Consolidated Statements of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenue:
Sales	$ 6,382	$ 5,516	$ 4,809
Services	13,449	8,898	4,855
Total revenue	19,831	14,414	9,664
Costs and expenses:
Cost of sales	5,122	4,359	3,858
Cost of services	10,142	6,825	3,539
Research and engineering	462	429	397
Marketing, general and administrative	1,190	1,250	1,120
Impairment of trade names	315
Acquisition-related costs	0	134	18
Total costs and expenses	17,231	12,997	8,932
Operating income	2,600	1,417	732
Gain on investments		6	4
Interest expense, net	(221)	(141)	(125)
Loss on early extinguishment of debt	(40)
Income before income taxes	2,339	1,282	611
Income taxes	(596)	(463)	(190)
Net income	1,743	819	421
Net income attributable to noncontrolling interests	(4)	(7)
Net income attributable to Baker Hughes	$ 1,739	$ 812	$ 421
Basic earnings per share attributable to Baker Hughes	$ 3.99	$ 2.06	$ 1.36
Diluted earnings per share attributable to Baker Hughes	$ 3.97	$ 2.06	$ 1.36