Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenue:
Services	$ 5,334	$ 5,424
Product sales	1,640	1,444
Total revenue	6,974	6,868
Operating costs and expenses:
Cost of services	4,614	4,233
Cost of sales	1,386	1,244
Loss contingency for Macondo well incident	1,000	300
General and administrative	72	68
Total operating costs and expenses	7,072	5,845
Operating income (loss)	(98)	1,023
Interest expense, net of interest income	(71)	(74)
Other, net	(14)	(7)
Income (loss) from continuing operations before income taxes	(183)	942
(Provision) benefit for income taxes	172	(304)
Income (loss) from continuing operations	(11)	638
Income (loss) from discontinued operations, net of income tax	(5)	(8)
Net income (loss)	(16)	630
Noncontrolling interest in net (income) loss of subsidiaries	(2)	(3)
Net income (loss) attributable to company	(18)	627
Amounts attributable to company shareholders:
Income (loss) from continuing operations	(13)	635
Income (loss) from discontinued operations, net	(5)	(8)
Net income (loss) attributable to company	$ (18)	$ 627
Basic income per share attributable to company shareholders:
Income (loss) from continuing operations (in dollars per share)	$ (0.01)	$ 0.69
Income (loss) from discontinued operations, net (in dollars per share)	$ (0.01)	$ (0.01)
Net income (loss) per share (in dollars per share)	$ (0.02)	$ 0.68
Diluted income per share attributable to company shareholders:
Income from continuing operations (in dollars per share)	$ (0.01)	$ 0.69
Loss from discontinued operations, net (in dollars per share)	$ (0.01)	$ (0.01)
Net income per share (in dollars per share)	$ (0.02)	$ 0.68
Cash dividends per share (in dollars per share)	$ 0.125	$ 0.09
Basic weighted average common shares outstanding (in shares)	931	923
Diluted weighted average common shares outstanding (in shares)	931	926