CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 185,460	$ 174,097
Other comprehensive income (loss), net of tax:
Change in unrealized investment gains and losses	51,671	(10,392)
Benefit plan adjustments	46	539
Other comprehensive income (loss), net of tax	51,717	(9,853)
Comprehensive income (loss)	$ 237,177	$ 164,244