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Investments - Accrued Interest Receivable on Fixed Maturities, AFS and Mortgage Loans (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Fixed maturities    
Schedule of Investments [Line Items]    
Interest Receivable $ 338 $ 299
Mortgage loans    
Schedule of Investments [Line Items]    
Interest Receivable $ 18 $ 16