Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income		$ 662,155	$ 824,858	$ 503,472
Other comprehensive income/(loss), net of tax:
Changes in unrealized gains/(losses) on available-for-sale securities, net of tax	[1],[2]	(177,731)	(19,385)	33,133
Changes in unrealized losses on cash flow hedging instruments, net of tax	[1]	0	0	(651)
Foreign currency translation adjustment, net of tax	[1],[3]	55,053	(3,536)	6,862
Total other comprehensive income/(loss), net of tax	[1]	(122,678)	(22,921)	39,344
Comprehensive income		$ 539,477	$ 801,937	$ 542,816

[1] Net of a tax benefit of $41.3 million, tax benefit of $6.7 million, and tax expense of $11.5 million for the years ended December 31, 2022, 2021, and 2020, respectively.

[2] There were no reclassifications to earnings for the years ended December 31, 2022, 2021, and 2020.

[3] During the year ended December 31, 2022, we closed our derivative instruments used to hedge the foreign exchange risk related to our equity investment in non-U.S. Dollar functional currency foreign subsidiaries, primarily the British Pound and Euro. The cumulative gain recognized on these hedges was $98.3 million (net of $23.3 million in taxes). We expect minimal, if any, of these gains to be reclassified from other comprehensive income into earnings over the next 12 months.