Consolidated Statements of Changes in Equity (Unaudited) (USD $) In Millions, except Share data	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Loss	Accumulated Translation Adjustment [Member]	Non-controlling Interest
Stockholders' Equity, Including Portion Attributable to Noncontrolling interest at Dec. 31, 2013	$ 7,954	$ 3,907	$ 4,150	$ (136)		$ 33
Beginning Balance, shares at Dec. 31, 2013	177,087,230	177,087,000
Net Income	327		326			1
Dividends declared on common stock	(116)		(116)
Stock Repurchased During Period, Shares		(690,000)
Stock Repurchased During Period, Value	(50)	(50)
Other Comprehensive Income (Loss), Net of Tax	(1)				(1)
Stock-based compensation, distributions to noncontrolling interests and other, shares		620,000
Stock-based compensation, distributions to noncontrolling interests and other	23	37				(14)
Stockholders' Equity, Including Portion Attributable to Noncontrolling interest at Mar. 31, 2014	$ 8,137	$ 3,894	$ 4,360	$ (137)		$ 20
Ending Balance, shares at Mar. 31, 2014	177,016,824	177,017,000