Quarterly report [Sections 13 or 15(d)]

Supplemental Information (Narrative) (Details)

v3.25.1
Supplemental Information (Narrative) (Details) - USD ($)
$ in Millions
2 Months Ended 3 Months Ended 9 Months Ended
Feb. 28, 2025
Feb. 28, 2025
Feb. 29, 2024
Feb. 28, 2025
Feb. 29, 2024
Jan. 31, 2025
Jan. 07, 2025
May 31, 2024
Depreciation expense   $ 30.3 $ 32.3 $ 86.8 $ 94.7      
Amortization expense   12.8 12.5 37.0 36.2      
Impairment loss relates to goodwill or intangible assets       0.0 0.0      
Revolving Credit Facility [Member]                
Unused amount available $ 2,000.0 $ 2,000.0   $ 2,000.0        
Weighted-average interest rate 4.11% 4.11%   4.11%       6.14%
Standby Letters of Credit [Member]                
Maximum borrowing capacity $ 168.7 $ 168.7   $ 168.7       $ 168.5
Amounts outstanding 0.0 0.0 $ 0.0 $ 0.0 $ 0.0     $ 0.0
Standby Letters of Credit [Member] | Minimum [Member]                
Expiration date of credit facility       Mar. 03, 2025        
Standby Letters of Credit [Member] | Maximum [Member]                
Expiration date of credit facility       Feb. 28, 2026        
JP Morgan Chase Bank, N.A. [Member] | Interest Rate Swaption [Member]                
Aggregate notional amount           $ 3,000.0    
Swaption contract assets, premium paid           $ 19.2    
JP Morgan Chase Bank, N.A. [Member] | Bridge Loan Facility [Member]                
Maximum borrowing capacity 0.0 $ 0.0   $ 0.0     $ 3,500.0  
Debt financing fees, including structuring and commitment fees $ 11.4