Consolidated Statements of Changes in Equity (Unaudited) (USD $) In Millions, except Share data	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Loss	Accumulated Defined Benefit Plans Adjustment [Member]	Accumulated Net Unrealized Investment Gain (Loss) [Member]	Accumulated Translation Adjustment [Member]	Noncontrolling 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	610		606					4
Dividends declared on common stock	(354)		(354)
Repurchase of common stock, Shares		(713,000)
Repurchase of common stock, Value	(52)	(52)
Other Comprehensive Income (Loss), Net of Tax	3				3	1	(1)
Stock-based compensation, distributions to noncontrolling interests and other, shares		617,000
Stock-based compensation, distributions to noncontrolling interests and other	25	45						(20)
Stockholders' Equity, Including Portion Attributable to Noncontrolling interest at Sep. 30, 2014	$ 8,186	$ 3,900	$ 4,402	$ (133)				$ 17
Ending Balance, shares at Sep. 30, 2014	176,991,277	176,991,000