Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] Other non-current assets Schedule of Other Assets, Noncurrent [Table Text Block] Prior service credit Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax Title of 12(b) Security Title of 12(b) Security Income attributable to Deluxe available to common shareholders Net Income (Loss) Available to Common Stockholders, Diluted Document Fiscal Year Focus Document Fiscal Year Focus Adjustment to Compensation, Amount Adjustment to Compensation Amount Pledged Status [Axis] Pledged Status [Axis] Customer [Axis] Customer [Axis] Segment Reporting [Abstract] Segment Reporting [Abstract] Estimated future amortization expense Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block] Proceeds receivable from asset sale (Note 6) [Member] Proceeds receivable from asset sale [Member] Proceeds receivable from asset sale Common shares $1 par value (authorized: 500.0 shares; outstanding: June 30, 2026 - 45.8; December 31, 2025 - 45.0) Common Stock, Value, Issued Interest expense Interest expense Interest Expense, Operating and Nonoperating Other Other Assets, Miscellaneous, Noncurrent Postretirement benefits Retirement Benefits [Text Block] Maximum consolidated total leverage ratio Consolidated total leverage ratio The maximum consolidated total leverage ratio allowed under the entity's debt covenants. Restatement Determination Date Restatement Determination Date Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Valuation allowance increase, capital loss carryforward Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Treasury management solutions [Member] Treasury management solutions [Member] Treasury management solutions Finance lease payments, 2027 Finance Lease, Liability, to be Paid, Year One Maturities of long-term debt Maturities of Long-Term Debt [Abstract] Derivative Instrument [Axis] Derivative Instrument [Axis] Revenue in excess of billings Revenue in excess of billings Revenue in excess of billings, current Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer, for which the customer has not been billed, classified as current. Re-measurement of share-based awards classified as liabilities Remeasurement Of Liability Share Based Award Adjustment to earnings to exclude the impact resulting from the fair value measurement of share-based awards classified as liabilities in the statement of financial position. Measurement Frequency [Axis] Measurement Frequency [Axis] Allowance for credit losses Accounts Receivable, Allowance for Credit Loss Amendment Flag Amendment Flag Goodwill [Line Items] Goodwill [Line Items] Current liabilities: Liabilities, Current [Abstract] Bad debt expense Accounts Receivable, Credit Loss Expense (Reversal) Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Right-of-use asset, finance lease Finance Lease, Right-of-Use Asset, before Accumulated Amortization Amortization of intangibles Amortization of intangibles Amortization Other Comprehensive Income (Loss), Net of Tax [Abstract] Other Comprehensive Income (Loss), Net of Tax [Abstract] Amortizable intangibles [Line Items] Intangible Asset, Finite-Lived, Acquired [Line Items] Annual permitted payments Permitted payments Limit on annual permitted payments under the terms of the company's debt agreement. Adjusted EBITDA Adjusted EBITDA Adjusted EBITDA reported as the entity's measure of segment profitability. Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Entity Address, State or Province Entity Address, State or Province PEO Total Compensation Amount PEO Total Compensation Amount Common shares, par value (per share) Common Stock, Par or Stated Value Per Share Intangibles, net of accumulated amortization of $633.0 and $615.7, respectively Net carrying amount Intangible Asset, Excluding Goodwill, after Accumulated Amortization Amended term loan facility [Member] Amended term loan facility [Member] Amended term loan facility Interest rate swaps, notional amount Derivative, Notional Amount Weighted-average shares outstanding Weighted Average Number of Shares Outstanding, Basic Conditional right to receive consideration Contract with Customer, Asset, after Allowance for Credit Loss, Current Accumulated goodwill impairment charges Goodwill, Impaired, Accumulated Impairment Loss Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract] Long-term investments Long-Term Investments Reserve for excess and obsolete items Inventory Valuation Reserves Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Long-term receivables [Member] Notes Receivable [Member] Merchant Services [Member] Merchant Services [Member] Merchant Services Total current liabilities Liabilities, Current Entity Address, City or Town Entity Address, City or Town Supplemental cash flow information Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Assets held for sale Disposal Group, Including Discontinued Operation, Assets Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Product [Member] Product [Member] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Weighted-average interest rate at period end Line of Credit Facility, Interest Rate at Period End