Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Apr. 30, 2020	Nov. 01, 2019
Lease assets
Operating lease, right-of-use asset	$ 158.8	$ 167.5
Finance lease, right-of-use asset	7.9
Total lease assets	166.7
Current liabilities
Operating leases	36.0	36.3
Finance leases	4.5
Noncurrent liabilities
Operating leases	144.8	$ 154.2
Finance leases	1.3
Total lease liabilities	186.6
Finance leases, accumulated depreciation	$ 12.2