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DERIVATIVE INSTRUMENTS - Fair Value (Details) - USD ($)
$ in Millions
Jul. 31, 2016
Oct. 31, 2015
Jul. 31, 2015
Fair Value of Derivative Instruments      
Total derivative assets $ 559 $ 428 $ 425
Total derivative liabilities 95 78 109
Other Assets      
Fair Value of Derivative Instruments      
Total derivative assets 559 428 425
Accounts Payable and Accrued Expenses      
Fair Value of Derivative Instruments      
Total derivative liabilities 95 78 109
Designated as Hedging Instruments | Other Assets      
Fair Value of Derivative Instruments      
Total derivative assets 455 313 298
Designated as Hedging Instruments | Accounts Payable and Accrued Expenses      
Fair Value of Derivative Instruments      
Total derivative liabilities 4 8 20
Designated as Hedging Instruments | Interest Rate Contracts | Other Assets      
Fair Value of Derivative Instruments      
Total derivative assets 443 299 284
Designated as Hedging Instruments | Interest Rate Contracts | Accounts Payable and Accrued Expenses      
Fair Value of Derivative Instruments      
Total derivative liabilities 4 8 20
Designated as Hedging Instruments | Cross-Currency Interest Rate Contracts | Other Assets      
Fair Value of Derivative Instruments      
Total derivative assets 12 14 14
Not Designated as Hedging Instruments | Other Assets      
Fair Value of Derivative Instruments      
Total derivative assets 104 115 127
Not Designated as Hedging Instruments | Accounts Payable and Accrued Expenses      
Fair Value of Derivative Instruments      
Total derivative liabilities 91 70 89
Not Designated as Hedging Instruments | Interest Rate Contracts | Other Assets      
Fair Value of Derivative Instruments      
Total derivative assets 45 54 57
Not Designated as Hedging Instruments | Interest Rate Contracts | Accounts Payable and Accrued Expenses      
Fair Value of Derivative Instruments      
Total derivative liabilities 43 52 63
Not Designated as Hedging Instruments | Foreign Exchange Contracts | Other Assets      
Fair Value of Derivative Instruments      
Total derivative assets 47 50 57
Not Designated as Hedging Instruments | Foreign Exchange Contracts | Accounts Payable and Accrued Expenses      
Fair Value of Derivative Instruments      
Total derivative liabilities 48 18 26
Not Designated as Hedging Instruments | Cross-Currency Interest Rate Contracts | Other Assets      
Fair Value of Derivative Instruments      
Total derivative assets $ 12 $ 11 $ 13