Goodwill - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2021
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 12,968	$ 16,042	$ 12,980
Impairment (see Note 3)		(3,070)
Acquisitions			18
Impact of changes in exchange rates and other	12	(4)	(8)
Goodwill, Ending Balance	12,980	12,968	12,990
Production Systems
Goodwill [Line Items]
Goodwill, Beginning Balance	854		853
Impact of changes in exchange rates and other	(1)
Goodwill, Ending Balance	853	854	853
Operating Segments \| Reservoir Characterization
Goodwill [Line Items]
Goodwill, Beginning Balance	4,560	4,560
Goodwill, Ending Balance		4,560
Operating Segments \| Drilling
Goodwill [Line Items]
Goodwill, Beginning Balance	5,443	7,092
Impairment (see Note 3)		(1,659)
Impact of changes in exchange rates and other		10
Goodwill, Ending Balance		5,443
Operating Segments \| Production
Goodwill [Line Items]
Goodwill, Beginning Balance	2,704	3,949
Impairment (see Note 3)		(1,228)
Impact of changes in exchange rates and other		(17)
Goodwill, Ending Balance		2,704
Operating Segments \| Cameron
Goodwill [Line Items]
Goodwill, Beginning Balance	261	441
Impairment (see Note 3)		(183)
Impact of changes in exchange rates and other		3
Goodwill, Ending Balance		261
Operating Segments \| Digital Integration
Goodwill [Line Items]
Goodwill, Beginning Balance	2,041		2,047
Acquisitions			18
Impact of changes in exchange rates and other	6		(13)
Goodwill, Ending Balance	2,047	2,041	2,052
Operating Segments \| Reservoir Performance
Goodwill [Line Items]
Goodwill, Beginning Balance	3,806		3,802
Impact of changes in exchange rates and other	(4)		2
Goodwill, Ending Balance	3,802	3,806	3,804
Operating Segments \| Well Construction
Goodwill [Line Items]
Goodwill, Beginning Balance	6,267		6,278
Impact of changes in exchange rates and other	11		3
Goodwill, Ending Balance	$ 6,278	$ 6,267	$ 6,281

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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