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Goodwill - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 24,931	$ 25,118
Acquisitions		39
Impairment	(8,828)
Business divestiture		(175)
Impact of changes in exchange rates and other	(61)	(51)
Goodwill, Ending Balance	16,042	24,931
Cameron
Goodwill [Line Items]
Goodwill, Beginning Balance	5,439	5,447
Impairment	(5,001)
Impact of changes in exchange rates and other	3	(8)
Goodwill, Ending Balance	441	5,439
Operating Segments | Reservoir Characterization
Goodwill [Line Items]
Goodwill, Beginning Balance	4,703	4,848
Acquisitions		39
Impairment	(97)
Business divestiture		(175)
Impact of changes in exchange rates and other	(46)	(9)
Goodwill, Ending Balance	4,560	4,703
Operating Segments | Drilling
Goodwill [Line Items]
Goodwill, Beginning Balance	10,111	10,126
Impairment	(3,025)
Impact of changes in exchange rates and other	6	(15)
Goodwill, Ending Balance	7,092	10,111
Operating Segments | Production
Goodwill [Line Items]
Goodwill, Beginning Balance	4,678	4,697
Impairment	(705)
Impact of changes in exchange rates and other	(24)	(19)
Goodwill, Ending Balance	$ 3,949	$ 4,678

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