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F&G Insurance Subsidiary Financial Information and Regulatory Matters (Details) - USD ($)
$ in Millions
9 Months Ended 12 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Insurance [Abstract]    
Decrease in statutory capital and surplus $ (113) $ (152)
Increase to statutory capital for investment carried at net asset value 16 13
Change in statutory capital surplus increase (decrease) 200 200
Statutory capital and surplus $ 121 $ 121