Insurance - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jan. 31, 2013	Oct. 31, 2012
Schedule of Other Liabilities [Line Items]
Self insurance retention amount per-claim	$ 1.0
Commercial insurance policies coverage	200.0
Insurance claim reserves	353.5	343.8
Insurance recoverables	64.5	64.5
Minimum
Schedule of Other Liabilities [Line Items]
Insurance deductibles per occurrence	1.0
Maximum
Schedule of Other Liabilities [Line Items]
Insurance deductibles per occurrence	5.0
Medical and Dental Self Insurance Program
Schedule of Other Liabilities [Line Items]
Insurance claim reserves	7.1	13.0
Medical and Dental Self Insurance Program | Maximum
Schedule of Other Liabilities [Line Items]
Self insurance retention amount per-claim	0.4
OneSource Services Inc
Schedule of Other Liabilities [Line Items]
Commercial insurance policies coverage	$ 75.0