Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Jul. 31, 2020	Nov. 01, 2019
Lease assets
Operating lease, right-of-use asset	$ 156.6	$ 167.5
Finance lease, right-of-use asset	6.8
Total lease assets	163.4
Current liabilities
Operating leases	37.2	36.3
Finance leases	4.1
Noncurrent liabilities
Operating leases	141.1	$ 154.2
Finance leases	1.8
Total lease liabilities	184.2
Finance leases, accumulated depreciation	$ 13.9