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Acquisitions and Divestitures - Acquisitions (Detail) $ in Millions | 9 Months Ended |
--- | --- | ---
Jul. 31, 2015 USD ($) Acquisition | Jul. 31, 2014 USD ($) Acquisition | Oct. 31, 2014 USD ($)
Business Acquisition [Line Items] |  |  |
Number of acquisitions | Acquisition | 0 | 2 |
Purchase Price, net of Cash | $ 1.5 | $ 53.5 |
Goodwill | $ 810.3 |  | $ 880.2
Total 2014 Acquisitions [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Number of acquisitions | Acquisition | 2 |  |
Purchase Price, net of Cash | $ 53.5 |  |
Tangible Assets, net | 2.1 |  |
Intangible Assets | 14.0 |  |
Goodwill | $ 34.4 |  |

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