EIN # Entity Tax Identification Number Total investments at fair value EBP, Investment, Fair Value Rollover EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Maximum Maximum [Member] Plan expenses paid using forfeited nonvested accounts EBP, Forfeited Nonvested Account, Decrease from Administrative Expense USW Local Nos. 4, 105, and 525 associates hired on or after August 5, 2002 USW Local Nos. 4, 105, and 525 Associates Hired On Or After August 5, 2002 [Member] USW Local Nos. 4, 105, and 525 Associates Hired On Or After August 5, 2002 EBP Plans EBP Plans [Member] EBP Plans Legal Entity [Axis] Legal Entity [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Vesting service period of the employer contributions EBP, Employer Contribution Vesting Service Period Minimum Vesting service period for company contribution and/ or investment earning to the participant in Company Matching Contributions, Fixed Rate Contributions, Discretionary Profit-Sharing Contributions, Qualified Non-Elective Contributions, and Disability Contributions. EBP, Description of Plan [Table] EBP, Description of Plan [Table] Mutual funds Mutual Fund [Member] Total Fully Corrected Under VFCP and PTE 2002-51 EBP, Schedule of Delinquent Participant Contribution, Corrected Basis spread on variable rate of loans EBP, Participant Loan, Basis Spread On Variable Rate EBP, Participant Loan, Basis Spread On Variable Rate Unallocated cash EBP, Unallocated Cash EBP, Unallocated Cash Payment period upon termination of service due to death, disability or retirement EBP, Employer Contribution Payment Period Upon Termination Of Service Due To Death, Disability Or Retirement EBP, Employer Contribution Payment Period Upon Termination Of Service Due To Death, Disability Or Retirement Maximum annual compensation to total compensation percentage EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage EBP, Fully Benefit-Responsive Investment Contract [Table] EBP, Fully Benefit-Responsive Investment Contract [Table] Nationwide Life Insurance EBP, Synthetic Investment Contract, Nationwide Life Insurance [Member] EBP, Synthetic Investment Contract, Nationwide Life Insurance Self-directed brokerage accounts EBP, Self-Directed Brokerage Account [Member] Total deductions EBP, Change in Net Asset Available for Benefit, Decrease Note receivable from participant, maximum borrowing amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount Fair Value Measurements EBP, Investment, Fair Value and NAV [Text Block] Maximum borrowing term of residential loans EBP, Note Receivable from Participant, Account, Residential Loans, Maximum Borrowing Term EBP, Note Receivable from Participant, Account, Residential Loans, Maximum Borrowing Term Accrued expenses EBP, Accrued Expense EBP, Fully Benefit-Responsive Investment Contract [Abstract] Total investments at fair value EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value EBP 033 EBP 033 [Member] EBP 033 Maximum number of general purpose loans a participant is allowed EBP, Note Receivable from Participant, Account, Maximum Number Of General Purpose Loans EBP, Note Receivable from Participant, Account, Maximum Number Of General Purpose Loans Plan’s Interest in Master Trust Balances EBP, Nonconsolidated, Plan Interest in Master Trust [Member] Level 1 Fair Value, Inputs, Level 1 [Member] Reconciliation of Financial Statement to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Table Text Block] EBP 070 EBP 070 [Member] EBP 070 Mass Mutual EBP, Synthetic Investment Contract, Mass Mutual [Member] EBP, Synthetic Investment Contract, Mass Mutual Stable Value Investments EBP, Fully Benefit-Responsive Investment Contract [Text Block] EBP, Investment, Fair Value and NAV [Abstract] Total assets EBP, Asset Assets: EBP, Asset [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis] Additions to net assets: EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Payments EBP, Payment to Participant [Policy Text Block] Plan transfers in (out), net EBP, Change in Net Asset Available for Benefit, Transfer to (from) Plan EBP, Master Trust [Line Items] EBP, Master Trust [Line Items] Total liabilities EBP, Liability Voya EBP, Synthetic Investment Contract, Voya [Member] EBP, Synthetic Investment Contract, Voya Amendment Flag Amendment Flag Basis of Accounting EBP, Basis of Accounting [Policy Text Block] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Crediting interest rate EBP, Investment, Interest Rate EBP, Description of Plan and Accounting Change [Abstract] Receivables: EBP, Receivable [Abstract] EBP, Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Table Text Block] EBP, Contribution, Participating Employer [Domain] EBP, Contribution, Participating Employer [Domain] Investments [Domain] Investments [Domain] EBP, Schedule of Delinquent Participant Contribution [Abstract] EBP, Schedule of Delinquent Participant Contribution [Abstract] EBP, Master Trust [Abstract] Use of Estimates EBP, Use of Estimate [Policy Text Block] Schedule H, Line 4i – Schedule of Assets (Held At End of Year) EBP, Schedule of Asset Held for Investment [Text Block] Cover [Abstract] EBP, Contribution, Participating Employer [Axis] EBP, Contribution, Participating Employer [Axis] Cash EBP, Cash [Member] EBP, Cash Risks and Uncertainties EBP, Risk and Uncertainty [Text