Condensed Consolidated Statements of Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interests [Member]
Beginning Balance at Dec. 31, 2014	$ 5,360	$ 1	$ 5,798	$ (6,111)	$ 6,181	$ (584)	$ 75
Beginning Balance, Shares at Dec. 31, 2014		82.0
Class of Stock [Line Items]
Net income	109				105		4
Other comprehensive income (loss)	(79)					(79)
Distributions to noncontrolling interests	(5)						(5)
Cash dividends declared on common stock	(55)				(55)
Shares issued:
Employee savings plans	29		29
Employee savings plans, Shares		0.3
Exercise of stock options	$ 60		60
Exercise of stock options, Shares		0.5
Employee stock purchase plan
Employee stock purchase plan, Shares		0.1
Vesting of restricted stock and performance units
Vesting of restricted stock and performance units, Shares		0.7
Employee restricted stock units surrendered in lieu of income tax withholding	$ (33)		(33)
Employee restricted stock units surrendered in lieu of income tax withholding, Shares		(0.2)
Stock-based compensation expense	13		13
Treasury stock purchased	(100)			(100)
Treasury stock purchased, Shares		(0.8)
Other	3		3
Other, Shares
Ending Balance at Mar. 27, 2015	5,302	$ 1	5,870	(6,211)	6,231	(663)	74
Ending Balance, Shares at Mar. 27, 2015		82.6
Beginning Balance at Dec. 31, 2015	4,429	$ 1	6,051	(6,851)	5,728	(574)	74
Beginning Balance, Shares at Dec. 31, 2015		78.1
Class of Stock [Line Items]
Net income	230				227		3
Other comprehensive income (loss)	16					16
Distributions to noncontrolling interests	(4)						(4)
Cash dividends declared on common stock	(54)				(54)
Shares issued:
Employee savings plans	32		32
Employee savings plans, Shares		0.3
Exercise of stock options	$ 14		$ 14
Exercise of stock options, Shares		0.2
Employee stock purchase plan
Employee stock purchase plan, Shares		0.1
Vesting of restricted stock and performance units
Vesting of restricted stock and performance units, Shares		0.5
Employee restricted stock units surrendered in lieu of income tax withholding	$ (20)		$ (20)
Employee restricted stock units surrendered in lieu of income tax withholding, Shares		(0.2)
Stock-based compensation expense	6		6
Treasury stock purchased	(198)			(198)
Treasury stock purchased, Shares		(1.7)
Ending Balance at Mar. 25, 2016	$ 4,451	$ 1	$ 6,083	$ (7,049)	$ 5,901	$ (558)	$ 73
Ending Balance, Shares at Mar. 25, 2016		77.3