UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Millions, $ 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	78.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				374		7	381
Other comprehensive income					30		30
Distributions to noncontrolling interests						(8)	(8)
Cash dividends declared				(110)			(110)
Shares issued:
Employee savings plans		60					60
Employee savings plans (in shares)	0.5
Exercise of stock options		38					38
Exercise of stock options (in shares)	0.4
Employee stock purchase plan		16					16
Employee stock purchase plan (in shares)	0.2
Vesting of restricted stock and performance units							0
Vesting of restricted stock and performance units (in shares)	0.5
Repurchases of common stock to satisfy tax withholding obligations		(20)					(20)
Repurchases of common stock to satisfy tax withholding obligations (in shares)	(0.2)
Stock-based compensation expense		19					19
Treasury stock purchased			(276)				(276)
Treasury stock purchased (in shares)	(2.3)
Ending Balance at Jun. 24, 2016	$ 1	6,164	(7,127)	5,992	(544)	73	4,559
Ending Balance (in shares) at Jun. 24, 2016	77.2
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	77.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				366		9	375
Other comprehensive income					90		90
Distributions to noncontrolling interests						(9)	(9)
Cash dividends declared				(118)			(118)
Shares issued:
Employee savings plans		60					60
Employee savings plans (in shares)	0.4
Exercise of stock options		25					25
Exercise of stock options (in shares)	0.3
Employee stock purchase plan		16					16
Employee stock purchase plan (in shares)	0.1
Vesting of restricted stock and performance units							0
Vesting of restricted stock and performance units (in shares)	0.3
Repurchases of common stock to satisfy tax withholding obligations		(18)					(18)
Repurchases of common stock to satisfy tax withholding obligations (in shares)	(0.1)
Stock-based compensation expense		28					28
Treasury stock purchased			(26)				(26)
Treasury stock purchased (in shares)	(0.2)
Ending Balance at Jun. 30, 2017	$ 1	$ 6,395	$ (7,250)	$ 6,466	$ (636)	$ 71	$ 5,047
Ending Balance (in shares) at Jun. 30, 2017	78.0