Condensed Consolidated Statement of Changes in Equity (Unaudited) - 3 months ended Mar. 31, 2017 - USD ($) shares in Thousands, $ in Millions	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Noncontrolling Interests [Member]
Beginning balance at Dec. 31, 2016	$ 5,320	$ 6	$ 4,850	$ 7,388	$ (80)	$ (6,867)	$ 23
Beginning balance, shares at Dec. 31, 2016		630,282				(190,967)
Consolidated net income	297			298			(1)
Other comprehensive income, net of tax expense	14				14
Cash dividends	(194)			(194)
Equity-based compensation transactions, net	103		(9)	5		$ 107
Equity-based compensation transaction, shares						2,991
Common stock repurchase program			45			$ (45)
Common stock repurchase program, shares						(402)
Other, net	(2)		(1)				(1)
Other, net, shares						1
Ending balance at Mar. 31, 2017	$ 5,538	$ 6	$ 4,885	$ 7,497	$ (66)	$ (6,805)	$ 21
Ending balance, shares at Mar. 31, 2017		630,282				(188,377)