CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Fixed income, amortized cost	$ 5,944,001	$ 6,178,123
Cost	$ 16,286	$ 16,146
Shareholders' equity:
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	219,367,000	248,449,000
Common stock, shares outstanding (in shares)	219,367,000	248,449,000
Fixed income
Fixed income, amortized cost	$ 5,642,929	$ 5,838,145
Short-Term Investments
Fixed income, amortized cost	$ 301,072	$ 339,978