v3.25.2
Segment Information - Narrative (Details)
$ in Millions
3 Months Ended 9 Months Ended
May 31, 2025
USD ($)
May 31, 2024
USD ($)
May 31, 2025
USD ($)
segment
May 31, 2024
USD ($)
Aug. 31, 2024
USD ($)
Segment Reporting Information [Line Items]          
Number of reportable segments | segment     2    
Special charges $ 29.7 $ 0.0 $ 29.7 $ 0.0  
Assets 4,646.3   4,646.3   $ 3,814.6
Acuity Brands Lighting          
Segment Reporting Information [Line Items]          
Special charges 29.7        
Operating Segments | Acuity Intelligent Spaces          
Segment Reporting Information [Line Items]          
Assets $ 194.3   $ 194.3   $ 67.6