CONSOLIDATED CONDENSED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Investments:
Fixed maturities, amortized cost	$ 45,338	$ 44,196
Fixed maturities, allowance for credit loss	61	45
Equity securities, cost	1,183	969
Other invested assets, primarily mortgage loans, allowance for credit loss	$ 40	$ 35
Shareholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.10	$ 0.10
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,800,000,000	1,800,000,000
Common stock, shares issued (in shares)	215,115,219	214,912,595
Treasury stock, shares (in shares)	8,165,741	212,251