Goodwill - Changes in Carrying Amount of Goodwill (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($)
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 16,042
Impairment (See Note 2)	(3,070)
Impact of changes in exchange rates and other	(18)
Goodwill, Ending Balance	12,954
Cameron
Goodwill [Line Items]
Goodwill, Beginning Balance	441
Impairment (See Note 2)	(183)
Goodwill, Ending Balance	258
Operating Segments | Reservoir Characterization
Goodwill [Line Items]
Goodwill, Beginning Balance	4,560
Impact of changes in exchange rates and other	(3)
Goodwill, Ending Balance	4,557
Operating Segments | Drilling
Goodwill [Line Items]
Goodwill, Beginning Balance	7,092
Impairment (See Note 2)	(1,659)
Impact of changes in exchange rates and other	6
Goodwill, Ending Balance	5,439
Operating Segments | Production
Goodwill [Line Items]
Goodwill, Beginning Balance	3,949
Impairment (See Note 2)	(1,228)
Impact of changes in exchange rates and other	(21)
Goodwill, Ending Balance	$ 2,700