CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 258,329	$ 224,742	$ 495,981	$ 429,736
Other comprehensive (loss) income, net of tax:
Net changes in unrealized (losses) gains on AFS debt securities	(192,878)	73,049	(362,148)	(60,399)
Net changes in unrealized gains (losses) on securities transferred from AFS to HTM	3,750	0	(106,930)	0
Net changes in unrealized (losses) gains on cash flow hedges	(6,380)	68	(31,103)	500
Foreign currency translation adjustments	(10,215)	2,234	(10,086)	885
Other comprehensive (loss) income	(205,723)	75,351	(510,267)	(59,014)
COMPREHENSIVE INCOME (LOSS)	$ 52,606	$ 300,093	$ (14,286)	$ 370,722