Securities - Continuous Unrealized Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	$ 4,490,101	$ 5,932,965
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(408,561)	(106,229)
Available-for-sale debt securities, 12 Months or More, Fair Value	1,542,000	1,778,987
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(228,797)	(66,622)
Available-for-sale debt securities fair value, Total	6,032,101	7,711,952
Available-for-sale debt securities, Gross Unrealized Loss, Total	(637,358)	(172,851)
U.S. Treasury securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	466,095	935,776
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(32,524)	(14,689)
Available-for-sale debt securities, 12 Months or More, Fair Value	158,591	47,881
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(19,110)	(1,998)
Available-for-sale debt securities fair value, Total	624,686	983,657
Available-for-sale debt securities, Gross Unrealized Loss, Total	(51,634)	(16,687)
U.S. government agency and U.S. government-sponsored enterprise debt securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	249,274	773,647
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(35,689)	(18,000)
Available-for-sale debt securities, 12 Months or More, Fair Value	35,971	402,907
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(3,529)	(16,710)
Available-for-sale debt securities fair value, Total	285,245	1,176,554
Available-for-sale debt securities, Gross Unrealized Loss, Total	(39,218)	(34,710)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	440,235	440,734
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(34,101)	(13,589)
Available-for-sale debt securities, 12 Months or More, Fair Value	110,670	257,745
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(16,327)	(15,265)
Available-for-sale debt securities fair value, Total	550,905	698,479
Available-for-sale debt securities, Gross Unrealized Loss, Total	(50,428)	(28,854)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	1,433,558	2,138,542
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(122,567)	(37,691)
Available-for-sale debt securities, 12 Months or More, Fair Value	463,552	330,522
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(64,725)	(11,444)
Available-for-sale debt securities fair value, Total	1,897,110	2,469,064
Available-for-sale debt securities, Gross Unrealized Loss, Total	(187,292)	(49,135)
Municipal securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	265,197	177,065
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(39,708)	(5,682)
Available-for-sale debt securities, 12 Months or More, Fair Value	0	17,003
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	0	(606)
Available-for-sale debt securities fair value, Total	265,197	194,068
Available-for-sale debt securities, Gross Unrealized Loss, Total	(39,708)	(6,288)
Non-agency commercial mortgage-backed securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	335,199	301,925
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(28,436)	(4,158)
Available-for-sale debt securities, 12 Months or More, Fair Value	65,175	40,013
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(11,243)	(1,319)
Available-for-sale debt securities fair value, Total	400,374	341,938
Available-for-sale debt securities, Gross Unrealized Loss, Total	(39,679)	(5,477)
Non-agency residential mortgage-backed securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	616,819	707,792
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(67,098)	(8,966)
Available-for-sale debt securities, 12 Months or More, Fair Value	110,170	6,431
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(13,925)	(11)
Available-for-sale debt securities fair value, Total	726,989	714,223
Available-for-sale debt securities, Gross Unrealized Loss, Total	(81,023)	(8,977)
Corporate debt securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	295,000	183,916
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(35,503)	(3,084)
Available-for-sale debt securities, 12 Months or More, Fair Value	236,189	251,494
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(78,811)	(13,505)
Available-for-sale debt securities fair value, Total	531,189	435,410
Available-for-sale debt securities, Gross Unrealized Loss, Total	(114,314)	(16,589)
Foreign government bonds
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	18,887	27,097
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(165)	(5)
Available-for-sale debt securities, 12 Months or More, Fair Value	67,798	133,279
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(10,604)	(3,476)
Available-for-sale debt securities fair value, Total	86,685	160,376
Available-for-sale debt securities, Gross Unrealized Loss, Total	(10,769)	(3,481)
Asset-backed securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	57,469	24,885
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(1,888)	(301)
Available-for-sale debt securities, 12 Months or More, Fair Value	9,881	0
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(526)	0
Available-for-sale debt securities fair value, Total	67,350	24,885
Available-for-sale debt securities, Gross Unrealized Loss, Total	(2,414)	(301)
Collateralized loan obligations (“CLOs”)
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	312,368	221,586
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(10,882)	(64)
Available-for-sale debt securities, 12 Months or More, Fair Value	284,003	291,712
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(9,997)	(2,288)
Available-for-sale debt securities fair value, Total	596,371	513,298
Available-for-sale debt securities, Gross Unrealized Loss, Total	$ (20,879)	$ (2,352)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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