CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 164,198	$ 142,961	$ 499,146	$ 364,865
Unrealized (losses) on available-for-sale securities
Before tax	(178,080)	(193,262)	(177,271)	(565,815)
Tax effect	47,458	51,504	47,243	150,789
Net of tax	(130,622)	(141,758)	(130,028)	(415,026)
Reclassification of net gains on available-for-sale securities included in net income
Before tax	158	12	720	262
Tax effect	(40)	(3)	(192)	(70)
Net of tax	118	9	528	192
Reclassification of amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale
Before tax	31	44	102	130
Tax effect	(8)	(12)	(27)	(35)
Net of tax	23	32	75	95
Net unrealized (losses) on available-for-sale securities	(130,763)	(141,799)	(130,631)	(415,313)
Unrealized (losses) on derivative instruments
Before tax	(43,082)	(76,441)	(114,847)	(34,585)
Tax effect	11,482	20,371	30,607	9,205
Net unrealized (losses) on derivative instruments	(31,600)	(56,070)	(84,240)	(25,380)
Foreign currency adjustment
Before tax	(8,359)	(22,630)	(942)	(28,048)
Tax effect	2,089	4,808	726	5,921
Net foreign currency adjustment	(6,270)	(17,822)	(216)	(22,127)
Total other comprehensive (loss)	(168,633)	(215,691)	(215,087)	(462,820)
Comprehensive income (loss)	$ (4,435)	$ (72,730)	$ 284,059	$ (97,955)