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Investment Securities - Schedule of AFS Debt Securities in an Unrealized Loss Position (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months, Fair Value | $ 1,206,152 | $ 2,808,862
Less Than 12 Months, Gross Unrealized Losses | (76,494) | (56,121)
12 Months or Longer, Fair Value | 1,449,762 | 317,559
12 Months or Longer, Gross Unrealized Losses | (252,970) | (10,167)
Total Fair Value | 2,655,914 | 3,126,421
Total Gross Unrealized Losses | (329,464) | (66,288)
Debt Securities Issued by the U.S. Treasury and Government Agencies |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months, Fair Value | 28,574 | 51,455
Less Than 12 Months, Gross Unrealized Losses | (1,118) | (195)
12 Months or Longer, Fair Value | 127,841 | 9,995
12 Months or Longer, Gross Unrealized Losses | (13,949) | (89)
Total Fair Value | 156,415 | 61,450
Total Gross Unrealized Losses | (15,067) | (284)
Debt Securities Issued by States and Political Subdivisions |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months, Fair Value | 11,341 | 643
Less Than 12 Months, Gross Unrealized Losses | (1,240) | (5)
12 Months or Longer, Fair Value | 49,985 |
12 Months or Longer, Gross Unrealized Losses | (11,342) |
Total Fair Value | 61,326 | 643
Total Gross Unrealized Losses | (12,582) | (5)
Debt Securities Issued by Government-Sponsored Enterprises |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months, Fair Value | 47,825 | 814
Less Than 12 Months, Gross Unrealized Losses | (108) | (10)
12 Months or Longer, Fair Value | 803 | 49
12 Months or Longer, Gross Unrealized Losses | (71) | (1)
Total Fair Value | 48,628 | 863
Total Gross Unrealized Losses | (179) | (11)
Debt Securities Issued by Corporations |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months, Fair Value | 438,225 | 249,629
Less Than 12 Months, Gross Unrealized Losses | (7,995) | (2,846)
12 Months or Longer, Fair Value | 284,350 | 64,029
12 Months or Longer, Gross Unrealized Losses | (48,741) | (970)
Total Fair Value | 722,575 | 313,658
Total Gross Unrealized Losses | (56,736) | (3,816)
Residential - Government Agencies |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months, Fair Value | 386,809 | 810,157
Less Than 12 Months, Gross Unrealized Losses | (30,492) | (17,131)
12 Months or Longer, Fair Value | 340,824 | 41,471
12 Months or Longer, Gross Unrealized Losses | (65,723) | (1,635)
Total Fair Value | 727,633 | 851,628
Total Gross Unrealized Losses | (96,215) | (18,766)
Residential - U.S. Government-Sponsored Enterprises |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months, Fair Value | 194,684 | 1,670,500
Less Than 12 Months, Gross Unrealized Losses | (22,294) | (35,711)
12 Months or Longer, Fair Value | 598,986 | 180,205
12 Months or Longer, Gross Unrealized Losses | (103,816) | (6,536)
Total Fair Value | 793,670 | 1,850,705
Total Gross Unrealized Losses | (126,110) | (42,247)
Commercial - Government Agencies - Sponsored Agencies |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months, Fair Value | 98,694 | 25,664
Less Than 12 Months, Gross Unrealized Losses | (13,247) | (223)
12 Months or Longer, Fair Value | 46,973 | 21,810
12 Months or Longer, Gross Unrealized Losses | (9,328) | (936)
Total Fair Value | 145,667 | 47,474
Total Gross Unrealized Losses | (22,575) | (1,159)
Mortgage-Backed Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less Than 12 Months, Fair Value | 680,187 | 2,506,321
Less Than 12 Months, Gross Unrealized Losses | (66,033) | (53,065)
12 Months or Longer, Fair Value | 986,783 | 243,486
12 Months or Longer, Gross Unrealized Losses | (178,867) | (9,107)
Total Fair Value | 1,666,970 | 2,749,807
Total Gross Unrealized Losses | $ (244,900) | $ (62,172)

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
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