Line Of Credit Facility - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jan. 31, 2012
Line of Credit Facility [Line Items]
Description of covenants under the Facility	(1) a fixed charge coverage ratio; (2) a leverage ratio; and (3) a combined net worth test.
Line of credit, amount outstanding	$ 293.0
Line of credit, borrowing capacity currently available	260.3
Forward starting swaps
Line of Credit Facility [Line Items]
Derivative agreement date	Oct. 19, 2010
Description of derivative agreement	The Company entered into a three-year forward starting interest rate swap agreement with an underlying notional amount of $25.0 million, pursuant to which the Company receives variable interest payments based on LIBOR and pays fixed interest at a rate of 0.89%. The effective date of this hedge was February 24, 2011. This swap is intended to hedge the interest risk associated with the Company's forecasted floating-rate, LIBOR-based debt.
Interest rate swap agreement period	3 years
Notional amount of derivatives	25.0
Derivative, fixed interest rate	0.89%
Derivative, effective date	Feb. 24, 2011
Interest Rate Swap
Line of Credit Facility [Line Items]
Fair value of interest rate swaps	(0.3)
Effective portion of cash flow hedges included in accumulated other comprehensive loss, before tax	(0.3)
Effective portion of cash flow hedges included in accumulated other comprehensive loss, net of tax	(0.2)
Five Year Syndicated Credit Facility
Line of Credit Facility [Line Items]
Syndicated line of credit, maximum capacity	650.0
Syndicated line of credit facility, expiration date	2016-09-08
Syndicated line of credit, optional maximum capacity at any time prior to the expiration (subject to receipt of commitments for the increased amount from existing and new lenders)	$ 850.0