Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income before noncontrolling interests	$ 333,430	$ 230,474	$ 984,883	$ 1,002,970
Other comprehensive loss:
Change in unrealized currency translation adjustments	(22,781)	(40,516)	(7,387)	(27,637)
Change in unrealized investment losses, net of taxes	(118,365)	(315,664)	(50,850)	(1,076,217)
Other comprehensive loss	(141,146)	(356,180)	(58,237)	(1,103,854)
Comprehensive income (loss)	192,284	(125,706)	926,646	(100,884)
Noncontrolling interests	156	(1,595)	(862)	(4,130)
Comprehensive income (loss) to common stockholders	$ 192,440	$ (127,301)	$ 925,784	$ (105,014)