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Significant Accounting Policies - Accounts Receivable (Details) $ in Millions	Sep. 01, 2019 USD ($)
Accounting Policies [Abstract]
Total reserve balance	$ 23.4

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- Definition

Accounts Receivable, Sales Returns, Reserve for Sales Returns

+ References

No definition available.

+ Details

Name:	ayi_AccountsReceivableSalesReturnsReserveforSalesReturns
Namespace Prefix:	ayi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_AccountingPoliciesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration