Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income before noncontrolling interests	$ 365,314	$ 333,430	$ 1,179,234	$ 984,883
Other comprehensive income (loss):
Change in unrealized currency translation adjustments	49,503	(22,781)	25,160	(7,387)
Change in unrealized investment gains (losses), net of taxes	380,993	(118,365)	297,533	(50,850)
Other comprehensive income (loss)	430,496	(141,146)	322,693	(58,237)
Comprehensive income	795,810	192,284	1,501,927	926,646
Noncontrolling interests	320	156	779	(862)
Comprehensive income to common stockholders	$ 796,130	$ 192,440	$ 1,502,706	$ 925,784