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Leases - Maturities (Details) - USD ($)
$ in Millions
May 31, 2020
Jun. 01, 2019
Future minimum payments under operating leases    
2021 $ 16.5  
2022 14.5  
2023 12.7  
2024 10.7  
2025 8.3  
Thereafter 36.5  
Total undiscounted payments 99.2  
Less: Imputed interest (14.6)  
Present value of minimum lease payments $ 84.6  
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Accrued Liabilities, Current  
Operating lease liabilities - non-current $ 70.9 $ 77.7