$CBSH
COMMERCE BANCSHARES INC /MO/ Stock $cbsh

$cbsh Overview Financials Valuation SEC Filings Company Website

2023 Q2 Form 10-Q Financial Statement

#000002235623000037 Filed on May 04, 2023

Income Statement

Concept	2023 Q2	2023 Q1
Revenue	$348.7M	$0.00
YoY Change
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$12.60M	$11.57M
YoY Change	6.53%	-2.08%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$99.13M	$57.23M
YoY Change	1618.24%	1810.35%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$166.5M	$153.4M
YoY Change	9.38%	0.95%
Income Tax	$35.99M	$32.81M
% Of Pretax Income	21.62%	21.4%
Net Earnings	$127.8M	$119.5M
YoY Change	10.36%	1.1%
Net Earnings / Revenue	36.65%
Basic Earnings Per Share	$1.03	$0.95
Diluted Earnings Per Share	$1.02	$0.95
COMMON SHARES
Basic Shares Outstanding	124.7M shares	124.8M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2023 Q2	2023 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$2.938B	$1.720B
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	$451.6M	$428.2M
YoY Change	13.49%	8.66%
Goodwill	$146.4M	$138.9M
YoY Change	5.36%	0.0%
Intangibles	$14.67M	$14.92M
YoY Change	-7.49%	-6.09%
Long-Term Investments	$0.00	$0.00
YoY Change	-100.0%	-100.0%
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$32.83B	$32.00B
YoY Change	-1.81%	-8.52%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$2.878B	$2.785B
YoY Change	28.81%	20.18%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$2.878B	$2.785B
YoY Change	28.81%	20.18%
LONG-TERM LIABILITIES
Long-Term Debt	$1.006B	$1.508B
YoY Change	16590.67%	16653.07%
Other Long-Term Liabilities	$393.0M	$346.6M
YoY Change	12.76%	-5.8%
Total Long-Term Liabilities	$1.399B	$1.854B
YoY Change	294.49%	391.89%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.878B	$2.785B
Total Long-Term Liabilities	$1.399B	$1.854B
Total Liabilities	$30.15B	$29.32B
YoY Change	-2.0%	-8.41%
SHAREHOLDERS EQUITY
Retained Earnings	$211.4M	$117.3M
YoY Change	-19.44%	-34.28%
Common Stock	$629.3M	$629.3M
YoY Change	3.03%	3.03%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$58.39M	$59.67M
YoY Change	-54.94%	-17.46%
Treasury Stock Shares
Shareholders Equity	$2.667B	$2.666B
YoY Change
Total Liabilities & Shareholders Equity	$32.83B	$32.00B
YoY Change	-1.81%	-8.52%

Cashflow Statement

Concept	2023 Q2	2023 Q1
OPERATING ACTIVITIES
Net Income	$127.8M	$119.5M
YoY Change	10.36%	1.1%
Depreciation, Depletion And Amortization	$12.60M	$11.57M
YoY Change	6.53%	-2.08%
Cash From Operating Activities	$104.8M	$116.1M
YoY Change	-35.15%	-6.79%
INVESTING ACTIVITIES
Capital Expenditures	$31.86M	$20.04M
YoY Change	-337.97%	28.51%
Acquisitions
YoY Change
Other Investing Activities	$284.5M	$908.3M
YoY Change	-60.58%	-160.87%
Cash From Investing Activities	$252.6M	$888.2M
YoY Change	-64.33%	-158.91%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	860.8M	-$182.0M
YoY Change	-161.33%	-86.09%
NET CHANGE
Cash From Operating Activities	104.8M	$116.1M
Cash From Investing Activities	252.6M	$888.2M
Cash From Financing Activities	860.8M	-$182.0M
Net Change In Cash	1.218B	$822.3M
YoY Change	-328.27%	-130.55%
FREE CASH FLOW
Cash From Operating Activities	$104.8M	$116.1M
Capital Expenditures	$31.86M	$20.04M
Free Cash Flow	$72.97M	$96.01M
YoY Change	-58.31%	-11.85%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000022356
CY2023Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2023Q1	dei	Amendment Flag AmendmentFlag	false
CY2023Q1	cbsh	Purchase Of Risk Participation Agreement PurchaseOfRiskParticipationAgreement	0	usd
CY2022Q1	cbsh	Investment Securities Called InvestmentSecuritiesCalled	0	usd
CY2023Q1	cbsh	Mortgage Servicing Rights Nonrecurring Basis MortgageServicingRightsNonrecurringBasis	0	usd
CY2023Q1	cbsh	Mortgage Servicing Rights Nonrecurring Basis Gains Losses MortgageServicingRightsNonrecurringBasisGainsLosses	0	usd
CY2023Q1	cbsh	Long Lived Assets Nonrecurring Basis LongLivedAssetsNonrecurringBasis	0	usd
CY2023Q1	cbsh	Long Lived Assets Nonrecurring Basis Gains Losses LongLivedAssetsNonrecurringBasisGainsLosses	0	usd
CY2022Q1	cbsh	Loans Nonrecurring Basis LoansNonrecurringBasis	0	usd
CY2022Q1	cbsh	Loans Nonrecurring Basis Gains Losses LoansNonrecurringBasisGainsLosses	0	usd
CY2023Q1	dei	Document Type DocumentType	10-Q
CY2023Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2023Q1	dei	Document Period End Date DocumentPeriodEndDate	2023-03-31
CY2023Q1	dei	Entity Small Business EntitySmallBusiness	false
CY2023Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2023Q1	dei	Entity File Number EntityFileNumber	001-36502
CY2023Q1	dei	Entity Registrant Name EntityRegistrantName	COMMERCE BANCSHARES, INC.
