Insurance - Standby Letters of Credit, Surety Bonds and Restricted Insurance Deposits Outstanding to Collateralize Self-Insurance Obligations (Detail) - USD ($) $ in Millions	Oct. 31, 2015	Oct. 31, 2014
Letters Of Credit [Line Items]
Total Instruments Used To Collateralize Insurance Obligations	$ 172.7	$ 175.1
Standby letters of credit
Letters Of Credit [Line Items]
Instruments Used To Collateralize Insurance Obligations	105.4	111.1
Surety bonds
Letters Of Credit [Line Items]
Instruments Used To Collateralize Insurance Obligations	55.9	52.5
Restricted insurance deposits
Letters Of Credit [Line Items]
Instruments Used To Collateralize Insurance Obligations	$ 11.4	$ 11.5