$BOKF
BOK FINANCIAL CORP Stock $bokf

$bokf Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000087535722000013 Filed on February 23, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue		$1.180B
YoY Change		-7.02%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development		$151.6M
YoY Change		11.89%
% of Gross Profit
Depreciation & Amortization	$26.30M	$63.40M	$24.70M
YoY Change	6.48%	16.76%	-3.52%
% of Gross Profit
Operating Expenses		$151.6M
YoY Change		11.89%
Operating Profit
YoY Change
Interest Expense		$61.90M
YoY Change		-61.45%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$152.0M	$796.1M	$199.8M
YoY Change	-23.92%	41.19%	41.7%
Income Tax	$34.80M	$179.8M	$45.10M
% Of Pretax Income	22.89%	22.58%	22.57%
Net Earnings	$117.3M	$618.1M	$154.2M
YoY Change	-23.93%	42.09%	39.67%
Net Earnings / Revenue		52.39%
Basic Earnings Per Share		$8.95
Diluted Earnings Per Share	$1.722M	$8.95	$2.219M
COMMON SHARES
Basic Shares Outstanding		68.59M shares
Diluted Shares Outstanding		68.59M shares

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$2.837B		$1.181B
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	$574.1M	$574.0M	$551.3M
YoY Change	4.14%	4.17%	2.95%
Goodwill	$1.045B		$1.048B
YoY Change	-0.32%		0.0%
Intangibles	$91.78M		$113.4M
YoY Change	-19.09%		-9.45%
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	$50.25B	$50.25B	$46.67B
YoY Change	7.67%	7.67%	10.67%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$273.0M	$273.0M	$324.0M
YoY Change	-15.74%	-15.74%	24.62%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$2.326B	$2.326B	$1.662B
YoY Change	39.95%	39.95%	-56.47%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$273.0M	$273.0M	$324.0M
YoY Change	-15.74%	-15.74%	24.62%
LONG-TERM LIABILITIES
Long-Term Debt	$168.0M	$168.0M	$1.959B
YoY Change	-91.42%	-91.42%	546.53%
Other Long-Term Liabilities	$872.0M	$872.0M	$1.091B
YoY Change	-20.07%	-20.07%	35.36%
Total Long-Term Liabilities	$1.040B	$1.040B	$3.050B
YoY Change	-65.9%	-65.9%	175.02%
TOTAL LIABILITIES
Total Short-Term Liabilities	$273.0M	$273.0M	$324.0M
Total Long-Term Liabilities	$1.040B	$1.040B	$3.050B
Total Liabilities	$44.88B	$44.89B	$41.38B
YoY Change	8.46%	8.41%	10.91%
SHAREHOLDERS EQUITY
Retained Earnings	$4.448B		$3.974B
YoY Change	11.93%		6.54%
Common Stock	$1.379B		$1.368B
YoY Change	0.78%		1.26%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$535.1M		$411.3M
YoY Change	30.09%		24.69%
Treasury Stock Shares	7.786M shares		6.358M shares
Shareholders Equity	$5.364B	$5.364B	$5.266B
YoY Change
Total Liabilities & Shareholders Equity	$50.25B	$50.25B	$46.67B
YoY Change	7.67%	7.67%	10.67%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	$117.3M	$618.1M	$154.2M
YoY Change	-23.93%	42.09%	39.67%
Depreciation, Depletion And Amortization	$26.30M	$63.40M	$24.70M
YoY Change	6.48%	16.76%	-3.52%
Cash From Operating Activities	-$3.609B	-$3.693B	-$776.8M
YoY Change	364.64%	787.09%	-233.29%
INVESTING ACTIVITIES
Capital Expenditures	-$74.20M	-$204.3M	$866.1M
YoY Change	-108.57%	44.79%	-1239.61%
Acquisitions
YoY Change
Other Investing Activities	$529.4M	$2.807B	-$450.4M
YoY Change	-217.54%	-221.11%	-244.78%
Cash From Investing Activities	$455.3M	$2.603B	$415.8M
YoY Change	9.5%	-205.85%	76.79%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$122.8M
YoY Change		52.06%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	4.099B	$2.747B	535.2M
YoY Change	665.96%	-1.79%	-168.12%
NET CHANGE
Cash From Operating Activities	-3.609B	-$3.693B	-776.8M
Cash From Investing Activities	455.3M	$2.603B	415.8M
Cash From Financing Activities	4.099B	$2.747B	535.2M
Net Change In Cash	945.4M	$1.657B	174.2M
YoY Change	442.71%	-2217.42%	439.32%
FREE CASH FLOW
Cash From Operating Activities	-$3.609B	-$3.693B	-$776.8M
Capital Expenditures	-$74.20M	-$204.3M	$866.1M
Free Cash Flow	-$3.535B	-$3.488B	-$1.643B
YoY Change	115.17%	1167.75%	-349.38%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0000875357
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-37811
CY2021	dei	Entity Registrant Name EntityRegistrantName	BOK FINANCIAL CORP
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	OK
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	73-1373454
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	Boston Avenue at Second Street
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Tulsa,
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	OK
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	74172
CY2021	dei	City Area Code CityAreaCode	918
CY2021	dei	Local Phone Number LocalPhoneNumber	588-6000
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	2600000000	USD
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	68322916	shares
CY2021	dei	Auditor Firm AuditorFirmId	42
CY2021	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2021	dei	Auditor Location AuditorLocation	Tulsa, Oklahoma
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CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	678193000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-1796000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	41000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-73000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	354624000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	665975000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	678266000	USD
CY2021Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	712067000	USD
CY2020Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	798757000	USD
CY2021Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	2125343000	USD
CY2020Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	381816000	USD
CY2021Q4	us-gaap	Trading Securities TradingSecurities	9136813000	USD
CY2020Q4	us-gaap	Trading Securities TradingSecurities	4707975000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	231395000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	272431000	USD
CY2021Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	210444000	USD
CY2020Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	244843000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	13157817000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	13050665000	USD
CY2021Q4	bokf	Fair Value Option Securities FairValueOptionSecurities	43770000	USD
CY2020Q4	bokf	Fair Value Option Securities FairValueOptionSecurities	114982000	USD
CY2021Q4	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	83113000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	171391000	USD
CY2021Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	192295000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	252316000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	20205680000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	23007520000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	256421000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	388640000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	19949259000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	22618880000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	574148000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	551308000	USD
CY2021Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	223021000	USD
CY2020Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	245880000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	1044749000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	1048091000	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	91778000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	113436000	USD
CY2021Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	163198000	USD
CY2020Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	101172000	USD
CY2021Q4	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	6083000	USD
CY2020Q4	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	15060000	USD
CY2021Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	24589000	USD
CY2020Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	90526000	USD
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CY2020Q4	us-gaap	Derivative Assets DerivativeAssets	810688000	USD
CY2021Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	405607000	USD
CY2020Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	398758000	USD
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CY2021Q4	us-gaap	Assets Assets	50249431000	USD
CY2020Q4	us-gaap	Assets Assets	46671088000	USD
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CY2020Q4	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	12266338000	USD
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CY2020Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	21158422000	USD
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CY2020Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	751992000	USD
CY2021Q4	us-gaap	Time Deposits TimeDeposits	1704328000	USD
CY2020Q4	us-gaap	Time Deposits TimeDeposits	1967128000	USD
CY2021Q4	us-gaap	Deposits Deposits	41242059000	USD
CY2020Q4	us-gaap	Deposits Deposits	36143880000	USD
CY2021Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	2326449000	USD
CY2020Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	1662386000	USD
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CY2021Q4	us-gaap	Subordinated Debt SubordinatedDebt	131226000	USD
CY2020Q4	us-gaap	Subordinated Debt SubordinatedDebt	276005000	USD
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CY2021Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	275625000	USD
CY2020Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	405779000	USD
CY2021Q4	srt	Payables To Broker Dealers And Clearing Organizations PayablesToBrokerDealersAndClearingOrganizations	160686000	USD
CY2020Q4	srt	Payables To Broker Dealers And Clearing Organizations PayablesToBrokerDealersAndClearingOrganizations	257627000	USD
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CY2020Q4	us-gaap	Other Liabilities OtherLiabilities	427213000	USD
CY2021Q4	us-gaap	Liabilities Liabilities	44881060000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	41379527000	USD