Cloud computing arrangements implementation costs Hosting Arrangement, Service Contract, Implementation Cost, Capitalized, after Accumulated Amortization Trade accounts receivable - gross Accounts Receivable, before Allowance for Credit Loss Significant other observable inputs (Level 2) [Member] Fair Value, Inputs, Level 2 [Member] Receivable [Domain] Receivable [Domain] Accumulated amortization Accumulated amortization Intangible Asset, Finite-Lived, Accumulated Amortization Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Net current-period other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Current portion of long-term debt Less: current portion of long-term debt, net of debt issuance costs Long-Term Debt, Current Maturities Total revenue benchmark [Member] Revenue Benchmark [Member] Other [Member] Other Restructuring [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Loans and notes receivable from distributors [Member] Loans and Finance Receivables [Member] Write-offs Financing Receivable, Allowance for Credit Loss, Writeoff New accounting pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Business segment information Segment Reporting [Table Text Block] Non-controlling interest [Member] Noncontrolling Interest [Member] Senior, unsecured notes [Member] Unsecured Debt [Member] Other comprehensive (loss) income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Accrued liabilities Schedule of Accrued Liabilities [Table Text Block] Long-term debt Long-Term Debt Long-term receivables, fair value Notes Receivable, Fair Value Disclosure Proceeds from debt offering, net of discount and debt issuance costs Proceeds from Debt, Net of Issuance Costs Customer lists/relationships [Member] Customer-Related Intangible Assets [Member] Document Period End Date Document Period End Date Changes in assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Other web based solutions [Member] Other Web Based Solutions [Member] Other Web Based Solutions Net cash used by investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Finished and semi-finished goods Inventory, Finished Goods and Work in Process, Gross Shareholders' equity Equity [Text Block] Security Exchange Name Security Exchange Name Effective interest rate Debt Instrument, Interest Rate, Effective Percentage Proceeds from sale of businesses and long-lived assets Proceeds from sale of businesses and long-lived assets Proceeds from Sales of Business, Affiliate and Productive Assets Consideration payable for asset purchases Consideration payable for asset purchases Represents the liability as of the balance sheet date for consideration payable for asset purchases. Unrestricted cash and cash equivalents minimum used to compute total leverage ratios LineOfCreditFacilityCovenantTotalLeverageCashRequirement This represents the threshold for unrestricted cash and cash equivalents used in determining compliance with debt covenants. Vesting of restricted stock unit awards Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] Settlement processing assets Restricted cash and restricted cash equivalents included in settlement processing assets Settlement Assets, Current Operating lease liabilities Operating Lease, Liability, Current Internal labor [Member] Internal labor [Member] Internal labor costs incurred as part of a restructuring or integration initiative. Interest Interest Payable, Current Trade accounts receivable Accounts Receivable, Allowance for Credit Loss [Table Text Block] Earnings per share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Unconditional right to receive consideration Unbilled Contracts Receivable Earnings Per Share [Abstract] Earnings Per Share [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Revenue disaggregated by product and service offerings Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Table Text Block] Trading Symbol Trading Symbol Purchases of capital assets Payments to Acquire Property, Plant, and Equipment Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Long-term receivables, allowance for credit losses [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Company Selected Measure Name Company Selected Measure Name Total reclassifications, net of tax Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Interest rate swaps, fixed interest rate Derivative, Fixed Interest Rate Long-term receivables, current portion Financing Receivable, after Allowance for Credit Loss, Current Stated interest rate Long-Term Debt, Percentage Bearing Fixed Interest, Percentage Rate Residual commission buy-out [Member] Residual commission buy-out [Member] Residual commission buy-out Postretirement benefit plans [Member] Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Total principal amount Long-Term Debt, Gross Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Compensation Amount Outstanding Recovery Compensation Amount Amortization of deferred contract acquisition costs Capitalized Contract Cost, Amortization Individual: Individual [Axis] Weighted-average shares and potential common shares outstanding Weighted Average Number of Shares Outstanding, Diluted