Proceeds from the issuance of common stock EBP, Sales of Common Stock EBP, Sales of Common Stock 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] Maximum notes receivable borrowing EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount Donaldson Company, Inc. Common Stock Fund EBP, Employer, Common Stock Fund [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Contributions EBP, Contribution [Policy Text Block] EBP, Description of Plan and Accounting Change [Abstract] Investment Type [Axis] Investment Type [Axis] Rollovers EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Maximum notes receivable borrowing (percentage) EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Number of shares (shares) EBP, Investment, Number of Shares Tax Status EBP, Tax Status [Text Block] EBP Information About Employer Contributions EBP, Information About Employer Contributions [Table Text Block] EBP, Information About Employer Contributions As Defined by the Plan EBP, As Defined by the Plan [Member] EBP, As Defined by the Plan Additional Annual Retirement Contribution EBP, Additional Annual Retirement Contribution [Member] EBP, Additional Annual Retirement Contribution EBP, Description of Plan EBP, Description of Plan [Line Items] Interest and dividend income EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment Cash dividends issued EBP, Dividends Issued, Cash EBP, Dividends Issued, Cash EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Participant Loans EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Fair Value Measurements EBP, Investment, Fair Value and NAV [Text Block] EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] Plan Expenses EBP, Expense [Policy Text Block] Total contributions EBP, Change in Net Asset Available for Benefit, Increase from Contribution Investments EBP, Investment [Text Block] EBP, Investment EBP, Participant Group [Domain] EBP, Participant Group [Domain] EBP, Participant Group [Domain] EBP 007 EBP 007 [Member] EBP 007 EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Fully Benefit-Responsive Investment Contract [Table] EBP, Fully Benefit-Responsive Investment Contract [Table] Benefits paid to participants EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Employer contributions receivable EBP, Employer Contribution, Receivable Participants EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover Payments to acquire common stock EBP, Purchases Of Common Stock EBP, Purchases Of Common Stock Benefits Paid to Participant EBP, Payment to Participant [Policy Text Block] Net assets available for benefits Net assets available for benefits, beginning of year Net assets available for benefits, end of year EBP, Net Asset Available for Benefit Schedule of Asset Held for Investment EBP, Schedule of Asset Held for Investment [Line Items] Accounting Policy EBP, Accounting Policy [Line Items] Investments EBP, Fully Benefit-Responsive Investment Contract [Line Items] Total assets EBP, Asset New Accounting Standards Not Yet Adopted EBP, New Accounting Standards Not Yet Adopted [Policy Text Block] EBP, New Accounting Standards Not Yet Adopted Service period (years) EBP, Requisite Service Period EBP, Requisite Service Period 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] Net increase in net assets available for benefits EBP, Change in Net Asset Available for Benefit, Increase (Decrease) Cover [Abstract] Employer Total employer contributions EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash Vesting percentage (percent) EBP, Employer Contribution Vesting Percentage Company contribution and/ or investment earning percentage vesting to the participant in Company Matching Contributions, Fixed Rate Contributions, Discretionary Profit-Sharing Contributions, Qualified Non-Elective Contributions, and Disability Contributions, upon completion of minimum service period or attainment of maximum vesting age Assets EBP, Asset [Abstract] Maximum contribution by participant (percent) EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage EBP, Schedule of Asset Held for Investment [Abstract] Maximum catch-up contribution by participant (percent) EBP, Participant Contribution, Pretax, Maximum Annual Catch-up Compensation to Total Compensation, Percentage EBP, Participant Contribution, Pretax, Maximum Annual Catch-up Compensation to Total Compensation, Percentage Entity [Domain] Entity [Domain] Investment, Identifier [Axis] Investment, Identifier [Axis] EBP, Investment, Fair Value and NAV [Abstract] Matching percentage (percent) EBP, Employer Contribution, Matching Percentage Basis of