CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
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)	248,449,000	371,353,000
Common stock, shares outstanding (in shares)	248,449,000	272,494,000
Treasury stock, shares at cost (in shares)	0	98,859,000
Fixed income
Fixed income, amortized cost	$ 5,838,145	$ 5,939,483
Short-Term Investments
Fixed income, amortized cost	339,978	121,539
Equity securities
Cost	$ 16,146	$ 16,025