3	-0.3	-0.1	-0.3	0.2	1.4	-0.7	-0.8	0.2	-0.1	0.4

Profit Loss

us-gaap:ProfitLoss

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30
Value	35	24	19	8.091	7.424	-4.404	-17.752	6.56	4.211	5.526	3.93	7.576	2.973	12	11	17	16	13	10	5.764
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
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	18.1	14.2	12.8	6.4	5.5	-3.1	-14.7	10.4	5.8	9.0	5.8	12.4	4.4	15.6	15.1	19.9	19.9	18.1	-11.0	10.2

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	25	21	21	19	22	20	16	10	13	10	14	10	12	12	12	12	10	11	10	8.825	9.139	8.694	7.996	7.868	7.511	8.068	7.805	8.579	8.157	8.159	8.052	8.037	9.373	8.314	8.019	8.926	8.321	7.447	7.289	7.176	7.644	7.476	5.978	6.045	5.779	5.488	4.872	4.601	4.931
Percentage of ResearchAndDevelopmentExpense	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	13.2	13.0	14.1	15.6	16.4	15.0	13.9	16.6	18.8	17.3	20.8	17.3	19.4	16.6	16.6	14.1	12.4	14.8	-10.3	15.6	14.2	14.7	13.5	13.4	13.5	17.0	18.3	18.8	16.8	16.2	20.3	29.6	19.5	16.1	17.4	22.9	24.1	30.3	24.1	16.3	14.4	13.5	13.2	10.4	9.0	8.8	10.6	8.5	9.7

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	193	169	155	126	134	139	120	62	73	61	67	60	67	62	77	60	76	88	73	74	-98.103	56	64	59	59	58	55	47	42	45	48	50	39	27	48	51	46	39	34	24	30	43	53	55	45	58	64	62	46	53	50
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	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	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

onto:PartsRevenue

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	18	17	16	18	16	13	12	7.142	7.073	8.077
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	9.7	10.3	10.8	14.9	12.1	9.7	10.5	11.3	11.5	13.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	9.7	10.3	10.8	14.9	12.1	9.7	10.5	11.3	11.5	13.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax onto:PartsRevenue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

onto:ServiceRevenue

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	11	10	9.006	9.903	10	12	6.442	3.007	2.826	3.006
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	6.1	6.1	5.8	7.8	7.7	8.6	5.3	4.8	4.6	4.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	6.1	6.1	5.8	7.8	7.7	8.6	5.3	4.8	4.6	4.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax onto:ServiceRevenue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

onto:SystemsAndSoftwareRevenue

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	162	141	129	97	108	114	101	52	51	49
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	84.2	83.6	83.4	77.3	80.2	81.7	84.2	83.9	83.9	81.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	84.2	83.6	83.4	77.3	80.2	81.7	84.2	83.9	83.9	81.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax onto:SystemsAndSoftwareRevenue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

country:CN

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-07-02
Value	42	25	34	31	27	31	25	14	20	24	25	16	14	21	14	28	8.042	18	12	3.403	7.33	6.687	8.234	15	13	6.506	5.016	6.731	1.625	4.001	1.008	2.848	9.358	15	6.111	0.901	5.407	0.644	1.416	1.27	1.702	7.566
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	21.9	15.2	22.4	25.2	20.0	22.4	20.8	23.3	27.8	39.3	38.3	26.3	21.4	27.8	18.9	32.0	11.0	24.8	-12.6	6.0	11.4	11.3	13.9	26.8	23.3	13.7	11.8	14.7	3.3	7.9	2.5	10.5	19.5	30.0	13.2	2.3	15.6	2.6	4.7	2.9	3.2	11.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	21.9	15.2	22.4	25.2	20.0	22.4	20.8	23.3	27.8	39.3	38.3	26.3	21.4	27.8	18.9	32.0	9.8	24.8	-12.6	6.0	11.4	11.3	13.9	26.8	23.3	13.7	11.8	14.7	3.3	7.9	2.5	10.5	19.5	30.0	13.2	2.3	15.6	2.6	4.7	2.9	3.2	11.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:CN	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

country:DE

Period End	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	3.76	2.51	6.082	1.639	0.735	0.674	1.85
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	3.0	1.9	4.3	1.4	1.2	1.1	3.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	3.0	1.9	4.3	1.4	1.2	1.1	3.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:DE	100.0	100.0	100.0	100.0	100.0	100.0	100.0

country:JP

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02
Value	17	7.865	16	13	13	15	13	8.962	11	3.427	4.214	3.94	4.318	16	19	15	13	1.543	24	4.781	9.267	3.353	7.959	5.078	6.379	7.188	15	7.778	5.18	4.099	2.222	3.684	2.012	2.387	2.018	5.212	4.086	5.896	2.511	4.339	7.633	10	8.371
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	9.0	4.6	10.7	10.8	10.3	10.7	11.2	14.2	15.3	5.6	6.2	6.5	6.4	21.0	25.7	16.9	18.3	2.1	-25.1	8.4	14.4	5.7	13.5	8.6	11.4	15.1	35.7	17.0	13.0	15.1	4.6	7.1	4.4	6.1	5.8	21.2	13.5	13.4	4.7	7.8	16.9	18.7	13.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	9.0	4.6	10.7	10.8	10.3	10.7	11.2	14.2	15.3	5.6	6.2	6.5	6.4	21.0	25.7	16.9	16.3	2.1	-25.1	8.4	14.4	5.7	13.5	8.6	11.4	15.1	35.7	17.0	13.0	15.1	4.6	7.1	4.4	6.1	5.8	21.2	13.5	13.4	4.7	7.8	16.9	18.7	13.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:JP	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

country:KR

Period End	2021-06-26	2021-03-27	2020-06-27	2020-03-28	2019-09-28	2019-06-29	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27
Value	41	50	22	20	10	13	13	16	23	30	37	-28.208	21	22	31	18	20	11	4.468	8.436	1.765	6.794	7.37
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	21.4	29.9	17.0	14.8	14.4	19.3	20.8	21.5	30.8	35.0	51.7	-37.8	-22.1	39.3	48.9	31.4	33.9	20.0	8.0	17.8	4.1	14.9	15.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	21.4	29.9	17.0	14.8	14.4	19.3	20.8	21.5	30.8	35.0	45.9	-37.8	-22.1	39.3	48.9	31.4	33.9	20.0	8.0	17.8	4.1	14.9	15.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:KR	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

country:SG

Period End	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-06-28	2013-09-28	2012-09-29
Value	5.69	6.338	2.59	4.692	2.396	2.775	1.596	8.723	2.016	1.551	1.79	5.842	2.38	12	0.546	9.581	9.774	0.963	1.491	3.213	7.364	16	9.902	1.52	2.988	10	2.794	0.496	2.157	0.792
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	4.5	4.7	1.9	3.9	3.8	3.8	2.6	12.9	3.3	2.3	2.3	7.6	2.7	16.6	0.7	-9.8	17.2	1.5	2.5	5.4	12.5	29.8	20.9	3.6	6.5	20.7	5.5	1.0	5.5	1.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	4.5	4.7	1.9	3.9	3.8	3.8	2.6	12.9	3.3	2.3	2.3	7.6	2.7	14.8	0.7	-9.8	17.2	1.5	2.5	5.4	12.5	29.8	20.9	3.6	6.5	20.7	5.5	1.0	5.5	1.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:SG	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

country:TW

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29
Value	48	36	23	30	31	35	34	14	8.59	7.111	3.65	11	11	9.094	1.883	1.974	1.06	44	1.131	2.304	4.878	11	10	6.334	5.151	5.477	11	11	9.414	14	8.453	0.64	6.281	4.416	2.686	3.737	2.018	2.31	4.652	6.233
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	25.1	21.4	15.3	23.7	23.7	25.1	28.3	22.7	11.7	11.6	5.4	18.1	16.8	11.8	2.5	2.2	1.5	59.0	-1.2	4.1	7.6	19.9	17.3	10.8	9.2	11.5	27.0	24.8	19.4	28.6	21.3	2.4	13.1	8.6	5.8	9.6	5.8	9.4	15.4	14.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	25.1	21.4	15.3	23.7	23.7	25.1	28.3	22.7	11.7	11.6	5.4	18.1	16.8	11.8	2.5	2.2	1.3	59.0	-1.2	4.1	7.6	19.9	17.3	10.8	9.2	11.5	27.0	24.8	19.4	28.6	21.3	2.4	13.1	8.6	5.8	9.6	5.8	9.4	15.4	14.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:TW	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

country:US

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-09-29	2012-06-30	2012-03-31
Value	25	25	23	16	22	19	19	8.816	14	8.932	9.17	9.131	16	6.87	8.414	7.392	6.738	8.003	5.882	6.231	8.297	13	5.581	8.211	8.904	7.191	4.605	7.985	15	9.078	10	5.511	13	6.741	5.593	15	16	9.433	6.888	13	11
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	13.3	15.1	15.2	12.7	16.6	14.0	16.5	14.0	19.3	14.5	13.6	15.0	25.1	8.9	11.0	8.3	9.2	10.7	-6.0	11.0	12.9	22.9	9.4	14.0	16.0	15.1	10.8	17.5	31.0	18.0	26.6	20.3	27.7	13.1	12.1	40.1	47.3	38.4	15.7	26.1	20.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	13.3	15.1	15.2	12.7	16.6	14.0	16.5	14.0	19.3	14.5	13.6	15.0	25.1	8.9	11.0	8.3	8.2	10.7	-6.0	11.0	12.9	22.9	9.4	14.0	16.0	15.1	10.8	17.5	31.0	18.0	26.6	20.3	27.7	13.1	12.1	40.1	47.3	38.4	15.7	26.1	20.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

currency:KRW

Period End	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-06-30	2019-03-31
Value	13	22	20	8.481	10	10
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	10.5	17.0	14.8	13.5	17.5	17.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	10.5	17.0	14.8	13.5	17.5	17.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax currency:KRW	100.0	100.0	100.0	100.0	100.0	100.0

onto:CountryOtherAsia

Period End	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	3.706	0.273	0.273	1.601	1.386	1.047	0.993
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	2.9	0.2	0.2	1.3	2.2	1.7	1.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	2.9	0.2	0.2	1.3	2.2	1.7	1.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax onto:CountryOtherAsia	100.0	100.0	100.0	100.0	100.0	100.0	100.0

onto:CountryOtherEurope

Period End	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	8.413	7.579	8.987	6.047	3.189	3.772	5.116
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	6.7	5.6	6.4	5.0	5.1	6.1	8.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	6.7	5.6	6.4	5.0	5.1	6.1	8.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax onto:CountryOtherEurope	100.0	100.0	100.0	100.0	100.0	100.0	100.0

onto:SoutheastAsia

Period End	2021-06-26	2021-03-27	2020-06-27	2020-03-28
Value	3.781	5.947	6.611	2.863
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	2.0	3.5	4.9	2.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	2.0	3.5	4.9	2.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax onto:SoutheastAsia	100.0	100.0	100.0	100.0

srt:Europe

Period End	2021-06-26	2021-03-27	2020-06-27	2020-03-28
Value	14	17	10	15
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	7.5	10.3	7.5	10.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	7.5	10.3	7.5	10.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe	100.0	100.0	100.0	100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TimingOfTransferOfGoodOrService

us-gaap:TransferredAtPointInTime

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	182	161	140	122	131	133	113	58	57	56
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	94.2	95.2	90.3	96.5	97.7	95.6	94.2	93.2	93.2	92.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	94.2	95.2	90.3	96.5	97.7	95.6	94.2	93.2	93.2	92.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TransferredAtPointInTime	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:TransferredOverTime

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	11	8.118	15	4.477	3.152	6.183	6.99	4.272	4.203	4.301
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	5.8	4.8	9.7	3.5	2.3	4.4	5.8	6.8	6.8	7.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	5.8	4.8	9.7	3.5	2.3	4.4	5.8	6.8	6.8	7.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TransferredOverTime	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Selling And Marketing Expense

us-gaap:SellingAndMarketingExpense

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	15	13	11	11	11	13	12	5.09	8.465	5.798	8.244	4.726	9.282	9.451	8.902	10	9.024	-1.935	8.109	7.553	7.239	7.938	7.614	7.495	7.823	7.249	7.15	6.76	7.029	7.116	6.59	6.389	6.681	7.373	6.826	6.758	6.613	6.932	5.897	6.308	7.041	7.211	6.461	6.862	6.997	6.699	5.498	5.734	5.372
Percentage of SellingAndMarketingExpense	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	8.0	7.7	7.3	9.4	8.8	9.3	10.5	8.1	11.6	9.4	12.2	7.8	13.8	12.3	11.6	11.5	11.0	-2.6	-8.3	13.3	11.2	13.4	12.9	12.8	14.0	15.3	16.8	14.8	14.5	14.1	16.6	23.5	13.9	14.3	14.8	17.3	19.1	28.2	19.5	14.4	13.2	13.0	14.3	11.8	10.9	10.8	11.9	10.6	10.6

Assets

us-gaap:Assets

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	1546	1503	1468	1430	1416	1416	1448	396	391	382	418	375	356	334	312	309	321	312	303	287	265	263	243	235	239	231	226	223	226	253	254	262	251	252	248	259	268	273	273	267	260	250	219
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	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	100.0

Liabilities

us-gaap:Liabilities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	216	211	203	193	195	190	184	60	62	61	56	62	62	56	51	47	46	47	49	44	48	59	49	48	51	47	44	43	37	36	41	55	47	47	42	43	46	56	57	57	53	54	49
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	100.0
Percentage of Assets	14.0	14.1	13.9	13.5	13.8	13.5	12.7	15.3	15.9	16.2	13.4	16.7	17.5	16.8	16.4	15.3	14.6	15.1	16.3	15.3	18.4	22.6	20.5	20.5	21.5	20.3	19.8	19.6	16.3	14.3	16.3	21.1	18.9	19.0	17.0	16.8	17.3	20.8	21.2	21.4	20.7	21.8	22.3

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	1546	1503	1468	1430	1416	1416	1448	396	391	382	418	375	356	334	312	309	321	312	303	287	265	263	243	235	239	231	226	223	226	253	254	262	251	252	248	259	268	273	273	267	260	250	219
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	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	100.0

