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Subsequent Event (Details) | Sep. 17, 2019 brand
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The Luminaires Group (TLG) | Subsequent Event |
Subsequent Event [Line Items] |
Number of niche lighting brands of acquired entity | 5

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- Definition Business Combination, Acquired Entity, Number of Lighting Brands + References No definition available. + Details
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Namespace Prefix: | ayi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_BusinessAcquisitionAxis=ayi_TheLuminairesGroupTLGMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |