Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Amortization Expense on Other Intangible Assets (Detail)	12 Months Ended
	Oct. 31, 2016
Minimum | Trade names
Finite-Lived Intangible Assets [Line Items]
Useful life	10 years
Minimum | Non-competes
Finite-Lived Intangible Assets [Line Items]
Useful life	1 year
Minimum | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Useful life	5 years
Minimum | Other intangibles
Finite-Lived Intangible Assets [Line Items]
Useful life	3 years
Maximum | Trade names
Finite-Lived Intangible Assets [Line Items]
Useful life	15 years
Maximum | Non-competes
Finite-Lived Intangible Assets [Line Items]
Useful life	10 years
Maximum | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Useful life	15 years
Maximum | Other intangibles
Finite-Lived Intangible Assets [Line Items]
Useful life	15 years