XML 102 R77.htm IDEA: XBRL DOCUMENT v3.20.2

Subsequent Event (Details) - shares	2 Months Ended	12 Months Ended	30 Months Ended
	Oct. 22, 2020	Aug. 31, 2020	Aug. 31, 2020	Oct. 23, 2020	Mar. 31, 2018
March 2018 Repurchase Plan
Subsequent Event [Line Items]
Reacquired shares of outstanding common stock		700,000	2,100,000
Shares authorized for repurchase (shares)					6,000,000
Subsequent Event | March 2018 Repurchase Plan
Subsequent Event [Line Items]
Reacquired shares of outstanding common stock	1,700,000
Subsequent Event | October 2020 Repurchase Plan
Subsequent Event [Line Items]
Additional shares authorized for repurchase (shares)				3,800,000
Shares authorized for repurchase (shares)				6,000,000

X

- Definition

Stock Repurchase Program, Number of Additional Shares Authorized to be Repurchased

+ References

No definition available.

+ Details

Name:	ayi_StockRepurchaseProgramNumberofAdditionalSharesAuthorizedtobeRepurchased
Namespace Prefix:	ayi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

Name:	us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- 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

X

- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_TreasuryStockSharesAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ayi_RepurchasePlanTypeAndNameAxis=ayi_March2018RepurchasePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	ayi_RepurchasePlanTypeAndNameAxis=ayi_October2020RepurchasePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: