Condensed Consolidated Balance Sheets - (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Fixed maturities securities at amortized cost	$ 41,330	$ 39,952
Marketable securities fixed maturities allowance for credit loss	3	18
Equity securities at cost	989	964
Mortgage loans on real estate commercial and consumer allowance for credit loss	24	16
Allowance for uncollectible reinsurance	21	21
Allowance for uncollectible insurance receivables	28	29
Accumulated depreciation on property and equipment	272	255
Due from related parties	25	0
Due to related parties	$ 19	$ 56
Common stock, par value (in usd per share)	$ 2.50	$ 2.50
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	273,040,243	273,040,243
Common stock, shares outstanding (in shares)	270,887,022	271,363,999
Treasury stock, shares (in shares)	2,153,221	1,676,244