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Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023
Cash Flows From Operating Activities: [Abstract] |  |
Net income | $ 387,399 | $ 448,611
Adjustments to reconcile net income to net cash used in operating activities: [Abstract] |  |
Provision for credit losses | 18,000 | 40,000
Change in fair value of mortgage servicing rights due to market assumption changes | 2,023 | (11,241)
Change in the fair value of mortgage servicing rights due to principal payments | 21,508 | 21,031
Net unrealized (gains) losses from derivative contracts | (123,979) | (55,127)
Share-based compensation | 18,379 | 14,273
Depreciation and amortization | 78,408 | 81,002
Net amortization of discounts and premiums | (31,633) | (14,216)
Net losses (gains) on financial instruments and other losses (gains), net | (29,012) | (12,702)
Net loss (gain) on mortgage loans held for sale | (6,508) | 4,306
Mortgage loans originated for sale | (603,963) | (527,136)
Proceeds from sale of mortgage loans held for sale | 572,861 | 527,115
Capitalized mortgage servicing rights | (10,812) | (9,757)
Charitable contributions to BOKF Foundation | 13,610 | 0
Change in trading and fair value option securities | 55,270 | (7,477)
Change in receivables | 219,583 | 14,079
Change in other assets | 97,074 | 74,107
Change in other liabilities | 211,240 | (58,926)
Net cash provided by (used in) operating activities | 889,448 | 527,942
Cash Flows From Investing Activities: [Abstract] |  |
Proceeds from maturities or redemptions of investment securities | 172,086 | 214,869
Proceeds from maturities or redemptions of available-for-sale securities | 1,531,719 | 1,134,602
Purchases of investment securities | 0 | (2,504)
Purchases of available-for-sale securities | (2,807,115) | (1,843,827)
Proceeds from sales of available-for-sale securities | 839,352 | 135,489
Change in amount receivable on unsettled available-for-sale securities transactions | 91,132 | 7,471
Loans originated, net of principal collected | (79,038) | (1,168,401)
Net proceeds from derivative asset contracts | (13,870) | 143,543
Net change in restricted equity securities | 33,764 |
Net change in restricted equity securities |  | (135,461)
Proceeds from disposition of assets | 18,029 | 36,993
Purchases of assets | (124,451) | (128,902)
Net cash provided by (used in) investing activities | (338,392) | (1,606,128)
Cash Flows From Financing Activities: [Abstract] |  |
Net change in demand deposits, transaction deposits and savings accounts | 2,381,483 | (2,293,528)
Net change in time deposits | 825,934 | 1,465,375
Net change in other borrowed funds | (3,363,116) | 1,906,678
Net payments on derivative liability contracts | 14,294 | (153,692)
Net change in derivative margin accounts | 37,060 | 312,397
Change in amount due on unsettled available-for-sale securities transactions | (119,332) | 53,219
Issuance of common and treasury stock, net | (3,700) | (4,695)
Repurchase of common stock | (89,779) | (126,611)
Dividends paid | (106,125) | (107,738)
Net cash provided by (used in) financing activities | (423,281) | 1,051,405
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total | 127,775 | (26,781)
Cash and cash equivalents at beginning of period | 1,348,265 | 1,401,716
Cash and cash equivalents at end of period | 1,476,040 | 1,374,935
Supplemental Cash Flow Information: [Abstract] |  |
Cash paid for interest | 1,097,666 | 706,011
Cash paid for taxes | 67,803 | 156,092
Net loans and bank premises transferred to repossessed real estate and other assets | 440 | 367
Residential mortgage loans guaranteed by U.S. government agencies that became eligible for repurchase during the period | 12,599 | 10,679
Conveyance of other real estate owned guaranteed by U.S. government agencies | 2,912 | 4,007
Right-of-use assets obtained in exchange for operating lease liabilities | $ 20,100 | $ 65,241

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- Definition Represents the non-cash decrease in net pre-tax net income related to the change in fair value of mortgage servicing rights due to loan runoff + References No definition available. + Details
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- Definition Represents the non-cash increase in loans related to the right but not the obligation to repurchases loans previously sold into Ginnie Mae pools based on certain criteria and as such has effectively regained control of the asset and must recognize the loan on the balance sheet. + References No definition available. + Details
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- Definition Represents the combined realized net loss or gain from sale of residential mortgage loans and the change in the unrealized net loss or gain on mortgage loans held for sale during the period. + References No definition available. + Details
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- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-8 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-24 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-4 + Details
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- Definition Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-24 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 1 -SubTopic 230 -Topic 830 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477401/830-230-45-1 + Details
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- Definition Amount of increase (decrease) of investment in debt and equity securities, measured at fair value with changes in fair value recognized in net income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 19 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-19 + Details
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- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 17 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 25 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-25 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-2 + Details
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- Definition The adjustment to the carrying value of the rights retained or purchased to service mortgages. These adjustments are made when the estimate of the fair value is changed. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a)(6) -SubTopic 50 -Topic 860 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481229/860-50-50-4 + Details
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- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-24 + Details
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- Definition The amount of cash paid for the origination of mortgages that are held for sale. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 21 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-21 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 25 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-25 + Details
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- Definition The net cash outflow or inflow for the increase (decrease) in the beginning and end of period of loan and lease balances which are not originated or purchased specifically for resale. Includes cash payments and proceeds associated with (a) loans held-for-investment, (b) leases held-for-investment, and (c) both. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 230 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479024/942-230-45-1 + Details
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