Financial Instruments, Fair Value and Risk Management - Schedule of Derivative Financial Instruments and Investments Classification on Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Jul. 31, 2016	Oct. 31, 2015
Derivatives, Fair Value [Line Items]
Available-for-sale securities	$ 1.5	$ 1.4
Held-for-trading securities	1.6	1.7
Total assets	3.1	3.1
Earnout liability		0.0
Total liabilities	40.1	7.6
Foreign exchange forward contracts
Derivatives, Fair Value [Line Items]
Foreign exchange forward contracts	1.4	7.6
Investments
Derivatives, Fair Value [Line Items]
Available-for-sale securities	1.5	1.4
Held-for-trading securities	1.6	1.7
Accounts payable and accrued liabilities \| Foreign exchange forward contracts
Derivatives, Fair Value [Line Items]
Foreign exchange forward contracts	1.4	7.0
Other long-term liabilities
Derivatives, Fair Value [Line Items]
Earnout liability	38.7	0.0
Other long-term liabilities \| Foreign exchange forward contracts
Derivatives, Fair Value [Line Items]
Foreign exchange forward contracts	$ 0.0	$ 0.6

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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-Publisher FASB
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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

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Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

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