CY2023Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MO
CY2023Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	43-0889454
CY2023Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	1000 Walnut
CY2023Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	Kansas City,
CY2023Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	MO
CY2023Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	64106
CY2023Q1	dei	City Area Code CityAreaCode	816
CY2023Q1	dei	Local Phone Number LocalPhoneNumber	234-2000
CY2023Q1	dei	Security12b Title Security12bTitle	$5 Par Value Common Stock
CY2023Q1	dei	Trading Symbol TradingSymbol	CBSH
CY2023Q1	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2023Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023Q1	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023Q1	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	124717779	shares
CY2023Q1	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	16535522000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	16303131000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	159317000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	150136000	usd
CY2023Q1	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	16376205000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	16152995000	usd
CY2023Q1	us-gaap	Mortgages Held For Sale Fair Value Disclosure MortgagesHeldForSaleFairValueDisclosure	684000	usd
CY2022Q4	us-gaap	Mortgages Held For Sale Fair Value Disclosure MortgagesHeldForSaleFairValueDisclosure	0	usd
CY2023Q1	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	6162000	usd
CY2022Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	4964000	usd
CY2023Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	12538550000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	13738206000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	usd
CY2023Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	11228616000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	12238316000	usd
CY2023Q1	us-gaap	Trading Securities TradingSecurities	41584000	usd
CY2022Q4	us-gaap	Trading Securities TradingSecurities	43523000	usd
CY2023Q1	us-gaap	Equity Securities Fv Ni And Without Readily Determinable Fair Value EquitySecuritiesFvNiAndWithoutReadilyDeterminableFairValue	12528000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni And Without Readily Determinable Fair Value EquitySecuritiesFvNiAndWithoutReadilyDeterminableFairValue	12304000	usd
CY2023Q1	cbsh	Other Securities OtherSecurities	268417000	usd
CY2022Q4	cbsh	Other Securities OtherSecurities	225034000	usd
CY2023Q1	cbsh	Total Investment Securities TotalInvestmentSecurities	11551145000	usd
CY2022Q4	cbsh	Total Investment Securities TotalInvestmentSecurities	12519177000	usd
CY2023Q1	us-gaap	Federal Funds Sold And Securities Purchased Under Agreements To Resell FederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	27060000	usd
CY2022Q4	us-gaap	Federal Funds Sold And Securities Purchased Under Agreements To Resell FederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	49505000	usd
CY2023Q1	cbsh	Long Term Securities Purchased Under Agreements To Resell LongTermSecuritiesPurchasedUnderAgreementsToResell	825000000	usd
CY2022Q4	cbsh	Long Term Securities Purchased Under Agreements To Resell LongTermSecuritiesPurchasedUnderAgreementsToResell	825000000	usd
CY2023Q1	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	1341854000	usd
CY2022Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	389140000	usd
CY2023Q1	us-gaap	Cash And Due From Banks CashAndDueFromBanks	351210000	usd
CY2022Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	452496000	usd
CY2023Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	428169000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	418909000	usd
CY2023Q1	us-gaap	Goodwill Goodwill	138921000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	138921000	usd
CY2023Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	14918000	usd
CY2022Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	15234000	usd
CY2023Q1	us-gaap	Other Assets OtherAssets	944212000	usd
CY2022Q4	us-gaap	Other Assets OtherAssets	909590000	usd
CY2023Q1	us-gaap	Assets Assets	32004856000	usd
CY2022Q4	us-gaap	Assets Assets	31875931000	usd
CY2023Q1	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	8685234000	usd
CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	10066356000	usd
CY2023Q1	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	14419741000	usd
CY2022Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	15126981000	usd
CY2023Q1	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	468667000	usd
CY2022Q4	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	387336000	usd
CY2023Q1	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	1109818000	usd
CY2022Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	606767000	usd
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CY2022Q4	us-gaap	Deposits Deposits	26187440000	usd
CY2023Q1	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	2784559000	usd
CY2022Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	2841734000	usd
CY2023Q1	us-gaap	Other Borrowings OtherBorrowings	1507776000	usd
CY2022Q4	us-gaap	Other Borrowings OtherBorrowings	9672000	usd
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CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	355508000	usd
CY2023Q1	us-gaap	Liabilities Liabilities	29322444000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	29394354000	usd
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2023Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2023Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	140000000	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	140000000	shares
CY2023Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	125863879	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	125863879	shares
CY2023Q1	us-gaap	Common Stock Value CommonStockValue	629319000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	629319000	usd
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CY2022Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	605142	shares
CY2023Q1	us-gaap	Treasury Stock Value TreasuryStockValue	59670000	usd
CY2022Q4	us-gaap	Treasury Stock Value TreasuryStockValue	41743000	usd
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CY2022Q1	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	682000	usd
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CY2022Q1	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	1000	usd
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CY2023Q1	us-gaap	Interest Expense Time Deposits Less Than100000 InterestExpenseTimeDepositsLessThan100000	1425000	usd
CY2022Q1	us-gaap	Interest Expense Time Deposits Less Than100000 InterestExpenseTimeDepositsLessThan100000	139000	usd
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CY2022Q1	cbsh	Trustfeerevenue Trustfeerevenue	47811000	usd
CY2023Q1	cbsh	Bank Card Transaction Fees BankCardTransactionFees	46654000	usd
CY2022Q1	cbsh	Bank Card Transaction Fees BankCardTransactionFees	42045000	usd
CY2023Q1	cbsh	Depositfeerevenue Depositfeerevenue	21752000	usd
CY2022Q1	cbsh	Depositfeerevenue Depositfeerevenue	22307000	usd