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CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2500000000	shares
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2500000000	shares
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CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	75995205	shares
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CY2021Q4	us-gaap	Common Stock Value CommonStockValue	5000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	5000	USD
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CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1368062000	USD
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4447691000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3973675000	USD
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CY2021Q4	us-gaap	Treasury Stock Value TreasuryStockValue	535129000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	411344000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	72371000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	335868000	USD
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CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	5266266000	USD
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CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5291561000	USD
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CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	46671088000	USD
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CY2019	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	129483000	USD
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CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	143496000	USD
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CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4863919000	USD
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CY2020	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	75830000	USD
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CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	144437000	USD
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CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5291561000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	616325000	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
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CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5368371000	USD
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CY2020	us-gaap	Profit Loss ProfitLoss	435071000	USD
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CY2019	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	44000000	USD
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CY2019	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	53517000	USD
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CY2020	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	59253000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	25936000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	9759000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	16392000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	15544000	USD
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CY2020	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	99013000	USD
CY2019	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	95416000	USD
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CY2020	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	15949000	USD
CY2019	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	583000	USD
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CY2020	bokf	Netgainonmortgageloansheldforsale Netgainonmortgageloansheldforsale	114545000	USD
CY2019	bokf	Netgainonmortgageloansheldforsale Netgainonmortgageloansheldforsale	40402000	USD
CY2021	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	2818789000	USD
CY2020	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	3764112000	USD
CY2019	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	3025930000	USD
CY2021	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	2939522000	USD
CY2020	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	3817475000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-3692577000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-416256000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-473679000	USD
CY2019	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	3035600000	USD
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CY2020	bokf	Capitalizedmortgageservicingrights Capitalizedmortgageservicingrights	31209000	USD
CY2019	bokf	Capitalizedmortgageservicingrights Capitalizedmortgageservicingrights	35128000	USD
CY2021	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	4357950000	USD
CY2020	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	2103931000	USD
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CY2020	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-945087000	USD
CY2019	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	740868000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	12568000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1739000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-18955000	USD
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CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	8895000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	92463000	USD
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CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	46992000	USD
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CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	3500081000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2695067000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1841069000	USD
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	4607199000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	4575324000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	5245256000	USD
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	622881000	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	384507000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1211718000	USD
CY2021	bokf	Change In Amount Receivable On Unsettled Security Transactions ChangeInAmountReceivableOnUnsettledSecurityTransactions	-10406000	USD
CY2020	bokf	Change In Amount Receivable On Unsettled Security Transactions ChangeInAmountReceivableOnUnsettledSecurityTransactions	-6357000	USD
CY2019	bokf	Change In Amount Receivable On Unsettled Security Transactions ChangeInAmountReceivableOnUnsettledSecurityTransactions	25410000	USD
CY2021	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-2853326000	USD
CY2019	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	44414000	USD
CY2021	us-gaap	Payments For Proceeds From Derivative Instrument Investing Activities PaymentsForProceedsFromDerivativeInstrumentInvestingActivities	-161093000	USD
CY2020	us-gaap	Payments For Proceeds From Derivative Instrument Investing Activities PaymentsForProceedsFromDerivativeInstrumentInvestingActivities	121130000	USD
CY2019	us-gaap	Payments For Proceeds From Derivative Instrument Investing Activities PaymentsForProceedsFromDerivativeInstrumentInvestingActivities	-33566000	USD
CY2021	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	88278000	USD
CY2020	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	289161000	USD
CY2019	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	116105000	USD
CY2021	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	165040000	USD
CY2020	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	73135000	USD
CY2019	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	62576000	USD
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	204287000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	141134000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	384639000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	2602672000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2458835000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2323737000	USD
CY2021	bokf	Net Change In Demand Deposits Transaction Deposits And Savings Accounts NetChangeInDemandDepositsTransactionDepositsAndSavingsAccounts	5360979000	USD
CY2020	bokf	Net Change In Demand Deposits Transaction Deposits And Savings Accounts NetChangeInDemandDepositsTransactionDepositsAndSavingsAccounts	8773433000	USD
CY2019	bokf	Net Change In Demand Deposits Transaction Deposits And Savings Accounts NetChangeInDemandDepositsTransactionDepositsAndSavingsAccounts	2252936000	USD
CY2021	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-262800000	USD
CY2020	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-250721000	USD
CY2019	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	104288000	USD
CY2021	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-1269241000	USD
CY2020	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-5091026000	USD
CY2019	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	1110970000	USD
CY2021	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	150000000	USD
CY2020	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	0	USD
CY2019	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	0	USD
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-117452000	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	63521000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-41651000	USD
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-4874000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-4933000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-7000	USD
CY2021	bokf	Net Change In Derivative Margin Accounts NetChangeInDerivativeMarginAccounts	-467865000	USD
CY2020	bokf	Net Change In Derivative Margin Accounts NetChangeInDerivativeMarginAccounts	-600218000	USD
CY2019	bokf	Net Change In Derivative Margin Accounts NetChangeInDerivativeMarginAccounts	-207122000	USD
CY2021	us-gaap	Payments For Proceeds From Derivative Instrument Financing Activities PaymentsForProceedsFromDerivativeInstrumentFinancingActivities	79962000	USD
