$BOKF
BOK FINANCIAL CORP Stock $bokf

$bokf Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000087535724000008 Filed on February 21, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$645.2M		$2.342B
YoY Change	24.86%		68.27%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development	$45.56M		$181.4M
YoY Change	1.7%		9.32%
% of Gross Profit
Depreciation & Amortization	$26.39M	$28.89M	$68.70M
YoY Change	-1.83%	5.65%	0.44%
% of Gross Profit
Operating Expenses	$45.56M		$181.4M
YoY Change	1.7%		9.32%
Operating Profit
YoY Change
Interest Expense	$351.6M		$1.070B
YoY Change	113.92%		492.23%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$106.9M	$111.5M	$683.2M
YoY Change	-48.71%	-48.45%	3.5%
Income Tax	$23.20M	$28.95M	$152.1M
% Of Pretax Income	21.7%	25.97%	22.26%
Net Earnings	$83.70M	$81.88M	$530.7M
YoY Change	-48.45%	-51.02%	2.01%
Net Earnings / Revenue	12.97%		22.66%
Basic Earnings Per Share	$1.29		$8.02
Diluted Earnings Per Share	$1.29	$1.27	$8.02
COMMON SHARES
Basic Shares Outstanding	65.06M shares		65.65M shares
Diluted Shares Outstanding	64.29M shares		65.65M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$1.156B	$1.348B
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$628.1M	$622.2M	$622.2M
YoY Change	0.79%	10.09%	10.09%
Goodwill	$1.045B	$1.045B
YoY Change	0.0%	0.0%
Intangibles	$56.89M	$59.98M
YoY Change	-21.73%	-21.22%
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$50.16B	$49.82B	$49.82B
YoY Change	10.18%	4.26%	4.26%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$318.6M	$339.0M	$339.0M
YoY Change	18.69%	14.19%	14.19%
Accrued Expenses			$256.3M
YoY Change			20.87%
Deferred Revenue
YoY Change
Short-Term Debt	$1.262B	$1.123B	$1.123B
YoY Change	-21.14%	-50.55%	-50.55%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.580B	$1.462B	$1.718B
YoY Change	-15.42%	392.39%	237.59%
LONG-TERM LIABILITIES
Long-Term Debt	$155.8M	$157.7M	$157.7M
YoY Change	-6.72%	-6.19%	-6.19%
Other Long-Term Liabilities	$1.209B	$1.365B	$1.109B
YoY Change	-9.09%	15.0%	13.72%
Total Long-Term Liabilities	$1.365B	$1.523B	$1.267B
YoY Change	-8.82%	12.37%	10.79%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.580B	$1.462B	$1.718B
Total Long-Term Liabilities	$1.365B	$1.523B	$1.267B
Total Liabilities	$45.03B	$44.68B	$44.68B
YoY Change	10.78%	3.66%	3.65%
SHAREHOLDERS EQUITY
Retained Earnings	$5.260B	$5.212B
YoY Change	6.25%	8.03%
Common Stock	$1.411B	$1.407B
YoY Change	1.02%	1.18%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$932.1M	$876.7M
YoY Change	25.29%	26.15%
Treasury Stock Shares
Shareholders Equity	$5.129B	$5.142B	$5.142B
YoY Change
Total Liabilities & Shareholders Equity	$50.16B	$49.82B	$49.82B
YoY Change	10.18%	4.26%	4.26%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$83.70M	$81.88M	$530.7M
YoY Change	-48.45%	-51.02%	2.01%
Depreciation, Depletion And Amortization	$26.39M	$28.89M	$68.70M
YoY Change	-1.83%	5.65%	0.44%
Cash From Operating Activities	$179.2M	-$461.7M	$66.18M
YoY Change	-92.73%	-79.22%	-98.71%
INVESTING ACTIVITIES
Capital Expenditures	$40.91M	$37.02M	$165.9M
YoY Change	-30.32%	-41.91%	-22.85%
Acquisitions
YoY Change
Other Investing Activities	-$556.0M	-$148.1M	-$1.625B
YoY Change	118.43%	-93.31%	-62.96%
Cash From Investing Activities	-$596.9M	-$185.2M	-$1.791B
YoY Change	90.55%	-91.87%	-61.09%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$181.8M
YoY Change			13.75%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$225.2M	620.2M	$1.672B
YoY Change	-110.29%	-85.55%	-185.52%
NET CHANGE
Cash From Operating Activities	$179.2M	-461.7M	$66.18M
Cash From Investing Activities	-$596.9M	-185.2M	-$1.791B
Cash From Financing Activities	$225.2M	620.2M	$1.672B
Net Change In Cash	-$192.5M	-26.65M	-$53.45M
YoY Change	410.22%	-87.14%	-96.28%
FREE CASH FLOW
Cash From Operating Activities	$179.2M	-$461.7M	$66.18M
Capital Expenditures	$40.91M	$37.02M	$165.9M
Free Cash Flow	$138.3M	-$498.7M	-$99.74M
YoY Change	-94.25%	-78.18%	-102.03%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	36921000	usd
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0000875357
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#PropertyPlantAndEquipmentNet
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#PropertyPlantAndEquipmentNet
CY2023Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilities
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-12-31
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	001-37811
CY2023	dei	Entity Registrant Name EntityRegistrantName	BOK FINANCIAL CORP
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	OK
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	73-1373454
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	Boston Avenue at Second Street
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Tulsa,
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	OK
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	74172
CY2023	dei	City Area Code CityAreaCode	918
CY2023	dei	Local Phone Number LocalPhoneNumber	588-6000
CY2023	dei	Security12b Title Security12bTitle	Common Stock, par value $0.00006 per share
CY2023	dei	Trading Symbol TradingSymbol	BOKF
CY2023	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	2300000000	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	65064299	shares
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.02
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.02
CY2023	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	46000000	usd
CY2022	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	30000000	usd
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	387000	usd
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	20000	usd
CY2023	dei	Auditor Firm AuditorFirmId	42
CY2023	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2023	dei	Auditor Location AuditorLocation	Tulsa, Oklahoma
CY2023	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	1630620000	usd
CY2022	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	976653000	usd
CY2021	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	769357000	usd
CY2023	us-gaap	Interest And Fee Income Loans Held For Sale Mortgages InterestAndFeeIncomeLoansHeldForSaleMortgages	4341000	usd
CY2022	us-gaap	Interest And Fee Income Loans Held For Sale Mortgages InterestAndFeeIncomeLoansHeldForSaleMortgages	6027000	usd
CY2021	us-gaap	Interest And Fee Income Loans Held For Sale Mortgages InterestAndFeeIncomeLoansHeldForSaleMortgages	5465000	usd
CY2023	us-gaap	Interest Income Debt Securities Trading Operating InterestIncomeDebtSecuritiesTradingOperating	215994000	usd
CY2022	us-gaap	Interest Income Debt Securities Trading Operating InterestIncomeDebtSecuritiesTradingOperating	115048000	usd
CY2021	us-gaap	Interest Income Debt Securities Trading Operating InterestIncomeDebtSecuritiesTradingOperating	155989000	usd
CY2023	us-gaap	Interest And Dividend Income Securities Held To Maturity InterestAndDividendIncomeSecuritiesHeldToMaturity	33822000	usd
CY2022	us-gaap	Interest And Dividend Income Securities Held To Maturity InterestAndDividendIncomeSecuritiesHeldToMaturity	24072000	usd
CY2021	us-gaap	Interest And Dividend Income Securities Held To Maturity InterestAndDividendIncomeSecuritiesHeldToMaturity	10430000	usd
CY2023	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	387891000	usd
CY2022	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	248323000	usd
CY2021	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	230383000	usd
CY2022	bokf	Interest Revenue On Fair Value Option Securities InterestRevenueOnFairValueOptionSecurities	2145000	usd
CY2021	bokf	Interest Revenue On Fair Value Option Securities InterestRevenueOnFairValueOptionSecurities	1542000	usd
CY2023	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	29683000	usd
CY2022	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	8282000	usd
CY2021	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	5703000	usd
CY2023	us-gaap	Interest Expense Deposits InterestExpenseDeposits	626597000	usd
CY2023	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	434735000	usd
CY2022	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	52483000	usd
CY2023	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	8952000	usd
CY2022	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	6490000	usd
CY2021	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	10535000	usd
CY2023	us-gaap	Interest Expense InterestExpense	1070284000	usd
CY2022	us-gaap	Interest Expense InterestExpense	180722000	usd
CY2021	us-gaap	Interest Expense InterestExpense	61896000	usd
CY2023	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1272180000	usd
CY2022	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1211380000	usd
CY2021	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1118033000	usd
CY2023	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	46000000	usd
CY2022	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	30000000	usd
CY2021	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-100000000	usd
CY2023	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	1226180000	usd
CY2022	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	1181380000	usd
CY2021	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	1218033000	usd
CY2023	bokf	Total Fees And Commissions TotalFeesAndCommissions	781118000	usd
CY2022	bokf	Total Fees And Commissions TotalFeesAndCommissions	657213000	usd
CY2021	bokf	Total Fees And Commissions TotalFeesAndCommissions	668309000	usd
CY2023	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	56795000	usd
CY2022	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	123000	usd
CY2021	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	63742000	usd
CY2023	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-9921000	usd
CY2022	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-73011000	usd
CY2021	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-19378000	usd
CY2023	bokf	Gain On Fair Value Option Securities Net GainOnFairValueOptionSecuritiesNet	-4292000	usd
CY2022	bokf	Gain On Fair Value Option Securities Net GainOnFairValueOptionSecuritiesNet	-20358000	usd
CY2021	bokf	Gain On Fair Value Option Securities Net GainOnFairValueOptionSecuritiesNet	-2239000	usd
CY2023	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	3115000	usd
CY2022	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	-80261000	usd
CY2021	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	-41637000	usd
CY2023	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-30636000	usd
CY2022	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-971000	usd
CY2021	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	3704000	usd
CY2023	us-gaap	Noninterest Income NoninterestIncome	789949000	usd
CY2022	us-gaap	Noninterest Income NoninterestIncome	643257000	usd
CY2021	us-gaap	Noninterest Income NoninterestIncome	755775000	usd
CY2023	us-gaap	Labor And Related Expense LaborAndRelatedExpense	766610000	usd
CY2022	us-gaap	Labor And Related Expense LaborAndRelatedExpense	670918000	usd
CY2021	us-gaap	Labor And Related Expense LaborAndRelatedExpense	695382000	usd
CY2023	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	31796000	usd
CY2022	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	26435000	usd
CY2021	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	16289000	usd
CY2023	bokf	Contributions To Bokf Foundation ContributionsToBokfFoundation	2707000	usd
CY2022	bokf	Contributions To Bokf Foundation ContributionsToBokfFoundation	2500000	usd
CY2021	bokf	Contributions To Bokf Foundation ContributionsToBokfFoundation	9000000	usd
CY2023	us-gaap	Professional Fees ProfessionalFees	55337000	usd
CY2022	us-gaap	Professional Fees ProfessionalFees	56342000	usd