Stockholders Equity

us-gaap:StockholdersEquity

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01	2010-01-02	2008-12-27
Value	1329	1292	1264	1237	1221	1225	1264	385	335	328	320	361	312	294	278	260	262	274	265	253	243	216	204	193	187	187	184	181	179	189	216	213	207	203	204	205	215	222	216	215	209	206	196	170	106	92
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	100.0	100.0
Percentage of Assets	86.0	85.9	86.1	86.5	86.2	86.5	87.3	0.0	84.7	84.1	83.8	86.6	83.3	82.5	83.2	83.6	84.7	85.4	84.9	83.7	84.7	81.6	77.4	79.5	79.5	78.5	79.7	80.2	80.4	83.7	85.7	83.7	78.9	81.1	81.0	83.0	83.2	82.7	79.2	78.8	78.6	79.3	78.2	77.7	0.0	0.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2016-12-31	2015-12-26
Value	-0.609	-0.042	0.089	0.163	0.235	-0.56	-0.034	0.33	0.32	0.273	0.218	0.218	-0.083	-0.127	-0.179	-0.09	-0.004	-0.002	-0.044
Percentage of StockholdersEquity	-0.0	-0.0	0.0	0.0	0.0	-0.0	-0.0	0.1	0.1	0.1	0.0	0.1	-0.0	-0.0	-0.1	-0.0	-0.0	-0.0	-0.0
Percentage of Assets	-0.0	-0.0	0.0	0.0	0.0	-0.0	-0.0	0.1	0.1	0.1	0.0	0.1	-0.0	-0.0	-0.1	-0.0	-0.0	-0.0	-0.0
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss	0.0	0.0	0.0	0.0	0.0	0.0	0.0	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:AccumulatedOtherComprehensiveIncome

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-29	2019-03-30	2018-12-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31	2011-01-01	2010-01-02	2008-12-27
Value	2.508	2.538	4.568	1.666	-0.065	-3.355	-0.598	-1.52	-2.513	-1.853	-1.855	-2.557	-2.557	-2.647	-2.729	-0.226	-2.124	-2.578	-6.046	-5.202	-2.769	0.612	1.272	1.549	2.072	1.373	-0.535
Percentage of StockholdersEquity	0.2	0.2	0.4	0.1	-0.0	-0.3	-0.0	-0.4	-0.7	-0.6	-0.6	0.0	-0.8	-0.9	-1.0	-0.1	-0.8	-0.9	-2.5	-2.8	-1.5	0.3	0.6	0.7	1.2	1.3	-0.6
Percentage of Assets	0.2	0.2	0.3	0.1	-0.0	-0.2	-0.0	0.0	-0.6	-0.5	-0.5	0.0	-0.7	-0.7	-0.8	-0.1	-0.7	-0.8	-2.1	-2.2	-1.2	0.2	0.5	0.6	0.9	0.0	0.0
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	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:AccumulatedTranslationAdjustment

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2016-12-31	2015-12-26
Value	3.117	2.58	4.479	1.503	-0.3	-2.795	-0.564	-2.197	-1.527	-1.482	-2.129	-2.129	-2.177	-2.215	0.34	-1.647	-2.347	-5.817	-4.948
Percentage of StockholdersEquity	0.2	0.2	0.4	0.1	-0.0	-0.2	-0.0	-0.7	-0.5	-0.5	0.0	-0.7	-0.7	-0.8	0.1	-0.6	-0.9	-2.4	-2.6
Percentage of Assets	0.2	0.2	0.3	0.1	-0.0	-0.2	-0.0	-0.6	-0.4	-0.4	0.0	-0.6	-0.6	-0.7	0.1	-0.5	-0.7	-2.0	-2.1
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment	0.0	0.0	0.0	0.0	0.0	0.0	0.0	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	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31	2011-01-01	2010-01-02	2008-12-27
Value	1241	1239	1233	1229	1223	1238	1269	374	259	256	251	369	247	241	237	234	255	271	258	251	244	238	236	225	218	189
Percentage of StockholdersEquity	93.4	95.9	97.6	99.4	100.2	101.0	100.4	97.0	77.4	78.0	78.6	102.2	79.3	82.1	85.2	90.1	97.3	111.6	138.1	140.0	118.0	110.5	112.7	132.1	204.5	204.7
Percentage of Assets	80.3	82.4	84.0	86.0	86.3	87.4	87.6	0.0	65.6	65.6	65.9	88.5	66.0	67.7	70.9	75.2	82.5	94.5	109.8	112.6	93.1	91.9	88.6	102.7	0.0	0.0
Percentage of Assets us-gaap:AdditionalPaidInCapital	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:CommonStock

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31	2011-01-01	2010-01-02	2008-12-27
Value	0.049	0.049	0.049	0.049	0.049	0.049	0.05	0.031	0.025	0.025	0.025	0.031	0.024	0.024	0.024	0.024	0.026	0.025	0.024	0.024	0.024	0.023	0.023	0.022	0.021	0.018
Percentage of StockholdersEquity	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	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	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0
Percentage of Assets us-gaap:CommonStock	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:RetainedEarnings

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31	2011-01-01	2010-01-02	2008-12-27
Value	85	50	26	6.248	-1.843	-9.267	-4.863	12	78	74	70	-6.773	67	55	43	26	9.113	-22.174	-66.209	-69.114	-37.996	-23.85	-28.315	-57.0	-112.948	-96.643
Percentage of StockholdersEquity	6.4	3.9	2.1	0.5	-0.2	-0.8	-0.4	3.3	23.4	22.6	22.0	-1.9	21.5	18.8	15.7	10.0	3.5	-9.1	-35.3	-38.5	-18.3	-11.1	-13.5	-33.4	-105.8	-104.2
Percentage of Assets	5.5	3.3	1.8	0.4	-0.1	-0.7	-0.3	0.0	19.8	19.0	18.4	-1.6	17.9	15.5	13.1	8.4	2.9	-7.7	-28.1	-31.0	-14.5	-9.2	-10.6	-25.9	0.0	0.0
Percentage of Assets us-gaap:RetainedEarnings	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Assets Current

us-gaap:AssetsCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	811	754	731	676	644	628	641	278	272	264	350	270	291	269	244	240	249	242	231	216	209	207	187	178	180	170	165	157	158	182	183	190	180	183	179	189	197	202	205	201	212	199	168
Percentage of AssetsCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	52.5	50.2	49.8	47.3	45.5	44.4	44.3	70.2	69.6	69.1	83.9	72.1	81.7	80.4	78.3	77.5	77.7	77.5	76.2	75.2	78.8	78.8	77.1	75.6	75.4	73.7	72.9	70.7	70.0	72.3	72.1	72.6	71.7	72.8	72.5	73.0	73.5	74.0	75.2	75.4	81.8	79.6	76.5

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03	2010-01-02	2008-12-27
Value	134	126	136	101	129	101	130	51	94	95	112	110	96	86	65	34	44	42	47	47	37	60	38	38	41	26	27	34	35	37	38	44	43	39	47	62	67	81	95	97	100	91	80	66	63	54	43	23
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	100.0
Percentage of Assets	8.7	8.4	9.3	7.1	9.1	7.2	9.0	12.9	24.0	24.9	26.9	29.5	27.0	25.7	21.1	11.3	13.7	13.6	15.6	16.4	14.1	22.8	15.9	16.2	17.4	11.4	12.3	15.5	15.7	15.0	15.2	17.0	17.4	15.5	19.1	24.2	25.1	30.0	35.0	36.6	38.5	36.5	0.0	30.2	0.0	0.0	0.0	0.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2017-12-31
Value	134	126	136	101	129	101	130	139	111	100	112	67
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
Percentage of Assets	8.7	8.4	9.3	7.1	9.1	7.2	9.0	0.0	0.0	0.0	26.9	0.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	174	141	149	131	137	149	123	56	51	45	64	50	50	54	59	62	41	46	48	39	41	54	44	37	37	44	39	26	26	33	32	31	22	32	19	21	30	40	38	29	45	43	44
Percentage of AccountsReceivableNetCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	11.3	9.4	10.2	9.2	9.7	10.5	8.5	14.4	13.2	11.8	15.4	13.5	14.1	16.3	18.9	20.2	12.8	15.0	16.0	13.7	15.5	20.5	18.3	16.1	15.7	19.2	17.2	11.7	11.5	13.2	12.7	12.0	9.1	12.8	8.0	8.2	11.2	14.7	14.2	11.0	17.4	17.4	20.2

Inventory Net

us-gaap:InventoryNet

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	206	200	191	184	171	160	176	69	66	63	96	61	58	54	53	52	55	48	41	38	39	41	49	47	48	41	37	35	35	37	37	34	36	39	43	39	43	45	48	52	51	45	43
Percentage of InventoryNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	13.4	13.4	13.0	12.9	12.1	11.3	12.2	17.6	17.0	16.6	23.2	16.5	16.5	16.2	17.0	17.1	17.1	15.6	13.7	13.5	14.8	15.6	20.5	20.3	20.2	17.9	16.5	15.7	15.8	14.9	14.9	13.1	14.5	15.6	17.5	15.3	16.0	16.6	17.9	19.6	19.7	18.2	19.6

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	19	19	17	19	23	26	21	7.398	7.955	7.235	14	6.14	7.07	9.851	6.905	6.234	9.91	8.887	5.925	5.667	5.835	6.793	6.06	6.592	6.651	6.842	9.493	9.289	9.356	9.911	8.972	10	7.534	8.221	7.141	7.492	10	10	10	8.119	3.514	6.367	2.986
Percentage of PrepaidExpenseAndOtherAssetsCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	1.2	1.3	1.2	1.4	1.7	1.9	1.5	1.9	2.0	1.9	3.5	1.6	2.0	2.9	2.2	2.0	3.1	2.8	2.0	2.0	2.2	2.6	2.5	2.8	2.8	3.0	4.2	4.2	4.1	3.9	3.5	4.0	3.0	3.3	2.9	2.9	3.8	3.7	3.9	3.0	1.4	2.5	1.4

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	138	135	132	138	138	136	136	100	98	95	52	95	91	90	89	89	85	87	87	86	85	83	80	80	80	80	78	78	80	75	73	72	70	66	63	62	63	61	52
Percentage of PropertyPlantAndEquipmentGross	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	9.0	9.0	9.0	9.7	9.8	9.7	9.4	25.3	25.2	24.9	12.5	25.4	25.7	27.0	28.8	28.8	26.5	28.0	28.8	30.1	32.2	31.5	33.2	34.2	33.5	34.6	34.7	35.1	35.3	29.7	28.8	27.7	28.1	26.2	25.7	24.3	23.7	22.5	19.6

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

onto:ComputerEquipmentAndSoftware

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	15	15	15	16	16	16	15	7.906
Percentage of PropertyPlantAndEquipmentGross	11.3	11.6	11.7	11.8	12.1	11.8	11.6	15.1
Percentage of Assets	1.0	1.0	1.1	1.1	1.2	1.1	1.1	1.9
Percentage of Assets onto:ComputerEquipmentAndSoftware	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:FurnitureAndFixtures

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	3.985	3.883	4.013	4.305	4.164	4.134	3.968	2.276	2.471	2.578	3.226	2.551	2.494	2.461	2.47	2.42	2.289	2.44	2.419	2.282	2.357	2.31	2.259	2.266	2.264	2.258	2.241	2.225	2.343	2.362	2.298	2.308	2.359	2.299	2.261	2.228	2.458	2.307	2.285
Percentage of PropertyPlantAndEquipmentGross	2.9	2.9	3.0	3.1	3.0	3.0	2.9	2.3	2.5	2.7	6.2	2.7	2.7	2.7	2.7	2.7	2.7	2.8	2.8	2.6	2.8	2.8	2.8	2.8	2.8	2.8	2.9	2.8	2.9	3.1	3.1	3.2	3.3	3.5	3.5	3.5	3.9	3.7	4.4
Percentage of Assets	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.6	0.6	0.7	0.8	0.7	0.7	0.7	0.8	0.8	0.7	0.8	0.8	0.8	0.9	0.9	0.9	1.0	0.9	1.0	1.0	1.0	1.0	0.9	0.9	0.9	0.9	0.9	0.9	0.9	0.9	0.8	0.9
Percentage of Assets us-gaap:FurnitureAndFixtures	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:LandAndBuilding

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	48	47	47	46	46	46	47	2.584
Percentage of PropertyPlantAndEquipmentGross	34.8	35.3	35.8	33.9	33.9	34.3	34.6	4.9
Percentage of Assets	3.1	3.2	3.2	3.3	3.3	3.3	3.3	0.6
Percentage of Assets us-gaap:LandAndBuilding	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:LeaseholdImprovements

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2018-12-31
Value	13	13	12	13	13	13	13	3.599	1.774	9.448
Percentage of PropertyPlantAndEquipmentGross	9.9	9.7	9.7	9.7	9.6	9.6	9.6	3.6	1.8	18.1
Percentage of Assets	0.9	0.9	0.9	0.9	0.9	0.9	0.9	0.9	0.5	2.3
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

us-gaap:MachineryAndEquipment

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	57	54	52	57	57	56	56	40	37	36	29	39	39	40	39	36	35	37	37	35	36	33	33	32	32	31	30	29	31	28	26	29	28	25	23	21	22	21	14
Percentage of PropertyPlantAndEquipmentGross	41.2	40.5	39.8	41.5	41.5	41.3	41.4	40.0	38.1	38.1	55.7	41.8	43.2	44.5	44.0	40.8	41.7	42.5	42.4	41.2	42.2	40.8	41.2	41.0	40.0	38.7	38.7	37.6	39.3	37.4	36.4	40.8	40.1	38.0	36.1	34.2	35.4	35.3	28.1
Percentage of Assets	3.7	3.6	3.6	4.0	4.1	4.0	3.9	10.1	9.6	9.5	7.0	10.6	11.1	12.0	12.7	11.7	11.0	11.9	12.2	12.4	13.6	12.9	13.7	14.0	13.4	13.4	13.4	13.2	13.9	11.1	10.5	11.3	11.3	10.0	9.3	8.3	8.4	8.0	5.5
Percentage of Assets us-gaap:MachineryAndEquipment	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	50	47	44	45	43	39	38	47	45	44	33	47	48	47	46	44	42	45	44	42	41	39	37	36	34	32	30	28	29	27	26	25	24	22	20	19	20	19	16
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	3.3	3.2	3.1	3.2	3.0	2.8	2.6	12.0	11.7	11.7	8.0	12.7	13.6	14.1	14.8	14.3	13.3	14.6	14.6	14.7	15.6	15.0	15.5	15.3	14.3	14.1	13.6	12.9	13.0	11.1	10.3	9.6	9.6	8.9	8.4	7.6	7.7	7.1	6.3

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2017-12-31	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	12	12	12	13	13	13	9.284	0.387	0.289	0.387	0.289	0.387	1.94	0.0	0.0	0.0	0.0	0.0	0.0	0.024	0.025	0.026	0.025	0.038	0.102	0.103	0.107	0.108	0.113	0.195	0.195	0.198	0.196	0.193	0.195	0.192	0.566	0.329	0.401	0.174	0.388	0.368	0.41
Percentage of AmortizationOfIntangibleAssets	100.0	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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	0.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	88	87	87	92	95	96	98	52	52	50	18	47	43	43	43	44	42	42	43	44	44	43	43	44	45	47	47	49	50	47	47	47	46	43	42	43	43	42	38	35	35	37	35
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	100.0
Percentage of Assets	5.7	5.8	6.0	6.5	6.7	6.8	6.8	13.2	13.5	13.2	4.5	12.8	12.1	12.9	14.0	14.5	13.2	13.5	14.2	15.4	16.7	16.5	17.7	18.9	19.2	20.5	21.1	22.2	22.4	18.7	18.5	18.0	18.5	17.4	17.3	16.7	16.0	15.4	14.0	13.3	13.6	14.9	16.0

Goodwill

us-gaap:Goodwill

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-01-01
Value	313	313	306	307	307	307	307	26	26	26	22	26	10	10	10	10	10	9.756	9.227	8.94	9.665	9.68	9.592	9.415	9.678	9.59	9.391	10	11	11	11	11	11	11	11	11	11	10	11	11	0.0
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	0.0
Percentage of Assets	20.3	20.9	20.9	21.5	21.7	21.7	21.2	6.6	6.7	6.9	5.4	7.0	3.0	3.2	3.4	3.3	3.1	3.1	3.0	3.1	3.6	3.7	3.9	4.0	4.0	4.1	4.1	4.7	4.9	4.6	4.7	4.5	4.6	4.5	4.4	4.4	4.1	3.9	4.4	4.5	0.0

us-gaap:Goodwill us-gaap:BusinessAcquisition

onto:InspectrologyLLC

Period End	2020-12-31
Value	7.259
Percentage of Goodwill	0.0
Percentage of Assets	0.0
Percentage of Assets onto:InspectrologyLLC	0.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2017-12-30	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	305	318	318	330	344	358	371	25	25	26	7.448	27	2.206	2.403	2.886	3.326	4.294	5.255	6.28	7.139	7.864	8.559	9.226	9.938	10	11	12	13	14	4.836	5.165	5.972
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
Percentage of Assets	19.8	21.2	21.7	23.1	24.3	25.3	25.7	6.3	6.6	7.0	1.8	7.3	0.7	1.0	1.2	1.5	1.9	2.3	2.5	2.8	3.0	3.4	3.7	4.0	4.2	4.3	4.5	5.0	5.4	1.9	2.1	2.7

us-gaap:IntangibleAssetsNetExcludingGoodwill us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:InProcessResearchAndDevelopment

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-29
Value	46	46	46	46	46	46	46	0.9	0.9	1.4	1.4
Percentage of IntangibleAssetsNetExcludingGoodwill	15.2	14.6	14.6	14.1	13.5	13.0	12.5	3.6	3.5	5.3	5.1
Percentage of Assets	3.0	3.1	3.2	3.3	3.3	3.3	3.2	0.2	0.2	0.4	0.4
Percentage of Assets us-gaap:InProcessResearchAndDevelopment	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	259	271	271	284	297	311	325	4.101	4.136	3.171	2.206	2.258	0.309	0.361	0.412	0.552	0.989	1.425	1.867	2.403	2.886	3.326	4.294	5.255	6.28	7.139	7.864	8.559	9.226	9.938	10	11	12	14
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	16.8	18.1	18.5	19.9	21.0	22.0	22.5	1.2	1.2	1.0	0.7	0.7	0.1	0.1	0.1	0.2	0.4	0.6	0.8	1.0	1.2	1.5	1.9	2.3	2.5	2.8	3.0	3.4	3.7	4.0	4.2	4.3	4.5	5.4

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	51	52	48	50	52	55	58	0.478	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.012	0.066	0.147	0.232	0.31	0.392	0.551	0.71	0.895	1.05	1.196	1.6
Percentage of FiniteLivedIntangibleAssetsNet	19.8	19.4	17.9	17.7	17.7	17.8	17.9	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.3	1.3	2.3	3.2	3.9	4.6	6.0	7.1	8.2	9.0	9.8	11.1
Percentage of Assets	3.3	3.5	3.3	3.5	3.7	3.9	4.0	0.1	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.1	0.1	0.1	0.2	0.2	0.3	0.3	0.4	0.4	0.6
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	0.0	0.0	0.0	0.0

us-gaap:DevelopedTechnologyRights

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	199	210	216	226	237	248	258	6.485	4.101	4.136	3.171	2.206	2.241	0.276	0.311	0.346	0.469	0.889	1.31	1.711	2.205	2.646	3.045	3.959	4.824	5.726	6.459	7.063	7.635	8.101	8.611	9.423	9.589	10	11
Percentage of FiniteLivedIntangibleAssetsNet	76.9	77.4	79.5	79.7	79.7	79.6	79.6	0.0	100.0	100.0	100.0	100.0	99.2	89.3	86.1	84.0	85.0	89.9	91.9	91.6	91.8	91.7	91.6	92.2	91.8	91.2	90.5	89.8	89.2	87.8	86.6	85.8	82.6	81.8	80.8
Percentage of Assets	12.9	14.0	14.7	15.8	16.8	17.5	17.9	1.6	1.2	1.2	1.0	0.7	0.7	0.1	0.1	0.1	0.2	0.3	0.5	0.7	0.9	1.1	1.3	1.8	2.1	2.3	2.5	2.7	3.0	3.2	3.5	3.6	3.6	3.7	4.4
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	0.0	0.0	0.0	0.0

us-gaap:TrademarksAndTradeNames

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	8.375	8.7	7.124	7.42	7.715	8.01	8.305	0.485
Percentage of FiniteLivedIntangibleAssetsNet	3.2	3.2	2.6	2.6	2.6	2.6	2.6	0.0
Percentage of Assets	0.5	0.6	0.5	0.5	0.5	0.6	0.6	0.1
Percentage of Assets us-gaap:TrademarksAndTradeNames	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	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30
Value	20	21	19	20	21	22	23	9.996	10	11
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	1.3	1.5	1.3	1.4	1.5	1.6	1.6	2.5	2.8	3.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	24	26	21	21	22	23	27	0.441	0.446	0.44	5.506	0.582	0.456	0.332	0.345	0.413	0.389	0.399	0.405	0.474	0.526	0.549	0.525	0.533	0.497	0.541	0.554	0.559	0.593	0.679	0.699	0.696	0.723	0.68	0.829	0.924	0.885	0.866	0.892	1.042	1.091	1.139	1.235
Percentage of OtherAssetsNoncurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	1.6	1.8	1.5	1.5	1.6	1.7	1.9	0.1	0.1	0.1	1.3	0.2	0.1	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	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.4	0.3	0.3	0.3	0.4	0.4	0.5	0.6

Accounts Payable Current

us-gaap:AccountsPayableCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	46	45	40	37	34	32	27	17	19	18	16	16	20	18	18	13	17	14	18	11	8.562	11	13	11	15	13	11	10	5.948	6.982	7.409	10	11	8.63	6.362	6.398	5.329	8.988	10	7.975	11	14	11
Percentage of AccountsPayableCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	3.0	3.0	2.7	2.6	2.4	2.3	1.9	4.4	5.0	4.9	4.1	4.4	5.9	5.7	5.9	4.5	5.3	4.8	6.1	3.9	3.2	4.2	5.4	5.0	6.6	5.8	5.3	4.6	2.6	2.8	2.9	4.1	4.8	3.4	2.6	2.5	2.0	3.3	3.8	3.0	4.6	5.8	5.2

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	40	28	37	31	35	29	26	13
Percentage of AccruedLiabilitiesCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	2.6	1.9	2.5	2.2	2.5	2.1	1.8	3.3

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2017-12-30
Value	21	21	14	15	15	15	12	7.37	9.865	10	6.767	8.99	7.408
Percentage of ContractWithCustomerLiabilityCurrent	100.0	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	1.4	1.4	1.0	1.1	1.1	1.1	0.9	1.9	2.5	2.8	1.6	2.4	2.4

Liabilities Current

us-gaap:LiabilitiesCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	133	126	120	97	98	94	85	49	50	50	44	59	59	53	47	44	44	45	47	42	45	57	47	45	47	42	39	38	28	31	35	48	39	39	30	30	32	40	41	40	36	35	32
Percentage of LiabilitiesCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	8.6	8.4	8.2	6.8	7.0	6.7	5.9	12.6	13.0	13.2	10.8	15.9	16.6	15.8	15.3	14.2	13.7	14.5	15.7	14.6	17.3	21.7	19.5	19.2	19.9	18.4	17.6	17.1	12.7	12.4	14.1	18.6	15.8	15.9	12.1	11.8	12.0	14.9	15.1	15.3	13.9	14.0	14.8

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29
Value	5121000.0	5605000.0	4470000.0	4129000.0	4603000.0	4798000.0	4906000.0	2773000.0	2845000.0
Percentage of OperatingLeaseLiabilityCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	0.3	0.4	0.3	0.3	0.3	0.3	0.3	0.7	0.7

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2013-12-28
Value	1320000.0	942000.0	743000.0	553000.0	632000.0	507000.0	491000.0	1528000.0	1326000.0	1202000.0	611000.0	1181000.0	1637000.0	1180000.0	1286000.0	1039000.0	1898000.0	1373000.0	1435000.0	1249000.0	2110000.0	3516000.0	2918000.0	2692000.0	2960000.0	2099000.0	2061000.0	2152000.0	2678000.0
Percentage of OtherAccruedLiabilitiesCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	0.0	0.0	0.0	0.0	0.4	0.3	0.3	0.1	0.3	0.5	0.4	0.4	0.3	0.6	0.4	0.5	0.4	0.8	1.3	1.2	1.1	1.2	0.9	0.9	1.0	1.0

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	24	30	28	12	13	17	19	8.702	7.308	6.859	7.543	9.421	8.47	8.508	7.12	7.249	7.704	7.368	7.293	8.047	8.63	9.333	8.978	8.878	9.422	8.221	8.11	8.265	7.834	8.348	8.185	7.936	8.043	8.929	8.385	7.822	9.107	14	14	16	8.939	7.529	7.293
Percentage of OtherLiabilitiesCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	1.6	2.0	1.9	0.9	1.0	1.2	1.3	2.2	1.9	1.8	1.8	2.5	2.4	2.5	2.3	2.3	2.4	2.4	2.4	2.8	3.2	3.5	3.7	3.8	3.9	3.6	3.6	3.7	3.5	3.3	3.2	3.0	3.2	3.5	3.4	3.0	3.4	5.3	5.2	6.3	3.4	3.0	3.3

Taxes Payable Current

us-gaap:TaxesPayableCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-01-01
Value	1076000.0	2543000.0	4109000.0	639000.0	217000.0	3689000.0	2783000.0	776000.0	751000.0	723000.0	701000.0	635000.0	615000.0	599000.0	1171000.0	2334000.0	2280000.0	2280000.0	2135000.0	2430000.0	2430000.0	2411000.0	2401000.0	0
Percentage of TaxesPayableCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0
Percentage of Assets	0.1	0.2	0.3	0.0	0.0	0.3	0.2	0.3	0.3	0.3	0.3	0.3	0.2	0.2	0.4	0.9	0.9	0.9	0.8	0.9	0.9	0.9	0.9	0.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-29	2018-09-29	2017-12-30
Value	55	56	55	64	66	66	67	0.158	0.163	0.166	0.162	0.172	0.179
Percentage of DeferredIncomeTaxLiabilitiesNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	3.6	3.7	3.8	4.5	4.7	4.7	4.6	0.0	0.0	0.0	0.0	0.0	0.1

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	27	28	27	31	30	29	31	0.217	0.218	0.22	11	0.219	0.511	0.512	0.535	0.521	0.377	0.375	0.377	0.353	0.866	0.878	0.859	0.878	1.018	1.226	1.348	1.279	1.673	1.603	1.645	1.615	2.064	2.07	2.011	2.14	1.978	2.078	2.151	2.813	5.228	5.248	3.912
Percentage of OtherLiabilitiesNoncurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	1.8	1.9	1.9	2.2	2.2	2.1	2.2	0.1	0.1	0.1	2.7	0.1	0.1	0.2	0.2	0.2	0.1	0.1	0.1	0.1	0.3	0.3	0.4	0.4	0.4	0.5	0.6	0.6	0.7	0.6	0.6	0.6	0.8	0.8	0.8	0.8	0.7	0.8	0.8	1.1	2.0	2.1	1.8

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29
Value	16	17	16	17	18	18	19	7.193	8.017
Percentage of OperatingLeaseLiabilityNoncurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	1.1	1.1	1.1	1.2	1.3	1.3	1.4	1.8	2.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

Period End	2020-12-26
Value	4446000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	100.0
Percentage of Assets	0.3

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

Period End	2020-12-26
Value	3460000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree	100.0
Percentage of Assets	0.2

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

Period End	2020-12-26
Value	2943000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour	100.0
Percentage of Assets	0.2

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

Period End	2020-12-26
Value	2912000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive	100.0
Percentage of Assets	0.2

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

Period End	2020-12-26
Value	5295000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	100.0
Percentage of Assets	0.4

Operating Lease Liability

us-gaap:OperatingLeaseLiability

Period End	2020-12-26	2019-12-31	2019-09-28	2019-06-29	2019-03-30
Value	20	24	9.966	10	11
Percentage of OperatingLeaseLiability	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	1.4	1.7	2.5	2.8	3.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

Period End	2020-12-26
Value	24
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue	100.0
Percentage of Assets	1.7

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

Period End	2020-12-26
Value	3317000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	100.0
Percentage of Assets	0.2

Stockholders Equity

us-gaap:StockholdersEquity

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01	2010-01-02	2008-12-27
Value	1329	1292	1264	1237	1221	1225	1264	385	335	328	320	361	312	294	278	260	262	274	265	253	243	216	204	193	187	187	184	181	179	189	216	213	207	203	204	205	215	222	216	215	209	206	196	170	106	92
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	100.0	100.0
Percentage of Assets	86.0	85.9	86.1	86.5	86.2	86.5	87.3	0.0	84.7	84.1	83.8	86.6	83.3	82.5	83.2	83.6	84.7	85.4	84.9	83.7	84.7	81.6	77.4	79.5	79.5	78.5	79.7	80.2	80.4	83.7	85.7	83.7	78.9	81.1	81.0	83.0	83.2	82.7	79.2	78.8	78.6	79.3	78.2	77.7	0.0	0.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2016-12-31	2015-12-26
Value	-0.609	-0.042	0.089	0.163	0.235	-0.56	-0.034	0.33	0.32	0.273	0.218	0.218	-0.083	-0.127	-0.179	-0.09	-0.004	-0.002	-0.044
Percentage of StockholdersEquity	-0.0	-0.0	0.0	0.0	0.0	-0.0	-0.0	0.1	0.1	0.1	0.0	0.1	-0.0	-0.0	-0.1	-0.0	-0.0	-0.0	-0.0
Percentage of Assets	-0.0	-0.0	0.0	0.0	0.0	-0.0	-0.0	0.1	0.1	0.1	0.0	0.1	-0.0	-0.0	-0.1	-0.0	-0.0	-0.0	-0.0
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss	0.0	0.0	0.0	0.0	0.0	0.0	0.0	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:AccumulatedOtherComprehensiveIncome

