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Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Income Tax Contingency [Line Items]      
Unrecognized Tax Benefits, Interest on Income Taxes Accrued $ 2 $ 2  
Unrecognized Tax Benefits, Period Increase (Decrease) $ 0 $ 0 $ 0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00% 21.00% 21.00%
Unrecognized Tax Benefits that Would Impact Effective Tax Rate $ 108 $ 107 $ 107
Effective Income Tax Rate Reconciliation, Percent 7.00% 251.00% (157.00%)
Payments for Legal Settlements $ 0 $ 0 $ (3)
Unrecognized Tax Benefits [Roll Forward]      
Beginning balance 107 107  
Additions for current year tax positions 0 1 4
Additions for tax positions of prior years 2 0 0
Reductions for tax positions of prior years 0 (1) (16)
Lapse of statute of limitations (1) 0 0
Ending balance 108 107 107
Unrecognized Tax Benefits, Income Tax Penalties Accrued 0 0  
Unrecognized Tax Benefits, Income Tax Penalties Expense $ 0 $ 0 $ 0
UNITED STATES      
Income Tax Contingency [Line Items]      
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00%    
Unrecognized Tax Benefits that Would Impact Effective Tax Rate $ 34    
Effective Income Tax Rate Reconciliation, Percent 35.00%