Consolidated Statements of Equity (USD $) In Millions, except Share data, unless otherwise specified	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, 2012	$ 5,527	$ 1	$ 5,313	$ (4,488)	$ 5,175	$ (550)	$ 76
Beginning Balance, Shares at Dec. 31, 2012		90,400,000
Class of Stock [Line Items]
Net income	368				366		2
Other comprehensive income	(29)					(29)
Distributions to noncontrolling interests	(4)						(4)
Cash dividends paid on common stock	(99)				(99)
Shares issued:
Employee savings plans	68		68
Employee savings plans, Shares		900,000
Exercise of stock options	31		31
Exercise of stock options, Shares		500,000
Employee stock purchase plan	18		18
Employee stock purchase plan, Shares		300,000
Stock-based compensation expense	28		28
Treasury stock purchased	(248)			(248)
Treasury stock purchased, Shares		(3,100,000)
Other	(10)		(8)		(2)
Other, Shares		400,000
Ending Balance at Jun. 28, 2013	5,650	1	5,450	(4,736)	5,440	(579)	74
Ending Balance, Shares at Jun. 28, 2013		89,400,000
Beginning Balance at Dec. 31, 2013	6,056	1	5,652	(5,288)	5,726	(110)	75
Beginning Balance, Shares at Dec. 31, 2013		85,800,000
Class of Stock [Line Items]
Net income	313				307		6
Other comprehensive income	14					14
Distributions to noncontrolling interests	(6)						(6)
Cash dividends paid on common stock	(104)				(104)
Shares issued:
Employee savings plans	74		74
Employee savings plans, Shares		700,000
Exercise of stock options	101		101
Exercise of stock options, Shares		1,100,000
Employee stock purchase plan	18		18
Employee stock purchase plan, Shares		200,000
Stock-based compensation expense	29		29
Treasury stock purchased	(333)			(333)
Treasury stock purchased, Shares		(2,900,000)
Retirement of Convertible Contingent Debt Securities	(160)		(160)
Other	(23)		(21)		(2)
Other, Shares		400,000
Ending Balance at Jun. 27, 2014	$ 5,979	$ 1	$ 5,693	$ (5,621)	$ 5,927	$ (96)	$ 75
Ending Balance, Shares at Jun. 27, 2014		85,300,000