CONSOLIDATED CONDENSED STATEMENT OF CHANGES IN EQUITY (USD $) In Millions	Total	Common Stock [Member]	Capital in Excess of Par value [Member]	Retained Earnings [Member]	Accumulated Other Elements of Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Noncontrolling Interests [Member]
Balance at Dec. 31, 2012	$ 5,566.1	$ 2.6	$ 2,094.6	$ 4,120.7	$ (30.0)	$ (621.8)	$ 0
Formation of OneSubsea, net of tax effects of $132.6		0	1,051.8	0	0	0	915.6
Net income		0	0	288.8	0	0	0
Other comprehensive income (loss), net of tax		0	0	0	(125.8)	0	0
Non-cash stock compensation expense	27.4	0	27.4	0	0	0	0
Purchase of stock under nonqualified deferred compensation plans		0	0	0	0	(2.1)	0
Purchase of treasury stock		0	0	0	0	(130.6)	0
Treasury stock issued under stock compensation plans		0	(23.9)	0	0	53.0	0
Tax benefit of stock compensation plan transactions		0	5.6	0	0	0	0
Other noncontrolling interests		0	0	0	0	0	38.4
Balance at Jun. 30, 2013	$ 7,664.3	$ 2.6	$ 3,155.5	$ 4,409.5	$ (155.8)	$ (701.5)	$ 954.0