Leases (Assets and Liabilities) (Details) $ in Millions	May 31, 2020 USD ($)
Leases [Abstract]
Operating lease right-of-use assets, net	$ 95.3
Finance leases	10.9
Total lease assets	106.2
Operating lease liabilities	22.8
Operating lease liabilities	75.7
Total operating lease liabilities	98.5
Finance Lease, Liability, Current	2.1
Finance Lease, Liability, Noncurrent	9.5
Total finance lease liabilities	11.6
Total lease liabilities	$ 110.1