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Asset Impairments - Additional Information (Detail) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) Reporting_Unit	Jun. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)
Indefinite Lived Intangible Assets By Major Class [Line Items]
Decrease in trade percentage			14.00%
Impairment charge on goodwill	$ 0	$ 3,099	$ 3,099
Impairment of intangible assets, indefinite-lived (excluding goodwill)		87
Goodwill	3,236		3,236	$ 6,264
Accumulated goodwill impairment	5,556		5,556
Additions	55		83
Impairment of Intangible Assets, Finite-lived		1,901
Impairment of property, plant and equipment	12	230
Impairment of right-of-use assets		$ 56
Identifiable intangible assets	$ 866		866	3,020
Wellbore Technologies [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Impairment charge on goodwill			1,866
Reporting units reorganized | Reporting_Unit	2
Goodwill	$ 1,157		1,157	3,011
Additions			11
Impairment of property, plant and equipment	5
Wellbore Technologies [Member] | Wellsite Services [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Goodwill	174		174
Completion & Production Solutions [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Impairment charge on goodwill			1,013
Goodwill	1,078		1,078	$ 2,041
Additions			$ 58
Impairment of property, plant and equipment	$ 7

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