Condensed Consolidated Balance Sheets - (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Fixed maturities securities at amortized cost	$ 42,878	$ 42,414
Marketable securities fixed maturities allowance for credit loss	20	16
Equity securities at cost	681	686
Mortgage loans on real estate commercial and consumer allowance for credit loss	35	35
Allowance for uncollectible reinsurance	22	22
Allowance for uncollectible insurance receivables	26	28
Accumulated depreciation on property and equipment	303	296
Other assets (includes $— and $23 due from Loews Corporation)	2,647	2,534
Other liabilities (includes $29 and $28 due to Loews Corporation)	$ 3,101	$ 2,897
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)	271,279,498	270,881,457
Treasury stock, shares (in shares)	1,760,745	2,158,786
Related Party
Other assets (includes $— and $23 due from Loews Corporation)	$ 0	$ 23
Other liabilities (includes $29 and $28 due to Loews Corporation)	$ 29	$ 28