Income Taxes - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended	12 Months Ended
	Jan. 01, 2018	Dec. 22, 2017	Dec. 31, 2017	Dec. 31, 2017	Dec. 30, 2016	Dec. 25, 2015	Dec. 26, 2014
Operating Loss Carryforwards [Line Items]
Earnings before income taxes				$ 3,142	$ 2,741	$ 3,138
Non-cash credit to income tax expense			$ 3,600	$ (3,506)	0	0
Non-cash credit to income tax expense amount per share		$ 3.81	$ 3.91
U.S. corporate tax rate (as a percent)				35.00%
Income tax adjustment				$ 21
State income taxes expense (benefit)				(102)	(83)	(86)
Unrecognized tax benefits			$ 24	24	25	23	$ 21
Amount of unrecognized tax benefits that may favorably effect the effective income tax rate			19	19	16	15
Income Tax Uncertainties [Abstract]
Reduction (Increase) to income tax reserves due to interest and penalties of prior year tax positions			3	3	2	2
Previously recorded liabilities for interest and penalties of prior period tax positions			$ 6	6	6	$ 4
Federal and State Legislative
Operating Loss Carryforwards [Line Items]
Income tax adjustment					10
State income taxes expense (benefit)				$ 7	$ 4
Affiliated Entity
Operating Loss Carryforwards [Line Items]
Non-cash credit to income tax expense		$ 142
Non-cash credit to income tax expense amount per share		$ 0.10
Subsequent Event
Operating Loss Carryforwards [Line Items]
U.S. corporate tax rate (as a percent)	21.00%