Supplemental Disclosures of Cash Flow Information - Schedule of Noncash Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Supplemental Cash Flow Elements [Abstract]
Stock-based compensation not involving cash	$ 40,118	$ 30,736	$ 35,650
Commitments for low-income housing interests	35,000	0	136,882
Exchanges of fixed maturity investments	105,595	50,936	147,612
Net unsettled security trades	2,334	3,833	0
Noncash tax credits	$ 0	$ 1,083	$ 1,000