Condensed Consolidated Statement of Changes in Equity (Unaudited) - 9 months ended Sep. 30, 2016 - USD ($) shares in Thousands, $ in Millions	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Noncontrolling Interests [Member]
Beginning balance at Dec. 31, 2015	$ 5,367	$ 6	$ 4,827	$ 6,939	$ (127)	$ (6,300)	$ 22
Beginning balance, shares at Dec. 31, 2015		630,282				(183,105)
Consolidated net income	846			847			(1)
Other comprehensive income (loss), net of taxes	64				64
Cash dividends	(546)			(546)
Equity-based compensation transactions, including dividend equivalents, net of taxes	159		45	(5)		$ 119
Equity-based compensation transactions, including dividend equivalents, net of taxes, shares						3,401
Common stock repurchase program	(500)					$ (500)
Common stock repurchase program, shares						(8,402)
Other	(7)		2			$ (12)	3
Other, shares						(179)
Ending balance at Sep. 30, 2016	$ 5,383	$ 6	$ 4,874	$ 7,235	$ (63)	$ (6,693)	$ 24
Ending balance, shares at Sep. 30, 2016		630,282				(188,285)