Accumulated Other Comprehensive Income or Loss and Earnings Per Share - Schedule of Components of Other Comprehensive Income or Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	$ 6,344,297	$ 5,399,526
Other comprehensive income (loss) during the period, net of tax, before reclassifications	93,853	(138,475)
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	4,475	14,595
Amount reclassified from accumulated other comprehensive income or loss related to amortization of unrealized losses on investment securities transferred to held-to-maturity from available-for-sale, net of tax	(8)	(37)
Net other comprehensive income (loss) during the period, net of tax	98,320	(123,917)
Ending balance	6,600,537	5,436,400
Total Accumulated Other Comprehensive (Loss) Income
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(508,335)	(361,231)
Ending balance	(410,015)	(485,148)
Accumulated Unrealized (Losses) Gains on Securities
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(429,580)	(350,697)
Other comprehensive income (loss) during the period, net of tax, before reclassifications	55,371	(57,287)
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	223	19
Amount reclassified from accumulated other comprehensive income or loss related to amortization of unrealized losses on investment securities transferred to held-to-maturity from available-for-sale, net of tax	(8)	(37)
Net other comprehensive income (loss) during the period, net of tax	55,586	(57,305)
Ending balance	(373,994)	(408,002)
Accumulated Unrealized Gains (Losses) on Derivative Instruments
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(11,227)	32,049
Other comprehensive income (loss) during the period, net of tax, before reclassifications	38,722	(74,954)
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	4,252	14,576
Amount reclassified from accumulated other comprehensive income or loss related to amortization of unrealized losses on investment securities transferred to held-to-maturity from available-for-sale, net of tax	0	0
Net other comprehensive income (loss) during the period, net of tax	42,974	(60,378)
Ending balance	31,747	(28,329)
Accumulated Foreign Currency Translation Adjustments
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(67,528)	(42,583)
Other comprehensive income (loss) during the period, net of tax, before reclassifications	(240)	(6,234)
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	0	0
Amount reclassified from accumulated other comprehensive income or loss related to amortization of unrealized losses on investment securities transferred to held-to-maturity from available-for-sale, net of tax	0	0
Net other comprehensive income (loss) during the period, net of tax	(240)	(6,234)
Ending balance	$ (67,768)	$ (48,817)