CY2021	us-gaap	Professional Fees ProfessionalFees	50906000	usd
CY2023	us-gaap	Occupancy Net OccupancyNet	121502000	usd
CY2022	us-gaap	Occupancy Net OccupancyNet	116867000	usd
CY2021	us-gaap	Occupancy Net OccupancyNet	108587000	usd
CY2023	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	30780000	usd
CY2022	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	17994000	usd
CY2021	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	15881000	usd
CY2023	bokf	Federal Deposit Insurance Corporation Fdic Special Assessment Assessed In Fourth Quarter Of2023. FederalDepositInsuranceCorporationFDICSpecialAssessmentAssessedInFourthQuarterOf2023.	43773000	usd
CY2022	bokf	Federal Deposit Insurance Corporation Fdic Special Assessment Assessed In Fourth Quarter Of2023. FederalDepositInsuranceCorporationFDICSpecialAssessmentAssessedInFourthQuarterOf2023.	0	usd
CY2021	bokf	Federal Deposit Insurance Corporation Fdic Special Assessment Assessed In Fourth Quarter Of2023. FederalDepositInsuranceCorporationFDICSpecialAssessmentAssessedInFourthQuarterOf2023.	0	usd
CY2023	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	181365000	usd
CY2022	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	165907000	usd
CY2021	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	151614000	usd
CY2023	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	15225000	usd
CY2022	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	15857000	usd
CY2021	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	14218000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	13882000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	15692000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	18311000	usd
CY2023	bokf	Mortgage Banking Costs MortgageBankingCosts	30524000	usd
CY2022	bokf	Mortgage Banking Costs MortgageBankingCosts	35834000	usd
CY2021	bokf	Mortgage Banking Costs MortgageBankingCosts	42698000	usd
CY2023	us-gaap	Other Noninterest Expense OtherNoninterestExpense	39380000	usd
CY2022	us-gaap	Other Noninterest Expense OtherNoninterestExpense	40134000	usd
CY2021	us-gaap	Other Noninterest Expense OtherNoninterestExpense	54822000	usd
CY2023	us-gaap	Noninterest Expense NoninterestExpense	1332881000	usd
CY2022	us-gaap	Noninterest Expense NoninterestExpense	1164480000	usd
CY2021	us-gaap	Noninterest Expense NoninterestExpense	1177708000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	683248000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	660157000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	796100000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	152115000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	139864000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	179775000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	531133000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	520293000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	616325000	usd
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	387000	usd
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	20000	usd
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-1796000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	530746000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	520273000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	618121000	usd
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.02
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.68
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.95
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.02
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.68
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.95
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	65651569	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	67212728	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	68591920	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65651569	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	67212735	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	68594322	shares
CY2023	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.17
CY2022	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.13
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.09
CY2023	us-gaap	Profit Loss ProfitLoss	531133000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	520293000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	616325000	usd
CY2023	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	218293000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-1227414000	usd
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-341369000	usd
CY2023	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Before Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax	-60394000	usd
CY2022	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Before Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax	-42514000	usd
CY2021	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Before Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax	0	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	0	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	3483000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	0	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-30636000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-971000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	3704000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	309323000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-1187412000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-345073000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	71468000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-278086000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-81576000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	237855000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-909326000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-263497000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	768988000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-389033000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	352828000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	387000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	20000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-1796000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	768601000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-389053000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	354624000	usd
CY2023Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	947613000	usd
CY2022Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	943810000	usd
CY2023Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	400652000	usd
CY2022Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	457906000	usd
CY2023Q4	us-gaap	Trading Securities TradingSecurities	5193505000	usd
CY2022Q4	us-gaap	Trading Securities TradingSecurities	4464161000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	2072586000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	2346768000	usd
CY2023Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	2244153000	usd
CY2022Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	2513687000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	12286681000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	11493860000	usd
CY2023Q4	bokf	Fair Value Option Securities FairValueOptionSecurities	20671000	usd
CY2022Q4	bokf	Fair Value Option Securities FairValueOptionSecurities	296590000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	423099000	usd
CY2022Q4	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	299651000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	56935000	usd
CY2022Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	75272000	usd
CY2023Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	23904968000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	22557150000	usd
CY2023Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	277123000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	235704000	usd
CY2023Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	23627845000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	22321446000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	622223000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	565175000	usd
CY2023Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	317922000	usd
CY2022Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	273815000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	1044749000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	1044749000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	59979000	usd
CY2022Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	76131000	usd
CY2023Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	293884000	usd
CY2022Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	277608000	usd
CY2023Q4	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	5355000	usd
CY2022Q4	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	10115000	usd
CY2023Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	2875000	usd
CY2022Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	14304000	usd
CY2023Q4	us-gaap	Derivative Assets DerivativeAssets	410304000	usd
CY2022Q4	us-gaap	Derivative Assets DerivativeAssets	880343000	usd
CY2023Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	409548000	usd
CY2022Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	406751000	usd
CY2023Q4	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	391910000	usd
CY2022Q4	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	31004000	usd
CY2023Q4	us-gaap	Other Assets OtherAssets	1070282000	usd
CY2022Q4	us-gaap	Other Assets OtherAssets	1354379000	usd
CY2023Q4	us-gaap	Assets Assets	49824830000	usd
CY2022Q4	us-gaap	Assets Assets	47790642000	usd
CY2023Q4	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	9196493000	usd
CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	13395337000	usd
CY2023Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	20964101000	usd
CY2022Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	18659115000	usd
CY2023Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	847085000	usd
CY2022Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	964411000	usd
CY2023Q4	us-gaap	Time Deposits TimeDeposits	3012022000	usd
CY2022Q4	us-gaap	Time Deposits TimeDeposits	1461842000	usd
CY2023Q4	us-gaap	Deposits Deposits	34019701000	usd
CY2022Q4	us-gaap	Deposits Deposits	34480705000	usd
CY2023Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	1122748000	usd
CY2022Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	2270377000	usd
CY2023Q4	us-gaap	Other Borrowings OtherBorrowings	7701552000	usd
CY2022Q4	us-gaap	Other Borrowings OtherBorrowings	4736908000	usd
CY2023Q4	us-gaap	Subordinated Debt SubordinatedDebt	131150000	usd
CY2022Q4	us-gaap	Subordinated Debt SubordinatedDebt	131205000	usd
CY2023Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	338996000	usd
CY2022Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	296870000	usd
CY2023Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	587473000	usd
CY2022Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	554900000	usd
CY2023Q4	srt	Payables To Broker Dealers And Clearing Organizations PayablesToBrokerDealersAndClearingOrganizations	254057000	usd
CY2022Q4	srt	Payables To Broker Dealers And Clearing Organizations PayablesToBrokerDealersAndClearingOrganizations	147470000	usd
CY2023Q4	us-gaap	Other Liabilities OtherLiabilities	523734000	usd
CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	484849000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	44679411000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	43103284000	usd