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-29	2019-03-30	2018-12-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31	2011-01-01	2010-01-02	2008-12-27
Value	2.508	2.538	4.568	1.666	-0.065	-3.355	-0.598	-1.52	-2.513	-1.853	-1.855	-2.557	-2.557	-2.647	-2.729	-0.226	-2.124	-2.578	-6.046	-5.202	-2.769	0.612	1.272	1.549	2.072	1.373	-0.535
Percentage of StockholdersEquity	0.2	0.2	0.4	0.1	-0.0	-0.3	-0.0	-0.4	-0.7	-0.6	-0.6	0.0	-0.8	-0.9	-1.0	-0.1	-0.8	-0.9	-2.5	-2.8	-1.5	0.3	0.6	0.7	1.2	1.3	-0.6
Percentage of Assets	0.2	0.2	0.3	0.1	-0.0	-0.2	-0.0	0.0	-0.6	-0.5	-0.5	0.0	-0.7	-0.7	-0.8	-0.1	-0.7	-0.8	-2.1	-2.2	-1.2	0.2	0.5	0.6	0.9	0.0	0.0
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	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:AccumulatedTranslationAdjustment

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2016-12-31	2015-12-26
Value	3.117	2.58	4.479	1.503	-0.3	-2.795	-0.564	-2.197	-1.527	-1.482	-2.129	-2.129	-2.177	-2.215	0.34	-1.647	-2.347	-5.817	-4.948
Percentage of StockholdersEquity	0.2	0.2	0.4	0.1	-0.0	-0.2	-0.0	-0.7	-0.5	-0.5	0.0	-0.7	-0.7	-0.8	0.1	-0.6	-0.9	-2.4	-2.6
Percentage of Assets	0.2	0.2	0.3	0.1	-0.0	-0.2	-0.0	-0.6	-0.4	-0.4	0.0	-0.6	-0.6	-0.7	0.1	-0.5	-0.7	-2.0	-2.1
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment	0.0	0.0	0.0	0.0	0.0	0.0	0.0	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	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31	2011-01-01	2010-01-02	2008-12-27
Value	1241	1239	1233	1229	1223	1238	1269	374	259	256	251	369	247	241	237	234	255	271	258	251	244	238	236	225	218	189
Percentage of StockholdersEquity	93.4	95.9	97.6	99.4	100.2	101.0	100.4	97.0	77.4	78.0	78.6	102.2	79.3	82.1	85.2	90.1	97.3	111.6	138.1	140.0	118.0	110.5	112.7	132.1	204.5	204.7
Percentage of Assets	80.3	82.4	84.0	86.0	86.3	87.4	87.6	0.0	65.6	65.6	65.9	88.5	66.0	67.7	70.9	75.2	82.5	94.5	109.8	112.6	93.1	91.9	88.6	102.7	0.0	0.0
Percentage of Assets us-gaap:AdditionalPaidInCapital	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:CommonStock

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31	2011-01-01	2010-01-02	2008-12-27
Value	0.049	0.049	0.049	0.049	0.049	0.049	0.05	0.031	0.025	0.025	0.025	0.031	0.024	0.024	0.024	0.024	0.026	0.025	0.024	0.024	0.024	0.023	0.023	0.022	0.021	0.018
Percentage of StockholdersEquity	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	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	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0
Percentage of Assets us-gaap:CommonStock	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:RetainedEarnings

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31	2011-01-01	2010-01-02	2008-12-27
Value	85	50	26	6.248	-1.843	-9.267	-4.863	12	78	74	70	-6.773	67	55	43	26	9.113	-22.174	-66.209	-69.114	-37.996	-23.85	-28.315	-57.0	-112.948	-96.643
Percentage of StockholdersEquity	6.4	3.9	2.1	0.5	-0.2	-0.8	-0.4	3.3	23.4	22.6	22.0	-1.9	21.5	18.8	15.7	10.0	3.5	-9.1	-35.3	-38.5	-18.3	-11.1	-13.5	-33.4	-105.8	-104.2
Percentage of Assets	5.5	3.3	1.8	0.4	-0.1	-0.7	-0.3	0.0	19.8	19.0	18.4	-1.6	17.9	15.5	13.1	8.4	2.9	-7.7	-28.1	-31.0	-14.5	-9.2	-10.6	-25.9	0.0	0.0
Percentage of Assets us-gaap:RetainedEarnings	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Common Stock Value

us-gaap:CommonStockValue

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	49000.0	49000.0	49000.0	49000.0	49000.0	49000.0	50000.0	25000.0	25000.0	25000.0	31000.0	24000.0	24000.0	24000.0	24000.0	26000.0	26000.0	25000.0	25000.0	25000.0	25000.0	25000.0	24000.0	24000.0	24000.0	24000.0	24000.0	24000.0	24000.0	24000.0	24000.0	24000.0	23000.0	23000.0	23000.0	23000.0	23000.0	23000.0	23000.0	23000.0	23000.0	23000.0	22000.0
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	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	0.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2015-12-26
Value	1241	1239	1233	1229	1223	1238	1269	259	256	251	369	247	241	237	234	255	278	275	273	271	268	258
Percentage of AdditionalPaidInCapitalCommonStock	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of Assets	80.3	82.4	84.0	86.0	86.3	87.4	87.6	65.6	65.6	65.9	88.5	66.0	67.7	70.9	75.2	82.5	86.7	88.3	90.2	94.5	101.1	109.8

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	85	50	26	6.248	-1.843	-9.267	-4.863	78	74	70	-6.773	67	55	43	26	9.113	-1.685	-7.449	-15.737	-22.174	-48.828	-56.711	-62.742	-66.209	-64.396	-65.214	-66.558	-69.114	-64.475	-35.813	-36.401	-37.996	-38.552	-33.998	-29.432	-23.85	-20.203	-22.106	-26.612	-28.315	-27.784	-35.403	-57.0
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	100.0
Percentage of Assets	5.5	3.3	1.8	0.4	-0.1	-0.7	-0.3	19.8	19.0	18.4	-1.6	17.9	15.5	13.1	8.4	2.9	-0.5	-2.4	-5.2	-7.7	-18.4	-21.5	-25.7	-28.1	-26.9	-28.2	-29.4	-31.0	-28.4	-14.1	-14.3	-14.5	-15.3	-13.5	-11.9	-9.2	-7.5	-8.1	-9.7	-10.6	-10.7	-14.1	-25.9

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	2508000.0	2538000.0	4568000.0	1666000.0	-65000.0	-3355000.0	-598000.0	-2513000.0	-1853000.0	-1855000.0	-1263000.0	-2557000.0	-2647000.0	-2729000.0	-226000.0	-2124000.0	-2578000.0	-3357000.0	-4110000.0	-6046000.0	-3111000.0	-3631000.0	-4215000.0	-5202000.0	-4707000.0	-4489000.0	-4467000.0	-2769000.0	-647000.0	1005000.0	823000.0	612000.0	452000.0	-710000.0	-667000.0	1272000.0	1736000.0	627000.0	1795000.0	1549000.0	2662000.0	3445000.0	2072000.0
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	100.0
Percentage of Assets	0.2	0.2	0.3	0.1	-0.0	-0.2	-0.0	-0.6	-0.5	-0.5	-0.3	-0.7	-0.7	-0.8	-0.1	-0.7	-0.8	-1.1	-1.4	-2.1	-1.2	-1.4	-1.7	-2.2	-2.0	-1.9	-2.0	-1.2	-0.3	0.4	0.3	0.2	0.2	-0.3	-0.3	0.5	0.6	0.2	0.7	0.6	1.0	1.4	0.9

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31
Value	6.107	4.89	4.253	4.775	3.955	1.555	3.399	1.673	3.2	2.163	3.114	3.153	3.212	2.679	2.338
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
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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31
Value	6.107	4.89	4.253	4.775	3.955	1.555	3.399	1.673	3.2	2.163	3.114	3.153	3.212	2.679	2.338
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
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
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

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02
Value	25	50	33	25	37	8.898	-6.754	15	1.168	11	-1.447	-1.566	-0.856	19	24	26	32	48	5.219	5.126	9.505	-1.283	-5.874	8.914	-4.98	0.123	-4.692	1.482	13	-8.437	-8.521	11	10	5.105	-2.936	18	9.745	15	10	2.94	11
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	13.1	30.1	21.4	20.5	28.1	6.4	-5.6	24.0	1.6	18.5	-2.1	-2.6	-1.3	25.9	31.9	29.6	39.7	65.3	-5.3	9.0	20.8	-2.6	-11.7	22.5	-18.4	0.3	-9.1	3.2	33.4	-24.4	-34.7	37.1	24.1	9.6	-5.3	41.1	16.7	23.6	16.9	6.4	21.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02
Value	-16.049	-60.349	1.108	-57.055	9.948	-2.6	-0.981	12	-43.727	1.472	-1.22	-9.167	-15.964	-4.676	-15.346	-5.845	21	-14.743	11	-3.77	4.885	0.056	-0.441	-4.013	1.632	-2.069	-3.603	-1.499	-3.647	-0.458	-2.178	-11.167	-24.735	-14.917	-0.974	-24.716	-0.446	-1.121	-0.816	-1.168	-1.294
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	-8.3	-35.7	0.7	-45.1	7.4	-1.9	-0.8	20.3	-59.8	2.4	-1.8	-15.1	-23.8	-6.1	-20.0	-6.6	26.3	-19.7	-11.3	-6.7	10.7	0.1	-0.9	-10.1	6.0	-4.3	-7.0	-3.2	-9.3	-1.3	-8.9	-36.9	-56.3	-28.0	-1.8	-54.6	-0.8	-1.7	-1.3	-2.5	-2.4

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02
Value	-3.877	0.593	-0.566	2.399	-20.52	-35.015	-1.866	0.122	-0.158	-1.112	1.462	-1.342	0.745	-0.487	0.726	-0.091	-22.918	-2.392	-25.398	0.367	0.856	-0.301	-0.352	-5.393	1.442	0.92	2.356	0.825	-5.053	0.948	-4.215	-4.014	-0.693	-3.759	1.657	3.623	0.051	-3.157	3.63	1.121	-1.399
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	-2.0	0.4	-0.4	1.9	-15.2	-25.0	-1.5	0.2	-0.2	-1.8	2.2	-2.2	1.1	-0.6	0.9	-0.1	-27.8	-3.2	25.9	0.6	1.9	-0.6	-0.7	-13.6	5.3	1.9	4.6	1.8	-12.9	2.7	-17.2	-13.3	-1.6	-7.1	3.0	8.0	0.1	-4.9	5.8	2.4	-2.6

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30
Value	7.768	-10.27	35	-27.782	28	-29.353	-9.029	27	-43.026	11	-1.177	-12.22	-15.739	14	9.902	20	31	32	-9.142
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	4.0	-6.1	22.6	-22.0	20.8	-21.0	-7.5	44.1	-58.8	19.2	-1.7	-20.1	-23.5	19.3	12.9	22.9	37.7	44.1	9.3

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-06-30	2019-03-31
Value	33	-1.329	5.368	-5.233	18	-4.939	-2.527	13
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet	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	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02
Value	25	50	33	25	37	8.898	-6.754	15	1.168	11	-1.447	-1.566	-0.856	19	24	26	32	48	5.219	5.126	9.505	-1.283	-5.874	8.914	-4.98	0.123	-4.692	1.482	13	-8.437	-8.521	11	10	5.105	-2.936	18	9.745	15	10	2.94	11
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	13.1	30.1	21.4	20.5	28.1	6.4	-5.6	24.0	1.6	18.5	-2.1	-2.6	-1.3	25.9	31.9	29.6	39.7	65.3	-5.3	9.0	20.8	-2.6	-11.7	22.5	-18.4	0.3	-9.1	3.2	33.4	-24.4	-34.7	37.1	24.1	9.6	-5.3	41.1	16.7	23.6	16.9	6.4	21.0

Net Income Loss

us-gaap:NetIncomeLoss

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-31	2018-12-29	2018-09-30	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02	2010-07-03
Value	35	24	19	8.091	7.424	-4.404	-17.752	6.56	4.211	5.526	3.93	7.576	2.973	8.082	12	7.187	11	17	15	13	10	5.764	8.288	5.352	26	7.883	6.031	3.467	-1.813	0.818	1.344	2.556	-4.639	-28.662	0.588	1.595	0.556	-4.554	-4.566	-5.582	-3.647	1.903	4.506	1.703	-0.531	7.619	11	10	26	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	100.0	100.0	100.0	100.0	100.0	100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	18.1	14.2	12.8	6.4	5.5	-3.1	-14.7	10.4	5.8	9.0	5.8	12.4	4.4	12.9	15.6	11.9	15.1	19.9	20.7	18.1	-11.0	10.2	12.9	9.0	45.1	13.4	10.8	7.3	-4.2	1.8	2.8	5.1	-11.7	-105.6	1.2	3.1	1.2	-11.7	-13.2	-22.7	-12.0	4.3	8.5	3.1	-1.2	13.1	17.2	16.9	56.6	22.9	22.8

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31
Value	35	24	8.091	7.424	-4.404	6.56	4.211	5.526	3.93	7.576	2.973	12	11	17	16
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	108.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	18.1	14.2	6.4	5.5	-3.1	10.4	5.8	9.0	5.8	12.4	4.4	15.6	15.1	19.9	19.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax 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

Profit Loss

us-gaap:ProfitLoss

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30
Value	35	24	19	8.091	7.424	-4.404	-17.752	6.56	4.211	5.526	3.93	7.576	2.973	12	11	17	16	13	10	5.764
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
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax	18.1	14.2	12.8	6.4	5.5	-3.1	-14.7	10.4	5.8	9.0	5.8	12.4	4.4	15.6	15.1	19.9	19.9	18.1	-11.0	10.2

Share Based Compensation

us-gaap:ShareBasedCompensation

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02
Value	6.107	4.89	4.679	4.253	4.775	3.955	5.194	1.555	3.399	1.673	3.2	2.163	3.114	3.153	3.212	2.679	2.338	-1.105	2.044	2.448	2.163	2.164	2.234	2.0	1.743	1.689	1.584	1.682	1.411	1.571	1.637	1.705	1.776	1.634	1.762	2.704	1.751	1.457	1.355	1.481	1.593	1.461	1.727	0.969	0.955	0.822	0.209	0.61
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	100.0	100.0	100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02
Value	-16.049	-60.349	1.108	-57.055	9.948	-2.6	-0.981	12	-43.727	1.472	-1.22	-9.167	-15.964	-4.676	-15.346	-5.845	21	-14.743	11	-3.77	4.885	0.056	-0.441	-4.013	1.632	-2.069	-3.603	-1.499	-3.647	-0.458	-2.178	-11.167	-24.735	-14.917	-0.974	-24.716	-0.446	-1.121	-0.816	-1.168	-1.294
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	-8.3	-35.7	0.7	-45.1	7.4	-1.9	-0.8	20.3	-59.8	2.4	-1.8	-15.1	-23.8	-6.1	-20.0	-6.6	26.3	-19.7	-11.3	-6.7	10.7	0.1	-0.9	-10.1	6.0	-4.3	-7.0	-3.2	-9.3	-1.3	-8.9	-36.9	-56.3	-28.0	-1.8	-54.6	-0.8	-1.7	-1.3	-2.5	-2.4

