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Securities - Schedule of Information Regarding Securities with Unrealized Losses (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Securities in an Unrealized Loss Position for Less than 12 Months |  |
Fair Value, AFS and HTM | $ 478,793 | $ 2,023,736
Unrealized Losses, AFS and HTM | 33,147 | 30,297
Securities in an Unrealized Loss Position for More than 12 Months |  |
Fair Value, AFS and HTM | 2,263,197 | 487,570
Unrealized Losses, AFS and HTM | 520,099 | 18,031
Total |  |
Fair Value, AFS and HTM | 2,741,990 | 2,511,306
Unrealized Losses, AFS and HTM | 553,246 | 48,328
US Treasury Securities |  |
Securities in an Unrealized Loss Position for Less than 12 Months |  |
Fair Value, AFS | 168,758 |
Unrealized Losses, AFS | 5,662 |
Securities in an Unrealized Loss Position for More than 12 Months |  |
Fair Value, AFS | 0 |
Unrealized Losses, AFS | 0 |
Total |  |
Fair Value, AFS | 168,758 |
Unrealized Losses, AFS | 5,662 |
Government-sponsored enterprise securities |  |
Securities in an Unrealized Loss Position for Less than 12 Months |  |
Fair Value, AFS | 0 | 21,436
Unrealized Losses, AFS | 0 | 522
Securities in an Unrealized Loss Position for More than 12 Months |  |
Fair Value, AFS | 57,456 | 47,743
Unrealized Losses, AFS | 14,501 | 2,250
Total |  |
Fair Value, AFS | 57,456 | 69,179
Unrealized Losses, AFS | 14,501 | 2,772
Mortgage-backed securities |  |
Securities in an Unrealized Loss Position for Less than 12 Months |  |
Fair Value, AFS and HTM | 221,006 | 1,773,022
Unrealized Losses, AFS and HTM | 18,215 | 25,977
Securities in an Unrealized Loss Position for More than 12 Months |  |
Fair Value, AFS and HTM | 1,835,958 | 404,484
Unrealized Losses, AFS and HTM | 405,557 | 13,857
Total |  |
Fair Value, AFS and HTM | 2,056,964 | 2,177,506
Unrealized Losses, AFS and HTM | 423,772 | 39,834
Corporate bonds |  |
Securities in an Unrealized Loss Position for Less than 12 Months |  |
Fair Value, AFS | 40,644 | 999
Unrealized Losses, AFS | 947 | 1
Securities in an Unrealized Loss Position for More than 12 Months |  |
Fair Value, AFS | 886 | 945
Unrealized Losses, AFS | 114 | 55
Total |  |
Fair Value, AFS | 41,530 | 1,944
Unrealized Losses, AFS | 1,061 | 56
State and local governments |  |
Securities in an Unrealized Loss Position for Less than 12 Months |  |
Fair Value, HTM | 48,385 | 228,279
Unrealized Losses, HTM | 8,323 | 3,797
Securities in an Unrealized Loss Position for More than 12 Months |  |
Fair Value, HTM | 368,897 | 34,398
Unrealized Losses, HTM | 99,927 | 1,869
Total |  |
Fair Value, HTM | 417,282 | 262,677
Unrealized Losses, HTM | $ 108,250 | $ 5,666

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