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Unfunded Loan Commitments (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Credit Loss [Abstract] |  |  |
Contractual obligation | $ 2,000,000 |  |
Allowance [Abstract] |  |  |
Beginning balance | 72,713 | $ 110,044 | $ 2,481
Provisions for unfunded loan commitments | 365,359 | 232,822 | 311,659
Other provision items | 31,162 | 31,502 | 954
Transfer - funded loans | (344,310) | (301,655) | (320,808)
Ending balance | 124,924 | 72,713 | 110,044
Unfunded Commitments |  |  |
Beginning balance | 1,776,976 | 1,673,018 | 1,910,603
Provision/New commitments - net | 6,180,805 | 5,512,841 | 5,070,175
Other provision items | 0 | 0 | 0
Transfer - funded loans | (5,961,973) | (5,408,883) | (5,307,760)
Ending balance | 1,995,808 | 1,776,976 | 1,673,018
Adjustments |  |  |
Allowance [Abstract] |  |  |
Beginning balance |  | 0 | 115,758
Ending balance |  |  | 0
Unfunded Commitments |  |  |
Beginning balance |  | 0 |
Ending balance |  |  | 0
Remaining Adjusted Transition Amounts to be Phased-In |  |  |
Allowance [Abstract] |  |  |
Beginning balance | 72,713 | 110,044 | 118,239
Ending balance |  | 72,713 | 110,044
Unfunded Commitments |  |  |
Beginning balance | $ 1,776,976 | 1,673,018 | 1,910,603
Ending balance |  | $ 1,776,976 | $ 1,673,018

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