CY2020	us-gaap	Payments For Proceeds From Derivative Instrument Financing Activities PaymentsForProceedsFromDerivativeInstrumentFinancingActivities	-127054000	USD
CY2019	us-gaap	Payments For Proceeds From Derivative Instrument Financing Activities PaymentsForProceedsFromDerivativeInstrumentFinancingActivities	33622000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	117938000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	75830000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	129483000	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	144105000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	144437000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	143496000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2746742000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2796843000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2912813000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1656837000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-78248000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	115397000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1180573000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1258821000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1143424000	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2837410000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1180573000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1258821000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	68775000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	160288000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	417070000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	135331000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	136181000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	87361000	USD
CY2021	bokf	Maturity Of Federal Funds Sold Considered Cash Equivalents MaturityOfFederalFundsSoldConsideredCashEquivalents	P1D
CY2021	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	8320000	USD
CY2020	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	85323000	USD
CY2019	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	10665000	USD
CY2021	bokf	Increase In Us Government Guaranteed Loans Eligible For Repurchase IncreaseInUSGovernmentGuaranteedLoansEligibleForRepurchase	87087000	USD
CY2020	bokf	Increase In Us Government Guaranteed Loans Eligible For Repurchase IncreaseInUSGovernmentGuaranteedLoansEligibleForRepurchase	290977000	USD
CY2019	bokf	Increase In Us Government Guaranteed Loans Eligible For Repurchase IncreaseInUSGovernmentGuaranteedLoansEligibleForRepurchase	91634000	USD
CY2021	bokf	Conveyance Of Other Real Estate Owned Guaranteed By Us Govt ConveyanceOfOtherRealEstateOwnedGuaranteedByUsGovt	6376000	USD
CY2020	bokf	Conveyance Of Other Real Estate Owned Guaranteed By Us Govt ConveyanceOfOtherRealEstateOwnedGuaranteedByUsGovt	11322000	USD
CY2019	bokf	Conveyance Of Other Real Estate Owned Guaranteed By Us Govt ConveyanceOfOtherRealEstateOwnedGuaranteedByUsGovt	28669000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	40798000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	16177000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	62755000	USD
CY2021	us-gaap	Reclassifications Reclassifications	Certain prior year amounts have been reclassified to conform to current year presentation.
CY2021	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 and Houston 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, Cavanal Hill Investment Management, and BOK Financial Asset Management, Inc.</span></div>
CY2021	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>
CY2021	bokf	Maturity Of Resell Agreement Considered Cash Equivalents Minimum MaturityOfResellAgreementConsideredCashEquivalentsMinimum	P1D
CY2021	bokf	Maturity Of Resell Agreements Considered Cash Equivalents Maximum MaturityOfResellAgreementsConsideredCashEquivalentsMaximum	P30D
CY2021	bokf	Loans Number Of Days Past Due For Non Risk Graded Loan To Be Placed On Nonaccruing Status LoansNumberOfDaysPastDueForNonRiskGradedLoanToBePlacedOnNonaccruingStatus	P90D
CY2021	bokf	Loans Number Of Days After Notification Of Chapter7 Bankruptcy Non Risk Graded Loan Is Placed On Nonaccruing Status LoansNumberOfDaysAfterNotificationOfChapter7BankruptcyNonRiskGradedLoanIsPlacedOnNonaccruingStatus	P60D
CY2021	bokf	Minimum No Of Days After Which Past Due Non Risk Graded Loans Are Charged Off MinimumNoOfDaysAfterWhichPastDueNonRiskGradedLoansAreChargedOff	P60D
CY2021	bokf	Max No Of Days After Which Past Due Non Risk Graded Loans Are Charged Off MaxNoOfDaysAfterWhichPastDueNonRiskGradedLoansAreChargedOff	P180D
CY2021	bokf	Loans Number Of Days After Notification Of Chapter7 Bankruptcy Non Risk Graded Loan Is Charged Off LoansNumberOfDaysAfterNotificationOfChapter7BankruptcyNonRiskGradedLoanIsChargedOff	P60D
CY2021Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	9136813000	USD
CY2021Q4	bokf	Trading Securities Net Unrealized Gains Losses TradingSecuritiesNetUnrealizedGainsLosses	-9290000	USD
CY2020Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	4707975000	USD
CY2020Q4	bokf	Trading Securities Net Unrealized Gains Losses TradingSecuritiesNetUnrealizedGainsLosses	-3560000	USD
CY2021Q4	bokf	Debt Securities Heldtomaturitygross DebtSecuritiesHeldtomaturitygross	210999000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	231395000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	20412000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	16000	USD
CY2021Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	555000	USD
CY2021Q4	us-gaap	Debt Securities Held To Maturity Amortized Cost After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss	210444000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	231395000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	20412000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	16000	USD
CY2020Q4	bokf	Debt Securities Heldtomaturitygross DebtSecuritiesHeldtomaturitygross	245531000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	272431000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	27046000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	146000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	688000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Amortized Cost After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss	244843000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	272431000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	27046000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	146000	USD
CY2021Q4	bokf	Debt Securities Heldtomaturitygross DebtSecuritiesHeldtomaturitygross	210999000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	231395000	USD
CY2021Q4	us-gaap	Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions	3
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	273000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	2000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	587000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	14000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	860000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	16000	USD
CY2020Q4	us-gaap	Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions	8
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	2701000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	41000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	2068000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	105000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	4769000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	146000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	13064436000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	13157817000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	207361000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	113980000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	12609850000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	13050665000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	449654000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	8839000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	13064436000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	13157817000	USD
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	622881000	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	384507000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1211718000	USD
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	5702000	USD
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	9976000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	14996000	USD
CY2021	us-gaap	Debt Securities Available For Sale Realized Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedLossExcludingOtherThanTemporaryImpairment	1998000	USD
CY2020	us-gaap	Debt Securities Available For Sale Realized Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedLossExcludingOtherThanTemporaryImpairment	66000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedLossExcludingOtherThanTemporaryImpairment	9399000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	889000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	2524000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	1425000	USD
CY2021Q4	us-gaap	Pledged Assets Separately Reported Securities Pledged As Collateral At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedAsCollateralAtFairValue	10200000000	USD
CY2020Q4	us-gaap	Pledged Assets Separately Reported Securities Pledged As Collateral At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedAsCollateralAtFairValue	11600000000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	462
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	4911358000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	80372000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1476208000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	33608000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	6387566000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	113980000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	77
