Consolidated Changes in Stockholders' Equity - USD ($) $ in Millions	Total	Common Stock	Capital in Excess of Par value	Retained Earnings	Accumulated Other Elements of Comprehensive Income (Loss)	Treasury Stock	Non-controlling Interests
Beginning Balance at Dec. 31, 2012	$ 5,566	$ 3	$ 2,094	$ 4,121	$ (30)	$ (622)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Formation of OneSubsea, net of tax effects of $90	2,010		1,083				927
Net income	724			699			25
Other comprehensive income (loss)	(44)				(50)		6
Non-cash stock compensation expense	54		54
Net change in treasury shares owned by participants in nonqualified deferred compensation plans	(2)					(2)
Purchase of treasury stock	(1,533)					(1,533)
Treasury stock issued under stock compensation plans	31		(28)			59
Tax benefit of stock compensation plan transactions	10		10
Contributions from noncontrolling interest owners	75						75
Purchases of noncontrolling ownership interests	(7)						(7)
Other noncontrolling interests	38						38
Other	(6)		(6)
Ending Balance at Dec. 31, 2013	6,916	3	3,207	4,820	(80)	(2,098)	1,064
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	848			811			37
Other comprehensive income (loss)	(634)				(460)		(174)
Non-cash stock compensation expense	54		54
Purchase of treasury stock	(1,750)					(1,750)
Treasury stock issued under stock compensation plans	42		(12)			54
Tax benefit of stock compensation plan transactions	6		6
Purchases of noncontrolling ownership interests	4						4
Distributions to noncontrolling interest owners	(42)						(42)
Ending Balance at Dec. 31, 2014	5,444	3	3,255	5,631	(540)	(3,794)	889
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	568			501			67
Other comprehensive income (loss)	(451)				(337)		(114)
Non-cash stock compensation expense	49		49
Purchase of treasury stock	(236)					(236)
Treasury stock issued under stock compensation plans	20		(41)			61
Tax benefit of stock compensation plan transactions	2		2
Purchases of noncontrolling ownership interests	18						18
Distributions to noncontrolling interest owners	(21)						(21)
Other	(3)						(3)
Ending Balance at Dec. 31, 2015	$ 5,390	$ 3	$ 3,265	$ 6,132	$ (877)	$ (3,969)	$ 836