Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 28, 2019	Dec. 29, 2018
Income Tax Disclosure [Abstract]
Tax expense at statutory rates	$ 208,209	$ 137,447	$ 168,179
State income tax, net of federal benefit	24,234	18,561	25,321
Tax credits	(21,254)	(22,750)	(19,737)
Foreign rate differential	1,973	(6,328)	(4,851)
Share-based compensation	(1,303)	(8,090)	(1,696)
Permanent differences	(6,534)	3,278	6,224
Other, net	6,060	2,940	(2,648)
Total income tax expense	$ 211,385	$ 125,058	$ 170,792

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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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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit).

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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