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.00006
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.00006
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2500000000	shares
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2500000000	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	76593292	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	76593292	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	76423345	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	76423345	shares
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	5000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	5000	usd
CY2023Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1406745000	usd
CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1390395000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5211512000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4824164000	usd
CY2023Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	11626115	shares
CY2022Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	9464711	shares
CY2023Q4	us-gaap	Treasury Stock Value TreasuryStockValue	876720000	usd
CY2022Q4	us-gaap	Treasury Stock Value TreasuryStockValue	694960000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-599100000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-836955000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	5142442000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	4682649000	usd
CY2023Q4	us-gaap	Minority Interest MinorityInterest	2977000	usd
CY2022Q4	us-gaap	Minority Interest MinorityInterest	4709000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5145419000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4687358000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	49824830000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	47790642000	usd
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5291561000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-263497000	usd
CY2021	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	117938000	usd
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised Net Of Tax Benefit Expense StockIssuedDuringPeriodValueStockOptionsExercisedNetOfTaxBenefitExpense	973000	usd
CY2021	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	5847000	usd
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9759000	usd
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	144105000	usd
CY2021	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	18860000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	520293000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-909326000	usd
CY2022	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	154887000	usd
CY2022	us-gaap	Stock Issued During Period Value Stock Options Exercised Net Of Tax Benefit Expense StockIssuedDuringPeriodValueStockOptionsExercisedNetOfTaxBenefitExpense	37000	usd
CY2022	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	4944000	usd
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11564000	usd
CY2022	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	143800000	usd
CY2022	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	50000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4687358000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4687358000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	531133000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	237855000	usd
CY2023	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	176819000	usd
CY2023	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	4941000	usd
CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	16350000	usd
CY2023	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	143398000	usd
CY2023	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	2119000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5145419000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	531133000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	520293000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	616325000	usd
CY2023	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	46000000	usd
CY2022	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	30000000	usd
CY2021	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-100000000	usd
CY2023	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	3115000	usd
CY2022	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	-80261000	usd
CY2021	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	-41637000	usd
CY2023	bokf	Changeinfairvalueofmortgageservicingrightsduetoloanrunoff Changeinfairvalueofmortgageservicingrightsduetoloanrunoff	27343000	usd
CY2022	bokf	Changeinfairvalueofmortgageservicingrightsduetoloanrunoff Changeinfairvalueofmortgageservicingrightsduetoloanrunoff	31741000	usd
CY2021	bokf	Changeinfairvalueofmortgageservicingrightsduetoloanrunoff Changeinfairvalueofmortgageservicingrightsduetoloanrunoff	38761000	usd
CY2023	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-133118000	usd
CY2022	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	52214000	usd
CY2021	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-30201000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	16350000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	11564000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	9759000	usd
CY2023	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	109893000	usd
CY2022	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	107563000	usd
CY2021	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	102468000	usd
CY2023	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	19985000	usd
CY2022	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-9215000	usd
CY2021	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-18293000	usd
CY2023	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	26162000	usd
CY2022	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-846000	usd
CY2021	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	67446000	usd
CY2023	bokf	Netgainonmortgageloansheldforsale Netgainonmortgageloansheldforsale	-4483000	usd
CY2022	bokf	Netgainonmortgageloansheldforsale Netgainonmortgageloansheldforsale	2948000	usd
CY2021	bokf	Netgainonmortgageloansheldforsale Netgainonmortgageloansheldforsale	70464000	usd
CY2023	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	666391000	usd
CY2022	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	1180403000	usd
CY2021	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	2818789000	usd
CY2023	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	679389000	usd
CY2022	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	1295588000	usd
CY2021	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	2939522000	usd
CY2023	bokf	Capitalizedmortgageservicingrights Capitalizedmortgageservicingrights	12141000	usd
CY2022	bokf	Capitalizedmortgageservicingrights Capitalizedmortgageservicingrights	18215000	usd
CY2021	bokf	Capitalizedmortgageservicingrights Capitalizedmortgageservicingrights	31132000	usd
CY2023	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	453340000	usd
CY2022	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-4419761000	usd
CY2021	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	4357950000	usd
CY2023	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	316819000	usd
CY2022	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	34301000	usd
CY2021	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-39183000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-89930000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-13205000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	12568000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-79733000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	50836000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	12897000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	66183000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	5122270000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-3692577000	usd
CY2023	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	268263000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	157796000	usd
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	33865000	usd
CY2023	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1558160000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2192200000	usd
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	3500081000	usd
CY2023	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	2504000	usd
CY2022	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	10000000	usd
CY2021	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	0	usd
CY2023	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2951422000	usd
CY2022	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	4533892000	usd
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	4607199000	usd
CY2023	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	834704000	usd
CY2022	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	307481000	usd
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	622881000	usd
CY2023	bokf	Change In Amount Receivable On Unsettled Security Transactions ChangeInAmountReceivableOnUnsettledSecurityTransactions	-86110000	usd
CY2022	bokf	Change In Amount Receivable On Unsettled Security Transactions ChangeInAmountReceivableOnUnsettledSecurityTransactions	9629000	usd
CY2021	bokf	Change In Amount Receivable On Unsettled Security Transactions ChangeInAmountReceivableOnUnsettledSecurityTransactions	-10406000	usd
CY2023	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	1349900000	usd
CY2022	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	2348586000	usd
CY2021	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-2853326000	usd
CY2023	us-gaap	Payments For Proceeds From Derivative Instrument Investing Activities PaymentsForProceedsFromDerivativeInstrumentInvestingActivities	-154602000	usd
CY2022	us-gaap	Payments For Proceeds From Derivative Instrument Investing Activities PaymentsForProceedsFromDerivativeInstrumentInvestingActivities	7099000	usd
CY2021	us-gaap	Payments For Proceeds From Derivative Instrument Investing Activities PaymentsForProceedsFromDerivativeInstrumentInvestingActivities	-161093000	usd
CY2023	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	32601000	usd
CY2022	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	usd
CY2021	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	usd
CY2023	us-gaap	Payments To Acquire Restricted Investments PaymentsToAcquireRestrictedInvestments	123448000	usd
CY2022	us-gaap	Payments To Acquire Restricted Investments PaymentsToAcquireRestrictedInvestments	216538000	usd
CY2021	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	88278000	usd
CY2023	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	39708000	usd
CY2022	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	60769000	usd
CY2021	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	165040000	usd
CY2023	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	165918000	usd
CY2022	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	215046000	usd
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	204287000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1791264000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4603286000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	2602672000	usd
CY2023	bokf	Net Change In Demand Deposits Transaction Deposits And Savings Accounts NetChangeInDemandDepositsTransactionDepositsAndSavingsAccounts	-2011184000	usd