CY2023Q1	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	5085000	usd
CY2022Q1	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	4446000	usd
CY2023Q1	us-gaap	Noninterest Income Other NoninterestIncomeOther	3362000	usd
CY2022Q1	us-gaap	Noninterest Income Other NoninterestIncomeOther	4125000	usd
CY2023Q1	cbsh	Loan Fees And Sales LoanFeesAndSales	2589000	usd
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CY2022Q1	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	6800000	usd
CY2023Q1	us-gaap	Noninterest Income NoninterestIncome	137612000	usd
CY2022Q1	us-gaap	Noninterest Income NoninterestIncome	131769000	usd
CY2023Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	-306000	usd
CY2022Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	7163000	usd
CY2023Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	144373000	usd
CY2022Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	135953000	usd
CY2023Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	28154000	usd
CY2022Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	27016000	usd
CY2023Q1	us-gaap	Occupancy Net OccupancyNet	12759000	usd
CY2022Q1	us-gaap	Occupancy Net OccupancyNet	12296000	usd
CY2023Q1	us-gaap	Equipment Expense EquipmentExpense	4850000	usd
CY2022Q1	us-gaap	Equipment Expense EquipmentExpense	4568000	usd
CY2023Q1	cbsh	Supplies Postage And Communication SuppliesPostageAndCommunication	4590000	usd
CY2022Q1	cbsh	Supplies Postage And Communication SuppliesPostageAndCommunication	4713000	usd
CY2023Q1	us-gaap	Marketing Expense MarketingExpense	5471000	usd
CY2022Q1	us-gaap	Marketing Expense MarketingExpense	6344000	usd
CY2023Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	23910000	usd
CY2022Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	14758000	usd
CY2023Q1	us-gaap	Noninterest Expense NoninterestExpense	224107000	usd
CY2022Q1	us-gaap	Noninterest Expense NoninterestExpense	205648000	usd
CY2023Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	153366000	usd
CY2022Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	151928000	usd
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32813000	usd
CY2022Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31902000	usd
CY2023Q1	us-gaap	Profit Loss ProfitLoss	120553000	usd
CY2022Q1	us-gaap	Profit Loss ProfitLoss	120026000	usd
CY2023Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1101000	usd
CY2022Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1872000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	119452000	usd
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	118154000	usd
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.95
CY2022Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.92
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.95
CY2022Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.92
CY2023Q1	us-gaap	Profit Loss ProfitLoss	120553000	usd
CY2022Q1	us-gaap	Profit Loss ProfitLoss	120026000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	142466000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-507265000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-270000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-323000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	3630000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-4538000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	146366000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-511480000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	266919000	usd
CY2022Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-391454000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1101000	usd
CY2022Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1872000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	265818000	usd
CY2022Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-393326000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2481577000	usd
CY2023Q1	us-gaap	Profit Loss ProfitLoss	120553000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	146366000	usd
CY2023Q1	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	453000	usd
CY2023Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	36245000	usd
CY2023Q1	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	0	usd
CY2023Q1	cbsh	Stock Issued During Period Rs As And Sa Rs StockIssuedDuringPeriodRSAsAndSARs	0	usd
CY2023Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4373000	usd
CY2023Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.270
CY2023Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	33759000	usd
CY2023Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2682412000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3448324000	usd
CY2022Q1	us-gaap	Profit Loss ProfitLoss	120026000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-511480000	usd
CY2022Q1	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	136000	usd
CY2022Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	55855000	usd
CY2022Q1	cbsh	Stock Issued During Period Rs As And Sa Rs StockIssuedDuringPeriodRSAsAndSARs	-448000	usd
CY2022Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4218000	usd
CY2022Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.252
CY2022Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	32143000	usd
CY2022Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2973402000	usd
CY2023Q1	us-gaap	Profit Loss ProfitLoss	120553000	usd
CY2022Q1	us-gaap	Profit Loss ProfitLoss	120026000	usd
CY2023Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	11456000	usd
CY2022Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-9858000	usd
CY2023Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	11565000	usd
CY2022Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	11811000	usd
CY2023Q1	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-7654000	usd
CY2022Q1	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-4932000	usd
CY2023Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	-306000	usd
CY2022Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	7163000	usd
CY2023Q1	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	137000	usd
CY2022Q1	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	1302000	usd
CY2023Q1	cbsh	Origination Of Loans Held For Sale OriginationOfLoansHeldForSale	9931000	usd
CY2022Q1	cbsh	Origination Of Loans Held For Sale OriginationOfLoansHeldForSale	57580000	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	8850000	usd
CY2022Q1	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	57789000	usd
CY2023Q1	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-11548000	usd
CY2022Q1	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-9798000	usd
CY2023Q1	cbsh	Purchase Of Interest Rate Floor PurchaseOfInterestRateFloor	-25900000	usd
CY2022Q1	cbsh	Purchase Of Interest Rate Floor PurchaseOfInterestRateFloor	0	usd
CY2023Q1	us-gaap	Share Based Compensation ShareBasedCompensation	4373000	usd
CY2022Q1	us-gaap	Share Based Compensation ShareBasedCompensation	4218000	usd
CY2023Q1	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	1005000	usd
CY2022Q1	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	7972000	usd
CY2023Q1	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	10025000	usd
