Commitments and Contingencies - Future Minimum Lease Commitments (Details) $ in Millions	Oct. 31, 2016 USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
October 31, 2017	$ 78.2	[1],[2]
October 31, 2018	53.5	[1],[2]
October 31, 2019	36.4	[1],[2]
October 31, 2020	25.2	[1],[2]
October 31, 2021	20.0	[1],[2]
Thereafter	76.5	[1],[2]
Total minimum lease commitments	289.8	[1],[2]
Capital Lease Commitments
October 31, 2017	0.2
October 31, 2018	0.1
October 31, 2019	0.1
October 31, 2020	0.1
October 31, 2021	0.2
Thereafter	0.0
Total minimum lease commitments	0.6
Parking
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Total minimum lease commitments	$ 140.5	[1],[2]

[1] Of the total future minimum commitments, $140.5 million relates to the leased location arrangements within the Parking segment.

[2] Sublease rental income is expected to be immaterial for all periods presented.