Income Taxes - Deferred Tax Asset Valuation Allowances (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Valuation Allowance [Line Items]
Other amortizable assets	$ 323	$ 385
Tax credits	526
NOLs - Non-U.S.	92
NOLs - U.S.	22
Other carryforwards	4
Valuation Allowance	(250)	$ (295)
Other amortizable assets
Valuation Allowance [Line Items]
Valuation Allowance	(185)
Tax credits
Valuation Allowance [Line Items]
Valuation Allowance	0
NOLs - Non-U.S.
Valuation Allowance [Line Items]
Valuation Allowance	(45)
NOLs - U.S.
Valuation Allowance [Line Items]
Valuation Allowance	(16)
Other carryforwards
Valuation Allowance [Line Items]
Valuation Allowance	$ (4)

Deferred Tax Assets, Other Amortizable Assets

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

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