CY2022Q1	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	273000	usd
CY2023Q1	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	26970000	usd
CY2022Q1	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	28657000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	60270000	usd
CY2022Q1	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	29115000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	116057000	usd
CY2022Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	124514000	usd
CY2023Q1	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	1434000	usd
CY2022Q1	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	400000	usd
CY2023Q1	cbsh	Cash Proceeds From Sales Of Investment Securities CashProceedsFromSalesOfInvestmentSecurities	840435000	usd
CY2022Q1	cbsh	Cash Proceeds From Sales Of Investment Securities CashProceedsFromSalesOfInvestmentSecurities	1745000	usd
CY2023Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	474220000	usd
CY2022Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	805355000	usd
CY2023Q1	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	168584000	usd
CY2022Q1	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	1812434000	usd
CY2023Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	239230000	usd
CY2022Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	287328000	usd
CY2023Q1	us-gaap	Payments For Securities Purchased Under Agreements To Resell PaymentsForSecuritiesPurchasedUnderAgreementsToResell	0	usd
CY2022Q1	us-gaap	Payments For Securities Purchased Under Agreements To Resell PaymentsForSecuritiesPurchasedUnderAgreementsToResell	200000000	usd
CY2023Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	20044000	usd
CY2022Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	15597000	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	6000	usd
CY2022Q1	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	175000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	888237000	usd
CY2022Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1507684000	usd
CY2023Q1	cbsh	Net Increase Decrease Non Interest Bearing Savings Interest Checking And Money Market Deposits NetIncreaseDecreaseNonInterestBearingSavingsInterestCheckingAndMoneyMarketDeposits	-2137278000	usd
CY2022Q1	cbsh	Net Increase Decrease Non Interest Bearing Savings Interest Checking And Money Market Deposits NetIncreaseDecreaseNonInterestBearingSavingsInterestCheckingAndMoneyMarketDeposits	-208358000	usd
CY2023Q1	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	584382000	usd
CY2022Q1	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-303277000	usd
CY2023Q1	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	-57175000	usd
CY2022Q1	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	-705506000	usd
CY2023Q1	cbsh	Net Increase Decrease In Short Term Borrowings NetIncreaseDecreaseInShortTermBorrowings	1498104000	usd
CY2022Q1	cbsh	Net Increase Decrease In Short Term Borrowings NetIncreaseDecreaseInShortTermBorrowings	-3503000	usd
CY2023Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	36245000	usd
CY2022Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	55855000	usd
CY2023Q1	cbsh	Paymentsforstockvalueissuedundersharebasedcompensationplans Paymentsforstockvalueissuedundersharebasedcompensationplans	0	usd
CY2022Q1	cbsh	Paymentsforstockvalueissuedundersharebasedcompensationplans Paymentsforstockvalueissuedundersharebasedcompensationplans	-448000	usd
CY2023Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	33759000	usd
CY2022Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	32143000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-181971000	usd
CY2022Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1308194000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	822323000	usd
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-2691364000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	897801000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4296954000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1720124000	usd
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1605590000	usd
CY2023Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3857000	usd
CY2022Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1640000	usd
CY2023Q1	us-gaap	Interest Paid Net InterestPaidNet	47209000	usd
CY2022Q1	us-gaap	Interest Paid Net InterestPaidNet	2723000	usd
CY2023Q1	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	72000	usd
CY2022Q1	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	25000	usd
CY2022Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	18200000	usd
CY2023Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	0	usd
CY2023Q1	us-gaap	Interest Receivable InterestReceivable	61900000	usd
CY2022Q4	us-gaap	Interest Receivable InterestReceivable	55500000	usd
CY2023Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	16535522000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	16303131000	usd
CY2023Q1	cbsh	Pledged Financial Instruments Not Separately Reported Loans Receivable For Federal Home Loan Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivableForFederalHomeLoanBankDebt	3300000000	usd
CY2023Q1	cbsh	Pledged Financial Instruments Not Separately Reported Loans Receivable For Federal Reserve Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivableForFederalReserveBankDebt	1300000000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	150136000	usd
CY2023Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	15948000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	9048000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2281000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	6767000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	159317000	usd
CY2022Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	33120000	usd
CY2023Q1	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-4492000	usd
CY2023Q1	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	28628000	usd
CY2023Q1	cbsh	Financing Receivable Allowance For Credit Loss And Unfunded Lending Commitments Total FinancingReceivableAllowanceForCreditLossAndUnfundedLendingCommitmentsTotal	187945000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	150044000	usd
CY2022Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-10686000	usd
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	7462000	usd
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2814000	usd
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	4648000	usd
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	134710000	usd
CY2021Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	24204000	usd
CY2022Q1	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	828000	usd
CY2022Q1	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	25032000	usd
CY2022Q1	cbsh	Financing Receivable Allowance For Credit Loss And Unfunded Lending Commitments Total FinancingReceivableAllowanceForCreditLossAndUnfundedLendingCommitmentsTotal	159742000	usd
CY2023Q1	cbsh	Financing Receivable Recorded Investment Currentor Lessthan30days Past Due FinancingReceivableRecordedInvestmentCurrentorLessthan30daysPastDue	16460749000	usd
