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Borrowings (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Debt Instrument [Line Items]      
Gain (Loss) on Extinguishment of Debt $ 4 $ 0 $ (20)
Debt, Weighted Average Interest Rate 6.50% 5.10% 3.60%
Parent Company [Member]      
Debt Instrument [Line Items]      
Gain (Loss) on Extinguishment of Debt $ 0 $ 0 $ (20)