Cash dividends per share Common Stock, Dividends, Per Share, Cash Paid Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Finance lease payments, 2028 Finance Lease, Liability, to be Paid, Year Two Disposal Group Name [Domain] Disposal Group Name [Domain] Long-term receivable originated in the current year Financing Receivable, Year One, Originated, Current Fiscal Year Underlying Security Market Price Change Underlying Security Market Price Change, Percent Finance lease payments, 2030 Finance Lease, Liability, to be Paid, Year Four Reversals Restructuring Reserve, Accrual Adjustment Money market fund Cash Equivalent, Money Market Fund, Carrying Value Divestitures Disposal Groups, Including Discontinued Operations [Table Text Block] Credit facility, commitment Line of Credit Facility, Current Borrowing Capacity Dilutive impact of potential common shares Weighted Average Number of Shares Outstanding, Diluted, Adjustment Other [Member] Other Intangible Assets [Member] Award Timing Predetermined Award Timing Predetermined [Flag] Outstanding letters of credit Letters of Credit Outstanding, Amount Securitization facility [Member] AR Securitization [Member] Collateralized debt obligation backed by certain accounts receivable accounts. Wages and payroll liabilities, including vacation Accrued wages and payroll liabilities Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, including accrued salaries, payroll taxes and employee withholdings. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Employee share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Restructuring and integration expense Restructuring operating expense Amount of expenses associated with exit or disposal activities pursuant to an authorized plan and classified as operating expenses on the statement of income. Quoted prices in active markets for identical assets Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Changes to goodwill Goodwill, Period Increase (Decrease) Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] All Executive Categories All Executive Categories [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Long-term debt, fair value Long-Term Debt, Fair Value Partner relationships [Member] Distribution Rights [Member] Components of net periodic benefit income Schedule of Net Benefit Costs [Table Text Block] Depreciation Depreciation Scenario [Domain] Scenario [Domain] Safeguard small business distributor channel [Member] Safeguard small business distributor channel [Member] Safeguard small business distributor channel Operating lease assets Operating Lease, Right-of-Use Asset Concentration Risk Type [Domain] Concentration Risk Type [Domain] Earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Net change in settlement processing obligations Net change in settlement processing liabilities Net increase (decrease) in settlement processing obligations during the period. Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Business segment information Segment Reporting [Text Block] Cash dividends paid to shareholders Payments of Ordinary Dividends, Common Stock Expiration Date Trading Arrangement Expiration Date Effect of exchange rate change on cash, cash equivalents, restricted cash, and restricted cash equivalents Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation B2B Payments [Member] B2B Payments [Member] Business to business payments Number of reportable segments not disclosed Flag NumberOfReportableSegmentsNotDisclosedFlag NumberOfReportableSegmentsNotDisclosedFlag Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Total shareholders' equity Balance, beginning of period Balance, end of period Equity, Including Portion Attributable to Noncontrolling Interest Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Unbilled receivables Unbilled Receivables, Current Acquisition and divestitures [Line Items] Disposal Group, Including Discontinued Operations [Line Items] Net periodic benefit income Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Common shares, shares authorized Common Stock, Shares Authorized Accumulated other comprehensive loss [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Nature of Operation, Product Information, Concentration of Risk [Table] Nature of Operation, Product Information, Concentration of Risk [Table] Current portion of long-term receivable originated in current year Current portion of long-term receivable originated in current fiscal year Current portion of amortized cost of financing receivable originated in current fiscal year. Exercise Price Award Exercise Price Restructuring Cost [Table] Restructuring Cost [Table] Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Fair Value, Recurring [Member] Fair Value, Recurring [Member] Business segment information [Line Items] Segment Reporting [Line Items] Document Quarterly Report Document Quarterly Report Schedule of Business Acquisitions, by Acquisition [Table] Disposal Groups, Including Discontinued Operations [Table] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Accrued liabilities Accrued Liabilities, Current [Abstract] Segment [Domain] Segments [Domain] Interest Rate Swap [Member] Interest Rate Swap [Member] Trade accounts receivable - net Accounts Receivable, after Allowance for Credit Loss Debt Debt Disclosure [Text Block] Scenario [Axis] Scenario [Axis] Long-term receivables Financing Receivable, after Allowance for Credit Loss Less: unamortized discount and debt issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Acquisition and divestitures Acquisition and divestitures The entire disclosure related to business combinations and disposals of businesses or long-lived assets. Restructuring and integration expense Restructuring and Related Costs [Table Text Block] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Amortization of prepaid product discounts Amortization of prepaid product discounts The amount of expense recognized in the current period that reflects the amortization of prepaid product discounts associated with acquisition of business. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Checks [Member] Checks revenue [Member] Revenue from the sale of checks. Equity Component [Domain] Equity Component [Domain] Debt covenant compliance Line of Credit Facility, Covenant Compliance PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Credit Facility Line of Credit Facility [Abstract] Senior, secured notes [Member] Secured Debt [Member] Accounts receivable Accounts Receivable, before Allowance for Credit Loss, Current Adoption Date Trading Arrangement Adoption Date Balance, beginning of period Balance, end of period Equity, Attributable to Parent Cash dividends ($0.30 per share for the quarters ended June 30, 2026 and 2025 and $0.60 per share for the six months ended June 30, 2026 and 2025) Dividends, Common Stock, Cash Operating expenses Restructuring Charges Operating Expenses This represents the restructuring charges reported as a part of operating expenses. Net assets sold Net Assets Disposed Amount of the net assets disposed of via divestiture. Other income, net Nonoperating Income (Expense) Restructuring Type [Axis] Restructuring Type [Axis] Postretirement benefit plan asset Assets for Plan Benefits, Defined Benefit Plan ASSETS Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Data-driven marketing [Member] Data-driven marketing solutions [Member] Data-driven marketing solutions Insider Trading Policies and Procedures [Line Items] Finance lease liability Finance Lease, Liability Balance, beginning of period Balance, end of period Accounts Receivable, Allowance for Credit Loss, Current Other Proceeds from (Payment for) Other Financing Activity Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Revolving credit facility Schedule of Line of Credit Facilities [Table Text Block] Deferred income taxes Deferred Income Tax Expense (Benefit) Selling, general and administrative expense Selling, General and Administrative Expense Payments on long-term debt and swingline loans Repayments of Debt Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Type of Restructuring [Domain] Type of Restructuring [Domain] Business Combination [Domain] Business Combination [Domain] Manufacturing facility [Member] Manufacturing Facility [Member] Letter of credit sub-facility [Member] Letter of Credit [Member] Other commitments and contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Antidilutive potential common shares excluded from calculation Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Restricted Stock Units (RSUs) [Member] Restricted Stock Units (RSUs) [Member] Goodwill Goodwill [Table Text Block] Entity Central Index Key Entity Central Index Key Accumulated depreciation Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization Net periodic benefit income Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] All Adjustments to Compensation All Adjustments to Compensation [Member] Corporate operations [Member] Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Business Combination [Axis] Business Combination [Axis] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Unrestricted cash and cash equivalents minimum used to compute secured leverage ratios LineOfCreditFacilityCovenantSecuredLeverageCashRequirement This represents the threshold for unrestricted cash and cash equivalents used in compliance with secured debt covenants. Other comprehensive loss before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Income Statement [Abstract] Income Statement [Abstract] Shareholders' equity: Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Deferred income taxes Deferred Income Tax Assets, Net BalanceSheetRelatedDisclosuresTable [Table] BalanceSheetRelatedDisclosuresTable [Table] Balance Sheet Related Disclosures Table Finance lease liabilities Finance Lease, Liability, Noncurrent Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Intangibles Intangible Asset, Finite-Lived [Table Text Block] Deferred revenue Deferred Revenue, Current Intangible Asset, Finite-Lived, Acquired [Table] Intangible Asset, Finite-Lived, Acquired [Table] City Area Code City Area Code Undiscounted lease payments, finance lease Finance Lease, Liability, to be Paid Accumulated other comprehensive