CY2022	bokf	Net Change In Demand Deposits Transaction Deposits And Savings Accounts NetChangeInDemandDepositsTransactionDepositsAndSavingsAccounts	-6518868000	usd
CY2021	bokf	Net Change In Demand Deposits Transaction Deposits And Savings Accounts NetChangeInDemandDepositsTransactionDepositsAndSavingsAccounts	5360979000	usd
CY2023	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	1550180000	usd
CY2022	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-242486000	usd
CY2021	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-262800000	usd
CY2023	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	1802549000	usd
CY2022	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	4609824000	usd
CY2021	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-1269241000	usd
CY2023	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	0	usd
CY2022	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	0	usd
CY2021	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	150000000	usd
CY2023	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	190085000	usd
CY2022	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-17782000	usd
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-117452000	usd
CY2023	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-4941000	usd
CY2022	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-4907000	usd
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-4874000	usd
CY2023	bokf	Net Change In Derivative Margin Accounts NetChangeInDerivativeMarginAccounts	631433000	usd
CY2022	bokf	Net Change In Derivative Margin Accounts NetChangeInDerivativeMarginAccounts	519797000	usd
CY2021	bokf	Net Change In Derivative Margin Accounts NetChangeInDerivativeMarginAccounts	-467865000	usd
CY2023	us-gaap	Payments For Proceeds From Derivative Instrument Financing Activities PaymentsForProceedsFromDerivativeInstrumentFinancingActivities	166275000	usd
CY2022	us-gaap	Payments For Proceeds From Derivative Instrument Financing Activities PaymentsForProceedsFromDerivativeInstrumentFinancingActivities	1569000	usd
CY2021	us-gaap	Payments For Proceeds From Derivative Instrument Financing Activities PaymentsForProceedsFromDerivativeInstrumentFinancingActivities	79962000	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	176819000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	154887000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	117938000	usd
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	143398000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	143800000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	144105000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1671630000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1954678000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2746742000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-53451000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1435694000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1656837000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1401716000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2837410000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1180573000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1348265000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1401716000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2837410000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	1044950000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	176081000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	68775000	usd
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	173916000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	79532000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	135331000	usd
CY2023	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	787000	usd
CY2022	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	12326000	usd
CY2021	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	8320000	usd
CY2023	bokf	Transfer Of Available For Sale Securities To Investment Securities Fair Value TransferOfAvailableForSaleSecuritiesToInvestmentSecuritiesFairValue	0	usd
CY2022	bokf	Transfer Of Available For Sale Securities To Investment Securities Fair Value TransferOfAvailableForSaleSecuritiesToInvestmentSecuritiesFairValue	2454273000	usd
CY2021	bokf	Transfer Of Available For Sale Securities To Investment Securities Fair Value TransferOfAvailableForSaleSecuritiesToInvestmentSecuritiesFairValue	0	usd
CY2023	bokf	Increase In Us Government Guaranteed Loans Eligible For Repurchase IncreaseInUSGovernmentGuaranteedLoansEligibleForRepurchase	14466000	usd
CY2022	bokf	Increase In Us Government Guaranteed Loans Eligible For Repurchase IncreaseInUSGovernmentGuaranteedLoansEligibleForRepurchase	34259000	usd
CY2021	bokf	Increase In Us Government Guaranteed Loans Eligible For Repurchase IncreaseInUSGovernmentGuaranteedLoansEligibleForRepurchase	87087000	usd
CY2023	bokf	Conveyance Of Other Real Estate Owned Guaranteed By Us Govt ConveyanceOfOtherRealEstateOwnedGuaranteedByUsGovt	5534000	usd
CY2022	bokf	Conveyance Of Other Real Estate Owned Guaranteed By Us Govt ConveyanceOfOtherRealEstateOwnedGuaranteedByUsGovt	8451000	usd
CY2021	bokf	Conveyance Of Other Real Estate Owned Guaranteed By Us Govt ConveyanceOfOtherRealEstateOwnedGuaranteedByUsGovt	6376000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	71865000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	22059000	usd
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	40798000	usd
CY2023	us-gaap	Reclassifications Reclassifications	Certain prior year amounts have been reclassified to conform to current year presentation.
CY2023	us-gaap	Nature Of Operations NatureOfOperations	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Nature of Operations</span></div><div style="text-align:justify"><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">BOK Financial, through its subsidiaries, provides a wide range of financial services to commercial and industrial customers, other financial institutions, municipalities and consumers. These services include depository and cash management; lending and lease financing; mortgage banking; securities brokerage, trading and underwriting; and personal and corporate trust.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">BOKF, NA operates as Bank of Oklahoma primarily in the Tulsa and Oklahoma City metropolitan areas of the state of Oklahoma and Bank of Texas primarily in the Dallas, Fort Worth, Houston and San Antonio metropolitan areas of the state of Texas. In addition, BOKF, NA does business as BOK Financial in the metropolitan areas of Phoenix, Arizona; Northwest Arkansas; Denver, Colorado; Kansas City, Missouri/Kansas; and as Bank of Albuquerque in Albuquerque, New Mexico. BOKF, NA also operates the TransFund electronic funds network and Cavanal Hill Investment Management.</span></div>
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Use of Estimates</span></div><div style="text-align:justify"><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Preparation of BOK Financial's Consolidated Financial Statements requires management to make estimates of future economic activities, including loan collectability, loss contingencies, prepayments and cash flows from customer accounts. These estimates are based upon current conditions and information available to management. Actual results may differ significantly from these estimates.</span></div>
CY2023	bokf	Maturity Of Federal Funds Sold Considered Cash Equivalents MaturityOfFederalFundsSoldConsideredCashEquivalents	P1D
CY2023	bokf	Maturity Of Resell Agreement Considered Cash Equivalents Minimum MaturityOfResellAgreementConsideredCashEquivalentsMinimum	P1D
CY2023	bokf	Maturity Of Resell Agreements Considered Cash Equivalents Maximum MaturityOfResellAgreementsConsideredCashEquivalentsMaximum	P30D
CY2023	bokf	Loans Number Of Days Past Due For Non Risk Graded Loan To Be Placed On Nonaccruing Status LoansNumberOfDaysPastDueForNonRiskGradedLoanToBePlacedOnNonaccruingStatus	P90D
CY2023	bokf	Loans Number Of Days After Notification Of Chapter7 Bankruptcy Non Risk Graded Loan Is Placed On Nonaccruing Status LoansNumberOfDaysAfterNotificationOfChapter7BankruptcyNonRiskGradedLoanIsPlacedOnNonaccruingStatus	P60D
CY2023	bokf	Minimum No Of Days After Which Past Due Non Risk Graded Loans Are Charged Off MinimumNoOfDaysAfterWhichPastDueNonRiskGradedLoansAreChargedOff	P60D
CY2023	bokf	Max No Of Days After Which Past Due Non Risk Graded Loans Are Charged Off MaxNoOfDaysAfterWhichPastDueNonRiskGradedLoansAreChargedOff	P180D
CY2023	bokf	Loans Number Of Days After Notification Of Chapter7 Bankruptcy Non Risk Graded Loan Is Charged Off LoansNumberOfDaysAfterNotificationOfChapter7BankruptcyNonRiskGradedLoanIsChargedOff	P60D
CY2022Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	558000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	558000	usd
CY2023Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	5193505000	usd
CY2023Q4	bokf	Trading Securities Net Unrealized Gains Losses TradingSecuritiesNetUnrealizedGainsLosses	98635000	usd
CY2022Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	4464161000	usd
CY2022Q4	bokf	Trading Securities Net Unrealized Gains Losses TradingSecuritiesNetUnrealizedGainsLosses	-323000	usd
CY2023Q4	bokf	Debt Securities Heldtomaturitygross DebtSecuritiesHeldtomaturitygross	2409090000	usd
CY2023Q4	bokf	Debt Securities Held To Maturity Carrying Value DebtSecuritiesHeldToMaturityCarryingValue	2244489000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	2072586000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	5139000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	177042000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	336000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	336000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Amortized Cost After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss	2408754000	usd
CY2023Q4	bokf	Debt Securities Held To Maturity Carrying Value After Allowance For Credit Loss DebtSecuritiesHeldToMaturityCarryingValueAfterAllowanceForCreditLoss	2244153000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	2072586000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	5139000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	177042000	usd
CY2023	bokf	Debt Securities Net Unrealized Loss Remaining In Aoci Included In Carrying Value For Afs Securities Transferred To Investment Securities DebtSecuritiesNetUnrealizedLossRemainingInAOCIIncludedInCarryingValueForAFSSecuritiesTransferredToInvestmentSecurities	-165000000	usd
CY2022Q4	bokf	Debt Securities Heldtomaturitygross DebtSecuritiesHeldtomaturitygross	2739241000	usd
CY2022Q4	bokf	Debt Securities Held To Maturity Carrying Value DebtSecuritiesHeldToMaturityCarryingValue	2514245000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	2346768000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	6611000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	174088000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Amortized Cost After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss	2738683000	usd
CY2022Q4	bokf	Debt Securities Held To Maturity Carrying Value After Allowance For Credit Loss DebtSecuritiesHeldToMaturityCarryingValueAfterAllowanceForCreditLoss	2513687000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	2346768000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	6611000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	174088000	usd
CY2022	bokf	Debt Securities Net Unrealized Loss Remaining In Aoci Included In Carrying Value For Afs Securities Transferred To Investment Securities DebtSecuritiesNetUnrealizedLossRemainingInAOCIIncludedInCarryingValueForAFSSecuritiesTransferredToInvestmentSecurities	-225000000	usd
