Valuation Allowance Against Deferred Tax Assets (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Allowances at beginning of year	$ 68	$ 61	$ 71
Benefits reserved current year	5	14	4
Benefits recognized current year	(9)	(1)	(11)
Translation difference	(5)	(6)	(4)
Allowances at end of year	$ 59	$ 68	$ 61

Deferred Tax Assets Valuation Allowance Benefits Recognized Current Year

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- Definition

Deferred tax assets valuation allowance benefits reserved current year.

+ References

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- Definition

Deferred tax assets valuation allowances currency translation increase decrease.

+ References

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- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319

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