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v3.24.0.1

Other Borrowed Funds (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Other Borrowed Funds [Line Items] |  |  |  |
Balance |  | $ 8,955,450 | $ 7,138,490 | $ 2,494,428
Average Balance |  | $ 8,763,904 | $ 3,025,223 | $ 5,062,621
Rate |  | 5.06% | 1.95% | 0.56%
Other borrowed funds, Maturities [Abstract] |  |  |  |
2024 |  | $ 8,637,633 |  |
2025 |  | 178,225 |  |
2026 |  | 3,225 |  |
2027 |  | 1,775 |  |
2028 |  | 0 |  |
Thereafter |  | 134,592 |  |
Funds purchased [Member] |  |  |  |
Other Borrowed Funds [Line Items] |  |  |  |
Balance |  | $ 515,747 | $ 99,843 | $ 199,513
Rate |  | 5.17% | 0.05% | 0.05%
Average Balance |  | $ 847,676 | $ 266,344 | $ 543,183
Rate |  | 4.83% | 1.12% | 0.46%
Maximum Outstanding At Any Month End |  | $ 1,711,580 | $ 444,069 | $ 542,465
Repurchase agreements [Member] |  |  |  |
Other Borrowed Funds [Line Items] |  |  |  |
Balance |  | $ 607,001 | $ 2,170,534 | $ 2,126,936
Rate |  | 1.70% | 4.42% | 0.08%
Average Balance |  | $ 1,805,978 | $ 998,701 | $ 1,695,519
Rate |  | 4.32% | 1.02% | 0.33%
Maximum Outstanding At Any Month End |  | $ 4,433,480 | $ 3,034,312 | $ 2,920,728
Other Borrowings [Member] |  |  |  |
Other Borrowed Funds [Line Items] |  |  |  |
Balance |  | 7,701,552 | 4,736,908 | 36,753
Average Balance |  | $ 5,979,095 | $ 1,628,972 | $ 2,599,861
Rate |  | 5.28% | 2.41% | 0.38%
Federal Home Loan Bank advances [Member] |  |  |  |
Other Borrowed Funds [Line Items] |  |  |  |
Balance |  | $ 7,675,000 | $ 4,700,000 | $ 0
Rate |  | 5.51% | 4.48% | 0.00%
Average Balance |  | $ 5,948,863 | $ 1,593,699 | $ 1,679,315
Rate |  | 5.28% | 2.37% | 0.27%
Maximum Outstanding At Any Month End |  | $ 7,875,000 | $ 4,700,000 | $ 2,600,000
GNMA repurchase liability [Member] |  |  |  |
Other Borrowed Funds [Line Items] |  |  |  |
Balance |  | $ 11,660 | $ 10,608 | $ 7,420
Rate |  | 4.13% | 4.06% | 4.36%
Average Balance |  | $ 11,224 | $ 6,692 | $ 11,956
Rate |  | 4.04% | 4.38% | 4.06%
Maximum Outstanding At Any Month End |  | $ 12,414 | $ 11,011 | $ 23,856
Paycheck protection program liquidity facility |  |  |  |
Other Borrowed Funds [Line Items] |  |  |  |
Balance |  |  |  | $ 0
Rate |  |  |  | 0.00%
Average Balance |  |  |  | $ 879,145
Rate |  |  |  | 0.35%
Maximum Outstanding At Any Month End |  |  |  | $ 1,662,598
Other [Member] |  |  |  |
Other Borrowed Funds [Line Items] |  |  |  |
Balance |  | $ 14,892 | $ 26,300 | $ 29,333
Rate |  | 5.50% | 3.20% | 3.23%
Average Balance |  | $ 19,008 | $ 28,581 | $ 29,445
Rate |  | 3.91% | 3.12% | 4.18%
Maximum Outstanding At Any Month End |  | $ 26,311 | $ 30,382 | $ 31,875
Subordinated debentures [Member] |  |  |  |
Other Borrowed Funds [Line Items] |  |  |  |
Balance | [1] | $ 131,150 | $ 131,205 | $ 131,226
Rate | [1] | 6.93% | 6.34% | 3.95%
Average Balance | [1] | $ 131,155 | $ 131,206 | $ 224,058
Rate | [1] | 6.83% | 4.95% | 4.70%
Maximum Outstanding At Any Month End | [1] | $ 131,164 | $ 131,230 | $ 276,049
Subordinated debentures [Member] | Subordinated debentures-acquired, 2015 Issuance [Member] |  |  |  |
Other borrowed funds, Other Disclosures [Abstract] |  |  |  |
Amount of debt issuance |  | $ 60,000 |  |
Maturity date |  | Jun. 25, 2030 |  |
Stated interest rate |  | 5.625% |  |
Interest rate description |  | three-month SOFR plus 0.26% tenor spread adjustment plus 3.17% |  |
Debt Instrument, Call Date, Earliest |  | Jun. 25, 2025 |  |
Subordinated debentures [Member] | Junior subordinated debentures-acquired, 2003 issuance [Member] |  |  |  |
Other borrowed funds, Other Disclosures [Abstract] |  |  |  |
Amount of debt issuance |  | $ 21,000 |  |
Maturity date |  | Sep. 17, 2033 |  |
Interest rate description |  | three-month SOFR plus 0.26% tenor spread adjustment plus 2.95% |  |
Subordinated debentures [Member] | Junior subordinated debentures-acquired, 2004 issuance [Member] |  |  |  |
Other borrowed funds, Other Disclosures [Abstract] |  |  |  |
Amount of debt issuance |  | $ 31,000 |  |
Maturity date |  | Jul. 23, 2034 |  |
Interest rate description |  | three-month SOFR plus 0.26% tenor spread adjustment plus 2.60% |  |
Subordinated debentures [Member] | Junior subordinated debentures-acquired, 2005 issuance [Member] |  |  |  |
Other borrowed funds, Other Disclosures [Abstract] |  |  |  |
Amount of debt issuance |  | $ 20,000 |  |
Maturity date |  | Sep. 30, 2035 |  |
Interest rate description |  | three-month SOFR plus 0.26% tenor spread adjustment plus 1.45% |  |
Subsidiaries [Member] | Funds purchased [Member] |  |  |  |
Other borrowed funds, Other Disclosures [Abstract] |  |  |  |
Number of days to maturity, minimum |  | 1 day |  |
Number of days to maturity, maximum |  | 90 days |  |
Subsidiaries [Member] | Repurchase agreements [Member] |  |  |  |
Other borrowed funds, Other Disclosures [Abstract] |  |  |  |
Number of days to maturity, maximum |  | 90 days |  |
Subsidiaries [Member] | Federal Home Loan Bank advances [Member] |  |  |  |
Other borrowed funds, Other Disclosures [Abstract] |  |  |  |
Federal Home Loan Banks, Letters of credit issued to secure public funds |  | $ 513,000 |  |
Unused credit available pursuant to the FHLB's collateral policies |  | 2,800,000 |  |
Subsidiaries [Member] | BOK Financial Securities, Inc. [Member] | Other [Member] |  |  |  |
Other Borrowed Funds [Line Items] |  |  |  |
Balance |  | $ 0 | $ 0 |
[1] | Parent Company only.

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