Insurance - Standby Letters of Credit, Surety Bonds and Restricted Insurance Deposits Outstanding to Collateralize Self-Insurance Obligations (Detail) (USD $) In Millions, unless otherwise specified	Jul. 31, 2014		Oct. 31, 2013
Letters Of Credit
Surety bonds	$ 332.1
Restricted insurance deposits	(16.0)	[1]	(28.5)	[1]
Self Insurance Programs
Letters Of Credit
Standby letters of credit	111.2		97.7
Surety bonds	46.5		40.5
Restricted insurance deposits	16.0		28.5
Total	$ 173.7		$ 166.7

[1] Represents restricted insurance deposits that are used to collateralize our insurance obligations and are stated at nominal value, which equals fair value. These insurance deposits relate primarily to the OneSource Services Inc. acquisition. See Note 7, “Insurance,” for further information.