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Basis of Presentation and Significant Accounting Policies - Management Reimbursement Revenue (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2019 | Jul. 31, 2018 | Jul. 31, 2019 | Jul. 31, 2018
Segment Reporting Information [Line Items] |  |  |  |
Parking facility management fee revenue | $ 1,647.9 | $ 1,624.3 | $ 4,850.6 | $ 4,793.5
Management Reimbursement Revenue |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Parking facility management fee revenue | 95.3 | 93.5 | 283.2 | 282.9
Management Reimbursement Revenue | Business & Industry |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Parking facility management fee revenue | 70.9 | 69.7 | 211.2 | 206.1
Management Reimbursement Revenue | Aviation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Parking facility management fee revenue | $ 24.4 | $ 23.8 | $ 72.0 | $ 76.9

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