CY2023Q1	cbsh	Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due FinancingReceivableRecordedInvestmentThirtyToEightyNineDaysPastDue	52172000	usd
CY2023Q1	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	14800000	usd
CY2023Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	7801000	usd
CY2023Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	16535522000	usd
CY2022Q4	cbsh	Financing Receivable Recorded Investment Currentor Lessthan30days Past Due FinancingReceivableRecordedInvestmentCurrentorLessthan30daysPastDue	16229187000	usd
CY2022Q4	cbsh	Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due FinancingReceivableRecordedInvestmentThirtyToEightyNineDaysPastDue	49808000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	15830000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	8306000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	16303131000	usd
CY2023Q1	cbsh	Credit Quality Personal Real Estate Loans Excluded CreditQualityPersonalRealEstateLoansExcluded	178100000	usd
CY2022Q4	cbsh	Credit Quality Personal Real Estate Loans Excluded CreditQualityPersonalRealEstateLoansExcluded	179200000	usd
CY2023Q1	cbsh	Consumer Healthcare Loans Excluded ConsumerHealthcareLoansExcluded	195500000	usd
CY2022Q4	cbsh	Consumer Healthcare Loans Excluded ConsumerHealthcareLoansExcluded	197500000	usd
CY2023Q1	cbsh	Credit Quality Personal Banking Loan Table Percentage Loans Excluded CreditQualityPersonalBankingLoanTablePercentageLoansExcluded	0.07	rate
CY2023Q1	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	28831000	usd
CY2023Q1	us-gaap	Financing Receivable Modification To Total Financing Receivables Percent FinancingReceivableModificationToTotalFinancingReceivablesPercent	0.002
CY2023Q1	cbsh	Financing Receivable Modified Minimum Term Of Payment Deferral For Forbearance And Repayment Plans FinancingReceivableModifiedMinimumTermOfPaymentDeferralForForbearanceAndRepaymentPlans	P3M
CY2023Q1	cbsh	Financing Receivable Modified Maximum Term Of Payment Deferral For Forbearance And Repayment Plans FinancingReceivableModifiedMaximumTermOfPaymentDeferralForForbearanceAndRepaymentPlans	P30Y
CY2023Q1	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	532000	usd
CY2023Q1	cbsh	Period After Which Loans Are Deemed In Default PeriodAfterWhichLoansAreDeemedInDefault	P90D
CY2023Q1	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	83000	usd
CY2023Q1	cbsh	Financing Receivable Modified In Period Current FinancingReceivableModifiedInPeriodCurrent	27924000	usd
CY2023Q1	cbsh	Financing Receivable Modified In Period Thirty To Eighty Nine Days Past Due FinancingReceivableModifiedInPeriodThirtyToEightyNineDaysPastDue	824000	usd
CY2023Q1	cbsh	Financing Receivable Modified In Period Ninety Days Past Due FinancingReceivableModifiedInPeriodNinetyDaysPastDue	83000	usd
CY2023Q1	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	28831000	usd
CY2022Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	198671000	usd
CY2023Q1	cbsh	Period After Which Loans Are Deemed In Default PeriodAfterWhichLoansAreDeemedInDefault	P90D
CY2022Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	198671000	usd
CY2022Q4	cbsh	Financing Receivable Troubled Debt Restructurings That Subsequently Defaulted Recorded Investment FinancingReceivableTroubledDebtRestructuringsThatSubsequentlyDefaultedRecordedInvestment	1139000	usd
CY2022	cbsh	Effect On Interest Income Resulting From Modification To Credit Card Loans EffectOnInterestIncomeResultingFromModificationToCreditCardLoans	661000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	12600000	usd
CY2023Q1	us-gaap	Mortgages Held For Sale Fair Value Disclosure MortgagesHeldForSaleFairValueDisclosure	684000	usd
CY2023Q1	cbsh	Unpaid Principal Balanceon Personal Real Estate Loans Heldfor Sale UnpaidPrincipalBalanceonPersonalRealEstateLoansHeldforSale	666000	usd
CY2023Q1	cbsh	Student Loans Heldfor Sale Lowerof Costor Fair Value StudentLoansHeldforSaleLowerofCostorFairValue	5300000	usd
CY2023Q1	cbsh	Loans Held For Sale90 Days Past Dueand Still Accruing LoansHeldForSale90DaysPastDueandStillAccruing	0	usd
CY2023Q1	cbsh	Hfs Loansonnonaccrualstatus HFSLoansonnonaccrualstatus	0	usd
CY2023Q1	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	167000	usd
CY2022Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	96000	usd
CY2023Q1	cbsh	Residential Real Estate Acquired Through Foreclosure Through Obtaining Physical Possession ResidentialRealEstateAcquiredThroughForeclosureThroughObtainingPhysicalPossession	167000	usd
CY2022Q4	cbsh	Residential Real Estate Acquired Through Foreclosure Through Obtaining Physical Possession ResidentialRealEstateAcquiredThroughForeclosureThroughObtainingPhysicalPossession	96000	usd
CY2023Q1	us-gaap	Other Foreclosed Assets OtherForeclosedAssets	1400000	usd
CY2022Q4	us-gaap	Other Foreclosed Assets OtherForeclosedAssets	1600000	usd
CY2023Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	11228616000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	12238316000	usd
CY2023Q1	us-gaap	Trading Securities TradingSecurities	41584000	usd
CY2022Q4	us-gaap	Trading Securities TradingSecurities	43523000	usd
CY2023Q1	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	6083000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	6210000	usd
CY2023Q1	cbsh	Equtiy Securitieswithout Readily Determinable Fair Values EqutiySecuritieswithoutReadilyDeterminableFairValues	6445000	usd
CY2022Q4	cbsh	Equtiy Securitieswithout Readily Determinable Fair Values EqutiySecuritieswithoutReadilyDeterminableFairValues	6094000	usd
CY2023Q1	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	34887000	usd
CY2022Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	34795000	usd
CY2023Q1	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	70112000	usd
CY2022Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	10678000	usd
CY2023Q1	us-gaap	Equity Method Investments EquityMethodInvestments	0	usd
CY2022Q4	us-gaap	Equity Method Investments EquityMethodInvestments	1434000	usd
CY2023Q1	cbsh	Private Equity Investments PrivateEquityInvestments	163418000	usd
CY2022Q4	cbsh	Private Equity Investments PrivateEquityInvestments	178127000	usd
CY2023Q1	cbsh	Total Investment Securities TotalInvestmentSecurities	11551145000	usd
CY2022Q4	cbsh	Total Investment Securities TotalInvestmentSecurities	12519177000	usd
CY2023Q1	us-gaap	Interest Receivable Current InterestReceivableCurrent	32700000	usd
CY2022Q4	us-gaap	Interest Receivable Current InterestReceivableCurrent	38800000	usd
CY2023Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	12538550000	usd
CY2023Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	11228616000	usd
CY2023Q1	cbsh	Percentage Decrease In Fair Value Below Amortized Cost PercentageDecreaseInFairValueBelowAmortizedCost	0.20
CY2023Q1	cbsh	Fair Value Securities On Impairment Watch List FairValueSecuritiesOnImpairmentWatchList	676000000	usd