Block] EBP, Schedule of Delinquent Participant Contribution [Line Items] EBP, Schedule of Delinquent Participant Contribution [Line Items] Synthetic GICs EBP, Synthetic Investment Contract [Member] Minimum Minimum [Member] Accrued income and pending trades EBP, Investment Income, Receivable Investment Type [Axis] Investment Type [Axis] Interest income on notes receivable EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Participant EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover Maximum borrowing term of general purpose loans EBP, Note Receivable from Participant, Account, General Purpose Loans, Maximum Borrowing Term EBP, Note Receivable from Participant, Account, General Purpose Loans, Maximum Borrowing Term Net investment gain from Acuity DC Trust Net appreciation in investment EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] Percentage of plan's net assets invested in employer common stock EBP, Investment, Employer, Common Stock, To Net Asset, Percentage EBP, Investment, Employer, Common Stock, To Net Asset, Percentage Plan No. EBP, Plan Number EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] Description of the Plans EBP, Description of Plan [Text Block] Contributions Pending Correction in VFCP EBP, Schedule of Delinquent Participant Contribution, Pending Correction in VFCP Maximum number of residential loans a participant is allowed EBP, Note Receivable from Participant, Account, Maximum Number Of Residential Loans EBP, Note Receivable from Participant, Account, Maximum Number Of Residential Loans EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] Increase from interest income on investment EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Investment EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] Contributions EBP, Contribution [Policy Text Block] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Domain] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Domain] EBP, Schedule of Asset Held for Investment [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] Total additions EBP, Change in Net Asset Available for Benefit, Increase Teamsters Local Union 673, IBEW Local 1245, IBEW Local 953, and non-union hourly associates Teamsters Local Union 673, IBEW Local 1245, IBEW Local 953, And Non-Union Hourly Associates [Member] Teamsters Local Union 673, IBEW Local 1245, IBEW Local 953, And Non-Union Hourly Associates Expenses EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Fund at contract value Contract value EBP, Investment, Contract Value Document Information [Line Items] Document Information [Line Items] EBP, Risk and Uncertainty [Line Items] EBP, Risk and Uncertainty [Line Items] EBP 067 EBP 067 [Member] EBP 067 EBP, Risk and Uncertainty [Table] EBP, Risk and Uncertainty [Table] Acuity DC Trust EBP, Master Trust [Text Block] Participant contribution compensation percentage matched EBP, Employer Contribution, Participant Compensation Matched, Percentage EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Invesco Stable Value Fund at contract value Value Funds [Member] Value Funds Net increase before transfers EBP, Change In Net Asset Available For Benefit, Increase (Decrease), Before Transfers To (From) Plan EBP, Change In Net Asset Available For Benefit, Increase (Decrease), Before Transfers To (From) Plan Participant catch-up contribution, age EBP, Participant Catch-up Contribution, Age EBP, Participant Catch-up Contribution, Age EBP, Fully Benefit-Responsive Investment Contract [Line Items] EBP, Fully Benefit-Responsive Investment Contract [Line Items] Employer EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash Contributions Corrected Outside VFCP EBP, Schedule of Delinquent Participant Contribution, Corrected Outside VFCP EBP, Tax Status [Table] EBP, Tax Status [Table] Net increase EBP, Change in Net Asset Available for Benefit, Increase (Decrease) EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] Total receivables EBP, Receivable Conversion from other qualified plans EBP, Change In Net Asset Available For Benefit, Conversion EBP, Change In Net Asset Available For Benefit, Conversion Employer contributions EBP, Employer Contribution, Receivable Automatic enrollment contribution percentage EBP, Participant Contribution, Automatic, Deferral Rate Increase from dividend income on investment EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment Benefit payments EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Plan interest in Acuity DC Trust EBP, Investment, Plan Interest in Master Trust, Fair Value Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] EBP, Statement of Net Asset Available for Benefit [Abstract] EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] Key Guaranteed Portfolio Fund at contract value Portfolio Funds [Member] Portfolio Funds Total conversions and transfers EBP, Change In Net Asset Available For Benefit, Conversion And Transfer To (From) Plan EBP, Change In Net Asset Available For Benefit, Conversion And Transfer To (From) Plan EBP, Tax Status [Abstract] Acuity stock fund EBP, Employer, Common Stock Fund [Member] EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Table] Contract Values of the Synthetic GIC's in the Invesco Stable Value Fund EBP, Fully Benefit-Responsive Investment Contract [Table Text Block] Basis for