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Fair Value Measurements - Financial Instruments Measured on Recurring Basis (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 3 Months Ended 12 Months Ended
Oct. 31, 2013
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 1
Oct. 31, 2012
Fair Value, Measurements, Recurring [Member]
Level 1
Oct. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 2
Oct. 31, 2012
Fair Value, Measurements, Recurring [Member]
Level 2
Oct. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 3
Oct. 31, 2012
Fair Value, Measurements, Recurring [Member]
Level 3
Oct. 31, 2013
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
Oct. 31, 2012
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
Oct. 31, 2013
US Treasury Bill Securities [Member]
Fair Value, Measurements, Recurring [Member]
Level 1
Oct. 31, 2012
US Treasury Bill Securities [Member]
Fair Value, Measurements, Recurring [Member]
Level 1
Oct. 31, 2013
US Treasury Bill Securities [Member]
Fair Value, Measurements, Recurring [Member]
Level 2
Oct. 31, 2012
US Treasury Bill Securities [Member]
Fair Value, Measurements, Recurring [Member]
Level 2
Oct. 31, 2013
US Treasury Bill Securities [Member]
Fair Value, Measurements, Recurring [Member]
Level 3
Oct. 31, 2012
US Treasury Bill Securities [Member]
Fair Value, Measurements, Recurring [Member]
Level 3
Oct. 31, 2013
US Treasury Bill Securities [Member]
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
Oct. 31, 2012
US Treasury Bill Securities [Member]
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
Oct. 31, 2013
Other Investment Companies [Member]
Fair Value, Measurements, Recurring [Member]
Level 1
Oct. 31, 2012
Other Investment Companies [Member]
Fair Value, Measurements, Recurring [Member]
Level 1
Oct. 31, 2013
Other Investment Companies [Member]
Fair Value, Measurements, Recurring [Member]
Level 2
Oct. 31, 2012
Other Investment Companies [Member]
Fair Value, Measurements, Recurring [Member]
Level 2
Oct. 31, 2013
Other Investment Companies [Member]
Fair Value, Measurements, Recurring [Member]
Level 3
Oct. 31, 2012
Other Investment Companies [Member]
Fair Value, Measurements, Recurring [Member]
Level 3
Oct. 31, 2013
Other Investment Companies [Member]
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
Oct. 31, 2012
Other Investment Companies [Member]
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
Oct. 31, 2013
Foreign Exchange Contract [Member]
Fair Value, Measurements, Recurring [Member]
Level 1
Oct. 31, 2012
Foreign Exchange Contract [Member]
Fair Value, Measurements, Recurring [Member]
Level 1
Oct. 31, 2013
Foreign Exchange Contract [Member]
Fair Value, Measurements, Recurring [Member]
Level 2
Oct. 31, 2012
Foreign Exchange Contract [Member]
Fair Value, Measurements, Recurring [Member]
Level 2
Oct. 31, 2013
Foreign Exchange Contract [Member]
Fair Value, Measurements, Recurring [Member]
Level 3
Oct. 31, 2012
Foreign Exchange Contract [Member]
Fair Value, Measurements, Recurring [Member]
Level 3
Oct. 31, 2013
Foreign Exchange Contract [Member]
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
Oct. 31, 2012
Foreign Exchange Contract [Member]
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
Oct. 31, 2013
Interest Rate Cap [Member]
Fair Value, Measurements, Recurring [Member]
Level 1
Oct. 31, 2012
Interest Rate Cap [Member]
Fair Value, Measurements, Recurring [Member]
Level 1
Oct. 31, 2013
Interest Rate Cap [Member]
Fair Value, Measurements, Recurring [Member]
Level 2
Oct. 31, 2012
Interest Rate Cap [Member]
Fair Value, Measurements, Recurring [Member]
Level 2
Oct. 31, 2013
Interest Rate Cap [Member]
Fair Value, Measurements, Recurring [Member]
Level 3
Oct. 31, 2012
Interest Rate Cap [Member]
Fair Value, Measurements, Recurring [Member]
Level 3
Oct. 31, 2013
Interest Rate Cap [Member]
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
Oct. 31, 2012
Interest Rate Cap [Member]
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
Oct. 31, 2013
Commodity Contract [Member]
Fair Value, Measurements, Recurring [Member]
Level 1
Oct. 31, 2012
Commodity Contract [Member]
Fair Value, Measurements, Recurring [Member]
Level 1
Oct. 31, 2013
Commodity Contract [Member]
Fair Value, Measurements, Recurring [Member]
Level 2
Oct. 31, 2012
Commodity Contract [Member]
Fair Value, Measurements, Recurring [Member]
Level 2
Oct. 31, 2013
Commodity Contract [Member]
Fair Value, Measurements, Recurring [Member]
Level 3
Oct. 31, 2012
Commodity Contract [Member]
Fair Value, Measurements, Recurring [Member]
Level 3
Oct. 31, 2013
Commodity Contract [Member]
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
Oct. 31, 2012
Commodity Contract [Member]
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
Oct. 31, 2013
Estimate of Fair Value, Fair Value Disclosure [Member]
Oct. 31, 2013
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Oct. 31, 2012
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Oct. 31, 2013
NA Truck [Member]
Apr. 30, 2013
NA Truck [Member]
Oct. 31, 2013
NA Truck [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                                                                                                                  
Impairments $ 81 $ 0 $ 0                                                                                                       $ (77) $ (4) $ 81
Property, Plant, and Equipment and Intangible Assets, Fair Value Disclosure                                                                                                         25        
Property, Plant, and Equipment, Fair Value Disclosure                                                                                                       5   0      
Available-for-sale Securities, Fair Value Disclosure                       396 420 0 0 0 0 396 420 434 46 0 0 0 0 434 46                                                            
Foreign currency contracts                                                       0 0 4 0 0 0 4 0 0 0 1 0 0 0 1 0                            
Assets, Fair Value Disclosure       830 466 5 0 0 0 835 466                                                                                            
Derivative Liability, Fair Value, Gross Liability                                                                                       0 0 0 4 0 0 0 4            
Guarantees, Fair Value Disclosure       0 0 0 0 6 7 6 7                                                                                            
Liabilities, Fair Value Disclosure       0 0 0 4 6 7 6 11                                                                                            
Impairment of Long-Lived Assets Held-for-use $ 20