CY2022Q4	cbsh	Fair Value Securities On Impairment Watch List FairValueSecuritiesOnImpairmentWatchList	1300000000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1024868000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	19260000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	10009201000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1292655000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	11034069000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	1311915000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	4402724000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	250660000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	7625021000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1249972000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	12027745000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	1500632000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	11000000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	12000000000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	1300000000	usd
CY2023Q1	cbsh	Af Ssecuritiesinlosspositionatperiodendchangeinunrealizedloss AFSsecuritiesinlosspositionatperiodendchangeinunrealizedloss	-188700000	usd
CY2023Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	12538550000	usd
CY2023Q1	cbsh	Available For Sale Securities Gross Unreailzed Gainat Period End AvailableForSaleSecuritiesGrossUnreailzedGainatPeriodEnd	1981000	usd
CY2023Q1	cbsh	Available For Sale Securities Gross Unrealized Lossat Period End AvailableForSaleSecuritiesGrossUnrealizedLossatPeriodEnd	1311915000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	usd
CY2023Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	11228616000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	13738206000	usd
CY2022Q4	cbsh	Available For Sale Securities Gross Unreailzed Gainat Period End AvailableForSaleSecuritiesGrossUnreailzedGainatPeriodEnd	742000	usd
CY2022Q4	cbsh	Available For Sale Securities Gross Unrealized Lossat Period End AvailableForSaleSecuritiesGrossUnrealizedLossatPeriodEnd	1500632000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	12238316000	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	812176000	usd
CY2022Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2023Q1	cbsh	Proceeds From Sale Of Other Securities ProceedsFromSaleOfOtherSecurities	28259000	usd
CY2022Q1	cbsh	Proceeds From Sale Of Other Securities ProceedsFromSaleOfOtherSecurities	1745000	usd
CY2023Q1	cbsh	Proceedsfromsalesandmaturitiesofavailableforsaledebtequityandothersecurities Proceedsfromsalesandmaturitiesofavailableforsaledebtequityandothersecurities	840435000	usd
CY2022Q1	cbsh	Proceedsfromsalesandmaturitiesofavailableforsaledebtequityandothersecurities Proceedsfromsalesandmaturitiesofavailableforsaledebtequityandothersecurities	1745000	usd
CY2023Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	-306000	usd
CY2022Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	7163000	usd
CY2023Q1	cbsh	Investment Securities Pledged At Fair Value InvestmentSecuritiesPledgedAtFairValue	8100000000	usd
CY2022Q4	cbsh	Investment Securities Pledged At Fair Value InvestmentSecuritiesPledgedAtFairValue	4700000000	usd
CY2023Q1	cbsh	Investments Exceeding Ten Percent Of Stockholders Equity InvestmentsExceedingTenPercentOfStockholdersEquity	0
CY2023Q1	cbsh	Percentage Of Stockholders Equity Of Which No Investment From Single Issuer Exceeds PercentageOfStockholdersEquityOfWhichNoInvestmentFromSingleIssuerExceeds	0.10
CY2023Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	27777000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	16459000	usd
CY2023Q1	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	0	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	11318000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	53457000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	41823000	usd
CY2022Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	0	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	11634000	usd
CY2023Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	356000	usd
CY2022Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	609000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	1396000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	1260000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	1117000	usd
CY2023Q1	us-gaap	Quarterly Financial Information Segment Reporting Change In Basis Of Segmentation QuarterlyFinancialInformationSegmentReportingChangeInBasisOfSegmentation	$1.9 billion
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	977000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	841000	usd
CY2023Q1	cbsh	Disposal Of Intangible Assets DisposalOfIntangibleAssets	25700000	usd
CY2023Q1	us-gaap	Goodwill Goodwill	138921000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	138921000	usd
CY2023Q1	us-gaap	Sales Type And Direct Financing Leases Profit Loss SalesTypeAndDirectFinancingLeasesProfitLoss	6755000	usd
CY2022Q1	us-gaap	Sales Type And Direct Financing Leases Profit Loss SalesTypeAndDirectFinancingLeasesProfitLoss	5247000	usd
CY2023Q1	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2334000	usd
CY2022Q1	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2184000	usd
CY2023Q1	us-gaap	Lease Income LeaseIncome	9089000	usd
CY2022Q1	us-gaap	Lease Income LeaseIncome	7431000	usd
CY2023Q1	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	116000	usd
CY2022Q1	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	132000	usd
CY2023Q1	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1158000	usd
CY2022Q1	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	665000	usd
CY2023Q1	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	1001000	usd
CY2022Q1	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	1126000	usd
CY2023Q1	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-67000	usd
CY2022Q1	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-68000	usd
CY2023Q1	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-427000	usd
CY2022Q1	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-498000	usd
CY2023Q1	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	633000	usd
CY2022Q1	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	101000	usd
CY2023Q1	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	0	usd
CY2023Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	216000	shares
CY2022Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	125000	shares
CY2023Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	140000000	shares
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1086864000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	196093000	usd
CY2023Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	937000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	195156000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	48790000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	146366000	usd
CY2023Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-940498000	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	77080000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-676353000	usd
CY2022Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	5620000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-681973000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-170493000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-511480000	usd
CY2022Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-434400000	usd
CY2023Q1	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	operating_segments
CY2023Q1	cbsh	Number Of Locations NumberOfLocations	145	locations
