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[Axis] Total stockholders’ equity Beginning balance Ending balance Stockholders' Equity Attributable to Parent Common stock, shares issued (shares) Common Stock, Shares, Issued Preferred stock, shares issued (shares) Preferred Stock, Shares Issued Interest expense, net Interest expense, net Interest Revenue (Expense), Net Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Fiscal 2021 Acquisitions Fiscal 2021 Acquisitions [Member] Fiscal 2021 Acquisitions Repurchases of common stock Payments for Repurchase of Common Stock Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Changes in each component of accumulated other comprehensive loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Long-term operating lease liabilities Operating Lease, Liability, 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Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] New Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Income tax expense Income Tax Expense (Benefit) Other Current Liabilities [Table] Other Current Liabilities [Table] Other Current Liabilities Accounts receivable, less reserve for doubtful accounts of $1.0 and $1.2, respectively Accounts Receivable, after Allowance for Credit Loss, Current Unsecured debt Unsecured Debt [Member] Issuance of long-term debt Proceeds from Issuance of Long-term Debt Equity Components [Axis] Equity Components [Axis] Number of statements used as basis for dismissing claims Loss Contingency, Claims Dismissed, Number Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Total current assets Assets, Current 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amortization, issuances, and cancellations Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Debt Disclosure [Abstract] Debt Disclosure [Abstract] Entity Address, State or Province Entity Address, State or Province Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Non-current deferred revenues Contract with Customer, Liability, Noncurrent Corporate Corporate, Non-Segment [Member] Segment Reporting [Abstract] Entity [Domain] Entity [Domain] ABL Acuity Brands Lighting, Inc. [Member] Acuity Brands Lighting, Inc. Pension Plans Retirement Benefits [Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Entity Shell Company Entity Shell Company Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Local Phone Number Local Phone Number Other comprehensive (loss) income items, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Components of share-based payment expense Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Total assets Assets Common stock, shares authorized (shares) Common Stock, Shares Authorized Interest paid during the period Interest Paid, Excluding Capitalized Interest, Operating Activities Interest rate (percent) Debt Instrument, Interest Rate, Stated Percentage Credit facility Revolving Credit Facility [Member] 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Diluted Shares Outstanding Adjustment Service cost Defined Benefit Plan, Service Cost Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Goodwill expected to be tax deductible Business Acquisition, Goodwill, Expected Tax Deductible Amount Prior service cost Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] Net cash used for financing activities Net Cash Provided by (Used in) Financing Activities Treasury stock, at cost, of 19,127,037 and 18,826,611 shares, respectively Treasury Stock, Value Deferred income taxes Deferred Income Tax Liabilities, Net Building classified as held for sale Disposal Group, Including Discontinued Operation, Number of Assets Disposal Group, Including Discontinued Operation, Number of Assets Schedule of tax expense or benefit allocated to each component of other comprehensive income (loss) Comprehensive Income (Loss) [Table Text Block] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Basic earnings per share (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Fair Value Measurements Fair Value Disclosures [Text Block] Special charges Restructuring Charges Accounts payable Accounts Payable, Current Concentration Risk Type [Axis] Concentration Risk Type [Axis] Depreciation and amortization Depreciation and amortization Depreciation, Depletion and Amortization Amortization expense in fiscal 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Three Accrual related to the securities class action matter Estimated Litigation Liability, Current Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Amortization expense in fiscal 2022 Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Inventories Increase (Decrease) in Inventories Cost of products sold Cost of Goods and Services Sold Share-based payment amortization, issuances, and cancellations (shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Schedule of Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Term of instrument Debt Instrument, Term Held-for-sale Disposal Group, Held-for-sale, Not Discontinued Operations [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Property, plant, and equipment, net Property, plant, and equipment, net Property, Plant and Equipment, Net Property, Plant, and Equipment Property, Plant and Equipment Disclosure [Text Block] Other long-term liabilities Other Liabilities, Noncurrent Standard warranty term Standard Product Warranty Period Standard Product Warranty Period Debt Instrument [Line Items] Debt Instrument [Line Items] Repayments of long-term debt Repayments of Long-term Debt Earnings per share: Earnings Per Share [Abstract] Earnings Per Share [Abstract] Total property, plant, and equipment, at cost Property, Plant and Equipment, Gross Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Inventories excluding reserves Inventory, Gross Document Quarterly Report Document Quarterly Report Amounts reclassified from accumulated other comprehensive loss Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Additional borrowing capacity under revolving credit facility Line of Credit Facility, Current Borrowing Capacity Finished goods Inventory, Finished Goods, Gross Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Long-term debt Long-term Debt, 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Interest Payable, Current Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Current Fiscal Year End Date Current Fiscal Year End Date Corporate accounts Sales Channel, Through Corporate Accounts Network [Member] Sales Channel, Through Corporate Accounts Network [Member] Interest Revenue (Expense), Net [Abstract] Interest Revenue (Expense), Net [Abstract] Applicable margins based on company's leverage ratio, percentage Debt Instrument, Basis Spread on Variable Rate Changes in Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Schedule of Net Periodic Pension Cost Schedule of Net Benefit Costs [Table Text Block] Freight costs Freight Costs, Current Freight Costs, Current Measurement Basis [Axis] Measurement Basis [Axis] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Statement of Cash Flows [Abstract] Statement of Cash Flows 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in violation Loss Contingency, Number of Defendants Maximum leverage ratio Line of Credit Facility, Covenant Terms, Leverage Ratio, Maximum Line of Credit Facility, Covenant Terms, Leverage Ratio, Maximum Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Title of 12(b) Security Title of 12(b) Security New Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Total number of statements challenged in the Consolidated Complaint Loss Contingency, New Claims Filed, Number Statistical Measurement [Axis] Statistical Measurement [Axis] Cover [Abstract] Cover [Abstract] Goodwill Goodwill, Beginning Balance Goodwill, Ending Balance Goodwill Beginning balance Ending balance Standard Product Warranty Accrual Other Current Liabilities [Line Items] Other Current Liabilities [Line Items] Other Current Liabilities Schedule of Goodwill Schedule of Goodwill [Table Text Block] Adjustments to reconcile net income to net cash flows from operating activities: 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