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Income Taxes (Jurisdictional Components of Deferred Tax Assets and Liabilities) (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Income Taxes (Jurisdictional components of deferred taxes)    
Deferred Tax Assets, Gross $ 11 $ 15
Valuation allowances 0 0
Net deferred income tax assets (liabilities) 11 15
U.S. Federal [Member]    
Income Taxes (Jurisdictional components of deferred taxes)    
Operating Loss Carryforwards 1,500  
Deferred Tax Assets, Gross 25 25
Valuation allowances 0 0
Net deferred income tax assets (liabilities) 25 25
State and Local Jurisdiction [Member]    
Income Taxes (Jurisdictional components of deferred taxes)    
Operating Loss Carryforwards 600  
Deferred Tax Assets, Gross 1 1
Valuation allowances 0 0
Net deferred income tax assets (liabilities) 1 1
Foreign Tax Authority [Member]    
Income Taxes (Jurisdictional components of deferred taxes)    
Operating Loss Carryforwards 34  
Deferred Tax Assets, Gross 15 11
Valuation allowances 0 0
Deferred Tax Liabilities, Net (15) $ (11)
Share-based Payment Arrangement [Member]    
Income Taxes (Jurisdictional components of deferred taxes)    
Operating Loss Carryforwards $ 237