Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income before noncontrolling interests	$ 1,383,846	$ 1,384,954	$ 1,031,015
Other comprehensive gain (loss):
Change in unrealized translation adjustments	32,192	1,179	(20,969)
Change in unrealized investment gains (losses), net of taxes	306,553	(983,803)	(198,812)
Other comprehensive gain (loss)	338,745	(982,624)	(219,781)
Comprehensive income	1,722,591	402,330	811,234
Noncontrolling interests	(2,485)	(3,890)	(8,523)
Comprehensive income to common stockholders	$ 1,720,106	$ 398,440	$ 802,711