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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	$ 5,536,628	$ 5,041,912	$ 5,399,526	$ 4,796,838
Other comprehensive income (loss) during the period, net of tax, before reclassifications	204,990	(181,970)	25,266	(241,175)
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	15,041	13,360	43,845	26,163
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)	(23)	(57)	(75)
Net other comprehensive income (loss) during the period, net of tax	220,021	(168,633)	69,054	(215,087)
Ending balance	6,399,714	5,015,613	6,399,714	5,015,613
Accumulated Unrealized (Losses) Gains on Securities
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(424,172)	(385,925)	(350,697)	(386,057)
Other comprehensive income (loss) during the period, net of tax, before reclassifications	124,478	(130,622)	51,916	(130,028)
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	(39)	(118)	(905)	(528)
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)	(23)	(57)	(75)
Net other comprehensive income (loss) during the period, net of tax	124,429	(130,763)	50,954	(130,631)
Ending balance	(299,743)	(516,688)	(299,743)	(516,688)
Accumulated Unrealized Gains (Losses) on Derivative Instruments
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(36,304)	(45,259)	32,049	7,381
Other comprehensive income (loss) during the period, net of tax, before reclassifications	77,308	(45,078)	(20,715)	(110,931)
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	15,080	13,478	44,750	26,691
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	92,388	(31,600)	24,035	(84,240)
Ending balance	56,084	(76,859)	56,084	(76,859)
Accumulated Foreign Currency Translation Adjustments
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(51,722)	(42,906)	(42,583)	(48,960)
Other comprehensive income (loss) during the period, net of tax, before reclassifications	3,204	(6,270)	(5,935)	(216)
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	3,204	(6,270)	(5,935)	(216)
Ending balance	(48,518)	(49,176)	(48,518)	(49,176)
Accumulated other comprehensive loss
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(512,198)	(474,090)	(361,231)	(427,636)
Ending balance	$ (292,177)	$ (642,723)	$ (292,177)	$ (642,723)