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02
Value	5.683	3.875	0.438	0.782	1.612	0.997	2.601	1.547	1.629	1.334	4.182	1.32	4.132	4.544	1.181	0.442	1.319	7.868	2.862	0.806	1.489	0.047	0.65	0.821	1.918	0.61	0.481	0.322	0.541	0.502	2.992	-1.013	1.62	2.193	2.173	1.546	0.973	0.997	1.285	1.07	1.768	0.867	0.673	0.336	0.991	0.755	1.143	1.262
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	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	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02
Value	-3.877	0.593	-0.566	2.399	-20.52	-35.015	-1.866	0.122	-0.158	-1.112	1.462	-1.342	0.745	-0.487	0.726	-0.091	-22.918	-2.392	-25.398	0.367	0.856	-0.301	-0.352	-5.393	1.442	0.92	2.356	0.825	-5.053	0.948	-4.215	-4.014	-0.693	-3.759	1.657	3.623	0.051	-3.157	3.63	1.121	-1.399
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	-2.0	0.4	-0.4	1.9	-15.2	-25.0	-1.5	0.2	-0.2	-1.8	2.2	-2.2	1.1	-0.6	0.9	-0.1	-27.8	-3.2	25.9	0.6	1.9	-0.6	-0.7	-13.6	5.3	1.9	4.6	1.8	-12.9	2.7	-17.2	-13.3	-1.6	-7.1	3.0	8.0	0.1	-4.9	5.8	2.4	-2.6

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

Period End	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-01-01	2010-10-02
Value	0.0	0.0	18	33	0.0	0.0	0.0	0.744	0.0	0.0	0.0	1.721	5.344	0.0	0.0	0.0	0.0	0.0	0.0	5.0	3.544	0.0	4.96	0.0	0.0	0.0	0.777	1.32
Percentage of PaymentsForRepurchaseOfCommonStock	0.0	0.0	100.0	100.0	0.0	0.0	0.0	100.0	0.0	0.0	0.0	100.0	100.0	0.0	0.0	0.0	0.0	0.0	0.0	100.0	100.0	0.0	100.0	0.0	0.0	0.0	100.0	100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	3.0	9.0	-26.0	9.0	0	-0.1	-5.8	5.0	0.1	0.14
Percentage of EffectiveIncomeTaxRateContinuingOperations	100.0	100.0	100.0	100.0	0.0	100.0	100.0	100.0	100.0	100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

onto:ExercisePriceRange1

Period End	2020-12-26	2019-12-31
Value	28000.0	1000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	100.0	100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

Period End	2020-12-26	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	15.25	15.49	16.27	16.19	15.8	15.2	15.8	15.8	16.94	16.99	16.82	16.09	15.2	14.93	15.06	15.06	15.07	14.36	14.61	14.4	14.27	14.14	13.92	13.98	13.91	13.64	13.22	12.9	12.85	12.62	12.01	11.85	11.62	10.53
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

onto:ExercisePriceRange1

Period End	2020-12-26	2019-12-31
Value	15.25	14.08
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	100.0	90.9

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

Period End	2020-12-26	2019-12-31
Value	53	65
Percentage of DeferredTaxLiabilities	100.0	100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

Period End	2020-12-26	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31
Value	26	28	3.664	2.807	2.473	13	2.569	7.05	11	17	4.272	6.248	25	18	22
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

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

Period End	2020-12-26	2019-12-31	2018-12-31	2018-12-29	2017-12-31	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31	2011-01-01	2010-01-02
Value	13	15	5.528	8.108	4.88	7.151	6.477	6.961	6.442	4.436	3.464	3.599	3.37	1.032
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

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31	2018-12-29	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31
Value	14	14	14	14	14	14	14	3.172	10	13	10	36	35	11	10	8.142
Percentage of DeferredTaxAssetsValuationAllowance	100.0	100.0	100.0	100.0	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:DeferredTaxAssetsValuationAllowance us-gaap:IncomeTaxAuthority

us-gaap:DomesticCountry

Period End	2020-12-26
Value	3.15
Percentage of DeferredTaxAssetsValuationAllowance	22.1

us-gaap:DeferredTaxAssetsValuationAllowance us-gaap:StatementGeographical

stpr:CA

Period End	2020-12-26	2019-12-31
Value	7.824	7.439
Percentage of DeferredTaxAssetsValuationAllowance	55.0	52.5

us-gaap:DeferredTaxAssetsValuationAllowance us-gaap:StatementGeographical, us-gaap:IncomeTaxAuthority

country:CH, us-gaap:ForeignCountry

Period End	2020-12-26
Value	2.797
Percentage of DeferredTaxAssetsValuationAllowance	19.6

country:GB, us-gaap:ForeignCountry

Period End	2020-12-26
Value	0.467
Percentage of DeferredTaxAssetsValuationAllowance	3.3

onto:AcquiredInventoryStepUpAmortization

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28
Value	0.0	0.252	0.506	-0.001	0.275	9.898
Percentage of AcquiredInventoryStepUpAmortization	0.0	100.0	100.0	100.0	100.0	100.0

onto:BusinessCombinationPotentialEarnoutPayment us-gaap:BusinessAcquisition

onto:BusinessCombinationPotentialEarnoutPayment

onto:InspectrologyLLC

Period End	2020-12-31
Value	10000000.0
Percentage of BusinessCombinationPotentialEarnoutPayment	100.0

onto:CashReceivedFromConvertibleNoteReceivable

Period End	2020-09-26
Value	0
Percentage of CashReceivedFromConvertibleNoteReceivable	0.0

onto:ContractWithCustomerLiabilityRevenueRecognizedIncludingAdditions

Period End	2021-06-26	2021-03-27	2020-06-27	2020-03-28
Value	14	12	8.956	11
Percentage of ContractWithCustomerLiabilityRevenueRecognizedIncludingAdditions	100.0	100.0	100.0	100.0

onto:OtherExpenseIncome

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	39000.0	27000.0	106000.0	73000.0	67000.0	35000.0	65000.0	2000.0	0
Percentage of OtherExpenseIncome	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0

onto:ProceedsFromAccountsReceivable

Period End	2021-06-26	2021-03-27	2020-09-26	2019-09-28	2018-09-29
Value	3.556	2.67	7.738	4.4	12
Percentage of ProceedsFromAccountsReceivable	100.0	100.0	100.0	100.0	100.0

onto:ProvisionForDoubtfulAccountsAndInventoryValuation

Period End	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	2.329	2.18	0.928	9.281	0.918	-0.025	1.028
Percentage of ProvisionForDoubtfulAccountsAndInventoryValuation	100.0	100.0	100.0	100.0	100.0	100.0	100.0

onto:ProvisionForInventoryValuation

Period End	2021-06-26	2021-03-27	2020-06-27	2020-03-28
Value	1.439	2.267	2.18	0.928
Percentage of ProvisionForInventoryValuation	100.0	100.0	100.0	100.0

onto:StockRepurchasedAndRetiredAveragePricePerShare

Period End	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	0	29.08	26.89	-4.83	0	0	24.68
Percentage of StockRepurchasedAndRetiredAveragePricePerShare	0.0	100.0	100.0	100.0	0.0	0.0	100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalIncomeTaxDeficiencyFromShareBasedCompensation

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-06-30	2019-03-31
Value	-4007000.0	-2492000.0	-266000.0	-1715000.0	-1565000.0	-1000.0	-151000.0	-598000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalIncomeTaxDeficiencyFromShareBasedCompensation	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalIncomeTaxDeficiencyFromShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-06-30	2019-03-31
Value	-4007000.0	-2492000.0	-266000.0	-1715000.0	-1565000.0	-1000.0	-151000.0	-598000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalIncomeTaxDeficiencyFromShareBasedCompensation	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

us-gaap:ConcentrationRiskPercentage1

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-06-30	2019-03-31
Value	100.0	100.0	100.0	1.0	1.0	100.0	1.0	1.0
Percentage of ConcentrationRiskPercentage1	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:MajorCustomers, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

onto:SKHynixInc, us-gaap:SalesRevenueNet, us-gaap:CustomerConcentrationRisk

Period End	2021-03-27
Value	12.0
Percentage of ConcentrationRiskPercentage1	12.0

onto:SamsungSemiconductor, us-gaap:SalesRevenueNet, us-gaap:CustomerConcentrationRisk

Period End	2021-03-27	2020-03-28
Value	25.0	18.0
Percentage of ConcentrationRiskPercentage1	25.0	1800.0

onto:TaiwanSemiconductorManufacturingCompanyLimited, us-gaap:SalesRevenueNet, us-gaap:CustomerConcentrationRisk

Period End	2021-03-27	2020-03-28
Value	13.0	17.0
Percentage of ConcentrationRiskPercentage1	13.0	1700.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:ProductOrService, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

onto:PartsRevenue, us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-06-30	2019-03-31
Value	10.0	10.0	15.0	0.12	0.1	11.0	0.11	0.13
Percentage of ConcentrationRiskPercentage1	10.0	10.0	15.0	12.0	10.0	11.0	11.0	13.0

onto:ServiceRevenue, us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-06-30	2019-03-31
Value	6.0	6.0	8.0	0.08	0.08	5.0	0.05	0.05
Percentage of ConcentrationRiskPercentage1	6.0	6.0	8.0	8.0	8.0	5.0	5.0	5.0

onto:SystemsAndSoftwareRevenue, us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-06-30	2019-03-31
Value	84.0	84.0	77.0	0.8	0.82	84.0	0.84	0.82
Percentage of ConcentrationRiskPercentage1	84.0	84.0	77.0	80.0	82.0	84.0	84.0	82.0

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	15	19	10	10	8.818	14	11	5.86	6.13	1.805
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination

Period End	2021-06-26	2021-03-27
Value	1000.0	385000.0
Percentage of ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination	100.0	100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

Period End	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31
Value	10	8.956	11	9.269	7.937	4.7	5.468	1.7	1.198
Percentage of ContractWithCustomerLiabilityRevenueRecognized	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:Depreciation

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31	2011-10-01	2011-07-02
Value	3.866	3.618	3.998	3.594	3.137	3.103	2.566	1.036	1.9	1.109	1.9	1.254	1.7	1.6	1.6	1.6	1.7	-1.11	1.6	1.6	1.6	1.8	1.7	1.7	1.7	1.7	1.7	1.8	1.7	1.7	1.7	1.7	1.6	1.6	1.4	1.4	1.3	1.3	1.3	1.3	1.2	0.9	1.1	0.7
Percentage of Depreciation	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02
Value	2265000.0	-1513000.0	1447000.0	886000.0	667000.0	-636000.0	572000.0	-268000.0	74000.0	-145000.0	-32000.0	-399000.0	-52000.0	-36000.0	-97000.0	-333000.0	-628000.0	323000.0	149000.0	238000.0	-98000.0	-106000.0	14000.0	-74000.0	-457000.0	-456000.0	180000.0	7000.0	124000.0	386000.0	-296000.0	-656000.0	-601000.0	296000.0	83000.0	32000.0	25000.0	-886000.0	626000.0	398000.0	-429000.0	484000.0
Percentage of EffectOfExchangeRateOnCashAndCashEquivalents	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:ForeignCurrencyTransactionGainLossBeforeTax

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02
Value	-328000.0	-1271000.0	-1005000.0	-1271000.0	-35000.0	-98000.0	552000.0	-159000.0	381000.0	-300000.0	-400000.0	-200000.0	100000.0	-700000.0	100000.0	-100000.0	-200000.0	-400000.0	-700000.0	-400000.0
Percentage of ForeignCurrencyTransactionGainLossBeforeTax	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:GoodwillAcquiredDuringPeriod

Period End	2021-03-27
Value	7.259
Percentage of GoodwillAcquiredDuringPeriod	100.0

us-gaap:GoodwillPurchaseAccountingAdjustments

Period End	2020-12-26	2020-09-26	2020-06-27	2020-03-28
Value	-994000.0	0	0	478000.0
Percentage of GoodwillPurchaseAccountingAdjustments	100.0	0.0	0.0	100.0

us-gaap:GoodwillPurchaseAccountingAdjustments us-gaap:BalanceSheetLocation, us-gaap:BusinessAcquisition

us-gaap:OtherNoncurrentLiabilities, onto:RudolphAndNanometrics

Period End	2020-09-26	2020-06-27	2020-03-28
Value	0	0	478000.0
Percentage of GoodwillPurchaseAccountingAdjustments	0.0	0.0	100.0

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28
Value	-829000.0	131000.0	-320000.0	-72000.0	-257000.0	526000.0
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:AccumulatedOtherComprehensiveIncome

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28
Value	-4090000.0	2030000.0	-7430000.0	1731000.0	-2224000.0	2757000.0
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent	493.4	1549.6	2321.9	-2404.2	865.4	524.1

us-gaap:AccumulatedTranslationAdjustment

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28
Value	-3261000.0	1899000.0	-7110000.0	1803000.0	-1967000.0	2231000.0
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent	393.4	1449.6	2221.9	-2504.2	765.4	424.1

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31
Value	537000.0	-1899000.0	2976000.0	1803000.0	2495000.0	-2231000.0	1175000.0	-264000.0	-671000.0	316000.0	-42000.0	-518000.0	647000.0	48000.0	38000.0	-2555000.0	1987000.0
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	100.0	100.0	100.0	100.0	100.0	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:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31
Value	537000.0	-1899000.0	1803000.0	2495000.0	-2231000.0	-264000.0	-671000.0	316000.0	-42000.0	-518000.0	647000.0	48000.0	38000.0	-2555000.0	1987000.0
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	100.0	100.0	100.0	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:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31
Value	-567000.0	-131000.0	-74000.0	-72000.0	795000.0	-526000.0	-253000.0	0	11000.0	114000.0	44000.0	95000.0	55000.0	301000.0	44000.0	52000.0	-89000.0	-87000.0	-86000.0	15000.0	-8000.0	-9000.0	-31000.0	1000.0	37000.0	35000.0	-55000.0	17000.0	-4000.0	29000.0	-29000.0	-15000.0	8000.0	107000.0	-10000.0	20000.0	-8000.0	5000.0	1000.0	1000.0	-4000.0	0
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31
Value	-30000.0	-2030000.0	2902000.0	1731000.0	3290000.0	-2757000.0	922000.0	-264000.0	-660000.0	430000.0	2000.0	-423000.0	702000.0	90000.0	82000.0	-2503000.0	1898000.0	454000.0	779000.0	-218000.0	-22000.0	-1698000.0	-2122000.0	-1652000.0	182000.0	211000.0	160000.0	1162000.0	-43000.0	-1939000.0	-464000.0	1109000.0	-1168000.0	246000.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2012-12-29	2012-09-29	2012-06-30	2011-12-31	2011-10-01
Value	-567000.0	-131000.0	-72000.0	795000.0	-526000.0	11000.0	114000.0	44000.0	95000.0	55000.0	301000.0	44000.0	52000.0	-89000.0	1000.0	1000.0	-4000.0	0	0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	100.0	100.0	100.0	100.0	100.0	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:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31
Value	-567000.0	-131000.0	-72000.0	795000.0	-526000.0	11000.0	114000.0	44000.0	95000.0	55000.0	301000.0	44000.0	52000.0	-89000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	100.0	100.0	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	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	281000.0	-2173000.0	-6476000.0	2867000.0	-1246000.0	144000.0	-1831000.0	-489000.0	-159000.0	381000.0
Percentage of OtherNoncashIncomeExpense	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:PaymentForContingentConsiderationLiabilityFinancingActivities

