Consolidated Condensed Statements of Changes in Equity - USD ($) $ in Millions	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Non-controlling Interests
Balance at Dec. 31, 2014	$ 18,730	$ 434	$ 7,062	$ 11,878	$ (749)	$ 0	$ 105
Comprehensive loss:
Net loss	(783)			(777)			(6)
Other comprehensive income	(90)				(90)
Activity related to stock plans	48	2	54			(8)
Stock-based compensation	63		63
Cash dividends	(148)			(148)
Net activity related to noncontrolling interests	(23)		(24)				1
Balance at Jun. 30, 2015	17,797	436	7,155	10,953	(839)	(8)	100
Balance at Dec. 31, 2015	16,382	437	7,261	9,614	(1,005)	(9)	84
Comprehensive loss:
Net loss	(1,893)			(1,892)			(1)
Other comprehensive income	54				54
Activity related to stock plans	3	2	13			(12)
Repurchase and retirement of common stock	(500)	(11)	(489)
Stock-based compensation	68		68
Cash dividends	(148)			(148)
Balance at Jun. 30, 2016	$ 13,966	$ 428	$ 6,853	$ 7,574	$ (951)	$ (21)	$ 83