Income Taxes - Schedule of Income Tax Expense Reconciled to Tax Computed at Statutory Rates (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 30, 2016	Dec. 25, 2015
Reconciliation between the statutory income tax rate and the effective income tax rate [Abstract]
Federal Income Taxes		$ 1,100	$ 959	$ 1,098
State Income Taxes		102	83	86
Other		(25)	(15)	(14)
Income Tax Expense		$ (2,329)	$ 1,027	$ 1,170
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal Income Taxes		35.00%	35.00%	35.00%
State Income Taxes		3.20%	3.00%	2.70%
Other		(0.80%)	(0.50%)	(0.40%)
Income Tax Rate		(74.20%)	37.50%	37.30%
Effect of change in enacted tax rate	$ 3,600	$ (3,506)	$ 0	$ 0
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent		(111.60%)	0.00%	0.00%