Period End	2020-12-26	2020-09-26	2019-12-31	2019-09-30
Value	134000.0	0	637000.0	0
Percentage of PaymentForContingentConsiderationLiabilityFinancingActivities	100.0	0.0	100.0	0.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02
Value	4007000.0	2492000.0	506000.0	267000.0	1714000.0	1565000.0	1790000.0	1000.0	177000.0	151000.0	1525000.0	598000.0	803000.0	487000.0	391000.0	2255000.0	476000.0	-2480000.0	297000.0	446000.0	1637000.0	1755000.0	244000.0	290000.0	630000.0	658000.0	78000.0	89000.0	251000.0	764000.0	38000.0	0	5000.0	659000.0	1095000.0	0	0	86000.0	602000.0	0	0	16000.0	80000.0	0	23000.0	23000.0	50000.0	83000.0
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	0.0	100.0	100.0	0.0	0.0	100.0	100.0	0.0	100.0	100.0	100.0	100.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition

us-gaap:PaymentsToAcquireBusinessesGross

onto:InspectrologyLLC

Period End	2020-12-31
Value	27
Percentage of PaymentsToAcquireBusinessesGross	100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

Period End	2021-06-26	2021-03-27
Value	0.0	26
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired	0.0	100.0

us-gaap:PaymentsToAcquireMarketableSecurities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31
Value	58	83	62	110	63	76	74	14	16	22	24	26	42	36	19	50	-0.073	12	14	9.737	6.948	10	14	7.331	11	8.41	8.385	17	12	11	17	27	13	0.0	0.0
Percentage of PaymentsToAcquireMarketableSecurities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-29	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-04-02	2011-01-01	2010-10-02
Value	130000.0	3085000.0	74000.0	2666000.0	15000.0	164000.0	561000.0	123000.0	19000.0	2987000.0	1548000.0	0	1117000.0	2164000.0	545000.0	-3055000.0	1898000.0	813000.0	1648000.0	1217000.0	2463000.0	2518000.0	2532000.0	934000.0	332000.0	1142000.0	143000.0	2357000.0	106000.0	1651000.0	1086000.0	3115000.0	1775000.0	334000.0	1260000.0	1598000.0	450000.0	831000.0	1418000.0	1214000.0	1895000.0	1752000.0	1936000.0	1603000.0	1901000.0	2049000.0
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:ProceedsFromSaleAndMaturityOfMarketableSecurities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31
Value	48	53	63	54	72	74	32	29	18	14
Percentage of ProceedsFromSaleAndMaturityOfMarketableSecurities	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:ProductWarrantyAccrualPayments

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02
Value	190000.0	2039000.0	1860000.0	3383000.0	50000.0	2277000.0	2108000.0	789000.0	563000.0	835000.0	1003000.0	853000.0	1491000.0	1351000.0	1668000.0	1187000.0	1665000.0	1126000.0	1080000.0	1053000.0	963000.0	1327000.0	1471000.0	1189000.0	1188000.0	1879000.0	1789000.0	1899000.0	1215000.0	1565000.0	1736000.0	1997000.0	1168000.0	1266000.0	1278000.0	1223000.0	1188000.0	2096000.0	1381000.0	1720000.0	1955000.0	2242000.0	1781000.0	1562000.0
Percentage of ProductWarrantyAccrualPayments	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:ProductWarrantyAccrualWarrantiesIssued

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02
Value	908000.0	2652000.0	2061000.0	2852000.0	481000.0	2313000.0	2187000.0	688000.0	1201000.0	718000.0	910000.0	672000.0	960000.0	999000.0	1020000.0	1450000.0	1445000.0	1447000.0	1020000.0	1411000.0	1369000.0	980000.0	1100000.0	1368000.0	1061000.0	2092000.0	2288000.0	2251000.0	1702000.0	1528000.0	1242000.0	913000.0	1100000.0	965000.0	801000.0	701000.0	423000.0	611000.0	881000.0	1192000.0	1472000.0	997000.0	1213000.0	1291000.0
Percentage of ProductWarrantyAccrualWarrantiesIssued	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU

Period End	2021-06-26	2021-03-27	2020-12-26	2019-09-28	2019-06-29	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26
Value	6.1	31.51	0.13	0.01	1.53	30.83	0.64	1.3	2.35	22.15	-0.07	1.8	1.2	0.06	15.95	0.29	0.82	-0.3	15.48
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU

Period End	2021-06-26	2021-03-27	2020-12-26	2019-09-28	2019-06-29	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26
Value	-0.47	69.94	0.05	-0.05	-0.27	28.95	-0.63	0.63	9.99	26.58	0.94	-0.17	-0.15	1.31	26.13	0.3	0.13	3.73	13.29
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU

Period End	2021-06-26	2021-03-27	2020-12-26	2019-09-28	2019-06-29	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26
Value	1.89	28.85	0.09	0.39	5.41	23.06	0.28	-0.11	1.74	18.88	-1.99	0.02	-0.24	0.85	16.18	-0.06	-0.32	-0.7	17.13
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:SharesPaidForTaxWithholdingForShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation

us-gaap:CommonStock

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-06-30	2019-03-31
Value	-56000.0	41000.0	8000.0	55000.0	-42.0	5000.0	-22.0
Percentage of SharesPaidForTaxWithholdingForShareBasedCompensation	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:StandardProductWarrantyAccrualAdditionsFromBusinessAcquisition

Period End	2021-06-26	2021-03-27
Value	0	407000.0
Percentage of StandardProductWarrantyAccrualAdditionsFromBusinessAcquisition	0.0	100.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31
Value	288000.0	240000.0	116000.0	279000.0	240.0	1000.0	14575.0	143000.0	293800.0	83.0	162390.0	31514.0	149190.0	175800.0	158030.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation	100.0	100.0	100.0	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:StockIssuedDuringPeriodValueShareBasedCompensation

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31
Value	0.13	3.085	2.665	0.015	0.164	0.123	-0.158	0.16	1.462	0.745	-0.488	0.728	-0.094	0.069
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation	100.0	100.0	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:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31
Value	0.13	3.085	2.665	0.015	0.164	0.123	-0.158	0.16	1.462	0.744	-0.488	0.728	-0.094	0.069
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	99.9	100.0	100.0	100.0	100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue

Period End	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31
Value	0.0	18	33	0.0	0.0	0.0	0.744	0.0	0.0	0.0	22
Percentage of StockRepurchasedAndRetiredDuringPeriodValue	0.0	100.0	100.0	0.0	0.0	0.0	100.0	0.0	0.0	0.0	100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

Period End	2021-06-26	2021-03-27	2020-09-26	2020-06-27	2020-03-28	2019-09-30	2019-09-28	2019-06-30	2019-06-29	2019-03-31	2019-03-30	2018-09-29	2018-06-30	2018-03-31	2017-09-30	2017-07-01	2017-04-01	2016-09-24	2016-06-25	2016-03-26	2015-09-26	2015-06-27	2015-03-28	2014-09-27	2014-06-28	2014-03-29	2013-09-28	2013-06-29	2013-03-30	2012-09-29	2012-06-30	2012-03-31	2011-10-01	2011-07-02
Value	508000.0	572000.0	231000.0	278000.0	0	226000.0	254000.0	218000.0	318000.0	281000.0	309000.0	407000.0	489000.0	420000.0	438000.0	599000.0	700000.0	456000.0	403000.0	289000.0	207000.0	265000.0	391000.0	0	281000.0	448000.0	0	0	0	450000.0	482000.0	632000.0	651000.0	733000.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment	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	100.0	100.0	100.0	100.0	100.0	0.0	100.0	100.0	0.0	0.0	0.0	100.0	100.0	100.0	100.0	100.0

onto:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesPayrollAndRelatedExpenses us-gaap:BusinessAcquisition

onto:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesPayrollAndRelatedExpenses

onto:InspectrologyLLC

Period End	2020-12-31
Value	0.512
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesPayrollAndRelatedExpenses	100.0

onto:ContractWithCustomerLiabilityNet

Period End	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2017-12-31
Value	17	17	18	15	7.272	9.349	8.687	8.08	7.206
Percentage of ContractWithCustomerLiabilityNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

onto:DeferredTaxAssetsDepreciationAndAmortization

Period End	2020-12-26	2019-12-31	2018-12-31
Value	687000.0	7151000.0	4298000.0
Percentage of DeferredTaxAssetsDepreciationAndAmortization	100.0	100.0	100.0

onto:DeferredTaxAssetsOperatingLeaseLiabilities

Period End	2020-12-26	2019-12-31
Value	4261000.0	4965000.0
Percentage of DeferredTaxAssetsOperatingLeaseLiabilities	100.0	100.0

onto:DeferredTaxAssetsTaxDeferredExpenseDeferredRevenue

Period End	2020-12-26	2019-12-31	2018-12-31
Value	1648000.0	1219000.0	1201000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseDeferredRevenue	100.0	100.0	100.0

onto:DeferredTaxLiabilitiesDepreciationAndAmortization

Period End	2020-12-26	2019-12-31	2018-12-31
Value	75	89	0.609
Percentage of DeferredTaxLiabilitiesDepreciationAndAmortization	100.0	100.0	100.0

onto:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets

Period End	2020-12-26	2019-12-31
Value	3960000.0	4709000.0
Percentage of DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	100.0	100.0

onto:EmployeeStockPurchasePlanAvailable

Period End	2020-12-26	2019-12-31	2017-12-31
Value	1500000.0	236000.0	1206000.0
Percentage of EmployeeStockPurchasePlanAvailable	100.0	100.0	100.0

onto:IntangibleAssetsAccumulatedAmortizationExcludingGoodwill

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	161	149	136	124	110	96	83	72
Percentage of IntangibleAssetsAccumulatedAmortizationExcludingGoodwill	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

onto:ShareBasedCompensationSharesForIssuance us-gaap:PlanName

onto:ShareBasedCompensationSharesForIssuance

onto:TwoThousandTwentyStockPlan

Period End	2020-12-26
Value	3555000.0
Percentage of ShareBasedCompensationSharesForIssuance	100.0

onto:UnrecognizedTaxBenefitsIncludingInterestNoncurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	2765000.0	4002000.0	3812000.0	7063000.0	6535000.0	6520000.0	6384000.0	5409000.0
Percentage of UnrecognizedTaxBenefitsIncludingInterestNoncurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:AccruedProfessionalFeesCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	1259000.0	1261000.0	1184000.0	926000.0	890000.0	1293000.0	1520000.0	1458000.0	625000.0	469000.0	532000.0	448000.0	537000.0	496000.0	470000.0	534000.0	784000.0	720000.0	570000.0	424000.0	492000.0	502000.0	661000.0	481000.0	671000.0	787000.0	875000.0	778000.0	726000.0	712000.0	799000.0	545000.0	771000.0	860000.0	962000.0	584000.0	610000.0	897000.0	1497000.0
Percentage of AccruedProfessionalFeesCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax

Period End	2020-12-26	2019-12-31	2018-12-31
Value	-4479000.0	-564000.0	-1273000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	100.0	100.0	100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	720000.0	1018000.0	784000.0	1634000.0	1665000.0	1398000.0	1247000.0	200000.0	209000.0	179000.0	691000.0	170000.0	58000.0	52000.0	116000.0	126000.0	69000.0	55000.0	74000.0	73000.0	92000.0	136000.0	145000.0	150000.0	159000.0	214000.0	212000.0	253000.0	253000.0	295000.0	293000.0	293000.0	227000.0	174000.0	90000.0	82000.0	51000.0	82000.0	126000.0	117000.0	156000.0	162000.0	63000.0
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	276	266	237	238	177	190	189	100	77	57	62	42	76	68	57	82	101	96	85	85	85	35	42	45	49	45	46	46	46	44	44	43	28	29	28	25	26	9.24	0.0
Percentage of AssetsFairValueDisclosure	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	276	266	237	238	182	190	189	62
Percentage of AssetsFairValueDisclosure	100.0	100.0	100.0	100.0	102.8	100.0	100.0	100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2017-12-30
Value	176000.0	272000.0	372000.0	501000.0	561000.0	318000.0	260000.0	52000.0	50000.0	15000.0	43000.0	0	6000.0	0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	0.0	100.0	0.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:InvestmentType

us-gaap:AssetBackedSecurities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	4000.0	11000.0	29000.0	51000.0	78000.0	2000.0	12000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	2.3	4.0	7.8	10.2	13.9	0.6	4.6

us-gaap:CertificatesOfDeposit

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	19000.0	23000.0	24000.0	36000.0	18000.0	13000.0	7000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	10.8	8.5	6.5	7.2	3.2	4.1	2.7

us-gaap:CommercialPaperNotIncludedWithCashAndCashEquivalents

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	19000.0	21000.0	12000.0	18000.0	19000.0	1000.0	1000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	10.8	7.7	3.2	3.6	3.4	0.3	0.4

us-gaap:CorporateDebtSecurities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	6000.0	15000.0	50000.0	126000.0	211000.0	6000.0	52000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	3.4	5.5	13.4	25.1	37.6	1.9	20.0

us-gaap:USTreasuryAndGovernment

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	128000.0	202000.0	257000.0	270000.0	235000.0	296000.0	188000.0	43000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	72.7	74.3	69.1	53.9	41.9	93.1	72.3	100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2017-12-30
Value	81000.0	50000.0	19000.0	34000.0	23000.0	576000.0	6000.0	1000.0	0	13000.0	40000.0	86000.0	114000.0	133000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	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

