Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Discontinued Operations [Line Items]
Cash consideration	$ 1,400		$ 1,400
Results of Operations [Abstract]
Gain on sale of Compression businesses, before tax	0	$ 0	681	$ 95
Income from discontinued operations, net of income taxes	(1)	3	431	31
Gain on the sale [Abstract]
Pre-tax gain	0	0	681	95
Discontinued Operations
Results of Operations [Abstract]
Revenues	0	64	0	348
Cost of sales (excluding depreciation and amortization)	0	(43)	0	(246)
All other (costs) gains	(1)	(17)	(2)	(75)
Gain on sale of Compression businesses, before tax	0	0	681	95
Income before income taxes	(1)	4	679	122
Income tax provision	0	(1)	(248)	(91)
Income from discontinued operations, net of income taxes	(1)	3	431	31
Gain on the sale [Abstract]
Pre-tax gain	0	$ 0	681	$ 95
Centrifugal Compression business
Results of Operations [Abstract]
Gain on sale of Compression businesses, before tax			681
Gain on the sale [Abstract]
Sales price			850
Net assets sold			(160)
Transaction and other costs associated with the sale			(9)
Pre-tax gain			681
Tax provision			(248)
Gain on sale			433
Reciprocating Compression business
Results of Operations [Abstract]
Gain on sale of Compression businesses, before tax			95
Gain on the sale [Abstract]
Sales price			550
Net assets sold			(442)
Transaction and other costs associated with the sale			(13)
Pre-tax gain			95
Tax provision			(85)
Gain on sale			10
Nondeductible Goodwill	$ 192		$ 192