Income Taxes Significant Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Jan. 02, 2021	Dec. 28, 2019
Deferred tax assets:
Operating lease liabilities	$ 71	$ 38
Workers’ compensation, general and fleet liabilities	40	36
Financing lease and other long term liabilities	78	90
Net operating loss carryforwards	64	64
Other deferred tax assets	100	63
Total gross deferred tax assets	353	291
Less valuation allowance	(35)	(36)
Total net deferred tax assets	318	255
Deferred tax liabilities:
Property and equipment	(201)	(221)
Operating lease assets	(70)	(37)
Inventories	(21)	(35)
Intangibles	(274)	(259)
Other deferred tax liabilities	(21)	(11)
Total deferred tax liabilities	(587)	(563)
Deferred Tax Liabilities, Net	$ (269)	$ (308)