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1143562000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	8197000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	438846000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	642000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1582408000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	8839000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2021Q4	us-gaap	Loans Receivable With Fixed Rates Of Interest1 LoansReceivableWithFixedRatesOfInterest1	6603265000	USD
CY2021Q4	us-gaap	Loans Receivable With Variable Rates Of Interest1 LoansReceivableWithVariableRatesOfInterest1	13468356000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	134059000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	20205680000	USD
CY2020Q4	us-gaap	Loans Receivable With Fixed Rates Of Interest1 LoansReceivableWithFixedRatesOfInterest1	8078873000	USD
CY2020Q4	us-gaap	Loans Receivable With Variable Rates Of Interest1 LoansReceivableWithVariableRatesOfInterest1	14693954000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	234693000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	23007520000	USD
CY2021	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	14102000	USD
CY2020	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	22870000	USD
CY2021Q4	us-gaap	Unused Commitments To Extend Credit UnusedCommitmentsToExtendCredit	12500000000	USD
CY2021Q4	bokf	Outstanding Standby Letters Of Credit OutstandingStandbyLettersOfCredit	700000000	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
CY2020Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	36921000	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
CY2021	bokf	Change In Provision Due To Changes In Reasonable And Supportable Forecasts Primarily Due To Covid19 Pandemic ChangeInProvisionDueToChangesInReasonableAndSupportableForecastsPrimarilyDueToCOVID19Pandemic	-90100000	USD
CY2021	bokf	Other Changes To Provision OtherChangesToProvision	-9000000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	236568000	USD
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	222460000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	79399000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	9011000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	388640000	USD
CY2019Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	25137000	USD
CY2020	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	11784000	USD
CY2020Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	36921000	USD
CY2021Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	20071621000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	250079000	USD
CY2021Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	134059000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	6342000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	20205680000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	256421000	USD
CY2020Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	22772827000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	366199000	USD
CY2020Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	234693000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	22441000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	23007520000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	388640000	USD
CY2021Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	3678190000	USD
CY2021Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	2680781000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	2305870000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	1579560000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	1250651000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	3124953000	USD
CY2021Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	5559595000	USD
CY2021Q4	us-gaap	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	26080000	USD
CY2021Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	20205680000	USD
CY2020Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	4855463000	USD
CY2020Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	3161473000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	2651833000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	1788880000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	1356476000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	3054469000	USD
CY2020Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	6108767000	USD
CY2020Q4	us-gaap	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	30159000	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	23007520000	USD
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	134059000	USD
CY2021Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	114025000	USD
CY2021Q4	bokf	Financing Receivable Nonaccrual With Allowance FinancingReceivableNonaccrualWithAllowance	20034000	USD
CY2021Q4	bokf	Financing Receivable Nonaccrual Related Allowance FinancingReceivableNonaccrualRelatedAllowance	6343000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	234693000	USD
CY2020Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	167878000	USD
CY2020Q4	bokf	Financing Receivable Nonaccrual With Allowance FinancingReceivableNonaccrualWithAllowance	66815000	USD
CY2020Q4	bokf	Financing Receivable Nonaccrual Related Allowance FinancingReceivableNonaccrualRelatedAllowance	22441000	USD
CY2021Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	273000000	USD
CY2021Q4	bokf	Troubled Debt Financing Receivable Modification Performing According To Modified Terms TroubledDebtFinancingReceivableModificationPerformingAccordingToModifiedTerms	141000000	USD
CY2021	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	994000	USD
CY2020Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	187000000	USD
CY2020Q4	bokf	Troubled Debt Financing Receivable Modification Performing According To Modified Terms TroubledDebtFinancingReceivableModificationPerformingAccordingToModifiedTerms	95000000	USD
CY2020	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	20900000	USD
CY2021	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	121000000	USD
CY2020	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	83000000	USD
CY2021Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	20205680000	USD
CY2021Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	119132000	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	23007520000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	88718000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	207457000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	44205000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	50977000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	10074000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	210759000	USD
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1790000	USD
CY2019	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	-205000	USD
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1585000	USD
CY2019	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	44000000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	924298000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	843041000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	350150000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	291733000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	574148000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	551308000	USD
CY2021	us-gaap	Depreciation Depreciation	63400000	USD
CY2020	us-gaap	Depreciation Depreciation	54300000	USD
CY2019	us-gaap	Depreciation Depreciation	51600000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P10Y10M24D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.029
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	23800000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	24700000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	24300000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	23600000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	22600000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	130000000	USD
CY2021	us-gaap	Lease Cost LeaseCost	35800000	USD
CY2020	us-gaap	Lease Cost LeaseCost	42000000	USD
CY2019	us-gaap	Lease Cost LeaseCost	43000000	USD
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	23400000	USD
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	25000000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	24200000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	25300000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	25600000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	11500000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	13400000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	12600000	USD
CY2021	bokf	Credit Losses Recognized On Residential Mortgage Loans Held For Sale CreditLossesRecognizedOnResidentialMortgageLoansHeldForSale	0	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	91778000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	113436000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	15646000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	13770000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	11990000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	10876000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	9814000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	29682000	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	91778000	USD
CY2021	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	3342000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	1048091000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	1048091000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	1044749000	USD
CY2021Q4	bokf	Residential Mortgage Loans Held For Sale Unpaid Principal Balance Gross ResidentialMortgageLoansHeldForSaleUnpaidPrincipalBalanceGross	182710000	USD
CY2021Q4	bokf	Fair Valueof Residential Mortgage Loans Heldfor Sale FairValueofResidentialMortgageLoansHeldforSale	186175000	USD
