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Financial Instruments and Commodity Contracts - Additional Information (Detail)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended 1 Months Ended
Oct. 31, 2012
USD ($)
Oct. 31, 2011
USD ($)
Oct. 31, 2012
Foreign Currency Contracts
EUR (€)
Oct. 31, 2011
Foreign Currency Contracts
CAD
Oct. 31, 2011
Foreign Currency Contracts
EUR (€)
Oct. 31, 2012
Commodity Forward Contracts
Diesel Fuel Forward Contracts
USD ($)
Oct. 31, 2011
Commodity Forward Contracts
Diesel Fuel Forward Contracts
USD ($)
Oct. 31, 2012
Commodity Forward Contracts
Steel Forward Contracts
USD ($)
Oct. 31, 2011
Commodity Forward Contracts
Steel Forward Contracts
USD ($)
Oct. 31, 2011
Commodity Forward Contracts
Lead Forward Contracts
USD ($)
Oct. 31, 2011
Commodity Forward Contracts
Natural Rubber Forward Contracts
USD ($)
Oct. 31, 2012
Interest -Rate Contracts
USD ($)
Oct. 31, 2011
Interest -Rate Contracts
USD ($)
Oct. 31, 2009
Call Option
Convertible Subordinated Debt
Manufacturing Operations
USD ($)
Derivative [Line Items]                            
Payments for Derivative Instrument, Investing Activities                           $ 125
Derivative, Collateral, Obligation to Return Cash 1 0                        
Exposure to credit risk 0 4                        
Derivative, Notional Amount     € 25 6 € 54 $ 3 $ 19 $ 61 $ 41 $ 1 $ 14 $ 39 $ 50