Consolidated Statement of Equity (Unaudited) - 3 months ended Mar. 31, 2017 - USD ($) shares in Millions, $ in Millions	Total	Total Stockholder's Equity	(Accumulated Deficit) Retained Earnings	Common Stock Held in Treasury	Common Stock	Capital in Excess of Par Value	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balance (in shares) at Dec. 31, 2016				129	1,574
Balance at Dec. 31, 2016	$ 9,257	$ 6,051	$ (16,540)	$ (3,708)	$ 157	$ 26,690	$ (548)	$ 3,206
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercised and issued stock-based awards (in shares)					2
Exercised and issued stock-based awards	5	5			$ 1	4
Stock-based compensation	31	31				31
Tender of shares for stock-based awards	(9)	(9)		$ (9)
Dividends on common stock	1	1	1
Dividends to noncontrolling interests	(15)							(15)
Net income attributable to common stockholders	228	228	228
Net income attributable to noncontrolling interests, including discontinued operations	78							78
Other comprehensive income	11	11					11
Balance (in shares) at Mar. 31, 2017				129	1,576
Balance at Mar. 31, 2017	$ 9,587	$ 6,318	$ (16,311)	$ (3,717)	$ 158	$ 26,725	$ (537)	$ 3,269