Insurance - Standby Letters of Credit, Surety Bonds and Restricted Insurance Deposits Outstanding to Collateralize Self-Insurance Obligations (Detail) - USD ($) $ in Millions	Jul. 31, 2015	Oct. 31, 2014
Letters Of Credit
Total Instruments Used To Collateralize Insurance Obligations	$ 172.9	$ 175.1
Standby Letters of Credit
Letters Of Credit
Instruments Used To Collateralize Insurance Obligations	108.6	111.1
Surety Bond
Letters Of Credit
Instruments Used To Collateralize Insurance Obligations	52.9	52.5
Rejected insurance deposits
Letters Of Credit
Instruments Used To Collateralize Insurance Obligations	$ 11.4	$ 11.5