Leases - Supplemental Information - (Details) $ in Millions	Feb. 29, 2020 USD ($)
Leases [Abstract]
Operating lease ROU assets	$ 128.5
Finance lease ROU assets	127.5
Total leased assets	256.0
Current operating lease liabilities	34.2
Current finance lease liabilities	7.2
Noncurrent operating lease liabilities	97.8
Noncurrent finance lease liabilities	130.7
Total lease liabilities	$ 269.9
Operating leases, weighted-average remaining lease term (years)	5 years 9 months 18 days
Operating leases, weighted-average discount rate (percent)	2.20%
Finance leases, weighted-average remaining lease term (years)	14 years 8 months 12 days
Finance leases, weighted-average discount rate (percent)	3.30%