Insurance - Standby Letters of Credit, Surety Bonds and Restricted Insurance Deposits Outstanding to Collateralize Self-Insurance Obligations (Detail) - USD ($) $ in Millions	Jul. 31, 2016	Oct. 31, 2015
Letters Of Credit
Total Instruments Used To Collateralize Insurance Obligations	$ 188.5	$ 172.7
Standby Letters of Credit
Letters Of Credit
Instruments Used To Collateralize Insurance Obligations	120.1	105.4
Surety Bond
Letters Of Credit
Instruments Used To Collateralize Insurance Obligations	57.2	55.9
Rejected insurance deposits
Letters Of Credit
Instruments Used To Collateralize Insurance Obligations	$ 11.2	$ 11.4