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Asset Impairments - Identified Intangible Assets Identified by Segment (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2019 USD ($)
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	$ 3,020
Impairment	(1,988)
Additions	9
Amortization	(146)
Currency translation adjustments and other	5
Ending Balance	900
Wellbore Technologies [Member]
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	1,735
Impairment	(1,298)
Additions	9
Amortization	(87)
Currency translation adjustments and other	(10)
Ending Balance	349
Completion & Production Solutions [Member]
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	1,005
Impairment	(690)
Amortization	(45)
Currency translation adjustments and other	13
Ending Balance	283
Rig Technologies [Member]
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	280
Amortization	(14)
Currency translation adjustments and other	2
Ending Balance	$ 268

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- Definition

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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- 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

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-Topic 230
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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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