loss [Member] Accumulated other comprehensive loss [Member] AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] Subsequent event Subsequent Events [Text Block] Name Forgone Recovery, Individual Name Balance Sheet Related Disclosures [Abstract] Balance Sheet Related Disclosures [Abstract] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Collection period for asset sale receivable Collection Period For Long Term Receivable The period of time over which payments on a long-term receivable are scheduled to be collected. Revenue in excess of billings Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract] Statement [Line Items] Statement [Line Items] Earnings per share - diluted: Earnings Per Share, Diluted, Two Class Method [Abstract] Total assets Assets Merchant services solutions [Member] Merchant services revenue [Member] Merchant services revenue Business Combination [Abstract] Accounting Standards Update and Change in Accounting Principle [Abstract] Accounting Standards Update and Change in Accounting Principle [Abstract] Amortization of prior service credit Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Operating segments [Member] Operating Segments [Member] External consulting and other costs [Member] External consulting and other costs [Member] External consulting and other costs incurred as part of a restructuring or integration initiative. Earnings per share - basic: Earnings Per Share, Basic, Two Class Method [Abstract] Other current and non-current assets Increase (Decrease) in Other Operating Assets PEO PEO [Member] 2028 Long-Term Debt, Maturity, Year Two Total debt, net of discount and debt issuance costs Debt, Long-Term and Short-Term, Combined Amount Self-insurance liabilities Self Insurance Reserve Other non-current liabilities Other Liabilities, Noncurrent Goodwill Goodwill, beginning of year Goodwill, end of period Goodwill Prepaid product discounts Prepaid product discount liability, current Carrying value as of the balance sheet date of the obligations incurred through that date and payable for amounts due for prepaid product discounts relating to the execution and/or renewal of contracts. Used to reflect the current portion of the liabilities. Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Disaggregated revenue information Product Information [Line Items] Long-term receivables, net of allowance for credit losses Financing Receivable, after Allowance for Credit Loss, Noncurrent Retained earnings [Member] Retained Earnings [Member] Operating lease liabilities Operating Lease, Liability, Noncurrent Senior, secured revolving credit facility [Member] Revolving Credit Facility [Member] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Common shares, shares outstanding Balance (in shares) Balance (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Currency translation adjustment [Member] Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Fair value of financial instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Diluted earnings per share Earnings per share - diluted Earnings Per Share, Diluted Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash used by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Trade accounts receivable Accounts Receivable, after Allowance for Credit Loss [Abstract] Total Shareholder Return Amount Total Shareholder Return Amount Other non-current assets Other Assets, Noncurrent [Abstract] Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] 2029 Long-Term Debt, Maturity, Year Three Write-offs and other Accounts Receivable, Allowance for Credit Loss, Writeoff Acquired intangibles Intangible Asset, Finite-Lived, Acquired Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Property, plant and equipment, net of accumulated depreciation of $361.4 and $376.0, respectively Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Net available for borrowing as of June 30, 2026 Line of Credit Facility, Remaining Borrowing Capacity Interest cost Defined Benefit Plan, Interest Cost Other payment solutions [Member] Other Payment Solutions Member [Member] Other Payment Solutions Member Changes in restructuring and integration accruals Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Maximum consolidated secured leverage ratio Maximum consolidated secured leverage ratio The maximum consolidated secured leverage ratio allowed under the entity's debt covenants. Amortization of postretirement benefit plan items, net of tax Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Underlying Securities Award Underlying Securities Amount Prepaid expenses Prepaid Expense, Current Payroll and human resources services business [Member] 541214 Payroll Services [Member] Amended credit facility agreement [Member] Amended credit facility agreement [Member] Amended credit facility agreement Number of customers Number of customers Number of customers Other Payment for (Proceeds from) Other Investing Activity Inventories and supplies Increase (Decrease) in Inventories Repayment amount due each quarter Debt Instrument, Periodic Payment, Principal Forms and other business products [Member] Forms and other