CY2023Q4	bokf	Debt Securities Held To Maturity Carrying Value DebtSecuritiesHeldToMaturityCarryingValue	2244489000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	2072586000	usd
CY2023Q4	us-gaap	Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions	134
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	1931000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	5000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	1947071000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	177037000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	1949002000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	177042000	usd
CY2022Q4	us-gaap	Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions	143
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	2184167000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	174012000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	801000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	76000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	2184968000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	174088000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	12903305000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	12286681000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	52821000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	669445000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	12359413000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	11493860000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	28661000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	894214000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	12903305000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	12286681000	usd
CY2023	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	834704000	usd
CY2022	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	307481000	usd
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	622881000	usd
CY2023	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	1180000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	5054000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	5702000	usd
CY2023	us-gaap	Debt Securities Available For Sale Realized Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedLossExcludingOtherThanTemporaryImpairment	31816000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedLossExcludingOtherThanTemporaryImpairment	6025000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedLossExcludingOtherThanTemporaryImpairment	1998000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-7206000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-227000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	889000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	1123
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1205822000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	7969000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	8087455000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	661476000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	9293277000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	669445000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	1153
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	6173710000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	376598000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	3829168000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	517616000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	10002878000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	894214000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	usd
CY2023Q4	us-gaap	Loans Receivable With Fixed Rates Of Interest1 LoansReceivableWithFixedRatesOfInterest1	6633234000	usd
CY2023Q4	us-gaap	Loans Receivable With Variable Rates Of Interest1 LoansReceivableWithVariableRatesOfInterest1	17126265000	usd
CY2023Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	145469000	usd
CY2023Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	23904968000	usd
CY2022Q4	us-gaap	Loans Receivable With Fixed Rates Of Interest1 LoansReceivableWithFixedRatesOfInterest1	6366303000	usd
CY2022Q4	us-gaap	Loans Receivable With Variable Rates Of Interest1 LoansReceivableWithVariableRatesOfInterest1	16069050000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	121797000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	22557150000	usd
CY2023	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	7863000	usd
CY2022	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	6796000	usd
CY2023Q4	us-gaap	Unused Commitments To Extend Credit UnusedCommitmentsToExtendCredit	14800000000	usd
CY2023Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	711000000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	235704000	usd
CY2023	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	59518000	usd
CY2023	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	27316000	usd
CY2023	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	9217000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	277123000	usd
CY2022Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	60919000	usd
CY2023	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-11942000	usd
CY2023Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	48977000	usd
CY2023	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	46000000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	256421000	usd
CY2022	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	428000	usd
CY2022	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	28746000	usd
CY2022	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	7601000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	235704000	usd
CY2021Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	32977000	usd
CY2022	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	27942000	usd
CY2022Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	60919000	usd
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	388640000	usd
CY2021	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-95202000	usd
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	51351000	usd
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	14334000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	256421000	usd
CY2021	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-3944000	usd
CY2021Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	32977000	usd
CY2023Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	23759499000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	274431000	usd
CY2023Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	145469000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	2692000	usd
CY2023Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	23904968000	usd
CY2023Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	277123000	usd
CY2022Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	22435353000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	230134000	usd
CY2022Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	121797000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	5570000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	22557150000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	235704000	usd
CY2023Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	3743425000	usd
CY2023Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	4522989000	usd
CY2023Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	2982784000	usd
CY2023Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	1756064000	usd
CY2023Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	1234871000	usd
CY2023Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	3094093000	usd
CY2023Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	6543149000	usd
CY2023Q4	us-gaap	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	27593000	usd
CY2023Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	23904968000	usd
CY2022Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	4453665000	usd
CY2022Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	3294886000	usd
CY2022Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	2107063000	usd
CY2022Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	1734561000	usd
CY2022Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	1157972000	usd
CY2022Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	2992242000	usd
CY2022Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	6790248000	usd
CY2022Q4	us-gaap	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	26513000	usd
CY2022Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	22557150000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	145469000	usd
CY2023Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	102380000	usd
CY2023Q4	bokf	Financing Receivable Nonaccrual With Allowance FinancingReceivableNonaccrualWithAllowance	43089000	usd
CY2023Q4	bokf	Financing Receivable Nonaccrual Related Allowance FinancingReceivableNonaccrualRelatedAllowance	2692000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	121797000	usd
CY2022Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	90854000	usd
CY2022Q4	bokf	Financing Receivable Nonaccrual With Allowance FinancingReceivableNonaccrualWithAllowance	30943000	usd
CY2022Q4	bokf	Financing Receivable Nonaccrual Related Allowance FinancingReceivableNonaccrualRelatedAllowance	5570000	usd
CY2023	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	130000000	usd
CY2023	bokf	Number Of Days Past Due Following Modification To Be Considered A Payment Default NumberOfDaysPastDueFollowingModificationToBeConsideredAPaymentDefault	P30D
CY2023Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	23904968000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	48371000	usd
CY2022Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	22557150000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	76114000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1094202000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	974568000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	471979000	usd
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	409393000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	622223000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	565175000	usd
CY2023	us-gaap	Depreciation Depreciation	68700000	usd
CY2022	us-gaap	Depreciation Depreciation	68400000	usd
CY2021	us-gaap	Depreciation Depreciation	63400000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	221000000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	177000000	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y4M24D
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.031
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	34000000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	33351000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	32844000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	30416000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	28930000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	182273000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	341814000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	85512000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	256302000	usd
CY2023	us-gaap	Lease Cost LeaseCost	42200000	usd
CY2022	us-gaap	Lease Cost LeaseCost	41700000	usd
CY2021	us-gaap	Lease Cost LeaseCost	35800000	usd
CY2023	us-gaap	Operating Lease Expense OperatingLeaseExpense	25300000	usd
CY2022	us-gaap	Operating Lease Expense OperatingLeaseExpense	24500000	usd
