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Consolidated Statement of Comprehensive Income - Unaudited - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 237,652	$ 204,994
Other comprehensive (loss) income, net of tax:
Net changes in unrealized losses on AFS debt securities	(169,270)	(133,448)
Net changes in unrealized losses on securities transferred from AFS to HTM	(110,680)	0
Net changes in unrealized (losses) gains on cash flow hedges	(24,723)	432
Foreign currency translation adjustments	129	(1,349)
Other comprehensive loss	(304,544)	(134,365)
COMPREHENSIVE (LOSS) INCOME	$ (66,892)	$ 70,629

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