Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income		$ 522,536	$ 662,155	$ 824,858
Other comprehensive income/(loss), net of tax:
Changes in unrealized gains/(losses) on available-for-sale securities, net of tax	[1],[2]	38,180	(177,731)	(19,385)
Foreign currency translation adjustment, net of tax	[1],[3]	5,454	55,053	(3,536)
Total other comprehensive income/(loss), net of tax	[1]	43,634	(122,678)	(22,921)
Comprehensive income		$ 566,170	$ 539,477	$ 801,937

[1] Net of a tax expense of $15.4 million, tax benefit of $41.3 million, and tax benefit of $6.7 million for the years ended December 31, 2023, 2022, and 2021, respectively.

[2] Net of reclassifications to earnings of realized losses of $5.6 million for the year ended December 31, 2023. There were no reclassifications to earnings for the years ended December 31, 2022 and 2021.

[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 net gain recorded on these hedges was $75.0 million, which included $23.3 million in tax expense.