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Consolidated Balance Sheets (Parenthetical) - USD ($)
Mar. 31, 2023
Dec. 31, 2022
Statement of Financial Position [Abstract]    
Fixed maturities available-for-sale, amortized cost $ 73,061,000,000 $ 72,991,000,000
Fixed maturities available-for-sale, allowance for credit losses 18,000,000 24,000,000
Mortgage loans on real estate, allowance for credit losses 139,000,000 129,000,000
Reinsurance recoverable, allowance for credit loss $ 7,000,000 $ 10,000,000
Preferred stock par value (in dollars per share) $ 1 $ 1
Preferred stock, liquidation preference $ 25,000 $ 25,000
Common stock par value (in dollars per share) $ 0.01 $ 0.01
Common stock authorized (in shares) 2,000,000,000 2,000,000,000
Common stock issued (in shares) 505,641,286 508,418,442
Common stock outstanding (in shares) 359,089,998 365,081,940
Treasury stock (in shares) 146,569,130 143,336,502