CONSOLIDATED STATEMENT 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	$ 1,161,161	$ 1,128,083	$ 872,981
Other comprehensive income (loss), net of tax:
Net changes in unrealized gains (losses) on AFS debt securities	81,763	(508,799)	(137,950)
Reclassification of unrealized losses on debt securities transferred from AFS to HTM	0	(112,991)	0
Amortization of unrealized losses on debt securities transferred from ASF to HTM	11,171	12,678	0
Net changes in unrealized gains (losses) on cash flow hedges	52,155	(49,788)	1,487
Foreign currency translation adjustments	(56)	(16,348)	1,757
Other comprehensive income (loss)	145,033	(675,248)	(134,706)
COMPREHENSIVE INCOME	$ 1,306,194	$ 452,835	$ 738,275