Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income before noncontrolling interests	$ 1,031,015	$ 532,985	$ 683,985
Other comprehensive (loss) gain.:
Change in unrealized translation adjustments	(20,969)	29,927	37,166
Change in unrealized investment (losses) gains, net of taxes	(198,812)	140,250	215,902
Other comprehensive (loss) gain	(219,781)	170,177	253,068
Comprehensive income	811,234	703,162	937,053
Comprehensive income to the noncontrolling interest	(8,523)	(2,313)	(2,144)
Comprehensive income to common stockholders	$ 802,711	$ 700,849	$ 934,909