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Income Tax Expense (Effective Income Tax Rate Reconciliation) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]      
Income tax expense at United States statutory rate $ 220 $ 90 $ 105
Partnership earnings not subject to tax (84) (64) (74)
Non-deductible goodwill 9 0 0
State and local tax, including federal expense 33 10 1
Other (3) 0 (6)
Income tax expense $ 175 $ 36 $ 26