Income Taxes Reconciliation of (Benefit) Provision for Income Taxes from Continuing Operations (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Income Tax Disclosure [Abstract]
Federal income taxes computed at statutory rate									$ 107	$ 104	$ 141
State income taxes, net of federal income tax benefit									24	20	16
Stock-based compensation									(4)	(6)	(26)
Non-deductible expenses									4	3	5
Change in the valuation allowance for deferred tax assets									6	1	(1)
Net operating loss expirations									0	3	1
Tax credits									(10)	(6)	(3)
Change in unrecognized tax benefits									(1)	(21)	(1)
Change in U.S. federal statutory tax rate									0	(8)	(173)
Other									0	(1)	1
Total income tax provision (benefit)	$ 29	$ 39	$ 38	$ 20	$ 32	$ 26	$ 35	$ (4)	$ 126	$ 89	$ (40)