v3.26.1
Leases - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
May 31, 2026
May 31, 2025
May 31, 2026
May 31, 2025
Aug. 31, 2025
Lessor and Lessee, Lease, Description [Line Items]          
Operating lease option to extend     options to extend up to 9 years    
Leasing & Management Services          
Lessor and Lessee, Lease, Description [Line Items]          
Operating lease rental revenues $ 34.3 $ 35.5 $ 106.0 $ 103.1  
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Revenue from Contract with Customer, Excluding Assessed Tax Revenue from Contract with Customer, Excluding Assessed Tax Revenue from Contract with Customer, Excluding Assessed Tax Revenue from Contract with Customer, Excluding Assessed Tax  
Car Hire Utilization Arrangements          
Lessor and Lessee, Lease, Description [Line Items]          
Operating lease rental revenues $ 4.0 $ 6.1 $ 14.1 $ 16.6  
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Revenue from Contract with Customer, Excluding Assessed Tax Revenue from Contract with Customer, Excluding Assessed Tax Revenue from Contract with Customer, Excluding Assessed Tax Revenue from Contract with Customer, Excluding Assessed Tax  
Minimum          
Lessor and Lessee, Lease, Description [Line Items]          
Sublease period     1 year    
Opreating lease remaining lease term     1 year    
Maximum          
Lessor and Lessee, Lease, Description [Line Items]          
Sublease period     10 years    
Opreating lease remaining lease term     72 years    
Equipment on Operating Lease          
Lessor and Lessee, Lease, Description [Line Items]          
Accumulated depreciation $ 133.2   $ 133.2   $ 123.0
Depreciation expense $ 9.6 $ 8.9 $ 28.4 $ 27.0