Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenue:
Services	$ 5,566	$ 5,670	$ 10,900	$ 11,094
Product sales	1,751	1,564	3,391	3,008
Total revenue	7,317	7,234	14,291	14,102
Operating costs and expenses:
Cost of services	4,765	4,638	9,379	8,871
Cost of sales	1,481	1,328	2,867	2,572
Loss contingency for Macondo well incident	0	0	1,000	300
General and administrative	87	67	159	135
Total operating costs and expenses	6,333	6,033	13,405	11,878
Operating income (loss)	984	1,201	886	2,224
Interest expense, net of interest income	(71)	(80)	(142)	(154)
Other, net	(11)	(17)	(25)	(24)
Income (loss) from continuing operations before income taxes	902	1,104	719	2,046
(Provision) benefit for income taxes	(256)	(357)	(84)	(661)
Income (loss) from continuing operations	646	747	635	1,385
Income (loss) from discontinued operations, net of income tax	2	(8)	(3)	(16)
Net income (loss)	648	739	632	1,369
Noncontrolling interest in net (income) loss of subsidiaries	(4)	(2)	(6)	(5)
Net income (loss) attributable to company	644	737	626	1,364
Amounts attributable to company shareholders:
Income (loss) from continuing operations	642	745	629	1,380
Income (loss) from discontinued operations, net	2	(8)	(3)	(16)
Net income (loss) attributable to company	$ 644	$ 737	$ 626	$ 1,364
Basic income per share attributable to company shareholders:
Income (loss) from continuing operations (in dollars per share)	$ 0.69	$ 0.81	$ 0.68	$ 1.50
Income (loss) from discontinued operations, net (in dollars per share)	$ 0.01	$ (0.01)	$ (0.01)	$ (0.02)
Net income (loss) per share (in dollars per share)	$ 0.70	$ 0.80	$ 0.67	$ 1.48
Diluted income per share attributable to company shareholders:
Income (loss) from continuing operations (in dollars per share)	$ 0.69	$ 0.80	$ 0.68	$ 1.49
Income (loss) from discontinued operations, net (in dollars per share)	$ 0.00	$ (0.01)	$ (0.01)	$ (0.02)
Net income (loss) per share (in dollars per share)	$ 0.69	$ 0.79	$ 0.67	$ 1.47
Cash dividends per share (in dollars per share)	$ 0.125	$ 0.09	$ 0.250	$ 0.18
Basic weighted average common shares outstanding (in shares)	925	924	928	923
Diluted weighted average common shares outstanding (in shares)	928	926	931	926