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:InvestmentType

us-gaap:CertificatesOfDeposit

Period End	2021-06-26	2020-06-27	2020-03-28	2019-12-31
Value	1000.0	17000.0	262000.0	0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1.2	73.9	45.5	0.0

us-gaap:CommercialPaperNotIncludedWithCashAndCashEquivalents

Period End	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	1000.0	3000.0	1000.0	2000.0	66000.0	0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	2.0	15.8	2.9	8.7	11.5	0.0

us-gaap:CorporateDebtSecurities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	61000.0	40000.0	12000.0	27000.0	2000.0	179000.0	0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	75.3	80.0	63.2	79.4	8.7	31.1	0.0

us-gaap:USTreasuryAndGovernment

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	19000.0	9000.0	4000.0	6000.0	2000.0	10000.0	6000.0	40000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	23.5	18.0	21.1	17.6	8.7	1.7	100.0	100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2017-12-30
Value	276	266	236	238	182	190	189	144	144	148	62	151	173	117
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis	100.0	100.0	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:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:InvestmentType

us-gaap:AssetBackedSecurities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	4.09	9.169	11	15	15	12	10
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis	1.5	3.4	4.9	6.3	8.5	6.4	5.7

us-gaap:CertificatesOfDeposit

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	44	36	36	39	35	33	30
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis	15.9	13.7	15.4	16.6	19.7	17.4	16.1

us-gaap:CommercialPaperNotIncludedWithCashAndCashEquivalents

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	50	51	32	27	26	42	30
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis	18.4	19.4	13.8	11.5	14.5	22.3	16.2

us-gaap:CorporateDebtSecurities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	34	32	31	44	35	32	36
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis	12.5	12.2	13.3	18.9	19.2	17.0	19.2

us-gaap:USTreasuryAndGovernment

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	142	136	124	111	64	70	80	62
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis	51.6	51.2	52.6	46.6	35.3	36.9	42.7	100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	80	65	66	65	37	35	36	14
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	80	65	66	65	37	35	36	14
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	195	201	170	172	144	155	152	47
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	195	201	170	173	144	155	152	47
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2017-12-30
Value	276	266	237	238	182	190	189	144	144	148	62	151	172	117
Percentage of AvailableForSaleSecuritiesDebtSecurities	100.0	100.0	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:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetBackedSecurities, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	4.094	9.18	11	15	15	12	10
Percentage of AvailableForSaleSecuritiesDebtSecurities	1.5	3.4	4.9	6.3	8.5	6.4	5.7

us-gaap:CertificatesOfDeposit, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	44	36	36	39	35	32	30
Percentage of AvailableForSaleSecuritiesDebtSecurities	15.9	13.7	15.3	16.6	19.6	17.3	16.1

us-gaap:CommercialPaperNotIncludedWithCashAndCashEquivalents, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	50	51	32	27	26	42	30
Percentage of AvailableForSaleSecuritiesDebtSecurities	18.4	19.4	13.8	11.5	14.5	22.3	16.2

us-gaap:CorporateDebtSecurities, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	34	32	31	45	35	32	36
Percentage of AvailableForSaleSecuritiesDebtSecurities	12.5	12.2	13.3	18.9	19.3	17.0	19.2

us-gaap:USStatesAndPoliticalSubdivisions, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	142	136	124	111	64	70	81	62
Percentage of AvailableForSaleSecuritiesDebtSecurities	51.7	51.2	52.6	46.7	35.4	37.1	42.8	100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetBackedSecurities, us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	4.094	9.18	11	15	15	12	10
Percentage of AvailableForSaleSecuritiesDebtSecurities	1.5	3.4	4.9	6.3	8.5	6.4	5.7

us-gaap:CertificatesOfDeposit, us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	44	36	36	39	35	32	30
Percentage of AvailableForSaleSecuritiesDebtSecurities	15.9	13.7	15.3	16.6	19.6	17.3	16.1

us-gaap:CommercialPaperNotIncludedWithCashAndCashEquivalents, us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	50	51	32	27	26	42	30
Percentage of AvailableForSaleSecuritiesDebtSecurities	18.4	19.4	13.8	11.5	14.5	22.3	16.2

us-gaap:CorporateDebtSecurities, us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	34	32	31	45	35	32	36
Percentage of AvailableForSaleSecuritiesDebtSecurities	12.5	12.2	13.3	18.9	19.3	17.0	19.2

us-gaap:USStatesAndPoliticalSubdivisions, us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	142	136	124	111	64	70	81	62
Percentage of AvailableForSaleSecuritiesDebtSecurities	51.7	51.2	52.6	46.7	35.4	37.1	42.8	100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:InvestmentType

us-gaap:AssetBackedSecurities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	4.094	9.18	11	15	15	12	10
Percentage of AvailableForSaleSecuritiesDebtSecurities	1.5	3.4	4.9	6.3	8.5	6.4	5.7

us-gaap:CertificatesOfDeposit

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	44	36	36	39	35	32	30
Percentage of AvailableForSaleSecuritiesDebtSecurities	15.9	13.7	15.3	16.6	19.6	17.3	16.1

us-gaap:CommercialPaperNotIncludedWithCashAndCashEquivalents

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	50	51	32	27	26	42	30
Percentage of AvailableForSaleSecuritiesDebtSecurities	18.4	19.4	13.8	11.5	14.5	22.3	16.2

us-gaap:CorporateDebtSecurities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31
Value	34	32	31	45	35	32	36
Percentage of AvailableForSaleSecuritiesDebtSecurities	12.5	12.2	13.3	18.9	19.3	17.0	19.2

us-gaap:USTreasuryAndGovernment

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	142	136	124	111	64	70	81	62
Percentage of AvailableForSaleSecuritiesDebtSecurities	51.7	51.2	52.6	46.7	35.4	37.1	42.8	100.0

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2017-12-30
Value	276	266	237	238	182	190	189	93	50	52	62	40	76	82
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent	100.0	100.0	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:BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned us-gaap:BusinessAcquisition, us-gaap:StatementEquityComponents

us-gaap:BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned

onto:RudolphTechnologiesInc, us-gaap:CommonStock

Period End	2020-12-26
Value	884
Percentage of BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned	100.0

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:BusinessCombinationContingentConsiderationLiability

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring

Period End	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	134000.0	134000.0	569000.0	569000.0	2060000.0
Percentage of BusinessCombinationContingentConsiderationLiability	100.0	100.0	100.0	100.0	100.0

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring

Period End	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	134000.0	134000.0	569000.0	569000.0	2060000.0
Percentage of BusinessCombinationContingentConsiderationLiability	100.0	100.0	100.0	100.0	100.0

us-gaap:BusinessCombinationContingentConsiderationLiabilityCurrent

Period End	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	134000.0	134000.0	569000.0	569000.0	1422000.0
Percentage of BusinessCombinationContingentConsiderationLiabilityCurrent	100.0	100.0	100.0	100.0	100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets

onto:InspectrologyLLC

Period End	2020-12-31
Value	22
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets	100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents

onto:InspectrologyLLC

Period End	2020-12-31
Value	0.22
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents	100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets

onto:InspectrologyLLC

Period End	2020-12-31
Value	104000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets	100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables

onto:InspectrologyLLC

Period End	2020-12-31
Value	4.071
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables	100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable

onto:InspectrologyLLC

Period End	2020-12-31
Value	1.048
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable	100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue

onto:InspectrologyLLC

Period End	2020-12-31
Value	386000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue	100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther

onto:InspectrologyLLC

Period End	2020-12-31
Value	0.576
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther	100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill

onto:InspectrologyLLC

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

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory

onto:InspectrologyLLC

Period End	2020-12-31
Value	2.587
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory	100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet

onto:InspectrologyLLC

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

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets

onto:InspectrologyLLC

Period End	2020-12-31
Value	3000000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets	100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment

onto:InspectrologyLLC

Period End	2020-12-31
Value	0.086
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

onto:InspectrologyLLC

Period End	2020-12-31
Value	27
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet	100.0

us-gaap:ContractWithCustomerLiability

Period End	2021-06-26	2021-03-27	2020-12-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29
Value	22	22	15	17	18	15	8.801	11	12	8.08	10
Percentage of ContractWithCustomerLiability	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:ContractWithCustomerLiabilityNoncurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2017-12-30
Value	1716000.0	1005000.0	1292000.0	1764000.0	2238000.0	2462000.0	2464000.0	1432000.0	1616000.0	1505000.0	1314000.0	1753000.0	1575000.0	1661000.0
Percentage of ContractWithCustomerLiabilityNoncurrent	100.0	100.0	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:ContractWithCustomerRefundLiabilityCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	10	17	15	1.215	0.671	0.471	1.994	1.135
Percentage of ContractWithCustomerRefundLiabilityCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	59	42	32	28	35	87	14	27
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months us-gaap:InvestmentType

us-gaap:CertificatesOfDeposit

Period End	2021-06-26	2020-06-27	2020-03-28
Value	4.603	14	23
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	7.7	42.7	27.1

us-gaap:CommercialPaperNotIncludedWithCashAndCashEquivalents

Period End	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28
Value	5.991	8.862	4.497	5.498	22
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	14.3	27.3	15.8	15.7	25.6

us-gaap:CorporateDebtSecurities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28
Value	24	20	14	17	4.277	25
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	41.0	48.9	46.1	62.9	12.2	29.0

us-gaap:USTreasuryAndGovernment

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	30	15	8.641	6.026	7.28	5.086	14	27
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	51.3	36.8	26.6	21.2	20.7	5.8	100.0	100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	81000.0	50000.0	19000.0	34000.0	23000.0	576000.0	6000.0	30000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss us-gaap:InvestmentType

us-gaap:CertificatesOfDeposit

Period End	2021-06-26	2020-06-27	2020-03-28
Value	1000.0	17000.0	262000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1.2	73.9	45.5

us-gaap:CommercialPaperNotIncludedWithCashAndCashEquivalents

Period End	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28
Value	1000.0	3000.0	1000.0	1000.0	66000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	2.0	15.8	2.9	4.3	11.5

us-gaap:CorporateDebtSecurities

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28
Value	61000.0	40000.0	12000.0	27000.0	2000.0	179000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	75.3	80.0	63.2	79.4	8.7	31.1

us-gaap:USTreasuryAndGovernment

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	19000.0	9000.0	4000.0	6000.0	2000.0	10000.0	6000.0	30000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	23.5	18.0	21.1	17.6	8.7	1.7	100.0	100.0

us-gaap:DeferredIncomeTaxAssetsNet

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	2.263	2.332	2.235	1.292	1.285	1.397	1.456	12
Percentage of DeferredIncomeTaxAssetsNet	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredIncomeTaxLiabilities

Period End	2020-12-26	2019-12-31	2018-12-31	2018-12-29	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31
Value	79	94	0.609	0.162	0.179	0.02	3.674	5.505	6.493	6.59	7.635
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

us-gaap:DeferredTaxAssetsGross

Period End	2020-12-26	2019-12-31	2018-12-31	2018-12-29	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31
Value	40	42	16	13	25	28	41	42	37	29	31
Percentage of DeferredTaxAssetsGross	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

Period End	2020-12-26	2019-12-31	2018-12-31	2018-12-29	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31
Value	4.849	6.008	1.692	6.022	9.755	8.434	13	14	10	10	10
Percentage of DeferredTaxAssetsOperatingLossCarryforwards	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredTaxAssetsOther

Period End	2020-12-26	2019-12-31	2018-12-31	2018-12-29	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31
Value	1877000.0	1128000.0	777000.0	532000.0	207000.0	-1252000.0	94000.0	372000.0	966000.0	945000.0	967000.0
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

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

Period End	2020-12-26	2019-12-31	2018-12-31	2018-12-29	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31
Value	10	11	2.484	6.92	9.669	10	8.658	8.122	6.591	1.51	0.999
Percentage of DeferredTaxAssetsTaxCreditCarryforwards	100.0	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	2020-12-26	2019-12-31	2018-12-31	2018-12-29	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31
Value	2556000.0	2955000.0	1259000.0	1644000.0	1483000.0	2590000.0	3856000.0	4030000.0	3789000.0	3129000.0	2242000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals

Period End	2020-12-26	2019-12-31	2018-12-31	2018-12-29	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31
Value	13	8.254	4.88	5.704	5.797	11	13	10	10	7.682	12
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:DeferredTaxLiabilitiesOther

Period End	2020-12-26	2019-12-31	2018-12-29	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31
Value	135000.0	59000.0	149000.0	167000.0	14000.0	1137000.0	1485000.0	926000.0	793000.0	1406000.0
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:DerivativeNotionalAmount

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	11	33	37	33	32	29	38	6.746
Percentage of DerivativeNotionalAmount	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2012-03-31	2011-12-31	2011-10-01	2011-07-02	2011-01-01
Value	32	21	30	24	28	22	19	12	10	9.49	10	21	14	13	9.669	12	10	10	8.456	12	11	10	8.592	10	10	9.457	10	8.7	8.395	8.059	8.2	7.853	7.982	5.466	5.926	6.67	7.247	6.967	7.661	8.837	9.501	7.68	8.813
Percentage of EmployeeRelatedLiabilitiesCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:RestrictedStockUnitsRSU

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2014-12-27	2013-12-28	2012-12-29
Value	27	21	19	23	27	22	22	5.7	3.1	3.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring

Period End	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	134000.0	134000.0	569000.0	569000.0	2060000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	100.0	100.0	100.0	100.0	100.0

us-gaap:FairValueNetAssetLiability

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	27000.0	-229000.0	-36000.0	-239000.0	-139000.0	283000.0	120000.0	-32000.0
Percentage of FairValueNetAssetLiability	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	161	149	136	124	110	96	83	20	19	18	18	30	30	21	30	30	29	29	28	29	28	28	27	27	27	26	26	25	25	24	24	23	22	21	20	20	19	17
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	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	23	21	20	19	16	13	11	2.327	2.057	1.79	9.082	1.519	9.445	9.438	8.521	9.438	9.426	9.395	9.348	9.322	9.387	9.388	9.38	9.364	9.388	9.38	9.362	9.449	9.444	9.42	9.352	9.263	9.166	8.978	8.8	8.643	8.511	8.365	7.961
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization	14.4	14.7	15.1	15.3	14.8	14.2	13.3	11.4	10.5	9.5	0.0	8.4	30.9	31.0	40.1	31.1	31.2	31.5	31.9	32.3	31.9	32.4	33.0	33.6	34.1	34.7	35.5	35.8	36.3	36.8	37.6	38.5	39.5	40.4	41.3	42.1	41.7	42.2	45.1

us-gaap:DevelopedTechnologyRights

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	132	121	110	100	89	78	67	18	17	17	59	16	16	16	8.465	16	16	16	15	15	15	15	14	14	14	13	13	12	12	12	11	11	10	9.558	8.871	8.277	8.292	7.875	6.254
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization	81.9	81.5	81.0	80.6	80.9	81.2	81.7	88.2	89.2	90.3	0.0	91.5	55.1	55.0	39.8	54.9	54.7	54.3	53.7	53.2	53.9	53.3	52.5	51.7	51.2	50.4	49.4	49.3	48.7	48.2	47.1	45.8	44.4	43.0	41.6	40.3	40.6	39.8	35.5

us-gaap:TrademarksAndTradeNames

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	5.986	5.661	5.337	5.041	4.746	4.451	4.156	3.876
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization	3.7	3.8	3.9	4.1	4.3	4.6	5.0	0.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26
Value	48	48	48	48
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	100.0	100.0	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

