Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions			3 Months Ended						12 Months Ended
		Aug. 31, 2019	Dec. 31, 2019		Sep. 30, 2019	[1]	Dec. 31, 2018		Dec. 31, 2019		Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]
Goodwill impairment			$ 60	[1]	$ 1,370		$ 2,168	[2],[3]	$ 1,430	[4]	$ 2,168	[4]
Goodwill			1,286				2,654	[5]	1,286		2,654	[5]
Trade Names [Member]
Finite Lived Intangible Assets [Line Items]
Impairment of intangible assets		$ 140
Amortization expense of intangible assets, 2020			15						15
Amortization expense of intangible assets, 2021			21						21
MENA [Member]
Finite Lived Intangible Assets [Line Items]
Goodwill			$ 50				46	[5]	$ 50		46	[5]
MENA [Member] | Discount rate [Member]
Finite Lived Intangible Assets [Line Items]
Discount rate			0.340						0.340
MENA [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Fair value of reporting units exceeded			96.00%						96.00%
Technology [Member]
Finite Lived Intangible Assets [Line Items]
Goodwill			$ 1,139				1,146	[5]	$ 1,139		1,146	[5]
Technology [Member] | Discount rate [Member]
Finite Lived Intangible Assets [Line Items]
Discount rate			0.150						0.150
Technology [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Fair value of reporting units exceeded			28.00%						28.00%
EARC [Member]
Finite Lived Intangible Assets [Line Items]
Discount rate on forecasted and terminal discounted future cash flows			(35.50%)
Goodwill impairment			$ 59						$ 319
Goodwill			97				421	[5]	$ 97		421	[5]
EARC [Member] | Process Technologies [Member]
Finite Lived Intangible Assets [Line Items]
Impairment of intangible assets			$ 2
EARC [Member] | Discount rate [Member]
Finite Lived Intangible Assets [Line Items]
Discount rate			0.335						0.335
EARC [Member] | Maximum [Member] | Discount rate [Member]
Finite Lived Intangible Assets [Line Items]
Discount rate			0.355						0.355
NCSA [Member]
Finite Lived Intangible Assets [Line Items]
Goodwill impairment									$ 1,111
Goodwill	[5]						$ 1,041				$ 1,041
NCSA [Member] | Trade Names [Member]
Finite Lived Intangible Assets [Line Items]
Useful Life Range									1 year 9 months 18 days		8 years 8 months 12 days
Impairment of intangible assets			$ 17
NCSA [Member] | Discount rate [Member]
Finite Lived Intangible Assets [Line Items]
Discount rate			0.330						0.330

[1] 2019—represents impairment of goodwill associated with our NCSA and EARC reporting units, resulting from our interim and annual impairment assessment. See Note 9, Goodwill and Other Intangible Assets, for further discussion.

[2] 2018—represents impairment of goodwill associated with our NCSA, EARC, APAC and Technology reporting units, resulting from our annual impairment assessment.

[3] Results in the second, third and fourth quarters of 2018 reflect impacts of the Combination from the Combination Date.

[4] Represents impairment of goodwill associated with our NCSA and EARC reporting units in 2019 and our NCSA, EARC, APAC and Technology reporting units in 2018. See Note 9, Goodwill and Other Intangible Assets, for further discussion. The goodwill impairment values are included within the applicable operating group’s Operating loss.

[5] As of December 31, 2018, we had approximately $2.2 billion of cumulative impairment charges recorded in conjunction with our impairment assessment performed during the fourth quarter of 2018, as previously described in the 2018 Form 10-K.