Commitments and Contingencies - Lease and Other Similar Commitments (Details) $ in Millions	Oct. 31, 2019 USD ($)
Capital
October 31, 2020	$ 3.1
October 31, 2021	2.5
October 31, 2022	1.3
October 31, 2023	0.6
October 31, 2024	0.0
Thereafter	0.0
Total minimum lease commitments	7.5
Operating and Other
October 31, 2020	42.8
October 31, 2021	35.5
October 31, 2022	30.3
October 31, 2023	25.6
October 31, 2024	20.5
Thereafter	51.8
Total minimum lease commitments	206.5
Estimated future sublease rental income	15.8
Service Concession Arrangements
October 31, 2020	20.8
October 31, 2021	16.0
October 31, 2022	15.4
October 31, 2023	15.4
October 31, 2024	15.4
Thereafter	21.9
Total minimum lease commitments	$ 105.0