Consolidated Balance Sheets - (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Fixed maturities securities at amortized cost	$ 41,032	$ 39,952
Marketable securities fixed maturities allowance for credit loss	1	18
Equity securities at cost	703	964
Mortgage loans on real estate commercial and consumer allowance for credit loss	24	16
Allowance for uncollectible reinsurance	22	21
Allowance for uncollectible insurance receivables	29	29
Accumulated depreciation on property and equipment	280	255
Due to related parties	$ 26	$ 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)	270,895,902	271,363,999
Treasury stock, shares (in shares)	2,144,341	1,676,244