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Commitments and Contingencies (Details) $ in Millions | 8 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2015 complaint | Oct. 31, 2016 USD ($) | Oct. 31, 2015 USD ($) | Oct. 31, 2014 USD ($)
Commitments and Contingencies Disclosure [Abstract] |  |  |  |
Rent expense |  | $ 29.9 | $ 27.5 | $ 25.6
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] |  |  |  |
2016 |  | 27.4 |  |
2017 |  | 23.7 |  |
2018 |  | 21.5 |  |
2019 |  | 19.2 |  |
2020 |  | 16.4 |  |
2022 and thereafter |  | 124.8 |  |
Total |  | 233.0 |  |
Payments for Legal Settlements |  | $ 17.0 |  |
Loss Contingency, New Claims Filed, Number | complaint | 50 |  |  |

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