products [Member] Forms and other products Segment Reporting [Table] Segment Reporting [Table] Maturities of long-term debt Schedule of Maturities of Long-Term Debt [Table Text Block] Swingline sub-facility [Member] Swingline sub-facility [Member] Swingline sub-facility Other current assets Other Assets, Current Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating income Operating Income (Loss) Acquisition transaction costs Acquisition transaction costs Business Combination, Separately Recognized Transaction, Acquisition-Related Cost, Expensed Service [Member] Service [Member] Current Fiscal Year End Date Current Fiscal Year End Date Proceeds from issuing long-term debt and swingline loans Proceeds from Issuance of Debt Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Uncorded Unconditional Purchase Obligation [Table] Unrecorded Unconditional Purchase Obligation [Table] Print [Member] Print [Member] Print Credit facility agreement [Member] Credit facility agreement [Member] Credit facility agreement Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Proceeds from company-owned life insurance policy Proceeds from Life Insurance Policy Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Common shares, shares issued Common Stock, Shares, Issued Measure: Measure [Axis] Finance lease term Lessee, Finance Lease, Term of Contract Equity Components [Axis] Equity Components [Axis] Trade accounts receivable Increase (Decrease) in Accounts Receivable Product and Service [Domain] Product and Service [Domain] Deferred contract acquisition costs Capitalized Contract Cost, Net Restructuring and integration (Note 8) Balance, December 31, 2025 Balance, June 30, 2026 Restructuring Reserve, Current Entity Interactive Data Current Entity Interactive Data Current Net income attributable to non-controlling interest Net income attributable to non-controlling interest Net Income (Loss) Attributable to Noncontrolling Interest Deferred income taxes Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Small Business Entity Small Business Total comprehensive income attributable to Deluxe Comprehensive Income (Loss), Net of Tax, Attributable to Parent Tax expense Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax Common shares issued, net of tax withholding (in shares) Stock Issued During Period Shares Net Of Tax Withheld Stock issued during the period net of shares withheld for payroll taxes. Termination Date Trading Arrangement Termination Date Acquired intangibles, weighted-average useful life (in years) Intangible Asset, Finite-Lived, Acquired, Weighted-Average Amortization Period Subsequent Events [Abstract] Federal statutory income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Celero Commerce [Member] Celero Commerce [Member] Celero Commerce Other non-current assets Other non-current assets Other Assets, Noncurrent Finance lease payments, 2029 Finance Lease, Liability, to be Paid, Year Three Document Type Document Type Debt settled Debt Instrument, Repurchased Face Amount Fair value measurements [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Total cost of revenue Restructuring Charges Cost Of Revenue This represents the restructuring charges reported as a part of the cost of revenue. Accrued liabilities Accrued liabilities Accrued Liabilities, Current Fair Value as of Grant Date Award Grant Date Fair Value Collateral pledged [Member] Collateral Pledged [Member] Holdback payments for acquired assets HoldbackPaymentsTo AcquireAssets The cash outflow associated with holdback payments made as part an agreement to acquire assets. Gain on sale of businesses and long-lived assets Gain on sale of businesses and long-lived assets Gain (Loss) on Disposition of Assets Goodwill [Table] Goodwill [Table] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Net proceeds TotalConsiderationFromSaleOfBusiness Represents the total consideration received from sale of busienss, including cash and amounts receivable. Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Commitments and contingencies [Line Items] Unrecorded Unconditional Purchase Obligation [Line Items] Supplemental balance sheet and cash flow information Additional Financial Information Disclosure [Text Block] Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Pledged Status [Domain] Pledged Status [Domain] Income before income taxes Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Commitments and contingencies (Note 12) Commitments and Contingencies Gross carrying amount Intangible Asset, Finite-Lived, before Accumulated Amortization Total revenue Revenue Revenues Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Gain (loss) on exit from joint venture Equity Method Investment, Realized Gain (Loss) on Disposal 2030 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] Receivable Type [Axis] Receivable Type [Axis] Goodwill [Roll Forward] Goodwill [Roll Forward] LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities and Equity [Abstract] Amounts reclassified from accumulated other comprehensive loss Reclassification adjustments [Abstract] Reclassification adjustments from accumulated