Accounting EBP, Basis of Accounting [Policy Text Block] Subsequent Events EBP, Subsequent Event [Line Items] Risk and Uncertainties EBP, Risk and Uncertainty [Policy Text Block] Tax Status EBP, Tax Status [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Description of Plan [Table] EBP, Description of Plan [Table] Valuation of Investments EBP, Investment [Policy Text Block] Cost EBP, Asset Held for Investment, Participant Loan, Cost EBP, Asset Held for Investment, Participant Loan, Cost Concentration percentage EBP, Investment, Excluding Plan Interest in Master Trust, Concertation Percentage EBP, Investment, Excluding Plan Interest in Master Trust, Concertation Percentage Amendment Flag Amendment Flag Administrative expenses EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Common/collective trust fund investments measured at NAV Common Collective Trust [Member] NAV 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, Statement of Change in Net Asset Available for Benefit [Abstract] EBP, Subsequent Event [Table] EBP, Subsequent Event [Table] EBP, Related Party and Party-in-Interest Transactions [Abstract] Forfeited nonvested account EBP, Forfeited Nonvested Account Related Party and Exempt Party-in-Interest Transactions EBP, Related Party and Party-in-Interest Transactions [Line Items] Decrease related to forfeiture of nonvested account EBP, Forfeited Nonvested Account, Decrease from Employer Contribution EBP, Description of Plan EBP, Description of Plan [Text Block] EBP, Summary of Accounting Policy EBP, Summary of Accounting Policy [Text Block] Decrease related to administrative expenses in nonvested forfeited accounts EBP, Forfeited Nonvested Account, Decrease from Administrative Expense First 3% of Compensation EBP, Compensation Range One [Member] EBP, Compensation Range One Note Receivable from Participant EBP, Note Receivable from Participant [Policy Text Block] Total additions EBP, Change in Net Asset Available for Benefit, Increase 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 Investments, at 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 income EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] EBP, Plan Number EBP, Plan Number Contributions: EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] EBP, Allocation Threshold [Domain] EBP, Allocation Threshold [Domain] EBP, Allocation Threshold [Domain] Document Type Document Type 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] Fair Value Measurements EBP, Investment, Fair Value and NAV [Line Items] EBP, Participant Group [Axis] EBP, Participant Group [Axis] EBP, Participant Group Use of Estimate EBP, Use of Estimate [Policy Text Block] Next 2% of Compensation EBP, Compensation Range Two [Member] EBP, Compensation Range Two EBP, Fully Benefit-Responsive Investment Contract [Abstract] EBP, Allocation Threshold [Axis] EBP, Allocation Threshold [Axis] EBP, Allocation Threshold Deductions EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Notes receivable from participants EBP, Note Receivable from Participant Investment allocation (percent) EBP, Investment Allocation Percentage EBP, Investment Allocation Percentage Level 2 Fair Value, Inputs, Level 2 [Member] Schedule of Asset Held for Investment EBP, Schedule of Asset Held for Investment [Table Text Block] Additions EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Shedule Of Significant Investments EBP, Shedule Of Significant Investments [Table Text Block] EBP, Shedule Of Significant Investments Net appreciation of the 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] Investments [Domain] Investments [Domain] EBP, Subsequent Event [Abstract] Participant-directed brokerage accounts EBP, Self-Directed Brokerage Account [Member] Document Information [Table] Document Information [Table] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] Level 1 Fair Value, Inputs, Level 1 [Member] Entity Registrant Name Entity Registrant Name Subsequent Events EBP, Subsequent Event [Text Block] Concentration of Market Risk EBP, Concentration of Market Risk [Policy Text Block] EBP, Concentration of Market Risk EBP, Tax Status [Table] EBP, Tax Status [Table] Mutual funds and interest bearing cash EBP, Mutual Fud And Interest Bearing Cash [Member] EBP, Mutual Fud And Interest Bearing Cash Fair Value, Inputs, Level 1, Level 2, and Level 3 Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Participant contribution matched (percent) EBP, Employer Contribution, Participant Compensation Matched, Percentage Investments Earnings EBP, Investments Earnings [Policy Text Block] EBP, Investments Earnings