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Income Taxes - Components of the Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
U.S. State:
Current		$ 1	$ 1
U.S. State, Total		1	1
Foreign:
Current	$ 1	5	6
Deferred	(4)	(2)	(1)
Foreign, Total	(3)	3	5
Income tax provision (benefit)	$ (3)	$ 4	$ 6

X

- Definition

Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.

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