Business Dispositions and Combinations - Gain on Sale of Business (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax gain	$ 681	$ 95	$ 0
Gain on sale	681	95	$ 0
Centrifugal Compression business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
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
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
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