EBP, Dividends Paid, Reinvested in Company Stock EBP, Dividends Paid, Reinvested in Company Stock EBP, Dividends Paid, Reinvested in Company Stock EBP, Company Matching Contribtuions Years of Vesting Service Tranche One EBP, Company Matching Contributions Vesting Years of Service Tranche One EBP, Company Matching Contributions Vesting Years of Service Tranche One EBP, Active Participants EBP, Active Participants EBP, Active Participants Statistical Measurement [Domain] Statistical Measurement [Domain] Vested Percentage if Plan Terminated Vested Percentage if Plan Terminated Vested Percentage if Plan Terminated EBP, Related Party and Party-in-Interest Transactions EBP, Related Party and Party-in-Interest Transactions [Text Block] Interest income on notes receivable from participants EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Document Information [Line Items] Document Information [Line Items] EBP, Investment, Sold, Number of Shares EBP, Investment, Sold, Number of Shares EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount EBP, Employer, Common Stock Fund EBP, Employer, Common Stock Fund [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] EBP, Description of Plan and Accounting Change [Abstract] EBP, Investment, Valuation Technique [Extensible Enumeration] EBP, Investment, Valuation Technique [Extensible Enumeration] EBP, Allocation Status [Domain] EBP, Allocation Status [Domain] Participant Rollovers EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Investment Type [Axis] Investment Type [Axis] EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] EBP, Investment, Number of Shares EBP, Investment, Number of Shares EBP, Tax Status EBP, Tax Status [Text Block] EBP, Change in Net Asset Available for Benefit, ESOP Decrease from Payment to Participant EBP, Change in Net Asset Available for Benefit, ESOP Decrease from Payment to Participant EBP, Change in Net Asset Available for Benefit, ESOP Decrease from Payment to Participant EBP, Terms of Full Vesting Outside of Service Time EBP, Terms of Full Vesting Outside of Service Time EBP, Terms of Full Vesting Outside of Service Time EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Domain] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Domain] Employee Benefit Plan Participant Loan Maturity Employee Benefit Plan Participant Loan Maturity Employee Benefit Plan Participant Loan Maturity EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] Interest and dividends EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment EBP, Description of Plan Amendment EBP, Description of Plan Amendment [Text Block] Participant Maximum Catch-up Contribution Limit Participant Maximum Catch-up Contribution Limit Participant Maximum Catch-up Contribution Limit EBP, Related Party and Party-in-Interest Transactions EBP, Related Party and Party-in-Interest Transactions [Table Text Block] Common Collective Trust [Line Items] Common Collective Trust [Line Items] Common Collective Trust [Line Items] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] EBP, Tax Qualification Status [Extensible Enumeration] EBP, Tax Qualification Status [Extensible Enumeration] EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution EBP, Vesting, Hours of Service Time Equal to a Service Year EBP, Vesting, Hours of Service Time Equal to a Service Year EBP, Vesting, Hours of Service Time Equal to a Service Year EBP, Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Text Block] Document Information, Document [Axis] Document Information, Document [Axis] EBP, Investment Acquired, Excluding Plan Interest in Master Trust, Cost EBP, Investment Acquired, Excluding Plan Interest in Master Trust, Cost EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Unrealized Gain (Loss) on Investment EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Unrealized Gain (Loss) on Investment EBP, Company Matching Contributions Vesting Years of Service Tranche Two EBP, Company Matching Contributions Vesting Years of Service Tranche Two EBP, Company Matching Contributions Vesting Years of Service Tranche Two EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] Total contributions EBP, Change in Net Asset Available for Benefit, Increase from Contribution