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Segment Information - Operating Profit (Loss) by Segment (Details) - USD ($) $ in Millions	3 Months Ended								6 Months Ended	12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information
Revenues	$ 6,347	$ 5,882	$ 5,994	$ 5,615	$ 6,264	$ 5,665	$ 5,548	$ 5,399		$ 23,838	$ 22,877	$ 17,179
Segment income (loss) before income taxes
Income (loss) before income taxes										753	680	(335)
Separation and merger related	$ (57)	$ (54)	$ (40)	$ (34)	$ (41)	$ (17)	$ (50)	$ (46)		(184)	(153)	(373)
Other non operating income (loss), net										(84)	202	80
Interest expense, net										(237)	(223)	(131)
Operating segments
Segment income (loss) before income taxes
Income (loss) before income taxes										2,035	1,796	1,115
Corporate
Segment income (loss) before income taxes
Income (loss) before income taxes										(433)	(405)	(370)
Segment reconciling items
Segment income (loss) before income taxes
Inventory impairment and related charges										0	(105)	(244)
Restructuring, impairment and other										(342)	(433)	(412)
Separation and merger related										(184)	(153)	(373)
Other non operating income (loss), net										(84)	202	80
Interest expense, net										(237)	(223)	(131)
Oilfield Services
Segment Reporting Information
Revenues										12,889	11,617	5,881
Oilfield Services \| Operating segments
Segment income (loss) before income taxes
Income (loss) before income taxes										917	785	67
Oilfield Equipment
Segment Reporting Information
Revenues										2,921	2,641	2,661
Oilfield Equipment \| Operating segments
Segment income (loss) before income taxes
Income (loss) before income taxes										55	0	26
Turbo-machinery & Process Solutions
Segment Reporting Information
Revenues										5,536	6,015	6,295
Turbo-machinery & Process Solutions \| Operating segments
Segment income (loss) before income taxes
Income (loss) before income taxes										719	621	665
Digital Solutions
Segment Reporting Information
Revenues										2,492	2,604	2,342
Digital Solutions \| Operating segments
Segment income (loss) before income taxes
Income (loss) before income taxes										$ 343	$ 390	$ 357
GE Transaction Agreement
Segment income (loss) before income taxes
Inventory adjustment, write-up									$ 87