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, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	$ 7,225,696	$ 5,536,628	$ 6,344,297	$ 5,399,526
Other comprehensive income (loss) during the period, net of tax, before reclassifications	47,709	204,990	181,670	25,266
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	3,723	15,041	11,880	43,845
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	(7)	(10)	(23)	(57)
Net other comprehensive income (loss) during the period, net of tax	51,425	220,021	193,527	69,054
Ending balance	7,045,757	6,399,714	7,045,757	6,399,714
Total Accumulated Other Comprehensive (Loss) Income
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(366,233)	(512,198)	(508,335)	(361,231)
Ending balance	(314,808)	(292,177)	(314,808)	(292,177)
Accumulated Unrealized (Losses) Gains on Securities
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(369,968)	(424,172)	(429,580)	(350,697)
Other comprehensive income (loss) during the period, net of tax, before reclassifications	55,886	124,478	115,227	51,916
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	(199)	(39)	88	(905)
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	(7)	(10)	(23)	(57)
Net other comprehensive income (loss) during the period, net of tax	55,680	124,429	115,292	50,954
Ending balance	(314,288)	(299,743)	(314,288)	(299,743)
Accumulated Unrealized Gains (Losses) on Derivative Instruments
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	53,920	(36,304)	(11,227)	32,049
Other comprehensive income (loss) during the period, net of tax, before reclassifications	(754)	77,308	56,523	(20,715)
Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax	3,922	15,080	11,792	44,750
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	3,168	92,388	68,315	24,035
Ending balance	57,088	56,084	57,088	56,084
Accumulated Foreign Currency Translation Adjustments
Activity Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(50,185)	(51,722)	(67,528)	(42,583)
Other comprehensive income (loss) during the period, net of tax, before reclassifications	(7,423)	3,204	9,920	(5,935)
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	(7,423)	3,204	9,920	(5,935)
Ending balance	$ (57,608)	$ (48,518)	$ (57,608)	$ (48,518)