Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Oct. 31, 2012 Location	Oct. 31, 2011	Oct. 31, 2010
Income Taxes [Line Items]
Unrecognized tax benefits, related to re-measurement	$ 6,900,000	$ 4,700,000
Additional employment based tax credits	1,900,000
Discrete tax costs		1,900,000
Other, net	242,000	(796,000)	143,000
Decrease in valuation allowance for a goodwill adjustment		300,000
Unrecognized tax benefits	88,448,000	95,956,000	101,681,000
Unrecognized tax benefits, accrued interest	1,100,000
Number of states in which entity operates	50
Maximum decrease in unrecognized tax benefits that is reasonably possible	500,000
Domestic Country
Income Taxes [Line Items]
Income tax returns open for examination	October 31, 2006 through October 31, 2012
Domestic Country | OneSource Services Inc
Income Taxes [Line Items]
Income tax returns open for examination	March 31, 2000 through November 14, 2007
Domestic Country | Linc
Income Taxes [Line Items]
Income tax returns open for examination	December 31, 2009 through December 31, 2010
Internal Revenue Service (IRS)
Income Taxes [Line Items]
Other, net	(300,000)
Income tax returns open for examination	2006-2008
State and Local Jurisdiction
Income Taxes [Line Items]
Other, net	$ 500,000
Income tax returns open for examination	2008-2012