CY2020Q4	bokf	Residential Mortgage Loans Held For Sale Unpaid Principal Balance Gross ResidentialMortgageLoansHeldForSaleUnpaidPrincipalBalanceGross	227161000	USD
CY2020Q4	bokf	Fair Valueof Residential Mortgage Loans Heldfor Sale FairValueofResidentialMortgageLoansHeldforSale	236444000	USD
CY2021Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	192295000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	252316000	USD
CY2020Q4	bokf	Residential Mortgage Loans Held For Sale Nonperforming ResidentialMortgageLoansHeldForSaleNonperforming	0	USD
CY2021Q4	bokf	Residential Mortgage Loans Held For Sale Nonperforming ResidentialMortgageLoansHeldForSaleNonperforming	0	USD
CY2021	bokf	Number Of Days For Past Due Residential Mortgage Loans Heldfor Sale NumberOfDaysForPastDueResidentialMortgageLoansHeldforSale	P90D
CY2020	bokf	Number Of Days For Past Due Residential Mortgage Loans Heldfor Sale NumberOfDaysForPastDueResidentialMortgageLoansHeldforSale	P90D
CY2020	bokf	Credit Losses Recognized On Residential Mortgage Loans Held For Sale CreditLossesRecognizedOnResidentialMortgageLoansHeldForSale	0	USD
CY2019	bokf	Credit Losses Recognized On Residential Mortgage Loans Held For Sale CreditLossesRecognizedOnResidentialMortgageLoansHeldForSale	0	USD
CY2021	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	76282000	USD
CY2020	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	107847000	USD
CY2019	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	39730000	USD
CY2021	bokf	Netchangeinunrealizedgainonmortgageloansheldforsale Netchangeinunrealizedgainonmortgageloansheldforsale	-5818000	USD
CY2020	bokf	Netchangeinunrealizedgainonmortgageloansheldforsale Netchangeinunrealizedgainonmortgageloansheldforsale	6697000	USD
CY2019	bokf	Netchangeinunrealizedgainonmortgageloansheldforsale Netchangeinunrealizedgainonmortgageloansheldforsale	672000	USD
CY2021	bokf	Changeinfairvalueofmortgageloancommitments Changeinfairvalueofmortgageloancommitments	-14268000	USD
CY2020	bokf	Changeinfairvalueofmortgageloancommitments Changeinfairvalueofmortgageloancommitments	15202000	USD
CY2019	bokf	Changeinfairvalueofmortgageloancommitments Changeinfairvalueofmortgageloancommitments	-145000	USD
CY2021	bokf	Changeinthefairvalueofforwardsalescommitments Changeinthefairvalueofforwardsalescommitments	4516000	USD
CY2020	bokf	Changeinthefairvalueofforwardsalescommitments Changeinthefairvalueofforwardsalescommitments	-3898000	USD
CY2019	bokf	Changeinthefairvalueofforwardsalescommitments Changeinthefairvalueofforwardsalescommitments	2463000	USD
CY2021	bokf	Mortgage Production Revenue MortgageProductionRevenue	60712000	USD
CY2020	bokf	Mortgage Production Revenue MortgageProductionRevenue	125848000	USD
CY2019	bokf	Mortgage Production Revenue MortgageProductionRevenue	42720000	USD
CY2021	bokf	Mortgage Servicing Fees MortgageServicingFees	45184000	USD
CY2020	bokf	Mortgage Servicing Fees MortgageServicingFees	56512000	USD
CY2019	bokf	Mortgage Servicing Fees MortgageServicingFees	64821000	USD
CY2021	bokf	Mortgage Banking Revenue MortgageBankingRevenue	105896000	USD
CY2020	bokf	Mortgage Banking Revenue MortgageBankingRevenue	182360000	USD
CY2019	bokf	Mortgage Banking Revenue MortgageBankingRevenue	107541000	USD
CY2021Q4	bokf	Residential Mortgage Loans Serviced Number Of Loans ResidentialMortgageLoansServicedNumberOfLoans	102008
CY2020Q4	bokf	Residential Mortgage Loans Serviced Number Of Loans ResidentialMortgageLoansServicedNumberOfLoans	106201
CY2019Q4	bokf	Residential Mortgage Loans Serviced Number Of Loans ResidentialMortgageLoansServicedNumberOfLoans	126828
CY2021Q4	bokf	Residential Mortgage Loans Serviced Outstanding Principal ResidentialMortgageLoansServicedOutstandingPrincipal	16442446000	USD
CY2020Q4	bokf	Residential Mortgage Loans Serviced Outstanding Principal ResidentialMortgageLoansServicedOutstandingPrincipal	16228449000	USD
CY2019Q4	bokf	Residential Mortgage Loans Serviced Outstanding Principal ResidentialMortgageLoansServicedOutstandingPrincipal	20727106000	USD
CY2021Q4	bokf	Weighted Average Interest Rateof Loans Servicedfor Others WeightedAverageInterestRateofLoansServicedforOthers	0.0358
CY2020Q4	bokf	Weighted Average Interest Rateof Loans Servicedfor Others WeightedAverageInterestRateofLoansServicedforOthers	0.0384
CY2019Q4	bokf	Weighted Average Interest Rateof Loans Servicedfor Others WeightedAverageInterestRateofLoansServicedforOthers	0.0398
CY2021	bokf	Residential Mortgage Loans Serviced Weighted Average Remaining Term ResidentialMortgageLoansServicedWeightedAverageRemainingTerm	P281M
CY2020	bokf	Residential Mortgage Loans Serviced Weighted Average Remaining Term ResidentialMortgageLoansServicedWeightedAverageRemainingTerm	P280M
CY2019	bokf	Residential Mortgage Loans Serviced Weighted Average Remaining Term ResidentialMortgageLoansServicedWeightedAverageRemainingTerm	P289M
CY2018Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	259254000	USD
CY2019	us-gaap	Servicing Asset At Fair Value Additions ServicingAssetAtFairValueAdditions	35128000	USD
CY2019	bokf	Change In Fair Value Due To Loan Runoff ChangeInFairValueDueToLoanRunoff	-38979000	USD
CY2019	us-gaap	Asset At Fair Value Changes In Fair Value Resulting From Changes In Assumptions AssetAtFairValueChangesInFairValueResultingFromChangesInAssumptions	-53517000	USD
CY2019Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	201886000	USD
CY2020	us-gaap	Servicing Asset At Fair Value Additions ServicingAssetAtFairValueAdditions	31209000	USD
CY2020	us-gaap	Servicing Asset At Fair Value Disposals ServicingAssetAtFairValueDisposals	10801000	USD
CY2020	bokf	Change In Fair Value Due To Loan Runoff ChangeInFairValueDueToLoanRunoff	-41598000	USD
CY2020	us-gaap	Asset At Fair Value Changes In Fair Value Resulting From Changes In Assumptions AssetAtFairValueChangesInFairValueResultingFromChangesInAssumptions	-79524000	USD
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	bokf	Change In Fair Value Due To Loan Runoff ChangeInFairValueDueToLoanRunoff	-38761000	USD
CY2021	us-gaap	Asset At Fair Value Changes In Fair Value Resulting From Changes In Assumptions AssetAtFairValueChangesInFairValueResultingFromChangesInAssumptions	41637000	USD
CY2021Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	163198000	USD
CY2021	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Discount Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate	0.0839
CY2020	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Discount Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate	0.0914
CY2021	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Prepayment Speed ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed	0.1211
CY2020	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Prepayment Speed ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed	0.1973
CY2021	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Performing Loan Service Cost Minimum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePerformingLoanServiceCostMinimum	69	USD
CY2021	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Performing Loan Service Cost Maximum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePerformingLoanServiceCostMaximum	94	USD
CY2020	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Performing Loan Service Cost Minimum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePerformingLoanServiceCostMinimum	69	USD
CY2020	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Performing Loan Service Cost Maximum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePerformingLoanServiceCostMaximum	94	USD
CY2021	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Delinquent Loan Service Cost Minimum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueDelinquentLoanServiceCostMinimum	150	USD
CY2021	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Delinquent Loan Svc Cost Maximum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueDelinquentLoanSvcCostMaximum	500	USD
CY2020	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Delinquent Loan Service Cost Minimum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueDelinquentLoanServiceCostMinimum	150	USD
CY2020	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Delinquent Loan Svc Cost Maximum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueDelinquentLoanSvcCostMaximum	500	USD
CY2021	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Foreclosure Loan Service Cost Minimum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueForeclosureLoanServiceCostMinimum	1000	USD
CY2021	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Foreclosure Loan Service Cost Maximum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueForeclosureLoanServiceCostMaximum	4000	USD
CY2020	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Foreclosure Loan Service Cost Minimum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueForeclosureLoanServiceCostMinimum	1000	USD
CY2020	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Foreclosure Loan Service Cost Maximum ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueForeclosureLoanServiceCostMaximum	4000	USD
CY2021Q4	bokf	Primarysecondarymortgageratespread Primarysecondarymortgageratespread	105
CY2020Q4	bokf	Primarysecondarymortgageratespread Primarysecondarymortgageratespread	105
CY2021	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Escrow Earnings Rate ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueEscrowEarningsRate	0.0132
CY2020	bokf	Servicing Assets At Fair Value Assumptions Used To Estimate Fair Value Escrow Earnings Rate ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueEscrowEarningsRate	0.0043
CY2021	bokf	Servicing Assetsand Servicing Liabilitiesat Fair Value Assumptions Usedto Estimate Fair Value Delinquency Rate ServicingAssetsandServicingLiabilitiesatFairValueAssumptionsUsedtoEstimateFairValueDelinquencyRate	0.0205
CY2020	bokf	Servicing Assetsand Servicing Liabilitiesat Fair Value Assumptions Usedto Estimate Fair Value Delinquency Rate ServicingAssetsandServicingLiabilitiesatFairValueAssumptionsUsedtoEstimateFairValueDelinquencyRate	0.0354