CY2023Q1	us-gaap	Revenues Revenues	0	usd
CY2022Q1	us-gaap	Revenues Revenues	0	usd
CY2023Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	251623000	usd
CY2023Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	11456000	usd
CY2023Q1	us-gaap	Noninterest Income NoninterestIncome	137612000	usd
CY2023Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	-306000	usd
CY2023Q1	us-gaap	Noninterest Expense NoninterestExpense	224107000	usd
CY2023Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	153366000	usd
CY2022Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	208786000	usd
CY2022Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-9858000	usd
CY2022Q1	us-gaap	Noninterest Income NoninterestIncome	131769000	usd
CY2022Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	7163000	usd
CY2022Q1	us-gaap	Noninterest Expense NoninterestExpense	205648000	usd
CY2022Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	151928000	usd
CY2023Q1	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	4240244000	usd
CY2022Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	3742521000	usd
CY2023Q1	us-gaap	Derivative Assets DerivativeAssets	100157000	usd
CY2022Q4	us-gaap	Derivative Assets DerivativeAssets	60492000	usd
CY2023Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	43068000	usd
CY2022Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	54984000	usd
CY2023Q1	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	661000	usd
CY2022Q1	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	1562000	usd
CY2023Q1	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	100157000	usd
CY2023Q1	cbsh	Derivative Asset Amount Offset By Liabiilty DerivativeAssetAmountOffsetByLiabiilty	0	usd
CY2023Q1	us-gaap	Derivative Assets DerivativeAssets	100157000	usd
CY2023Q1	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	43068000	usd
CY2023Q1	cbsh	Derivative Liability Amount Offset By Asset DerivativeLiabilityAmountOffsetByAsset	0	usd
CY2023Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	43068000	usd
CY2022Q4	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	60492000	usd
CY2022Q4	cbsh	Derivative Asset Amount Offset By Liabiilty DerivativeAssetAmountOffsetByLiabiilty	0	usd
CY2022Q4	us-gaap	Derivative Assets DerivativeAssets	60492000	usd
CY2022Q4	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	54984000	usd
CY2022Q4	cbsh	Derivative Liability Amount Offset By Asset DerivativeLiabilityAmountOffsetByAsset	0	usd
CY2022Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	54984000	usd
CY2023Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4400000	usd
CY2022Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4200000	usd
CY2022Q4	cbsh	Nonvested Share Awards Balances NonvestedShareAwardsBalances	1148873	shares
CY2022Q4	cbsh	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Nonvested Share Awards Weighted Average Grant Date Unit Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedShareAwardsWeightedAverageGrantDateUnitFairValue	58.20
CY2023Q1	cbsh	Nonvested Share Awards Granted In Period NonvestedShareAwardsGrantedInPeriod	247082	shares
CY2023Q1	cbsh	Share Based Compensation Granted Nonvested Share Award Weighted Average Grant Date Fair Value ShareBasedCompensationGrantedNonvestedShareAwardWeightedAverageGrantDateFairValue	65.63
CY2023Q1	cbsh	Nonvested Share Awards Vested In Period NonvestedShareAwardsVestedInPeriod	284800	shares
CY2023Q1	cbsh	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Nonvested Share Awards Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedShareAwardsVestedInPeriodWeightedAverageGrantDateFairValue	50.62
CY2023Q1	cbsh	Nonvested Share Awards Forfeited In Period NonvestedShareAwardsForfeitedInPeriod	2238	shares
CY2023Q1	cbsh	Share Based Compensation Forfeited Nonvested Share Award Weighted Average Grant Date Fair Value ShareBasedCompensationForfeitedNonvestedShareAwardWeightedAverageGrantDateFairValue	61.82
CY2023Q1	cbsh	Nonvested Share Awards Balances NonvestedShareAwardsBalances	1108917	shares
CY2023Q1	cbsh	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Nonvested Share Awards Weighted Average Grant Date Unit Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedShareAwardsWeightedAverageGrantDateUnitFairValue	61.79
CY2023Q1	cbsh	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageExercisePrice	60.00
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	18.65
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.016
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.279
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.039
CY2023Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y9M18D
CY2022Q4	cbsh	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNumber	948727	shares
CY2022Q4	cbsh	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsWeightedAverageExercisePrice	46.82
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	89829	shares
CY2023Q1	cbsh	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageExercisePrice	65.64
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	555	shares
CY2023Q1	cbsh	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercised In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriod	40976	shares
CY2023Q1	cbsh	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercised In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriodWeightedAverageExercisePrice	25.88
CY2023Q1	cbsh	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNumber	997025	shares
CY2023Q1	cbsh	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsWeightedAverageExercisePrice	49.37
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Weighted Average Remaining Contractual Terms ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms	P5Y7M6D
CY2023Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Equity Instruments Other Than Options Aggregate Intrinsic Value Outstanding SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding	11094000	usd
CY2023Q1	cbsh	Percentof Revenuenotinscopeof Asc606 PercentofRevenuenotinscopeofASC606	0.65
CY2023Q1	us-gaap	Noninterest Income NoninterestIncome	137612000	usd
CY2022Q1	us-gaap	Noninterest Income NoninterestIncome	131769000	usd
CY2023Q1	us-gaap	Derivative Assets DerivativeAssets	100157000	usd
CY2023Q1	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	18656000	usd
CY2023Q1	us-gaap	Mortgages Held For Sale Fair Value Disclosure MortgagesHeldForSaleFairValueDisclosure	684000	usd
CY2023Q1	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	1020223000	usd
CY2023Q1	cbsh	Us Government Sponsored Enterprises Debt Securities USGovernmentSponsoredEnterprisesDebtSecurities	44414000	usd
CY2023Q1	us-gaap	Financial Instruments Owned State And Municipal Government Obligations At Fair Value FinancialInstrumentsOwnedStateAndMunicipalGovernmentObligationsAtFairValue	1453814000	usd
CY2023Q1	cbsh	Financial Instruments Owned Agency Mortgage Backed Securities At Fair Value FinancialInstrumentsOwnedAgencyMortgageBackedSecuritiesAtFairValue	4271563000	usd
CY2023Q1	cbsh	Financial Instruments Owned Non Agency Mortgage Backed Securities At Fair Value FinancialInstrumentsOwnedNonAgencyMortgageBackedSecuritiesAtFairValue	1207969000	usd
