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		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	$ 5,436,400	$ 5,015,506	$ 5,399,526	$ 4,796,838
Other comprehensive income (loss) during the period, net of tax, before reclassifications	(41,250)	(117,098)	(179,725)	(59,206)
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	14,210	10,464	28,805	12,804
Amount reclassified from accumulated other comprehensive income or loss related to amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale, net of tax	(10)	(20)	(47)	(52)
Net other comprehensive income (loss) during the period, net of tax	(27,050)	(106,654)	(150,967)	(46,454)
Ending balance	5,536,628	5,041,912	5,536,628	5,041,912
Accumulated Unrealized (Losses) Gains on Securities
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(408,002)	(351,995)	(350,697)	(386,057)
Other comprehensive income (loss) during the period, net of tax, before reclassifications	(15,275)	(33,909)	(72,562)	594
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	(885)	(1)	(866)	(410)
Amount reclassified from accumulated other comprehensive income or loss related to amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale, net of tax	(10)	(20)	(47)	(52)
Net other comprehensive income (loss) during the period, net of tax	(16,170)	(33,930)	(73,475)	132
Ending balance	(424,172)	(385,925)	(424,172)	(385,925)
Accumulated Unrealized Gains (Losses) on Derivative Instruments
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(28,329)	32,809	32,049	7,381
Other comprehensive income (loss) during the period, net of tax, before reclassifications	(23,070)	(88,533)	(98,024)	(65,854)
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	15,095	10,465	29,671	13,214
Amount reclassified from accumulated other comprehensive income or loss related to amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale, net of tax	0	0	0	0
Net other comprehensive income (loss) during the period, net of tax	(7,975)	(78,068)	(68,353)	(52,640)
Ending balance	(36,304)	(45,259)	(36,304)	(45,259)
Accumulated Foreign Currency Translation Adjustments
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(48,817)	(48,250)	(42,583)	(48,960)
Other comprehensive income (loss) during the period, net of tax, before reclassifications	(2,905)	5,344	(9,139)	6,054
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	0	0	0	0
Amount reclassified from accumulated other comprehensive income or loss related to amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale, net of tax	0	0	0	0
Net other comprehensive income (loss) during the period, net of tax	(2,905)	5,344	(9,139)	6,054
Ending balance	(51,722)	(42,906)	(51,722)	(42,906)
Accumulated other comprehensive income (loss)
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(485,148)	(367,436)	(361,231)	(427,636)
Ending balance	$ (512,198)	$ (474,090)	$ (512,198)	$ (474,090)