CY2021	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	21961000	USD
CY2020	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	60424000	USD
CY2019	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	132854000	USD
CY2021	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	374000	USD
CY2020	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	385000	USD
CY2019	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	677000	USD
CY2021	us-gaap	Interest Expense Time Deposits Less Than100000 InterestExpenseTimeDepositsLessThan100000	2961000	USD
CY2020	us-gaap	Interest Expense Time Deposits Less Than100000 InterestExpenseTimeDepositsLessThan100000	6741000	USD
CY2019	us-gaap	Interest Expense Time Deposits Less Than100000 InterestExpenseTimeDepositsLessThan100000	8299000	USD
CY2021	us-gaap	Interest Expense Time Deposits100000 Or More InterestExpenseTimeDeposits100000OrMore	4719000	USD
CY2020	us-gaap	Interest Expense Time Deposits100000 Or More InterestExpenseTimeDeposits100000OrMore	18270000	USD
CY2019	us-gaap	Interest Expense Time Deposits100000 Or More InterestExpenseTimeDeposits100000OrMore	29288000	USD
CY2021	bokf	Interest Expense On Other Time Deposits InterestExpenseOnOtherTimeDeposits	3469000	USD
CY2020	bokf	Interest Expense On Other Time Deposits InterestExpenseOnOtherTimeDeposits	4176000	USD
CY2019	bokf	Interest Expense On Other Time Deposits InterestExpenseOnOtherTimeDeposits	4420000	USD
CY2021	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	11149000	USD
CY2020	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	29187000	USD
CY2019	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	42007000	USD
CY2021	us-gaap	Interest Expense Deposits InterestExpenseDeposits	33484000	USD
CY2020	us-gaap	Interest Expense Deposits InterestExpenseDeposits	89996000	USD
CY2019	us-gaap	Interest Expense Deposits InterestExpenseDeposits	175538000	USD
CY2021Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	828000000	USD
CY2020Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	815000000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	1300000000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	156000000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	54000000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	39000000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	82000000	USD
CY2021Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	25000000	USD
CY2021Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	3400000	USD
CY2020Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	3100000	USD
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	2494428000	USD
CY2021	bokf	Debt Average Balance DebtAverageBalance	5062621000	USD
CY2021	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.0056
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	3821361000	USD
CY2020	bokf	Debt Average Balance DebtAverageBalance	8570959000	USD
CY2020	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.0082
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	8621328000	USD
CY2019	bokf	Debt Average Balance DebtAverageBalance	10261592000	USD
CY2019	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.0237
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	2343341000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	3378000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	3498000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	3622000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	3752000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	136837000	USD
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	2494428000	USD
CY2021	us-gaap	Schedule Of Repurchase Agreements ScheduleOfRepurchaseAgreements	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Additional information relating to securities sold under agreements to repurchase and related liabilities at December 31, 2021 and 2020 is as follows (dollars in thousands):</span></div><div style="margin-top:5pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:99.561%"><tr><td style="width:1.0%"/><td style="width:52.350%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.534%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:9.913%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.534%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:9.619%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.534%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:10.647%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.534%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:9.035%"/><td style="width:0.1%"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="padding:0 1pt"/><td colspan="21" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">December 31, 2021</span></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Amortized</span></td><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Fair</span></td><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Repurchase</span></td><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Security Sold/Maturity</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Cost</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Value</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Liability</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:5.85pt;font-weight:700;line-height:100%;position:relative;top:-3.15pt;vertical-align:baseline">1</span></div></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Rate</span></td></tr><tr style="height:14pt"><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">U.S. government agency mortgage-backed securities:</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="padding-left:6.75pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Overnight</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:5.85pt;font-weight:400;line-height:100%;position:relative;top:-3.15pt;vertical-align:baseline">1</span></div></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">$</span></td><td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">907,154</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">$</span></td><td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">902,507</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">$</span></td><td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">884,936</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">0.08</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">%</span></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="padding-left:6.75pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Less than 30 days</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:5.85pt;font-weight:400;line-height:100%;position:relative;top:-3.15pt;vertical-align:baseline">2</span></div></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">N/A</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">1,242,000</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">1,242,000</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">1.50</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">%</span></td></tr><tr><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Total Agency Securities</span></td><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"/><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">$</span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">907,154</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"/><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">$</span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">2,144,507</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"/><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">$</span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">2,126,936</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">1.58</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">%</span></td></tr><tr style="height:14pt"><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="padding:0 1pt"/><td colspan="21" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">December 31, 2020</span></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Amortized</span></td><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Fair</span></td><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Repurchase</span></td><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Security Sold/Maturity</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Cost</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Value</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Liability</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:5.85pt;font-weight:700;line-height:100%;position:relative;top:-3.15pt;vertical-align:baseline">1</span></div></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Rate</span></td></tr><tr style="height:14pt"><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #000000;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">U.S. government agency mortgage-backed securities:</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="padding-left:6.75pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Overnight</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:5.85pt;font-weight:400;line-height:100%;position:relative;top:-3.15pt;vertical-align:baseline">1</span></div></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">893,069 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">910,885 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">893,021 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">0.09 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">%</span></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 7.75pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Less than 30 days</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">%</span></td></tr><tr><td colspan="3" style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Total Agency Securities</span></td><td colspan="3" style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"/><td style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">893,069 </span></td><td style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"/><td style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">910,885 </span></td><td style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"/><td style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">893,021 </span></td><td style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">0.09 </span></td><td style="background-color:#ffffff;border-bottom:2pt solid #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">%</span></td></tr></table></div><div style="padding-left:9pt;text-indent:-9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:5.2pt;font-weight:400;line-height:120%;position:relative;top:-2.8pt;vertical-align:baseline">1</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%">BOK Financial maintains control over the securities underlying overnight repurchase agreements and generally transfers control over securities underlying longer-term dealer repurchase agreements to the respective counterparty.</span></div><div style="padding-left:9pt;text-indent:-9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:5.2pt;font-weight:400;line-height:120%;position:relative;top:-2.8pt;vertical-align:baseline">2</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%"> Trading position.</span></div>
