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Asset Impairments - Identified Intangible Assets, by Segment (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2020 USD ($)
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	$ 852
Impairment	(292)
Amortization	(38)
Currency translation adjustments and other	(6)
Ending Balance	516
Wellbore Technologies [Member]
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	326
Impairment	(78)
Amortization	(9)
Currency translation adjustments and other	(3)
Ending Balance	236
Completion & Production Solutions [Member]
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	275
Impairment	(214)
Amortization	(8)
Currency translation adjustments and other	(5)
Ending Balance	48
Rig Technologies [Member]
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	251
Amortization	(21)
Currency translation adjustments and other	2
Ending Balance	$ 232

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- Definition

Intangible Asset Excluding Goodwill.

+ References

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- Definition

Intangible assets translation and purchase accounting adjustments.

+ References

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X

- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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- Definition

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.

+ References

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- Definition

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

+ References

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