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Consolidated Statements of Operations and Comprehensive Income (Parentheticals) (Unaudited) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Income Statement [Abstract]        
Liability for Future Policy Benefit, Remeasurement Loss (Gain) $ 26 $ 25 $ 4 $ 21