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	67339000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	101265000	USD
CY2021Q4	bokf	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	48457000	USD
CY2020Q4	bokf	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	44794000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	33945000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	29504000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	11368000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	14584000	USD
CY2021Q4	bokf	Deferred Tax Assets Purchased Loan Discount DeferredTaxAssetsPurchasedLoanDiscount	7498000	USD
CY2020Q4	bokf	Deferred Tax Assets Purchased Loan Discount DeferredTaxAssetsPurchasedLoanDiscount	11537000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	5989000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	6525000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	1883000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	3834000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	28958000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	29963000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	205437000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	242006000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	21841000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	105769000	USD
CY2021Q4	bokf	Deferred Tax Liabilities Rightof Use Asset DeferredTaxLiabilitiesRightofUseAsset	41291000	USD
CY2020Q4	bokf	Deferred Tax Liabilities Rightof Use Asset DeferredTaxLiabilitiesRightofUseAsset	38635000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	31703000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	24182000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	14307000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	18138000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	10939000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	13754000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	11120000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	11828000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	39698000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	39210000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	170899000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	251516000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	34538000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	9510000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	121196000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	173888000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	110887000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	21065000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	29889000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	15088000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	142261000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	203777000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	125975000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	29777000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-65989000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	3416000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	7737000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-8995000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	792000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	37514000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-74984000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4208000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	179775000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	128793000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	130183000	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	167181000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	118412000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	132482000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	6084000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	7035000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	12227000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	22489000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	14251000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	12715000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	8801000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	6994000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	5127000	USD
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	4990000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	10159000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2340000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	179775000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	128793000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	130183000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.007
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.012
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.019
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.028
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.025
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.020
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	0.011
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	0.012
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	0.008
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.006
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.017
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.003
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.226
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.228
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.206
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	22902000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	20465000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	18869000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	5900000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3961000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	6384000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	5649000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1754000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	4017000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	3947000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	4053000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	21092000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	22902000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	20465000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	16400000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	2300000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	2400000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	2200000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	6400000	USD
CY2021	bokf	Unrecognized Tax Benefits Numberof Reporting Periods Openfor Examination Federal UnrecognizedTaxBenefitsNumberofReportingPeriodsOpenforExaminationFederal	3
CY2021	bokf	Unrecognized Tax Benefits Numberof Reporting Periods Openfor Examination State Minimum UnrecognizedTaxBenefitsNumberofReportingPeriodsOpenforExaminationStateMinimum	3
CY2021	bokf	Unrecognized Tax Benefits Numberof Reporting Periods Openfor Examination State Maximum UnrecognizedTaxBenefitsNumberofReportingPeriodsOpenforExaminationStateMaximum	6
CY2021Q4	bokf	Mutual Funds Managed Net Asset Value Of Units In Mutual Funds MutualFundsManagedNetAssetValueOfUnitsInMutualFunds	1.00
CY2021Q4	bokf	Mutual Funds Managed Net Asset Value Of Units In Mutual Funds MutualFundsManagedNetAssetValueOfUnitsInMutualFunds	1.00
CY2020	bokf	Assets Purchased From Mutual Funds Managed AssetsPurchasedFromMutualFundsManaged	0	USD
CY2021	bokf	Assets Purchased From Mutual Funds Managed AssetsPurchasedFromMutualFundsManaged	0	USD
CY2021	bokf	Minimum Average Cash Balance Required To Be Maintained At Federal Reserve By Subsidiary Bank MinimumAverageCashBalanceRequiredToBeMaintainedAtFederalReserveBySubsidiaryBank	905000000	USD
CY2020	bokf	Minimum Average Cash Balance Required To Be Maintained At Federal Reserve By Subsidiary Bank MinimumAverageCashBalanceRequiredToBeMaintainedAtFederalReserveBySubsidiaryBank	727000000	USD
CY2021Q4	bokf	Common Equity Tier One Capitalto Risk Weighted Assets Minimum Requirement CommonEquityTierOneCapitaltoRiskWeightedAssetsMinimumRequirement	0.0450
CY2020Q4	bokf	Common Equity Tier One Capitalto Risk Weighted Assets Minimum Requirement CommonEquityTierOneCapitaltoRiskWeightedAssetsMinimumRequirement	0.0450
CY2021Q4	bokf	Capital Conservation Buffer Common Equity Tier Oneto Risk Weighted Assets CapitalConservationBufferCommonEquityTierOnetoRiskWeightedAssets	0.0250