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	23400000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	26800000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	23300000	usd
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	25300000	usd
CY2023	us-gaap	Short Term Lease Cost ShortTermLeaseCost	15600000	usd
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	13000000	usd
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	11500000	usd
CY2023Q4	bokf	Residential Mortgage Loans Held For Sale Unpaid Principal Balance Gross ResidentialMortgageLoansHeldForSaleUnpaidPrincipalBalanceGross	56922000	usd
CY2023Q4	bokf	Fair Valueof Residential Mortgage Loans Heldfor Sale FairValueofResidentialMortgageLoansHeldforSale	56457000	usd
CY2022Q4	bokf	Residential Mortgage Loans Held For Sale Unpaid Principal Balance Gross ResidentialMortgageLoansHeldForSaleUnpaidPrincipalBalanceGross	74941000	usd
CY2022Q4	bokf	Fair Valueof Residential Mortgage Loans Heldfor Sale FairValueofResidentialMortgageLoansHeldforSale	73938000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	56935000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	59979000	usd
CY2022Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	76131000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	11542000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	10492000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	9484000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	8269000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	5951000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	14241000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	59979000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	1044749000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	1044749000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	1044749000	usd
CY2022Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	75272000	usd
CY2023Q4	bokf	Residential Mortgage Loans Held For Sale Nonperforming ResidentialMortgageLoansHeldForSaleNonperforming	0	usd
CY2022Q4	bokf	Residential Mortgage Loans Held For Sale Nonperforming ResidentialMortgageLoansHeldForSaleNonperforming	0	usd
CY2022	bokf	Number Of Days For Past Due Residential Mortgage Loans Heldfor Sale NumberOfDaysForPastDueResidentialMortgageLoansHeldforSale	P90D
CY2023	bokf	Number Of Days For Past Due Residential Mortgage Loans Heldfor Sale NumberOfDaysForPastDueResidentialMortgageLoansHeldforSale	P90D
CY2023	bokf	Credit Losses Recognized On Residential Mortgage Loans Held For Sale CreditLossesRecognizedOnResidentialMortgageLoansHeldForSale	0	usd
CY2021	bokf	Credit Losses Recognized On Residential Mortgage Loans Held For Sale CreditLossesRecognizedOnResidentialMortgageLoansHeldForSale	0	usd
CY2022	bokf	Credit Losses Recognized On Residential Mortgage Loans Held For Sale CreditLossesRecognizedOnResidentialMortgageLoansHeldForSale	0	usd
CY2023	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	-5021000	usd
CY2022	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	7416000	usd
CY2021	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	76282000	usd
CY2023	bokf	Netchangeinunrealizedgainonmortgageloansheldforsale Netchangeinunrealizedgainonmortgageloansheldforsale	538000	usd
CY2022	bokf	Netchangeinunrealizedgainonmortgageloansheldforsale Netchangeinunrealizedgainonmortgageloansheldforsale	-4468000	usd
CY2021	bokf	Netchangeinunrealizedgainonmortgageloansheldforsale Netchangeinunrealizedgainonmortgageloansheldforsale	-5818000	usd
CY2023	bokf	Changeinfairvalueofmortgageloancommitments Changeinfairvalueofmortgageloancommitments	325000	usd
CY2022	bokf	Changeinfairvalueofmortgageloancommitments Changeinfairvalueofmortgageloancommitments	-5113000	usd
CY2021	bokf	Changeinfairvalueofmortgageloancommitments Changeinfairvalueofmortgageloancommitments	-14268000	usd
CY2023	bokf	Changeinthefairvalueofforwardsalescommitments Changeinthefairvalueofforwardsalescommitments	-1181000	usd
CY2022	bokf	Changeinthefairvalueofforwardsalescommitments Changeinthefairvalueofforwardsalescommitments	327000	usd
CY2021	bokf	Changeinthefairvalueofforwardsalescommitments Changeinthefairvalueofforwardsalescommitments	4516000	usd
CY2023	bokf	Mortgage Production Revenue MortgageProductionRevenue	-5339000	usd
CY2022	bokf	Mortgage Production Revenue MortgageProductionRevenue	-1838000	usd
CY2021	bokf	Mortgage Production Revenue MortgageProductionRevenue	60712000	usd
CY2023	bokf	Mortgage Servicing Fees MortgageServicingFees	61037000	usd
CY2022	bokf	Mortgage Servicing Fees MortgageServicingFees	51203000	usd
CY2021	bokf	Mortgage Servicing Fees MortgageServicingFees	45184000	usd
CY2023	bokf	Mortgage Banking Revenue MortgageBankingRevenue	55698000	usd
CY2022	bokf	Mortgage Banking Revenue MortgageBankingRevenue	49365000	usd
CY2021	bokf	Mortgage Banking Revenue MortgageBankingRevenue	105896000	usd
CY2023Q4	bokf	Residential Mortgage Loans Serviced Number Of Loans ResidentialMortgageLoansServicedNumberOfLoans	115967
CY2022Q4	bokf	Residential Mortgage Loans Serviced Number Of Loans ResidentialMortgageLoansServicedNumberOfLoans	110541
CY2021Q4	bokf	Residential Mortgage Loans Serviced Number Of Loans ResidentialMortgageLoansServicedNumberOfLoans	102008
CY2023Q4	bokf	Residential Mortgage Loans Serviced Outstanding Principal ResidentialMortgageLoansServicedOutstandingPrincipal	20382192000	usd
CY2022Q4	bokf	Residential Mortgage Loans Serviced Outstanding Principal ResidentialMortgageLoansServicedOutstandingPrincipal	18863201000	usd
CY2021Q4	bokf	Residential Mortgage Loans Serviced Outstanding Principal ResidentialMortgageLoansServicedOutstandingPrincipal	16442446000	usd
CY2023Q4	bokf	Weighted Average Interest Rateof Loans Servicedfor Others WeightedAverageInterestRateofLoansServicedforOthers	0.0364
CY2022Q4	bokf	Weighted Average Interest Rateof Loans Servicedfor Others WeightedAverageInterestRateofLoansServicedforOthers	0.0359
CY2021Q4	bokf	Weighted Average Interest Rateof Loans Servicedfor Others WeightedAverageInterestRateofLoansServicedforOthers	0.0358
CY2023	bokf	Residential Mortgage Loans Serviced Weighted Average Remaining Term ResidentialMortgageLoansServicedWeightedAverageRemainingTerm	P280M
CY2022	bokf	Residential Mortgage Loans Serviced Weighted Average Remaining Term ResidentialMortgageLoansServicedWeightedAverageRemainingTerm	P283M
CY2021	bokf	Residential Mortgage Loans Serviced Weighted Average Remaining Term ResidentialMortgageLoansServicedWeightedAverageRemainingTerm	P281M
CY2020Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	101172000	usd
CY2021	us-gaap	Servicing Asset At Fair Value Additions ServicingAssetAtFairValueAdditions	31132000	usd
CY2021	bokf	Servicing Asset At Fair Value Acquisitions ServicingAssetAtFairValueAcquisitions	28018000	usd
CY2021	us-gaap	Asset At Fair Value Changes In Fair Value Resulting From Changes In Assumptions AssetAtFairValueChangesInFairValueResultingFromChangesInAssumptions	41637000	usd
CY2022	us-gaap	Servicing Asset At Fair Value Additions ServicingAssetAtFairValueAdditions	18215000	usd
CY2022	bokf	Servicing Asset At Fair Value Acquisitions ServicingAssetAtFairValueAcquisitions	47675000	usd
CY2022	bokf	Change In Fair Value Due To Loan Runoff ChangeInFairValueDueToLoanRunoff	-31741000	usd
CY2023	us-gaap	Servicing Asset At Fair Value Additions ServicingAssetAtFairValueAdditions	12142000	usd
CY2023	bokf	Servicing Asset At Fair Value Acquisitions ServicingAssetAtFairValueAcquisitions	34593000	usd
CY2023	bokf	Change In Fair Value Due To Loan Runoff ChangeInFairValueDueToLoanRunoff	-27344000	usd
CY2023	us-gaap	Asset At Fair Value Changes In Fair Value Resulting From Changes In Assumptions AssetAtFairValueChangesInFairValueResultingFromChangesInAssumptions	-3115000	usd
CY2023Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	293884000	usd
CY2023	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Discount Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate	0.0972
CY2022	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Discount Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate	0.0951
CY2023	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Prepayment Speed ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed	0.0734
CY2022	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Prepayment Speed ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed	0.0754
CY2022	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Performing Loan Service Cost Minimum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePerformingLoanServiceCostMinimum	69	usd
CY2022	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Performing Loan Service Cost Maximum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePerformingLoanServiceCostMaximum	94	usd
CY2022	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Delinquent Loan Service Cost Minimum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueDelinquentLoanServiceCostMinimum	150	usd
CY2022	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Delinquent Loan Svc Cost Maximum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueDelinquentLoanSvcCostMaximum	500	usd
CY2022	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Foreclosure Loan Service Cost Minimum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueForeclosureLoanServiceCostMinimum	875	usd
CY2022	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Foreclosure Loan Service Cost Maximum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueForeclosureLoanServiceCostMaximum	8000	usd
CY2023	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Escrow Earnings Rate ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueEscrowEarningsRate	0.0390
CY2022	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Escrow Earnings Rate ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueEscrowEarningsRate	0.0406
CY2023	bokf	Servicing Assetsand Servicing Liabilitiesat Fair Value Assumptions Usedto Estimate Fair Value Delinquency Rate ServicingAssetsandServicingLiabilitiesatFairValueAssumptionsUsedtoEstimateFairValueDelinquencyRate	0.0206
CY2022	bokf	Servicing Assetsand Servicing Liabilitiesat Fair Value Assumptions Usedto Estimate Fair Value Delinquency Rate ServicingAssetsandServicingLiabilitiesatFairValueAssumptionsUsedtoEstimateFairValueDelinquencyRate	0.0233
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	8637633000	usd
CY2023	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	540068000	usd
CY2022	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	108956000	usd
CY2021	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	21961000	usd
CY2023	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	2913000	usd
CY2022	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	489000	usd
CY2021	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	374000	usd
CY2023	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	83616000	usd
CY2022	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	12304000	usd
CY2021	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	11149000	usd
CY2023	us-gaap	Interest Expense Deposits InterestExpenseDeposits	626597000	usd
CY2022	us-gaap	Interest Expense Deposits InterestExpenseDeposits	121749000	usd
CY2021	us-gaap	Interest Expense Deposits InterestExpenseDeposits	33484000	usd
CY2023Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	1100000000	usd
CY2022Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	470000000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	2400000000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	258000000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	120000000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	79000000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	42000000	usd
