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Earnings per share: Earnings Per Share [Abstract] Fiscal 2031 Lessee, Operating Lease, Liability, to be Paid, Year Five Restructuring Plan [Axis] Restructuring Plan [Axis] Other (income) expense, net Nonoperating Income (Expense) Percentage of total revenue Number Of Businesses Which Recognize Revenue Following The Over-Time Output Method, Percent Of Total Revenue Number Of Businesses Which Recognize Revenue Following The Over-Time Output Method, Percent Of Total Revenue First Two Percent First Two Percent [Member] First Two Percent Deduction for foreign derived intangible income Effective Income Tax Rate Reconciliation, FDII, Percent Contract liabilities Increase (Decrease) in Contract with Customer, Liability Share repurchases (in shares) Treasury Stock, Shares, Acquired Award Timing Disclosures [Line Items] Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Renewal term Lessee, Operating Lease, Renewal Term Accrued post-judgment interest Payments for Legal 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Date Trading Arrangement Adoption Date Base Rate Base Rate [Member] Contract assets Contract with Customer, Asset, after Allowance for Credit Loss Lease term Lessee, Operating Lease, Term of Contract Customer relationships Customer Relationships [Member] Operating income Operating income Operating Income (Loss) Line of Credit Line of Credit [Member] Retained earnings Retained Earnings (Accumulated Deficit) International Painters and Allied Trades Industry Pension Fund International Painters and Allied Trades Industry Pension Fund [Member] International Painters and Allied Trades Industry Pension Fund 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] Impairment Expense Impairment Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill) Incremental cost Share-Based Payment Arrangement, Plan Modification, Incremental Cost 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[Domain] Variable Rate [Domain] Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract] Contract liabilities Contract with Customer, Liability All Adjustments to Compensation All Adjustments to Compensation [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Amendment Flag Amendment Flag Estimated Fair Value Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] Number of shares authorized for issuance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Termination Date Trading Arrangement Termination Date Contract assets Increase (Decrease) in Contract with Customer, Asset Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Raw materials Inventory, Raw Materials, Net of Reserves Receivable [Domain] Receivable [Domain] Share-Based Payment Arrangement, Tranche Three Share-Based Payment Arrangement, Tranche Three [Member] Defined Contribution Plan Employer Contribution Match Level Based On Employee Contribution [Domain] Defined Contribution Plan Employer Contribution Match Level Based On Employee Contribution [Domain] [Domain] for Defined Contribution Plan Employer Contribution Match Level Based On Employee Contribution [Axis] Weighted-average discount rate - operating leases Operating Lease, Weighted Average Discount Rate, Percent Net sales Business Combination, Acquiree's Revenue since Acquisition Date, Actual Income tax penalties and interest accrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Weighted average basic shares outstanding (in shares) Basic earnings per share - weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Tax benefits that if recognized would decrease the effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Net Indefinite-lived Intangible Assets (Excluding Goodwill), Net of Translation Adjustments Indefinite-lived Intangible Assets (Excluding Goodwill), Net of Translation Adjustments Schedule of Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] Amortization of acquired backlog Amortization of Acquisition Costs Debt Disclosure [Abstract] Debt Disclosure [Abstract] Scenario [Domain] Scenario [Domain] Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive 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Reconciliation, Cross-Border Tax Effect, Amount Accounting estimates Use of Estimates, Policy [Policy Text Block] Current liabilities Liability, Defined Benefit Plan, Current Foreign Currency Translation Finite-Lived Intangible Assets, Foreign Currency Translation Gain (Loss) Amount awarded to claimant Litigation Settlement, Amount Awarded to Other Party Percentage of total revenue Percentage Of Total Revenue Percentage Of Total Revenue Insider Trading Arrangements [Line Items] Performance Surfaces Performance Surfaces [Member] Performance Surfaces Accounting Policies [Table] Accounting Policies [Table] Accounting Policies [Table] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Gross increases based on tax positions related to the current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Acquisition holiday Debt Instrument, Covenant, Acquisition Holiday Debt Instrument, Covenant, Acquisition Holiday Sales/maturities of marketable securities Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Variable Rate [Axis] Variable Rate [Axis] Consolidation Items [Axis] Consolidation Items [Axis] Project Fortify Project Fortify [Member] Project Fortify Deferred tax liabilities Components of Deferred Tax Liabilities [Abstract] Estimated Fair Value Total Municipal bonds Debt Securities, Available-for-Sale Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member]