CY2020Q4	bokf	Capital Conservation Buffer Common Equity Tier Oneto Risk Weighted Assets CapitalConservationBufferCommonEquityTierOnetoRiskWeightedAssets	0.0250
CY2021Q4	bokf	Minimum Capital Requirement Including Capital Conservation Buffer Commonequity Tier Oneto Risk Weighted Assets MinimumCapitalRequirementIncludingCapitalConservationBufferCommonequityTierOnetoRiskWeightedAssets	0.0700
CY2020Q4	bokf	Minimum Capital Requirement Including Capital Conservation Buffer Commonequity Tier Oneto Risk Weighted Assets MinimumCapitalRequirementIncludingCapitalConservationBufferCommonequityTierOnetoRiskWeightedAssets	0.0700
CY2021Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	4230626000	USD
CY2021Q4	us-gaap	Common Equity Tier One Capital Ratio CommonEquityTierOneCapitalRatio	0.1224
CY2020Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	3881912000	USD
CY2020Q4	us-gaap	Common Equity Tier One Capital Ratio CommonEquityTierOneCapitalRatio	0.1195
CY2020Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600
CY2021Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600
CY2021Q4	bokf	Capital Conservation Buffer Tier1 Capitalto Risk Weighted Assets CapitalConservationBufferTier1CapitaltoRiskWeightedAssets	0.0250
CY2020Q4	bokf	Capital Conservation Buffer Tier1 Capitalto Risk Weighted Assets CapitalConservationBufferTier1CapitaltoRiskWeightedAssets	0.0250
CY2020Q4	bokf	Minimum Capital Requirement Including Capital Conservation Buffer Tier Oneto Risk Weighted Assets MinimumCapitalRequirementIncludingCapitalConservationBufferTierOnetoRiskWeightedAssets	0.0850
CY2021Q4	bokf	Minimum Capital Requirement Including Capital Conservation Buffer Tier Oneto Risk Weighted Assets MinimumCapitalRequirementIncludingCapitalConservationBufferTierOnetoRiskWeightedAssets	0.0850
CY2021Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	4235265000	USD
CY2021Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1225
CY2020Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	3881912000	USD
CY2020Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1195
CY2020Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2021Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2020Q4	bokf	Capital Conservation Buffer Total Capitalto Risk Weighted Assets CapitalConservationBufferTotalCapitaltoRiskWeightedAssets	0.0250
CY2021Q4	bokf	Capital Conservation Buffer Total Capitalto Risk Weighted Assets CapitalConservationBufferTotalCapitaltoRiskWeightedAssets	0.0250
CY2021Q4	bokf	Minimum Capital Requirement Including Capital Conservation Bufferfor Total Capitalto Risk Weighted Assets MinimumCapitalRequirementIncludingCapitalConservationBufferforTotalCapitaltoRiskWeightedAssets	0.1050
CY2020Q4	bokf	Minimum Capital Requirement Including Capital Conservation Bufferfor Total Capitalto Risk Weighted Assets MinimumCapitalRequirementIncludingCapitalConservationBufferforTotalCapitaltoRiskWeightedAssets	0.1050
CY2021Q4	us-gaap	Capital Capital	4594787000	USD
CY2021Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1329
CY2020Q4	us-gaap	Capital Capital	4489110000	USD
CY2020Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1382
CY2020Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2021Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2021Q4	bokf	Minimum Capital Requirements Including Capital Conservation Buffer Tier One Capitalto Average Assets MinimumCapitalRequirementsIncludingCapitalConservationBufferTierOneCapitaltoAverageAssets	0.0400
CY2020Q4	bokf	Minimum Capital Requirements Including Capital Conservation Buffer Tier One Capitalto Average Assets MinimumCapitalRequirementsIncludingCapitalConservationBufferTierOneCapitaltoAverageAssets	0.0400
CY2021Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	4235265000	USD
CY2021Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0855
CY2020Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	3881912000	USD
CY2020Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0828
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-72585000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	241047000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	5597000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	235450000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	57942000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	177508000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	104923000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	230945000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	313796000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	9910000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	303886000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	72941000	USD
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
CY2021	us-gaap	Net Income Loss NetIncomeLoss	618121000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	435030000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	500758000	USD
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	4299000	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	2612000	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	3227000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	613822000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	432418000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	497531000	USD
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	613822000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	432418000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	497531000	USD
CY2021	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	69071511	shares
CY2020	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	70259553	shares
CY2019	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	71250081	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	479591	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	418576	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	462381	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	68591920	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	69840977	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	70787700	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2402	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3195	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	14912	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	68594322	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	69844172	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	70802612	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.95
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.19
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.03
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.95
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.19
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.03
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
CY2020	bokf	Nir Expense From External Sources NirExpenseFromExternalSources	1108444000	USD
CY2020	bokf	Ni Rexpensefrominternalsources NIRexpensefrominternalsources	0	USD
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1108444000	USD
CY2020	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	222592000	USD
CY2020	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	885852000	USD
CY2020	us-gaap	Noninterest Income NoninterestIncome	842320000	USD
CY2020	us-gaap	Noninterest Expense NoninterestExpense	1164308000	USD
CY2020	bokf	Netdirectcontribution Netdirectcontribution	563864000	USD
CY2020	bokf	Gain Losson Financial Instruments Net GainLossonFinancialInstrumentsNet	0	USD
CY2020	bokf	Segment Reporting Changein Fair Valueof Mortgage Servicing Rights SegmentReportingChangeinFairValueofMortgageServicingRights	0	USD
CY2020	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	0	USD
CY2020	bokf	Corporate Expense Allocations CorporateExpenseAllocations	0	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	563864000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	128793000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	435071000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	41000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	435030000	USD
CY2020	bokf	Average Assets For Reporting Period AverageAssetsForReportingPeriod	48704390000	USD
CY2019	bokf	Nir Expense From External Sources NirExpenseFromExternalSources	1112879000	USD
CY2019	bokf	Ni Rexpensefrominternalsources NIRexpensefrominternalsources	0	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1112879000	USD
CY2019	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	44000000	USD
CY2019	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	1068879000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	695233000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	1133244000	USD
CY2019	bokf	Netdirectcontribution Netdirectcontribution	630868000	USD
CY2019	bokf	Gain Losson Financial Instruments Net GainLossonFinancialInstrumentsNet	0	USD
CY2019	bokf	Segment Reporting Changein Fair Valueof Mortgage Servicing Rights SegmentReportingChangeinFairValueofMortgageServicingRights	0	USD
CY2019	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	0	USD
CY2019	bokf	Corporate Expense Allocations CorporateExpenseAllocations	0	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	630868000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	130183000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	500685000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-73000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	500758000	USD
CY2019	bokf	Average Assets For Reporting Period AverageAssetsForReportingPeriod	42094347000	USD

Files In Submission

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$BOKF
BOK FINANCIAL CORP Stock $bokf

2021 Q4 Form 10-K Financial Statement

#000087535722000013 Filed on February 23, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BOKF BOK FINANCIAL CORP Stock $bokf

2021 Q4 Form 10-K Financial Statement

#000087535722000013 Filed on February 23, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BOKF
BOK FINANCIAL CORP Stock $bokf