Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Provision (benefit) at statutory tax rate	$ 36,580	$ (126,025)	$ 52,886	$ (84,798)
State taxes, net of federal benefit	2,083	(11,533)	4,091	(7,504)
International effective tax rate differential	2,147	3,238	915	8,217
U.S Tax on foreign earnings	30	4,953	3,166	9,880
Changes in tax accruals	1,387	902	7,595	920
Tax credits	(756)	(1,971)	(1,511)	(4,001)
Non-deductible portion of impairment of goodwill	0	76,153	0	76,153
Other	(617)	1,914	1,604	2,671
Provision (benefit) for income taxes	$ 40,854	$ (52,369)	$ 68,746	$ 1,538

U.S Tax on foreign earnings

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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