Income Taxes NOL & Tax Credit Carryforwards and Undistributed Foreign Earnings (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Deferred Tax Assets, Operating Loss and Tax Credit Carryforwards [Abstract]
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	$ 695
Deferred Tax Assets, Tax Credit Carryforwards	87	$ 93
Deferred Tax Assets, Valuation Allowance	766	832
Undistributed Earnings of Foreign Subsidiaries [Abstract]
Deferred Tax Liabilities, Undistributed Foreign Earnings	65	64
Foreign Tax Authority \| Valuation Allowance, Operating Loss Carryforwards
Deferred Tax Assets, Operating Loss and Tax Credit Carryforwards [Abstract]
Deferred Tax Assets, Valuation Allowance	640
Foreign Tax Authority \| Valuation Allowance, Tax Credit Carryforward
Deferred Tax Assets, Operating Loss and Tax Credit Carryforwards [Abstract]
Deferred Tax Assets, Valuation Allowance	$ 71	$ 86
Foreign Tax Authority \| Minimum
Deferred Tax Assets, Operating Loss and Tax Credit Carryforwards [Abstract]
Operating Loss Carryforwards, Expiration Dates, Period	1 year

Deferred Tax Assets, Operating Loss and Tax Credit Carryforwards [Abstract]

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Operating Loss Carryforwards, Expiration Dates, Period

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Undistributed Earnings of Foreign Subsidiaries [Abstract]

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32621-109319

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32632-109319

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- Definition

Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 8
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-Topic 740
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-Publisher FASB
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-Topic 740
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32621-109319

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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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Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiary and other recognized entity not within country of domicile. Includes, but is not limited to, other basis differences.

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