other comprehensive income Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Inventories and supplies, net of reserve Inventories and supplies, net of reserve Inventory, Net All Award Types Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Fair value measurements Fair Value Disclosures [Text Block] Significant unobservable inputs (Level 3) [Member] Fair Value, Inputs, Level 3 [Member] Supplemental cash flow information Supplemental Cash Flow Information [Abstract] 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One Amortization of cloud computing arrangement implementation costs Hosting Arrangement, Service Contract, Implementation Cost, Capitalized, Amortization Expense PEO Name PEO Name Other segment items Segment Reporting, Other Segment Item, Amount Long-Lived Asset, Class [Axis] Long-Lived Asset, Class [Axis] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Changes in allowance for credit losses Accounts Receivable, Allowance for Credit Loss [Roll Forward] Common shares issued, net of tax withholding Stock Issued During Period Value Net Of Tax Withheld Value of stock issued during the period, net of shares withheld for payroll taxes. Payments Payments for Restructuring Cash, cash equivalents, restricted cash, and restricted cash equivalents, beginning of year Cash, cash equivalents, restricted cash, and restricted cash equivalents, end of period (Note 3) Total cash, cash equivalents, restricted cash, and restricted cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Accounts payable Increase (Decrease) in Accounts Payable Other Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Reclassification adjustments Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Consolidated financial statements Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Total comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument [Axis] Debt Instrument [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] Purchase price Payments to Acquire Businesses, Gross Employee share-based compensation expense Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Data Solutions [Member] Data Solutions [Member] Data Solutions reportable business segment Leverage ratio requirements Debt Covenants [Table Text Block] Tabular disclosure of information regarding debt covenant requirements. Consolidated total leverage ratio limiting permitted payments Consolidated total leverage ratio limiting permitted payments The consolidated total leverage ratio at which permitted payments are limited under the entity's debt covenants. Disposal Group Name [Axis] Disposal Group Name [Axis] Debt outstanding Schedule of Debt [Table Text Block] Customer [Domain] Customer [Domain] Inventories and supplies Schedule of Inventory, Current [Table Text Block] 2027 Long-Term Debt, Maturity, Year One Basic earnings per share Earnings per share - basic Earnings Per Share, Basic Total current assets Assets, Current Insider Trading Arrangements [Line Items] Annual share repurchase limitation AnnualShareRepurchaseLimitation The annual limitation on share repurchases under the terms of the company's credit facility. Long-term debt Long-Term Debt, Excluding Current Maturities Total cost of revenue Cost of Revenue Award Type Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Trade accounts receivable, net of allowance for credit losses Accounts Receivable, after Allowance for Credit Loss, Current Retained earnings Retained Earnings (Accumulated Deficit) Senior, secured and unsecured notes Senior Notes [Abstract] Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Product and Service [Axis] Product and Service [Axis] Non-current restricted cash included in other non-current assets Restricted Cash, Noncurrent Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common shares par value [Member] Common Stock [Member] Employee severance benefits [Member] Employee Severance [Member] Operating lease expense Operating Lease, Cost Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Senior, secured term loan facility [Member] Term loan facility [Member] Term loan facility Internal-use software [Member] Internal-use Computer Software Intangible Asset [Member] Collection of computer programs and related data that provide instructions to a computer, for example, but not limited to, application program, control module or operating system, that perform one or more particular functions or tasks. This element includes internal-use software only. Comparability Reclassification, Comparability Adjustment [Policy Text Block] Estimated future amortization expense Intangible Asset, Finite-Lived, after Accumulated Amortization, Estimated Amortization Expense, Fiscal Year Maturity [Abstract] Concentration risk, percentage Concentration Risk, Percentage Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] Total liabilities and shareholders' equity Liabilities and Equity Employee Stock Option Share-Based Payment Arrangement, Option [Member] Non-controlling interest Equity, Attributable to Noncontrolling Interest Business Segments [Axis] Segments [Axis] Other accrued and non-current liabilities Increase (Decrease) in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Restructuring and integration expense Charges Restructuring and integration expense Restructuring Charges Inventories and supplies Inventory Disclosure [Abstract] Tabular List, Table Tabular List [Table Text Block] Certain legal, environmental and other expense Loss Contingency Accrual, Loss (Reversal of Loss) Additional paid-in capital Additional Paid in Capital 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three Total amortization Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax Remainder of 2026 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Remainder of Fiscal Year Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Promotional solutions [Member] Promotional solutions revenue [Member] Promotional solutions revenue Discount rate, finance lease Lessee, Finance Lease, Discount Rate Long-Lived Asset, Class [Domain] Long-Lived Asset, Class [Domain] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Prepaid product discount payments Prepaid product discount payments Amounts paid during the reporting period for prepaid product discounts associated with the execution and/or renewal of customer contracts. Raw materials and supplies Inventory, Raw Materials and Supplies, Gross Amended revolving credit facility [Member] Amended revolving credit facility [Member] Amended revolving credit facility Employee bonuses, including sales incentives Accrued Bonuses, Current Adjustment to Compensation: Adjustment to Compensation [Axis] Amounts reclassified from accumulated other comprehensive loss Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Restructuring and integration expense [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Restructuring and integration expense Restructuring and Related Activities Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Finance lease payments, 2031 Finance Lease, Liability, to be Paid, Year Five Securitization facility Other Long-Term Debt [Abstract] Name Measure Name Deferred revenue recognized Deferred Revenue, Revenue Recognized Income taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Other non-cash items, net Other Noncash Income (Expense) Debt instruments [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Additional paid-in capital [Member] Additional Paid-in Capital [Member] Settlement processing obligations Settlement Liabilities, Current Entity Filer Category Entity Filer Category Restructuring charges, net Restructuring charges, net Amount of expenses associated with exit or disposal activities pursuant to an authorized plan, net of reversals. BalanceSheetRelatedDisclosureLineItems [Line Items] BalanceSheetRelatedDisclosureLineItems [Line Items] BalanceSheetRelatedDisclosureLineItems Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Reconciliation of adjusted EBITDA to income before income taxes Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Table Text Block] Depreciation and amortization expense Depreciation, Depletion and Amortization Net income Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Finance lease assets obtained in exchange for finance lease obligations Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Current assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Net actuarial loss Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax Entity Address, Address Line One Entity Address, Address Line One Income tax provision Income Tax Expense (Benefit) Customer concentration risk [Member] Customer Concentration Risk [Member] Technology-based intangibles [Member] Technology-Based Intangible Assets [Member] Award Timing Method Award Timing Method [Text Block] Net change in cash, cash equivalents, restricted cash, and restricted cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forecast [Member] Forecast [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Prepaid product discounts Prepaid product discounts Up-front payments for prepaid product discounts associated with the execution and/or renewal of customer contracts which are reported as assets net of accumulated amortization. Major Customers [Member] MajorCustomersMember [Member] MajorCustomersMember Amortization of net actuarial losses Defined Benefit Plan, Amortization of Gain (Loss) New accounting pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Net income attributable to Deluxe Net income attributable to Deluxe Net Income (Loss) Attributable to Parent Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Accumulated other comprehensive loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Revenue in excess of billings Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Recoveries Financing Receivable, Allowance for Credit Loss, Recovery Minimum interest coverage ratio Minimum interest coverage ratio The minimum interest coverage ratio allowed under the entity's debt covenants. Customer rebates Customer rebates Carrying amount as of the balance sheet date of the liability for rebates provided to customers on the sale of goods and services that are expected to be settled within one year. Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]