CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 1,165,586	$ 1,161,161	$ 1,128,083
Other comprehensive income (loss), net of tax:
Net changes in unrealized gains (losses) on AFS debt securities	48,845	81,763	(508,799)
Reclassification of unrealized losses on debt securities transferred from AFS to HTM	0	0	(112,991)
Amortization of unrealized losses on debt securities transferred from ASF to HTM	10,884	11,171	12,678
Net changes in unrealized (losses) gains on cash flow hedges	(23,411)	52,155	(49,788)
Foreign currency translation adjustments	(982)	(56)	(16,348)
Other comprehensive income (loss)	35,336	145,033	(675,248)
COMPREHENSIVE INCOME	$ 1,200,922	$ 1,306,194	$ 452,835