Period End	2021-06-26	2021-03-27	2020-09-26
Value	24	36	12
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	100.0	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26
Value	24	24	24	24
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	100.0	100.0	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26
Value	26	26	41	41
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	100.0	100.0	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26
Value	42	42	47	47
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	100.0	100.0	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26
Value	48	48	47	47
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	100.0	100.0	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsGross

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	420	420	408	408	408	408	408	34	34	24	32	32	30	29	29	29	29	29	29	29	29	29	30	31	31	32	31	31	31	31	31	32	32	32
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	100.0	100.0	100.0	100.0

us-gaap:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	74	74	69	69	69	69	69	9.56	9.445	9.438	8.521	9.438	9.426	9.395	9.348	9.322	9.387	9.388	9.38	9.364	9.388	9.38	9.362	9.461	9.51	9.567	9.584	9.573	9.558	9.529	9.51	9.538	9.561	9.561	9.561
Percentage of FiniteLivedIntangibleAssetsGross	17.8	17.8	17.0	17.0	17.0	17.0	17.0	0.0	27.3	27.3	34.9	29.0	29.1	31.2	31.5	31.8	31.3	31.3	31.4	31.5	31.3	31.4	31.5	30.8	30.4	30.0	29.9	30.0	30.1	30.3	30.4	30.3	29.8	29.8	29.8

us-gaap:DevelopedTechnologyRights

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	331	331	326	326	326	326	326	66	20	20	11	18	18	16	16	15	16	16	16	16	16	16	16	16	17	18	18	18	17	17	17	17	17	17	17
Percentage of FiniteLivedIntangibleAssetsGross	78.8	78.8	80.0	80.0	80.0	80.0	80.0	0.0	60.4	60.4	47.7	58.0	57.8	54.7	54.1	53.7	54.5	54.5	54.4	54.2	54.4	54.4	54.1	55.3	55.9	56.6	56.8	56.7	56.5	56.2	55.9	56.2	55.8	55.8	55.8

us-gaap:TrademarksAndTradeNames

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	14	14	12	12	12	12	12	4.361
Percentage of FiniteLivedIntangibleAssetsGross	3.4	3.4	3.0	3.1	3.1	3.1	3.1	0.0

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring

Period End	2021-06-26	2020-03-28	2019-12-31
Value	27000.0	283000.0	120000.0
Percentage of ForeignCurrencyContractAssetFairValueDisclosure	100.0	100.0	100.0

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring

Period End	2021-06-26	2020-03-28	2019-12-31
Value	27000.0	283000.0	120000.0
Percentage of ForeignCurrencyContractAssetFairValueDisclosure	100.0	100.0	100.0

us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring

Period End	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2018-12-31
Value	229000.0	36000.0	239000.0	139000.0	32000.0
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure	100.0	100.0	100.0	100.0	100.0

us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring

Period End	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2018-12-31
Value	229000.0	36000.0	239000.0	139000.0	32000.0
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure	100.0	100.0	100.0	100.0	100.0

us-gaap:IntangibleAssetsGrossExcludingGoodwill

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2017-12-30
Value	467	467	455	455	455	455	455	45	45	45	80	45	32
Percentage of IntangibleAssetsGrossExcludingGoodwill	100.0	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:IntangibleAssetsGrossExcludingGoodwill us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:InProcessResearchAndDevelopment

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-29
Value	46	46	46	46	46	46	46	0.9	0.9	1.4	1.4
Percentage of IntangibleAssetsGrossExcludingGoodwill	10.0	10.0	10.2	10.2	10.2	10.2	10.2	2.0	2.0	3.1	3.1

us-gaap:InventoryFinishedGoodsNetOfReserves

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2012-12-29
Value	23	25	21	22	21	23	24	7.87	9.689	8.377	13	8.098	6.675	6.703	7.548	7.175	4.968	5.614	3.976	4.984	7.799	5.432	6.98	8.103	8.936	6.86	5.509	7.919	10	8.056	7.877	7.268	8.802	11
Percentage of InventoryFinishedGoodsNetOfReserves	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:InventoryRawMaterialsNetOfReserves

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2012-12-29
Value	128	122	124	117	114	110	108	38	35	34	61	31	31	29	29	32	31	28	23	23	21	24	26	26	24	23	20	19	18	20	21	19	19	22
Percentage of InventoryRawMaterialsNetOfReserves	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:InventoryWorkInProcessNetOfReserves

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2012-12-29
Value	54	52	44	44	35	26	42	23	21	20	21	22	20	17	15	13	18	14	14	10	9.508	11	16	12	14	11	11	7.723	6.366	8.943	8.917	7.597	8.392	5.812
Percentage of InventoryWorkInProcessNetOfReserves	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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	2020-12-26
Value	5186000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	100.0

us-gaap:LiabilitiesFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:LiabilitiesFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring

Period End	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2011-12-31
Value	229000.0	36000.0	239000.0	139000.0	0	0	32000.0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Percentage of LiabilitiesFairValueDisclosure	100.0	100.0	100.0	100.0	0.0	0.0	100.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring

Period End	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	134000.0	134000.0	569000.0	569000.0	2060000.0	0	1333000.0	1270000.0	1461000.0	1490000.0	1920000.0	2073000.0	2208000.0	2397000.0	2431000.0	2588000.0	2678000.0	2783000.0	2772000.0	3246000.0	2718000.0	2462000.0	2708000.0	2642000.0	3194000.0
Percentage of LiabilitiesFairValueDisclosure	56.1	96.4	0.0	0.0	6437.5	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	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:LiabilitiesFairValueDisclosure us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring

Period End	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	229000.0	36000.0	373000.0	273000.0	569000.0	569000.0	2092000.0
Percentage of LiabilitiesFairValueDisclosure	100.0	100.0	156.1	196.4	0.0	0.0	6537.5

us-gaap:LineOfCreditFacilityInterestRateAtPeriodEnd

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2013-12-28	2012-04-23
Value	1.8	1.8	1.8	1.8	0.03	0.03
Percentage of LineOfCreditFacilityInterestRateAtPeriodEnd	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26
Value	99	82	78	71
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity	100.0	100.0	100.0	100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

Period End	2020-12-26	2019-12-31
Value	4.7	4.5
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent	100.0	100.0

us-gaap:OperatingLossCarryforwards us-gaap:IncomeTaxAuthority

us-gaap:OperatingLossCarryforwards

us-gaap:DomesticCountry

Period End	2020-12-26	2019-12-31	2015-12-26
Value	0.085	1.997	9.9
Percentage of OperatingLossCarryforwards	100.0	100.0	100.0

us-gaap:ForeignCountry

Period End	2020-12-26	2019-12-31	2018-12-29	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29
Value	2.873	20	18	35	31	38	36	37	37
Percentage of OperatingLossCarryforwards	3380.0	1050.9	0.0	0.0	0.0	388.9	0.0	0.0	0.0

us-gaap:StateAndLocalJurisdiction

Period End	2020-12-26	2019-12-31	2018-12-29	2017-12-30	2016-12-31	2015-12-26	2014-12-27
Value	1.892	25	23	25	26	39	45
Percentage of OperatingLossCarryforwards	2225.9	1283.4	0.0	0.0	0.0	399.0	0.0

us-gaap:OtherAssetsMiscellaneousNoncurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	4360000.0	4892000.0	1668000.0	1361000.0	1533000.0	1268000.0	1351000.0	506000.0
Percentage of OtherAssetsMiscellaneousNoncurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:OtherSundryLiabilitiesCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	5931000.0	3926000.0	3559000.0	5768000.0	5152000.0	5218000.0	5786000.0	3351000.0	3185000.0	2065000.0	1659000.0	1754000.0	1963000.0	1770000.0	1873000.0	2359000.0	2209000.0	2572000.0	2324000.0
Percentage of OtherSundryLiabilitiesCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:OtherSundryLiabilitiesNoncurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2018-12-31
Value	7049000.0	6527000.0	6153000.0	5323000.0	3655000.0	2059000.0	2953000.0	3800000.0
Percentage of OtherSundryLiabilitiesNoncurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:ProductWarrantyAccrualClassifiedCurrent

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	7611000.0	6932000.0	6062000.0	6009000.0	6367000.0	6384000.0	6348000.0	4393000.0	3755000.0	3848000.0	2441000.0	4379000.0	4258000.0	4906000.0	4643000.0	4863000.0	4542000.0	4602000.0	4244000.0	3838000.0	4185000.0	4556000.0	4377000.0	4504000.0	4291000.0	3792000.0	3440000.0	2953000.0	2990000.0	3484000.0	3575000.0	3426000.0	3402000.0	3519000.0	3655000.0	4203000.0	4649000.0	4943000.0	4797000.0
Percentage of ProductWarrantyAccrualClassifiedCurrent	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:PurchaseCommitmentRemainingMinimumAmountCommitted

Period End	2020-12-26
Value	137
Percentage of PurchaseCommitmentRemainingMinimumAmountCommitted	100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-09-28	2019-06-29	2019-03-30	2018-12-31	2018-12-29	2018-09-29	2018-06-30	2018-03-31	2017-12-30	2017-09-30	2017-07-01	2017-04-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2011-12-31
Value	45.67	36.62	31.37	31.28	31.3	30.58	28.89	31.1	31.28	32.28	24.26	31.39	30.83	29.86	23.45	22.46	21.48	20.89	18.11	16.79	15.58	16.42	15.32	15.99	16.02	17.21	17.96	17.9	18.27	18.37	18.61	18.61	16.05	14.67	16.08	16.32	15.3
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	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized

onto:TwoThousandTwentyStockPlan

Period End	2020-12-26
Value	3613000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

Period End	2020-12-26	2019-12-31	2018-12-29	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29
Value	15.25	15.49	15.8	16.81	14.94	14.36	13.15	11.84	10.11
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

onto:ExercisePriceRange1

Period End	2020-12-26	2019-12-31
Value	15.25	14.08
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	100.0	90.9

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

Period End	2020-12-26	2019-09-28	2019-06-29	2019-03-30	2018-12-29	2018-09-29	2018-06-30	2017-12-30	2017-09-30	2017-07-01	2016-12-31	2016-09-24	2016-06-25	2016-03-26	2015-12-26	2015-09-26	2015-06-27	2015-03-28	2014-12-27	2014-09-27	2014-06-28	2014-03-29	2013-12-28	2013-09-28	2013-06-29	2013-03-30	2012-12-29	2012-09-29	2012-06-30	2011-12-31
Value	0.915	0.198	0.246	1.258	0.988	1.811	2.654	1.752	3.293	3.313	4.405	3.849	3.248	1.269	1.92	0.925	3.227	4.069	4.108	3.521	7.139	8.51	10	7.158	5.757	6.142	6.77	6.642	9.587	18
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	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:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

Period End	2020-12-26
Value	915000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

Period End	2020-12-26
Value	915000.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	100.0

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1

Period End	2020-12-26
Value	15.25
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	100.0

us-gaap:StandardProductWarrantyAccrual

Period End	2021-06-26	2021-03-27	2020-12-26	2020-09-26	2020-06-27	2020-03-28	2019-12-31	2019-12-28	2019-12-27	2019-09-30	2019-06-30	2019-03-31	2018-12-31	2017-12-31
Value	8223000.0	7505000.0	6485000.0	6284000.0	6815000.0	6384000.0	6348000.0	6348000.0	6348000.0	2042000.0	2143000.0	2260000.0	2441000.0	2427000.0
Percentage of StandardProductWarrantyAccrual	100.0	100.0	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:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

Period End	2021-06-26	2021-03-27	2020-12-26	2020-11-30	2020-09-26	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29
Value	100	100	100	28	28	23	4.4	4.397	6.118	11	16
Percentage of StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:TaxCreditCarryforwardAmount us-gaap:IncomeTaxAuthority

us-gaap:TaxCreditCarryforwardAmount

us-gaap:DomesticCountry

Period End	2020-12-26	2019-12-31	2018-12-29	2017-12-30	2016-12-31	2015-12-26	2013-12-28
Value	5.731	6.859	5.4	7.0	8.6	7.5	5.5
Percentage of TaxCreditCarryforwardAmount	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:ForeignCountry

Period End	2020-12-26	2019-12-31
Value	3.15	2.366
Percentage of TaxCreditCarryforwardAmount	55.0	34.5

us-gaap:StateAndLocalJurisdiction

Period End	2020-12-26	2019-12-31	2018-12-29	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28
Value	10	9.948	10	8.9	7.8	6.9	5.7	5.0
Percentage of TaxCreditCarryforwardAmount	186.1	145.0	188.9	127.1	90.7	92.0	0.0	90.9

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

Period End	2020-12-26	2019-12-31	2018-12-31
Value	1487000.0	1681000.0	1445000.0
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	100.0	100.0	100.0

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

Period End	2020-12-26	2019-12-31	2018-12-31
Value	8.863	10	4.995
Percentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	100.0	100.0	100.0

us-gaap:ValuationAllowancesAndReservesBalance us-gaap:ValuationAllowancesAndReservesType

us-gaap:ValuationAllowancesAndReservesBalance

us-gaap:AllowanceForCreditLoss

Period End	2020-12-26	2019-12-31	2018-12-31	2018-12-29	2017-12-31	2017-12-30	2016-12-31	2015-12-26
Value	0.784	1.247	0.691	0.17	0.46	0.126	0.073	0.15
Percentage of ValuationAllowancesAndReservesBalance	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

us-gaap:ValuationAllowanceOfDeferredTaxAssets

Period End	2020-12-26	2019-12-31	2018-12-31	2018-12-29	2017-12-31	2017-12-30	2016-12-31	2015-12-26	2014-12-27	2013-12-28	2012-12-29	2011-12-31	2011-01-01	2010-01-02
Value	14	14	3.172	10	2.447	13	10	36	35	11	10	8.142	7.002	39
Percentage of ValuationAllowancesAndReservesBalance	1816.1	1135.5	459.0	6450.6	532.0	10874.6	15041.1	24524.0	0.0	0.0	0.0	0.0	0.0	0.0

Line plots across dimensions of each concept

TTM Greenblatt ROC
_
(None,)

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

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementGeographical
(None,)

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:TimingOfTransferOfGoodOrService
(None,)

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

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

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

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

ONTO

Table of contents

Plots across concepts

Tables

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued us-gaap:StatementEquityComponents

us-gaap:CommonStockSharesIssued

us-gaap:CommonStock

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

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:RestrictedStockUnitsRSU

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

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold

Cost Of Revenue

us-gaap:CostOfRevenue

us-gaap:CostOfRevenue

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense

Gross Profit

us-gaap:GrossProfit

us-gaap:GrossProfit

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet

Interest Income Expense Nonoperating Net

us-gaap:InterestIncomeExpenseNonoperatingNet

us-gaap:InterestIncomeExpenseNonoperatingNet

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense

us-gaap:ResearchAndDevelopmentExpense

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

onto:PartsRevenue