Determining Company Contributions EBP, Contribution [Table Text Block] Maximum discretionary suspension period of loan repayment due to leave of absence EBP, Note Receivable from Participant, Account, Loan Repayment Maximum Discretionary Suspension Period EBP, Note Receivable from Participant, Account, Loan Repayment Maximum Discretionary Suspension Period EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] Expenses EBP, Expense [Policy Text Block] IBEW Local 613, IBEW Local 1048, IBEW Local 1710, and teamsters Local Union 728 associates IBEW Local 613, IBEW Local 1048, IBEW Local 1710, And Teamsters Local Union 728 Associates [Member] IBEW Local 613, IBEW Local 1048, IBEW Local 1710, And Teamsters Local Union 728 Associates Benefits Payable EBP, Reconciliation of Financial Statement to Form 5500 [Text Block] Current Value EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Investments EBP, Investment [Policy Text Block] Acquisitions EBP, Acquisitions [Text Block] EBP, Acquisitions EBP, Master Trust [Table] EBP, Master Trust [Table] Participant contributions EBP, Participant Contribution, Receivable EBP, Schedule of Allocation, Income and Change in Plan Equity [Abstract] Document Type Document Type Entity Central Index Key Entity Central Index Key Asset held for investment, participant loan, interest rate EBP, Asset Held for Investment, Participant Loan, Interest Rate USW Local Nos. 4, 105, and 525 associates hired prior to August 5, 2002 USW Local Nos. 4, 105, and 525 Associates Hired Prior To August 5, 2002 [Member] USW Local Nos. 4, 105, and 525 Associates Hired Prior To August 5, 2002 EBP, Reconciliation of Financial Statement to Form 5500 [Abstract] Common/collective trusts Common Collective Trust [Member] Net assets available for benefits: EBP, Net Asset Available for Benefit [Abstract] EBP, Schedule of Allocation, Income and Change in Plan Equity [Line Items] EBP, Schedule of Allocation, Income and Change in Plan Equity [Line Items] EBP, Risk and Uncertainty [Abstract] EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] Deductions from net assets: EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Decrease in employer contributions from forfeited nonvested accounts EBP, Forfeited Nonvested Account, Decrease from Employer Contribution Notes receivable from participants EBP, Note Receivable from Participant Master Trust Master Trust Balances EBP, Nonconsolidated, Master Trust [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Summary of Accounting Policies EBP, Summary of Accounting Policy [Text Block] Entity Registrant Name Entity Registrant Name Schedule of Fair Value of Net Assets of the Acuity DC Trust EBP, Master Trust [Table Text Block] Liabilities: EBP, Liability [Abstract] Transfers: EBP, Change In Net Asset Available For Benefit, Transfer [Abstract] EBP, Change In Net Asset Available For Benefit, Transfer Prudential Insurance EBP, Synthetic Investment Contract, Prudential Insurance [Member] EBP, Synthetic Investment Contract, Prudential Insurance Schedule H, Line 4a - Schedule of Delinquent Participant Contributions EBP, Schedule of Delinquent Participant Contribution [Text Block] EBP, Schedule of Delinquent Participant Contribution [Table] EBP, Schedule of Delinquent Participant Contribution [Table] Cost EBP, Investment, Excluding Plan Interest in Master Trust, Cost Income Tax Status EBP, Tax Status [Text Block] Note receivable from participant, maximum borrowing as a percentage of vested balance EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Document Information [Table] Document Information [Table] Acuity DC Trust at fair value EBP, Asset, Fair Value EBP, Asset, Fair Value Notes Receivable from Participants EBP, Note Receivable from Participant [Policy Text Block] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Axis] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Axis] Benefit payments approved for payment but not paid EBP, Reconciliation to Form 5500, Payment to Participant, Increase from Allocation to Withdrawing Participant, Not yet Paid Contributions Not Corrected EBP, Schedule of Delinquent Participant Contribution, Not Corrected Pacific Life Insurance EBP, Synthetic Investment Contract, Pacific Life Insurance [Member] EBP, Synthetic Investment Contract, Pacific Life Insurance Net assets available for benefits Beginning of year End of year EBP, Net Asset Available for Benefit Entity [Domain] Entity [Domain] Participant maximum loan balance reduction period EBP, Note Receivable From Participant, Account, Maximum Borrowing, Period Balance Reduced EBP, Note Receivable From Participant, Account, Maximum Borrowing, Period Balance Reduced EBP, Schedule of Allocation, Income and Change in Plan Equity [Table] EBP, Schedule of Allocation, Income and Change in Plan Equity [Table] Contributions: EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Invesco Stable Value Fund at contract value EBP, Investment, Excluding Plan Interest in Master Trust, Contract Value Employer matching contribution percentage EBP, Employer Contribution, Matching Percentage Forfeited nonvested accounts EBP, Forfeited Nonvested Account Transamerica EBP, Synthetic Investment Contract, Transamerica [Member] EBP, Synthetic Investment Contract, Transamerica EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items]