Annual report pursuant to Section 13 and 15(d)

Leases (Narrative) (Details)

v3.21.2
Leases (Narrative) (Details)
$ in Millions
3 Months Ended 12 Months Ended
Aug. 31, 2020
USD ($)
May 31, 2021
USD ($)
agreement
May 31, 2020
USD ($)
May 31, 2019
USD ($)
Lessee, Lease, Description [Line Items]        
Fixed payment operating lease expense   $ 34.6 $ 38.2 $ 42.9
Amortization of operating lease right-of-use assets $ 24.4      
Lease incentives received in the form of tenant allowances and free rent   $ 0.8 $ 6.1 $ 3.5
Number of lease agreements, not yet commenced | agreement   4    
Lease not yet commenced, term of contract   10 years    
Lease payments, not yet commenced   $ 13.9    
Minimum [Member]        
Lessee, Lease, Description [Line Items]        
Operating leases, term of contract   1 year    
Operating leases, contractual term   2021    
Operating leases, renewal term   1 year    
Maximum [Member]        
Lessee, Lease, Description [Line Items]        
Operating leases, term of contract   10 years    
Operating leases, contractual term   2031    
Operating leases, renewal term   5 years