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Standby Letters of Credit, Surety Bonds and Restricted Insurance Deposits Outstanding to Collaterize Self-Insurance Obligations (Detail) (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2013
Oct. 31, 2012
Letters Of Credit [Line Items]    
Surety bonds $ 307,800  
Self Insurance Programs
   
Letters Of Credit [Line Items]    
Standby letters of credit 103,901 104,968
Surety bonds 39,344 34,933
Restricted insurance deposits 28,478 31,720
Total $ 171,723 $ 171,621