v3.26.1
Intangibles and Other Assets, Net - Identifiable Intangibles and Other Assets, Net (Detail) - USD ($)
$ in Millions
May 31, 2026
Aug. 31, 2025
Intangibles and Other Assets by Major Class [Line Items]    
Finite-Lived Intangible Assets, Net, Total $ 24.1 $ 24.9
Intangible assets not subject to amortization 2.3 2.3
Prepaid and other assets 46.8 44.3
Operating lease ROU assets $ 73.6 $ 84.2
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Total Intangibles and other assets, net Total Intangibles and other assets, net
Nonqualified savings plan investments $ 68.7 $ 59.4
Debt issuance costs, net 6.5 7.2
Deferred tax assets 42.7 41.9
Total Intangibles and other assets, net 264.7 264.2
Customer Relationships    
Intangibles and Other Assets by Major Class [Line Items]    
Finite lived intangible assets gross 87.5 87.5
Accumulated amortization (76.9) (74.8)
Other Intangible Assets    
Intangibles and Other Assets by Major Class [Line Items]    
Finite lived intangible assets gross 46.0 42.3
Accumulated amortization $ (32.5) $ (30.1)