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Income Taxes - Schedule of Changes in Valuation Allowance (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Reconciliation Of Changes In Valuation Allowance [Roll Forward] |  |  |
Balance at beginning of year | $ 2,279 | $ 2,307 | $ 2,121
Increase to allowance | 40 | 113 | 136
Release of allowance | (154) | (94) | (50)
Tax apportionment, tax rate and tax law changes | (110) | 63 | (23)
Foreign currency translation | (90) | (110) | 123
Balance at end of year | $ 1,965 | $ 2,279 | $ 2,307

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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 https://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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