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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	$ 5,041,912	$ 4,727,623	$ 4,796,838	$ 4,498,688
Other comprehensive loss during the period, net of tax, before reclassifications	(181,970)	(211,652)	(241,175)	(463,203)
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	13,360	(4,007)	26,163	478
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	(23)	(32)	(75)	(95)
Net other comprehensive loss during the period, net of tax	(168,633)	(215,691)	(215,087)	(462,820)
Ending balance	5,015,613	4,637,980	5,015,613	4,637,980
Accumulated Unrealized (Losses) Gains on Securities
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(385,925)	(264,790)	(386,057)	8,724
Other comprehensive loss during the period, net of tax, before reclassifications	(130,622)	(141,758)	(130,028)	(415,026)
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	(118)	(9)	(528)	(192)
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	(23)	(32)	(75)	(95)
Net other comprehensive loss during the period, net of tax	(130,763)	(141,799)	(130,631)	(415,313)
Ending balance	(516,688)	(406,589)	(516,688)	(406,589)
Accumulated Unrealized Gains (Losses) on Derivative Instruments
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(45,259)	57,801	7,381	27,111
Other comprehensive loss during the period, net of tax, before reclassifications	(45,078)	(52,072)	(110,931)	(26,050)
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	13,478	(3,998)	26,691	670
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 loss during the period, net of tax	(31,600)	(56,070)	(84,240)	(25,380)
Ending balance	(76,859)	1,731	(76,859)	1,731
Accumulated Foreign Currency Translation Adjustments
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(42,906)	(36,048)	(48,960)	(31,743)
Other comprehensive loss during the period, net of tax, before reclassifications	(6,270)	(17,822)	(216)	(22,127)
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 loss during the period, net of tax	(6,270)	(17,822)	(216)	(22,127)
Ending balance	(49,176)	(53,870)	(49,176)	(53,870)
Accumulated other comprehensive income (loss)
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(474,090)	(243,037)	(427,636)	4,092
Ending balance	$ (642,723)	$ (458,728)	$ (642,723)	$ (458,728)