XML 103 R80.htm IDEA: XBRL DOCUMENT
v3.24.3

Pension and Defined Contribution Plans - Narrative (Details) |  | 12 Months Ended
--- | --- | ---
Aug. 31, 2024 USD ($) multiemployer_plan plan | Aug. 31, 2024 USD ($) multiemployer_plan | Aug. 31, 2023 USD ($) | Aug. 31, 2022 USD ($)
Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Percentage of plan assets (percent) | 10.00% | 10.00% |  |
Number of multi-employer plans | multiemployer_plan | 2 | 2 |  |
Contributions to multi-employer plans |  | $ 500,000 | $ 500,000 | $ 500,000
Defined Contribution Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined contribution plan, cost recognized |  | 11,700,000 | $ 11,100,000 | $ 10,500,000
Common stock included in defined contribution plan, market value | $ 10,300,000 | $ 10,300,000 |  |
Common stock included in defined contribution plan as percentage of total fair value of assets in plan |  | 1.90% |  |
Domestic Plans |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Number of pension plans terminated | plan | 1 |  |  |
Domestic Plans | Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Reduction in net periodic pension cost per 100 basis point increase in benefit obligation discount rate |  | $ 400,000 |  |
Additional net periodic pension cost per 100 basis point decrease in expected return on plan assets rate |  | 1,300,000 |  |
Employer expected contribution to defined benefit plans in next fiscal year | $ 0 | $ 0 |  |
Domestic Plans | Pension Plan | Fixed income securities |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Targeted asset allocation, percentage | 95.00% | 95.00% |  |
Domestic Plans | Pension Plan | Equity securities |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Targeted asset allocation, percentage | 5.00% | 5.00% |  |
International Plans | Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Reduction in net periodic pension cost per 100 basis point increase in benefit obligation discount rate |  | $ 500,000 |  |
Additional net periodic pension cost per 100 basis point decrease in expected return on plan assets rate |  | 300,000 |  |
Employer expected contribution to defined benefit plans in next fiscal year | $ 100,000 | $ 100,000 |  |
International Plans | Pension Plan | Fixed income securities |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Targeted asset allocation, percentage | 93.00% | 93.00% |  |
International Plans | Pension Plan | Multi-strategy investments |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Targeted asset allocation, percentage | 7.00% | 7.00% |  |

X
- Definition Defined Benefit Plan, Actuarial Gains (Losses) Threshold, Percentage of Plan Assets + References No definition available. + Details
Name: | ayi_DefinedBenefitPlanActuarialGainsLossesThresholdPercentageOfPlanAssets
Namespace Prefix: | ayi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Defined Benefit Plan, Estimated Net Periodic Benefit Cost Decrease, Per 100 Basis Point Increase In Discount Rate, Benefit Obligation + References No definition available. + Details
Name: | ayi_DefinedBenefitPlanEstimatedNetPeriodicBenefitCostDecreasePer100BasisPointIncreaseInDiscountRateBenefitObligation
Namespace Prefix: | ayi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Defined Benefit Plan, Estimated Net Periodic Benefit Cost Increase, Per 100 Basis Point Decrease In Expected Return On Plan Assets + References No definition available. + Details
Name: | ayi_DefinedBenefitPlanEstimatedNetPeriodicBenefitCostIncreasePer100BasisPointDecreaseInExpectedReturnOnPlanAssets
Namespace Prefix: | ayi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Defined Contribution Plan, Common Stock Percentage of Total Fair Value of Plan Assets + References No definition available. + Details
Name: | ayi_DefinedContributionPlanCommonStockPercentageOfTotalFairValueOfPlanAssets
Namespace Prefix: | ayi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Defined Contribution Plan, Number Of Plans Terminated + References No definition available. + Details
Name: | ayi_DefinedContributionPlanNumberOfPlansTerminated
Namespace Prefix: | ayi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Multiemployer Plans + References No definition available. + Details
Name: | ayi_NumberOfMultiemployerPlans
Namespace Prefix: | ayi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Value of common shares held by shareholders. Excludes common shares repurchased and held as treasury shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(16)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 + Details
Name: | us-gaap_CommonStockValueOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-18 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480794/715-70-50-1 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cost for employer contribution to multiemployer plan. Multiemployer plan includes, but is not limited to, pension plan determined to be individually significant and insignificant and other postretirement benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 80 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480547/715-80-55-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 80 -Name Accounting Standards Codification -Section 35 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480606/715-80-35-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 80 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480576/715-80-50-11 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 80 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480576/715-80-50-9 + Details
Name: | us-gaap_MultiemployerPlanEmployerContributionCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_FixedIncomeSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=us-gaap_ForeignPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_HedgeFundsMultistrategyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |