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Goodwill and Intangible Assets - Identified Intangible Assets, by Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	$ 527	$ 852
Additions to intangible assets	22	20
Impairment		(292)
Amortization	(43)	(49)
Currency translation adjustments	(3)	(4)
Ending Balance	503	527
Wellbore Technologies [Member]
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	253	326
Additions to intangible assets	22	20
Impairment		(78)
Amortization	(10)	(12)
Currency translation adjustments	(1)	(3)
Ending Balance	264	253
Completion & Production Solutions [Member]
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	47	275
Impairment		(214)
Amortization	(5)	(9)
Currency translation adjustments		(5)
Ending Balance	42	47
Rig Technologies [Member]
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	227	251
Amortization	(28)	(28)
Currency translation adjustments	(2)	4
Ending Balance	$ 197	$ 227

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Intangible Asset Excluding Goodwill.

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Intangible assets acquired during period.

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Intangible assets translation and purchase accounting adjustments.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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