Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income before noncontrolling interests	$ 593,030	$ 231,716
Other comprehensive (loss) income:
Change in unrealized currency translation adjustments	56,272	4,050
Change in unrealized investment losses, net of taxes	(423,545)	(90,130)
Other comprehensive loss	(367,273)	(86,080)
Comprehensive income	225,757	145,636
Noncontrolling interests	(2,391)	(2,191)
Comprehensive income to common stockholders	$ 223,366	$ 143,445