Accumulated Other Comprehensive Income (Loss) Activity, Net of Tax (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 25, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ 1,603
Total other comprehensive income (loss), net of tax, where applicable	$ 5	$ 3	11	$ (51)
Ending Balance	1,860		1,860
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			108
Other comprehensive income (loss) activity before reclassifications			12
Total other comprehensive income (loss), net of tax, where applicable			12
Ending Balance	120		120
Change in Deferred Pension and Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(78)
Other comprehensive income (loss) activity before reclassifications			(1)
Total other comprehensive income (loss), net of tax, where applicable			(1)
Ending Balance	(79)		(79)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			30
Other comprehensive income (loss) activity before reclassifications			11
Total other comprehensive income (loss), net of tax, where applicable			11
Ending Balance	$ 41		$ 41