CY2023Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	91000000	usd
CY2023Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	5700000	usd
CY2022Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	10000000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	8955450000	usd
CY2023	us-gaap	Long Term Debt Average Amount Outstanding LongTermDebtAverageAmountOutstanding	8763904000	usd
CY2023	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.0506
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	7138490000	usd
CY2022	us-gaap	Long Term Debt Average Amount Outstanding LongTermDebtAverageAmountOutstanding	3025223000	usd
CY2022	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.0195
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	2494428000	usd
CY2021	us-gaap	Long Term Debt Average Amount Outstanding LongTermDebtAverageAmountOutstanding	5062621000	usd
CY2021	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.0056
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	178225000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	3225000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	1775000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	134592000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	8955450000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	183724000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	255244000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	76361000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	69385000	usd
CY2023Q4	bokf	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	61204000	usd
CY2022Q4	bokf	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	49839000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	41350000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	34645000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	12682000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	12915000	usd
CY2023Q4	bokf	Deferred Tax Assets Purchased Loan Discount DeferredTaxAssetsPurchasedLoanDiscount	3546000	usd
CY2022Q4	bokf	Deferred Tax Assets Purchased Loan Discount DeferredTaxAssetsPurchasedLoanDiscount	4955000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	6068000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	4625000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	4860000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	5792000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	47169000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	42808000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	436964000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	480208000	usd
CY2023Q4	bokf	Deferred Tax Liabilities Rightof Use Asset DeferredTaxLiabilitiesRightofUseAsset	51943000	usd
CY2022Q4	bokf	Deferred Tax Liabilities Rightof Use Asset DeferredTaxLiabilitiesRightofUseAsset	40741000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	47646000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	49001000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	8166000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	11280000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	4578000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	7163000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	12148000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	12333000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	42887000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	38357000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	167368000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	158875000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	269596000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	321333000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	152600000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	127144000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	121196000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	19298000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	18185000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	21065000	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	171898000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	145329000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	142261000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-17973000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-4700000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	29777000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1810000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-765000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	7737000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-19783000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5465000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	37514000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	152115000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	139864000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	179775000	usd
CY2023	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	143482000	usd
CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	138633000	usd
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	167181000	usd
CY2023	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	5786000	usd
CY2022	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	5714000	usd
CY2021	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	6084000	usd
CY2023	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	13330000	usd
CY2022	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	13490000	usd
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	22489000	usd
CY2023	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	2673000	usd
CY2022	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	8883000	usd
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	8801000	usd
CY2023	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	3762000	usd
CY2022	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2338000	usd
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	4990000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	152115000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	139864000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	179775000	usd
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.008
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.008
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.007
CY2023	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.020
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.020
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.028
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	0.004
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	0.014
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	0.011
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.005
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.004
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.006
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.223
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.212
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.226
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	19583000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	21092000	usd
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	22902000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3239000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3465000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3961000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	usd
CY2022	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	usd
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1754000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	4865000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	4974000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	4017000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17957000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	19583000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	21092000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	14100000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	1600000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	1800000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	2300000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	5700000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	6000000	usd
CY2023	bokf	Unrecognized Tax Benefits Numberof Reporting Periods Openfor Examination Federal UnrecognizedTaxBenefitsNumberofReportingPeriodsOpenforExaminationFederal	3
CY2023	bokf	Unrecognized Tax Benefits Numberof Reporting Periods Openfor Examination State Minimum UnrecognizedTaxBenefitsNumberofReportingPeriodsOpenforExaminationStateMinimum	3
CY2023	bokf	Unrecognized Tax Benefits Numberof Reporting Periods Openfor Examination State Maximum UnrecognizedTaxBenefitsNumberofReportingPeriodsOpenforExaminationStateMaximum	6
CY2023Q4	bokf	Mutual Funds Managed Net Asset Value Of Units In Mutual Funds MutualFundsManagedNetAssetValueOfUnitsInMutualFunds	1.00
CY2023Q4	bokf	Mutual Funds Managed Net Asset Value Of Units In Mutual Funds MutualFundsManagedNetAssetValueOfUnitsInMutualFunds	1.00
CY2022	bokf	Assets Purchased From Mutual Funds Managed AssetsPurchasedFromMutualFundsManaged	0	usd
CY2023	bokf	Assets Purchased From Mutual Funds Managed AssetsPurchasedFromMutualFundsManaged	0	usd
CY2023	bokf	Minimum Average Cash Balance Required To Be Maintained At Federal Reserve By Subsidiary Bank MinimumAverageCashBalanceRequiredToBeMaintainedAtFederalReserveBySubsidiaryBank	717000000	usd
CY2022	bokf	Minimum Average Cash Balance Required To Be Maintained At Federal Reserve By Subsidiary Bank MinimumAverageCashBalanceRequiredToBeMaintainedAtFederalReserveBySubsidiaryBank	890000000	usd
CY2023Q4	bokf	Common Equity Tier One Capitalto Risk Weighted Assets Minimum Requirement CommonEquityTierOneCapitaltoRiskWeightedAssetsMinimumRequirement	0.0450
CY2022Q4	bokf	Common Equity Tier One Capitalto Risk Weighted Assets Minimum Requirement CommonEquityTierOneCapitaltoRiskWeightedAssetsMinimumRequirement	0.0450
CY2023Q4	bokf	Capital Conservation Buffer Common Equity Tier Oneto Risk Weighted Assets CapitalConservationBufferCommonEquityTierOnetoRiskWeightedAssets	0.0250
CY2022Q4	bokf	Capital Conservation Buffer Common Equity Tier Oneto Risk Weighted Assets CapitalConservationBufferCommonEquityTierOnetoRiskWeightedAssets	0.0250
CY2022Q4	bokf	Minimum Capital Requirement Including Capital Conservation Buffer Commonequity Tier Oneto Risk Weighted Assets MinimumCapitalRequirementIncludingCapitalConservationBufferCommonequityTierOnetoRiskWeightedAssets	0.0700
CY2023Q4	bokf	Minimum Capital Requirement Including Capital Conservation Buffer Commonequity Tier Oneto Risk Weighted Assets MinimumCapitalRequirementIncludingCapitalConservationBufferCommonequityTierOnetoRiskWeightedAssets	0.0700
CY2023Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	4683510000	usd
CY2023Q4	us-gaap	Common Equity Tier One Capital Ratio CommonEquityTierOneCapitalRatio	0.1206
CY2022Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	4460054000	usd
CY2022Q4	us-gaap	Common Equity Tier One Capital Ratio CommonEquityTierOneCapitalRatio	0.1169
CY2022Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600
CY2023Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600
CY2022Q4	bokf	Capital Conservation Buffer Tier1 Capitalto Risk Weighted Assets CapitalConservationBufferTier1CapitaltoRiskWeightedAssets	0.0250
