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Cover Page
Oct. 02, 2019
Cover page.  
Document Type 8-K
Document Period End Date Oct. 02, 2019
Entity Registrant Name ACUITY BRANDS, INC
Entity Incorporation, State or Country Code DE
Entity File Number 001-16583
Entity Tax Identification Number 58-2632672
Entity Address, Address Line One 1170 Peachtree Street, N.E
Entity Address, Address Line Two Suite 2300
Entity Address, City or Town Atlanta
Entity Address, State or Province GA
Entity Address, Postal Zip Code 30309-7676
City Area Code 404
Local Phone Number 853-1400
Title of 12(b) Security Common stock, $0.01 par value per share
Trading Symbol AYI
Security Exchange Name NYSE
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity Central Index Key 0001144215
Amendment Flag false