Measurement Input Type [Domain] Measurement Input Type [Domain] EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] Money Market Funds Money Market Funds [Member] EBP, Risk and Uncertainty [Table] EBP, Risk and Uncertainty [Table] Distributions to participants EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Participant Contributions EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover EBP, Investment, Current Value, Type [Extensible Enumeration] EBP, Investment, Current Value, Type [Extensible Enumeration] EBP, Investment, ESOP, Fair Value EBP, Investment, ESOP, Fair Value EBP, Investment, ESOP, Fair Value EBP, Investment, ESOP, Fair Value EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Axis] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Axis] EBP, Summary of Dividends Paid on Company Stock EBP, Summary of Dividends Paid on Company Stock [Table Text Block] EBP, Summary of Dividends Paid on Company Stock EBP, Payment to Participant EBP, Payment to Participant [Policy Text Block] EBP, Participant-Directed and Nonparticipant-Directed Status [Domain] EBP, Participant-Directed and Nonparticipant-Directed Status [Domain] EBP, Net Asset Available for Benefit EBP, Net Asset Available for Benefit, Beginning Balance EBP, Net Asset Available for Benefit, Ending Balance EBP, Net Asset Available for Benefit EBP, Employer Contribution Vesting Schedule [Table] EBP, Employer Contribution Vesting Schedule [Table] EBP, Employer Contribution Vesting Schedule EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] Plan Termination [Line Items] Plan Termination [Line Items] Plan Termination [Line Items] EBP, Participant Contribution, Pretax, Maximum Annual Compensation, Amount EBP, Participant Contribution, Pretax, Maximum Annual Compensation, Amount EBP, Employer, Common Stock EBP, Employer, Common Stock [Member] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] EBP, Tax Status [Abstract] EBP, Change in Net Asset Available for Benefit, Increase (Decrease) EBP, Change in Net Asset Available for Benefit, Increase (Decrease) Cover [Abstract] EBP, Other Related Party and Party-in-Interest EBP, Other Related Party and Party-in-Interest [Member] Maximum Maximum [Member] Employer Contributions EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash Schedule of Assets Schedule of Assets [Text Block] Schedule of Assets EBP, Risk and Uncertainty [Line Items] EBP, Risk and Uncertainty [Line Items] EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage Minimum Minimum [Member] EBP, Schedule of Asset Held for Investment [Abstract] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Entity [Domain] Entity [Domain] EBP, Company Contributions Vesting Years of Service Percentage Tranche One EBP, Company Contributions Vesting Years of Service Percentage Tranche One EBP, Company Contributions Vesting Years of Service Percentage Tranche One EBP, Asset Held for Investment EBP, Asset Held for Investment Investment, Identifier [Axis] Investment, Identifier [Axis] Document Fiscal Year Focus Document Fiscal Year Focus EBP, Dividends Paid, Distributed to Participants EBP, Dividends Paid, Distributed to Participants EBP, Dividends Paid, Distributed to Participants EBP, Allocation Status [Axis] EBP, Allocation Status [Axis] EBP, Tax Determination Letter, Obtained [true false] EBP, Tax Determination Letter, Obtained [true false] EBP, Investment, Fair Value and NAV [Abstract] EBP, Plan Amendment [Table] EBP, Plan Amendment [Table] EBP, Plan Amendment EBP, Basis of Accounting EBP, Basis of Accounting [Policy Text Block] EPB, Incremental Percentage of Future Employee Contributions EPB, Incremental Percentage of Future Employee Contributions EPB, Incremental Percentage of Future Employee Contributions EBP, Subsequent Event [Line Items] EBP, Subsequent Event [Line Items] Document [Domain] Document [Domain] EBP, Summary of Changes in ESOP Assets EBP, Summary of Changes in ESOP Assets [Table] EBP, Summary of Changes in ESOP Assets EBP, Plan Amendment [Abstract] EBP, Plan Amendment [Abstract] EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] EBP, Company Stock Fund [Abstract] EBP, Company Stock Fund [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Minimum Age of Eligible Participant EBP, Minimum Age of Eligible Participant EBP, Minimum Age of Eligible Participant EBP, Description of Plan [Table] EBP, Description of Plan [Table] Mutual Fund Mutual Fund [Member] EBP, Asset Held for Investment, Party-in-Interest [true false] EBP, Asset Held for Investment, Party-in-Interest [true false] EBP, Investment EBP, Investment [Policy Text Block] EBP, Incremental Percentage of Transfers between Existing Fund Balances EBP, Incremental Percentage of Transfers between Existing Fund Balances EBP, Incremental Percentage of Transfers between Existing Fund Balances EBP 002 EBP 002 [Member] EBP 002 Amendment Flag Amendment Flag EBP, Plan Termination [Table] Plan Termination [Table] Plan Termination EBP, Participant Vest Percentage in Rollover Contributions EBP, Participant Vest Percentage in Rollover Contributions EBP, Participant Vest Percentage in Rollover Contributions Administrative credits (expenses) EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense EBP, Plan Termination [Abstract] EBP, Plan Termination [Abstract] Common Collective Trust Common Collective Trust [Member] Fair Value Measured at Net Asset Value Per Share Fair Value Measured at Net Asset Value Per Share [Member] EBP, Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Table Text Block] Total deductions EBP, Change in Net Asset Available for Benefit, Decrease EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value EBP, Plan Termination EBP, Plan Termination [Text Block] EBP, Statement of Change in Net Asset Available for Benefit [Abstract] EBP, Company Contributions Vesting Years of Service Percentage Tranche Two EBP, Company Contributions Vesting Years of Service Percentage Tranche Two EBP, Company Contributions Vesting Years of Service Percentage Tranche Two EBP, Subsequent Event [Table] EBP, Subsequent Event [Table] Measurement Input Type [Axis] Measurement Input Type [Axis] EBP, Investment Sold, Excluding Plan Interest in Master Trust, Selling Price EBP, Investment Sold, Excluding Plan Interest in Master Trust, Selling Price EBP, Related Party and Party-in-Interest Transactions [Abstract] Risks and Uncertainties Risks and Uncertainties [Text Block] Risks and Uncertainties EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] EBP, Forfeited Nonvested Account, Decrease from Employer Contribution EBP, Forfeited Nonvested Account, Decrease from Employer Contribution EBP, Statement of Net Asset Available for Benefit [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus EBP, Description of Plan EBP, Description of Plan [Text Block] EBP, Unfunded Commitments EBP, Unfunded Commitments EBP, Unfunded Commitments EBP, Tax Determination Letter, Date EBP, Tax Determination Letter, Date Investment, Issuer Name [Axis] Investment, Issuer Name [Axis] EBP, Summary of Accounting Policy EBP, Summary of Accounting Policy [Text Block] Document Period End Date Document Period End Date EBP, Note Receivable from Participant EBP, Note Receivable from Participant [Policy Text Block] Total additions EBP, Change in Net Asset Available for Benefit, Increase EBP, Participant-Directed and Nonparticipant-Directed Status [Axis] EBP, Participant-Directed and Nonparticipant-Directed Status [Axis] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items] Entity Central Index Key Entity Central Index Key EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value Legal Entity [Axis] Legal Entity [Axis] Entity Tax Identification Number Entity Tax Identification Number Total investment income EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment Scenario [Domain] Scenario [Domain] EBP, Common Collective Trust [Table] Common Collective Trust [Table] Common Collective Trust EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] EBP, Investment Valued Using Net Asset Value EBP, Investment Valued Using Net Asset Value EBP, Investment Valued Using Net Asset Value EBP, Dividends Paid EBP, Dividends Paid EBP, Dividends Paid Scenario [Axis] Scenario [Axis] EBP, Plan Number EBP, Plan Number EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] Investment, Issuer Name [Domain] Investment, Issuer Name [Domain] EBP, Investment, Issuer Name [Extensible Enumeration] EBP, Investment, Issuer Name [Extensible Enumeration] Company Stock Fund Company Stock Fund [Text Block] Company Stock Fund Document Type Document Type Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] EBP, New Accounting Pronouncements [Table] EBP, New Accounting Pronouncements [Table] EBP, New Accounting Pronouncements EBP, Use of Estimate EBP, Use of Estimate [Policy Text Block] EBP, Forfeited Nonvested Account, Unallocated Balance Available for Future Offset of Company Contributions EBP, Forfeited Nonvested Account, Unallocated Balance Available for Future Offset of Company Contributions EBP, Forfeited Nonvested Account, Unallocated Balance Available for Future Offset of Company Contributions Subsequent Event Type [Axis] Subsequent Event Type [Axis] EBP, Investment, Purchased, Number of Shares EBP, Investment, Purchased, Number of Shares Statistical Measurement [Axis] Statistical Measurement [Axis] EBP, Employer Contribution Vesting Schedule EBP, Employer Contribution Vesting Schedule [Table Text Block] EBP, Employer Contribution Vesting Schedule EBP, Summary of Changes in ESOP Assets EBP, Summary of Changes in ESOP Assets [Table Text Block] EBP, Summary of Changes in ESOP Assets EBP, Company Stock Fund [Table] EBP, Company Stock Fund [Table] EBP, Company Stock Fund EBP, Investment Redemption Terms EBP, Investment Redemption Terms EBP, Investment Redemption Terms EBP, Note Receivable from Participant EBP, Note Receivable from Participant Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] EBP, Schedule of Asset Held for Investment EBP, Schedule of Asset Held for Investment [Table Text Block] EBP, Related Party and Party-in-Interest [Axis] EBP, Related Party and Party-in-Interest [Axis] Stable Value Fund Stable Value Fund [Member] Stable Value Fund EBP, Related Party and Party-in-Interest [Domain] EBP, Related Party and Party-in-Interest [Domain] Net appreciation in fair value of investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] EBP, Subsequent Event [Abstract] Investments [Domain] Investments [Domain] EBP, Summary of Common Collective Trust EBP, Summary of Common Collective Trust [Table Text Block] EBP, Summary of Common Collective Trust Document Information [Table] Document Information [Table] EBP, New Accounting Pronouncements [Abstract] EBP, New Accounting Pronouncements [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] New Accounting Pronouncements New Accounting Pronouncements [Text Block] New Accounting Pronouncements EBP, Risk and Uncertainty [Abstract] Employee Benefit Plan, Minimum Graded Employer Matching Percentage Employee Benefit Plan, Minimum Graded Employer Matching Percentage Minimum percentage of full employer match on participant contributions based on age plus years of employment. Fair Value, Inputs, Level 1 Fair Value, Inputs, Level 1 [Member] Entity Registrant Name Entity Registrant Name Employee Benefit Plan, Maximum Graded Employer Matching Percentage Employee Benefit Plan, Maximum Graded Employer Matching Percentage Maximum percentage of full employer match on participant contributions based on age plus years of employment. EBP, Subsequent Event EBP, Subsequent Event [Text Block] EBP, Dividends Paid on Company Stock [Table] EBP, Dividends Paid on Company Stock [Table] EBP, Dividends Paid on Company Stock EBP, Tax Status [Table] EBP, Tax Status [Table] Fair Value, Inputs, Level 1, Level 2, and Level 3 Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] EBP, Employer Contribution, Participant Compensation Matched, Percentage EBP, Employer Contribution, Participant Compensation Matched, Percentage Qualified Plan [Member] Valuation, Market Approach [Member] Commerce Bancshares, Inc. [Member] Commerce Bancshares, Inc. Common Stock [Member] EBP, Participant-Directed [Member] Fidelity [Member] Fidelity Money Market Fund [Member] Money Market Fund T. Rowe Price [Member] T. Rowe Price American Century [Member] American Century American Funds [Member] American Funds Dimensional Fund Advisors [Member] Dimensional Fund Advisors Dodge & Cox [Member] Dodge & Cox Invesco [Member] Invesco JPMorgan [Member] JPMorgan Vanguard [Member] Vanguard Victory Capital Management Inc. [Member] Victory Capital Management Inc. Virtus Investment Partners [Member] Virtus Investment Partners