CY2023Q4	bokf	Capital Conservation Buffer Tier1 Capitalto Risk Weighted Assets CapitalConservationBufferTier1CapitaltoRiskWeightedAssets	0.0250
CY2023Q4	bokf	Minimum Capital Requirement Including Capital Conservation Buffer Tier Oneto Risk Weighted Assets MinimumCapitalRequirementIncludingCapitalConservationBufferTierOnetoRiskWeightedAssets	0.0850
CY2022Q4	bokf	Minimum Capital Requirement Including Capital Conservation Buffer Tier Oneto Risk Weighted Assets MinimumCapitalRequirementIncludingCapitalConservationBufferTierOnetoRiskWeightedAssets	0.0850
CY2023Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	4686487000	usd
CY2023Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1207
CY2022Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	4464763000	usd
CY2022Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1171
CY2022Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2023Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2022Q4	bokf	Capital Conservation Buffer Total Capitalto Risk Weighted Assets CapitalConservationBufferTotalCapitaltoRiskWeightedAssets	0.0250
CY2023Q4	bokf	Capital Conservation Buffer Total Capitalto Risk Weighted Assets CapitalConservationBufferTotalCapitaltoRiskWeightedAssets	0.0250
CY2022Q4	bokf	Minimum Capital Requirement Including Capital Conservation Bufferfor Total Capitalto Risk Weighted Assets MinimumCapitalRequirementIncludingCapitalConservationBufferforTotalCapitaltoRiskWeightedAssets	0.1050
CY2023Q4	bokf	Minimum Capital Requirement Including Capital Conservation Bufferfor Total Capitalto Risk Weighted Assets MinimumCapitalRequirementIncludingCapitalConservationBufferforTotalCapitaltoRiskWeightedAssets	0.1050
CY2023Q4	us-gaap	Capital Capital	5110471000	usd
CY2023Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1316
CY2022Q4	us-gaap	Capital Capital	4830827000	usd
CY2022Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1267
CY2023Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2022Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2022Q4	bokf	Minimum Capital Requirements Including Capital Conservation Buffer Tier One Capitalto Average Assets MinimumCapitalRequirementsIncludingCapitalConservationBufferTierOneCapitaltoAverageAssets	0.0400
CY2023Q4	bokf	Minimum Capital Requirements Including Capital Conservation Buffer Tier One Capitalto Average Assets MinimumCapitalRequirementsIncludingCapitalConservationBufferTierOneCapitaltoAverageAssets	0.0400
CY2023Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	4686487000	usd
CY2023Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0945
CY2022Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	4464763000	usd
CY2022Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0991
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	335868000	usd
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-341369000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	3704000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-345073000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-81576000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-263497000	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	72371000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-1227414000	usd
CY2022	bokf	Oci Unrealized Gain Loss On Securities Transferred To Investment Securities From Available For Sale OCIUnrealizedGainLossOnSecuritiesTransferredToInvestmentSecuritiesFromAvailableForSale	0	usd
CY2022	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Before Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax	-42514000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	3483000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-971000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-1187412000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-278086000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-909326000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-836955000	usd
CY2023	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	218293000	usd
CY2023	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Before Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax	-60394000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-30636000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	309323000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	71468000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	237855000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-599100000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	530746000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	520273000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	618121000	usd
CY2023	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	4253000	usd
CY2022	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	3803000	usd
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	4299000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	526493000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	516470000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	613822000	usd
CY2023	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	usd
CY2022	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	usd
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	526493000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	516470000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	613822000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	66184832	shares
CY2022	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	67706014	shares
CY2021	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	69071511	shares
CY2023	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	533263	shares
CY2022	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	493286	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	479591	shares
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	65651569	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	67212728	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	68591920	shares
CY2023	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2022	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	7	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2402	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65651569	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	67212735	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	68594322	shares
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.02
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.68
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.95
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.02
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.68
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.95
CY2023	bokf	Nir Expense From External Sources NirExpenseFromExternalSources	1272180000	usd
CY2023	bokf	Ni Rexpensefrominternalsources NIRexpensefrominternalsources	0	usd
CY2023	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1272180000	usd
CY2023	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	46000000	usd
CY2023	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	1226180000	usd
CY2023	us-gaap	Noninterest Income NoninterestIncome	789949000	usd
CY2023	us-gaap	Noninterest Expense NoninterestExpense	1332881000	usd
CY2023	bokf	Netdirectcontribution Netdirectcontribution	683248000	usd
CY2023	bokf	Gain Losson Financial Instruments Net GainLossonFinancialInstrumentsNet	0	usd
CY2023	bokf	Segment Reporting Changein Fair Valueof Mortgage Servicing Rights SegmentReportingChangeinFairValueofMortgageServicingRights	0	usd
CY2023	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	0	usd
CY2023	bokf	Corporate Expense Allocations CorporateExpenseAllocations	0	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	683248000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	152115000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	531133000	usd
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	387000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	530746000	usd
CY2023	bokf	Average Assets For Reporting Period AverageAssetsForReportingPeriod	48244154000	usd
CY2022	bokf	Nir Expense From External Sources NirExpenseFromExternalSources	1211380000	usd
CY2022	bokf	Ni Rexpensefrominternalsources NIRexpensefrominternalsources	0	usd
CY2022	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1211380000	usd
CY2022	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	30000000	usd
CY2022	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	1181380000	usd
CY2022	us-gaap	Noninterest Income NoninterestIncome	643257000	usd
CY2022	us-gaap	Noninterest Expense NoninterestExpense	1164480000	usd
CY2022	bokf	Netdirectcontribution Netdirectcontribution	660157000	usd
CY2022	bokf	Gain Losson Financial Instruments Net GainLossonFinancialInstrumentsNet	0	usd
CY2022	bokf	Segment Reporting Changein Fair Valueof Mortgage Servicing Rights SegmentReportingChangeinFairValueofMortgageServicingRights	0	usd
CY2022	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	0	usd
CY2022	bokf	Corporate Expense Allocations CorporateExpenseAllocations	0	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	660157000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	139864000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	520293000	usd
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	20000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	520273000	usd
CY2022	bokf	Average Assets For Reporting Period AverageAssetsForReportingPeriod	47024636000	usd
CY2021	bokf	Nir Expense From External Sources NirExpenseFromExternalSources	1118033000	usd
CY2021	bokf	Ni Rexpensefrominternalsources NIRexpensefrominternalsources	0	usd
CY2021	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1118033000	usd
CY2021	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-100000000	usd
CY2021	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	1218033000	usd
CY2021	us-gaap	Noninterest Income NoninterestIncome	755775000	usd
CY2021	us-gaap	Noninterest Expense NoninterestExpense	1177708000	usd
CY2021	bokf	Netdirectcontribution Netdirectcontribution	796100000	usd
CY2021	bokf	Gain Losson Financial Instruments Net GainLossonFinancialInstrumentsNet	0	usd
CY2021	bokf	Segment Reporting Changein Fair Valueof Mortgage Servicing Rights SegmentReportingChangeinFairValueofMortgageServicingRights	0	usd
CY2021	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	0	usd
CY2021	bokf	Corporate Expense Allocations CorporateExpenseAllocations	0	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	796100000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	179775000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	616325000	usd
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-1796000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	618121000	usd
CY2021	bokf	Average Assets For Reporting Period AverageAssetsForReportingPeriod	50151703000	usd
CY2023Q4	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2023Q4	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2023Q4	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2023Q4	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false

Files In Submission

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$BOKF
BOK FINANCIAL CORP Stock $bokf

2024 Q1 Form 10-K Financial Statement

#000087535724000008 Filed on February 21, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BOKF BOK FINANCIAL CORP Stock $bokf

2024 Q1 Form 10-K Financial Statement

#000087535724000008 Filed on February 21, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BOKF
BOK FINANCIAL CORP Stock $bokf