Income Taxes - Schedule of Change to Total Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 30, 2016	Dec. 25, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of the year	$ 25	$ 23	$ 21
Additions based on tax positions related to current year	1	1	1
Additions based on tax positions related to prior years	4	4	4
Reductions based on tax positions related to prior years	0	0	0
Settlements with taxing authorities, decrease in benefits	(4)	0
Settlements with taxing authorities, increase in benefits			1
Lapse of statute of limitations	(2)	(3)	(4)
Balance at end of the year	$ 24	$ 25	$ 23