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Deferred Policy Acquisition Costs, Value of Business Acquired and Other Intangibles (Information Regarding DSI) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Variable Annuities    
Deferred Sale Inducement Cost [Line Items]    
Balance, beginning of period $ 220 $ 245
Amortization (6) (7)
Balance, end of period 214 238
Fixed Rate Annuities    
Deferred Sale Inducement Cost [Line Items]    
Balance, beginning of period 8 9
Amortization 0 0
Balance, end of period $ 8 $ 9