CY2023Q1	cbsh	Other Asset Backed Securities Disclosure OtherAssetBackedSecuritiesDisclosure	2763578000	usd
CY2023Q1	cbsh	Financial Instruments Owned Other Debt Securities At Fair Value FinancialInstrumentsOwnedOtherDebtSecuritiesAtFairValue	467055000	usd
CY2023Q1	us-gaap	Trading Securities TradingSecurities	41584000	usd
CY2023Q1	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	6083000	usd
CY2023Q1	us-gaap	Financial Instruments Owned Principal Investments At Fair Value FinancialInstrumentsOwnedPrincipalInvestmentsAtFairValue	163418000	usd
CY2023Q1	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	11559198000	usd
CY2023Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	43068000	usd
CY2023Q1	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	18656000	usd
CY2023Q1	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	61724000	usd
CY2022Q4	us-gaap	Mortgages Held For Sale Fair Value Disclosure MortgagesHeldForSaleFairValueDisclosure	0	usd
CY2022Q4	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	1035406000	usd
CY2022Q4	cbsh	Us Government Sponsored Enterprises Debt Securities USGovernmentSponsoredEnterprisesDebtSecurities	43108000	usd
CY2022Q4	us-gaap	Financial Instruments Owned State And Municipal Government Obligations At Fair Value FinancialInstrumentsOwnedStateAndMunicipalGovernmentObligationsAtFairValue	1767109000	usd
CY2022Q4	cbsh	Financial Instruments Owned Agency Mortgage Backed Securities At Fair Value FinancialInstrumentsOwnedAgencyMortgageBackedSecuritiesAtFairValue	4308427000	usd
CY2022Q4	cbsh	Financial Instruments Owned Non Agency Mortgage Backed Securities At Fair Value FinancialInstrumentsOwnedNonAgencyMortgageBackedSecuritiesAtFairValue	1211607000	usd
CY2022Q4	cbsh	Other Asset Backed Securities Disclosure OtherAssetBackedSecuritiesDisclosure	3397801000	usd
CY2022Q4	cbsh	Financial Instruments Owned Other Debt Securities At Fair Value FinancialInstrumentsOwnedOtherDebtSecuritiesAtFairValue	474858000	usd
CY2022Q4	us-gaap	Trading Securities TradingSecurities	43523000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	6210000	usd
CY2022Q4	us-gaap	Financial Instruments Owned Principal Investments At Fair Value FinancialInstrumentsOwnedPrincipalInvestmentsAtFairValue	178127000	usd
CY2022Q4	us-gaap	Derivative Assets DerivativeAssets	60492000	usd
CY2022Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	17856000	usd
CY2022Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	12544524000	usd
CY2022Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	54984000	usd
CY2022Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	17856000	usd
CY2022Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	72840000	usd
CY2022Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	179883000	usd
CY2023Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-2309000	usd
CY2023Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	26000	usd
CY2023Q1	cbsh	Investment Securities Called InvestmentSecuritiesCalled	1000000	usd
CY2023Q1	cbsh	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Discount Accretion FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetDiscountAccretion	47000	usd
CY2023Q1	cbsh	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchase Of Private Equity Securities FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchaseOfPrivateEquitySecurities	10532000	usd
CY2023Q1	cbsh	Sales And Repayments Of Private Equity Securities SalesAndRepaymentsOfPrivateEquitySecurities	27492000	usd
CY2023Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	164305000	usd
CY2023Q1	cbsh	Change In Unrealized Gains Or Losses Related To Assets Held Level3 Fair Value Measurements ChangeInUnrealizedGainsOrLossesRelatedToAssetsHeldLevel3FairValueMeasurements	2309000	usd
CY2023Q1	cbsh	Gains Losses Included In Oci Attributable To Change In Unrealized Gains Losses Relating To Assets Still Held Total GainsLossesIncludedInOCIAttributableToChangeInUnrealizedGainsLossesRelatingToAssetsStillHeldTotal	4000	usd
CY2021Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	149961000	usd
CY2022Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-6955000	usd
CY2022Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-83000	usd
CY2022Q1	cbsh	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Discount Accretion FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetDiscountAccretion	1000	usd
CY2022Q1	cbsh	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchase Of Private Equity Securities FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchaseOfPrivateEquitySecurities	300000	usd
CY2022Q1	cbsh	Sales And Repayments Of Private Equity Securities SalesAndRepaymentsOfPrivateEquitySecurities	1745000	usd
CY2022Q1	cbsh	Purchase Of Risk Participation Agreement PurchaseOfRiskParticipationAgreement	145000	usd
CY2022Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	155534000	usd
CY2022Q1	cbsh	Change In Unrealized Gains Or Losses Related To Assets Held Level3 Fair Value Measurements ChangeInUnrealizedGainsOrLossesRelatedToAssetsHeldLevel3FairValueMeasurements	7717000	usd
CY2022Q1	cbsh	Gains Losses Included In Oci Attributable To Change In Unrealized Gains Losses Relating To Assets Still Held Total GainsLossesIncludedInOCIAttributableToChangeInUnrealizedGainsLossesRelatingToAssetsStillHeldTotal	-83000	usd
CY2023Q1	cbsh	Total Gains Or Losses Included In Earnings Level3 Fair Measurements TotalGainsOrLossesIncludedInEarningsLevel3FairMeasurements	2309000	usd
CY2023Q1	cbsh	Change In Unrealized Gains Or Losses Related To Assets Held Level3 Fair Value Measurements ChangeInUnrealizedGainsOrLossesRelatedToAssetsHeldLevel3FairValueMeasurements	2309000	usd
CY2022Q1	cbsh	Total Gains Or Losses Included In Earnings Level3 Fair Measurements TotalGainsOrLossesIncludedInEarningsLevel3FairMeasurements	6955000	usd
CY2022Q1	cbsh	Change In Unrealized Gains Or Losses Related To Assets Held Level3 Fair Value Measurements ChangeInUnrealizedGainsOrLossesRelatedToAssetsHeldLevel3FairValueMeasurements	7717000	usd
CY2023Q1	cbsh	Loans Nonrecurring Basis LoansNonrecurringBasis	1819000	usd
CY2023Q1	cbsh	Loans Nonrecurring Basis Gains Losses LoansNonrecurringBasisGainsLosses	425000	usd
CY2022Q1	cbsh	Mortgage Servicing Rights Nonrecurring Basis MortgageServicingRightsNonrecurringBasis	11360000	usd
CY2022Q1	cbsh	Mortgage Servicing Rights Nonrecurring Basis Gains Losses MortgageServicingRightsNonrecurringBasisGainsLosses	304000	usd
CY2022Q1	cbsh	Long Lived Assets Nonrecurring Basis LongLivedAssetsNonrecurringBasis	497000	usd
CY2022Q1	cbsh	Long Lived Assets Nonrecurring Basis Gains Losses LongLivedAssetsNonrecurringBasisGainsLosses	-965000	usd
CY2023Q1	cbsh	Fair Value Discounted Cash Flow Valuation Techniques FairValueDiscountedCashFlowValuationTechniques	Discounted cash flow

Files In Submission

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$CBSH
COMMERCE BANCSHARES INC /MO/ Stock $cbsh

2023 Q2 Form 10-Q Financial Statement

#000002235623000037 Filed on May 04, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CBSH COMMERCE BANCSHARES INC /MO/ Stock $cbsh

2023 Q2 Form 10-Q Financial Statement

#000002235623000037 Filed on May 04, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CBSH
COMMERCE BANCSHARES INC /MO/ Stock $cbsh