Annual report pursuant to Section 13 and 15(d)

Leases - Additional Information (Details)

v3.19.3
Leases - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Aug. 31, 2019
Aug. 31, 2018
Aug. 31, 2017
Leases Disclosure [Line Items]      
Due in 2020 $ 15.8    
Due in 2021 12.3    
Due in 2022 10.1    
Due in 2023 6.9    
Due in 2024 5.2    
Due thereafter 21.6    
Operating lease, rental expense $ 26.5 $ 24.3 $ 27.6
Minimum      
Leases Disclosure [Line Items]      
Lease agreements period 1 year    
Maximum      
Leases Disclosure [Line Items]      
Lease agreements period 20 years