UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interests [Member]	Total
Beginning Balance at Dec. 31, 2015	$ 1	$ 6,051	$ (6,851)	$ 5,728	$ (574)	$ 74	$ 4,429
Beginning Balance (in shares) at Dec. 31, 2015	78,100,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				227		3	230
Other comprehensive income					16		16
Distributions to noncontrolling interests						(4)	(4)
Cash dividends declared				(54)			(54)
Shares issued:
Employee savings plans		32					32
Employee savings plans (in shares)	300,000
Exercise of stock options		14					14
Exercise of stock options (in shares)	200,000
Employee stock purchase plan		0					0
Employee stock purchase plan (in shares)	100,000
Vesting of restricted stock and performance units							0
Vesting of restricted stock and performance units (in shares)	500,000
Repurchases of common stock to satisfy tax withholding obligations		(20)					(20)
Repurchases of common stock to satisfy tax withholding obligations (in shares)	(200,000)
Stock-based compensation expense		6					6
Treasury stock purchased			(198)				(198)
Treasury stock purchased (in shares)	(1,700,000)
Ending Balance at Mar. 25, 2016	$ 1	6,083	(7,049)	5,901	(558)	73	4,451
Ending Balance (in shares) at Mar. 25, 2016	77,300,000
Beginning Balance at Dec. 31, 2016	$ 1	6,284	(7,224)	6,218	(726)	71	4,624
Beginning Balance (in shares) at Dec. 31, 2016	77,200,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				164		4	168
Other comprehensive income					28		28
Distributions to noncontrolling interests						(4)	(4)
Cash dividends declared				(59)			(59)
Shares issued:
Employee savings plans		36					36
Employee savings plans (in shares)	200,000
Exercise of stock options		13					13
Exercise of stock options (in shares)	200,000
Employee stock purchase plan		0					0
Employee stock purchase plan (in shares)	100,000
Vesting of restricted stock and performance units							0
Vesting of restricted stock and performance units (in shares)	300,000
Repurchases of common stock to satisfy tax withholding obligations		(18)					(18)
Repurchases of common stock to satisfy tax withholding obligations (in shares)	(100,000)
Stock-based compensation expense		14					$ 14
Treasury stock purchased (in shares)							0
Ending Balance at Mar. 31, 2017	$ 1	$ 6,329	$ (7,224)	$ 6,323	$ (698)	$ 71	$ 4,802
Ending Balance (in shares) at Mar. 31, 2017	77,900,000