Fair Value of Financial Instruments (Detail) - USD ($) $ in Millions		Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Financial Instruments [Line Items]
Other Select Financial Assets Fair Value Disclosure		$ 66.9	$ 48.2
Total Financial Assets		85.2	66.6
Contingent consideration liability				$ 1.6
Total Fair Value of Financial Liabilities		163.3	321.4
Fair Value, Inputs, Level 1
Financial Instruments [Line Items]
Cash and cash equivalents	[1]	55.5	36.7
Insurance deposits	[2]	11.4	11.5
Fair Value, Inputs, Level 2
Financial Instruments [Line Items]
Line of credit	[3]	158.0	319.8
Fair Value Measurements, Recurring Basis
Financial Instruments [Line Items]
Fair value of recurring assets		18.3	18.4
Fair value of recurring liabilities		5.3	1.6
Fair Value Measurements, Recurring Basis | Fair Value, Inputs, Level 1
Financial Instruments [Line Items]
Assets held in funded deferred compensation plan	[4]	5.3	5.4
Fair Value Measurements, Recurring Basis | Fair Value, Inputs, Level 2
Financial Instruments [Line Items]
Interest rate swaps	[5]	0.1	0.2
Fair Value Measurements, Recurring Basis | Fair Value, Inputs, Level 3
Financial Instruments [Line Items]
Investments in auction rate securities	[6]	13.0	13.0
Contingent consideration liability	[7]	$ 5.2	$ 1.4

[1] Cash and cash equivalents are stated at nominal value, which equals fair value.

[2] Represents restricted insurance deposits that are used to collateralize our insurance obligations and are stated at nominal value, which equals fair value. These insurance deposits are included in “Other noncurrent assets” on the accompanying consolidated balance sheets. See Note 12, “Insurance,” for further information.

[3] Represents outstanding borrowings under our syndicated line of credit. Due to variable interest rates, the carrying value of outstanding borrowings under our line of credit approximates the fair value. See Note 13, “Line of Credit,” for further information.

[4] Represents investments held in a Rabbi trust associated with one of our deferred compensation plans, which we include in “Other noncurrent assets” on the accompanying consolidated balance sheets. The fair value of the assets held in the funded deferred compensation plan is based on quoted market prices. See Note 14, “Employee Benefit Plans,” for further information.

[5] Represents interest rate swap derivatives designated as cash flow hedges. The fair values of the interest rate swaps are estimated based on the present value of the difference between expected cash flows calculated at the contracted interest rates and the expected cash flows at current market interest rates using observable benchmarks for LIBOR forward rates at the end of the period. The fair values of the interest rate swap liabilities are included in “Other accrued liabilities” for 2015 and “Other noncurrent liabilities” for 2014, on the accompanying consolidated balance sheets. See Note 13, “Line of Credit,” for more information.

[6] For investments in auction rate securities, the fair values are based on discounted cash flow valuation models, primarily utilizing unobservable inputs, which we include in “Other investments” on the accompanying consolidated balance sheets. See Note 9, “Auction Rate Securities,” for further information.

[7] Certain of our acquisitions involve the payment of contingent consideration. Depending on the structure of the contingent consideration arrangement, the fair value of the liability is based on either (i) the expected achievement of certain pre-established revenue goals or (ii) pre-defined forecasted adjusted income from operations using a probability weighted income approach. Our contingent consideration liabilities are included in “Other accrued liabilities” and “Other noncurrent liabilities” on the accompanying consolidated balance sheets.