Schedule of Stockholders' Equity (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 25, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
Stockholders Equity [Line Items]
Beginning Balance			$ 1,603
Net income	$ 210	$ (58)	256	$ (13)
Repurchase of common stock for treasury	(26)		(26)
Other comprehensive income	5	$ 3	11	$ (51)
Amortization of long-term incentive stock grants			16
Ending Balance	$ 1,860		$ 1,860