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Financial Instruments (Details 3) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2016
Oct. 31, 2015
Investments, All Other Investments [Abstract]    
Period within which the funds held as collateral and posted as collateral are transferred from or to counterparties 2 days  
Collateralized arrangements in net liability position $ 9 $ 35
Derivatives, Fair Value    
Total derivatives, gross notional amount 35,300 29,463
Other Current Assets    
Derivatives, Fair Value    
Derivative asset, fair value 449 459
Long-Term Financing Receivables and Other Assets    
Derivatives, Fair Value    
Derivative asset, fair value 320 360
Other Accrued Liabilities    
Derivatives, Fair Value    
Derivative liability, fair value 168 85
Long-Term Other Liabilities    
Derivatives, Fair Value    
Derivative liability, fair value $ 60 107
Cash flow hedges    
Derivatives, Fair Value    
Maturity period of foreign currency cash flow hedges 12 months  
Cash flow hedges | Minimum    
Derivatives, Fair Value    
Duration of lease term for which lease-related forward contracts and intercompany lease loan forward contracts can be extended 2 years  
Cash flow hedges | Maximum    
Derivatives, Fair Value    
Duration of lease term for which lease-related forward contracts and intercompany lease loan forward contracts can be extended 5 years  
Derivatives designated as hedging instruments    
Derivatives, Fair Value    
Total derivatives, gross notional amount $ 18,646 20,053
Derivatives designated as hedging instruments | Other Current Assets    
Derivatives, Fair Value    
Derivative asset, fair value 349 410
Derivatives designated as hedging instruments | Long-Term Financing Receivables and Other Assets    
Derivatives, Fair Value    
Derivative asset, fair value 309 272
Derivatives designated as hedging instruments | Other Accrued Liabilities    
Derivatives, Fair Value    
Derivative liability, fair value 63 35
Derivatives designated as hedging instruments | Long-Term Other Liabilities    
Derivatives, Fair Value    
Derivative liability, fair value 49 67
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts    
Derivatives, Fair Value    
Total derivatives, gross notional amount 9,500 9,500
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts | Long-Term Financing Receivables and Other Assets    
Derivatives, Fair Value    
Derivative asset, fair value 109 0
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts | Long-Term Other Liabilities    
Derivatives, Fair Value    
Derivative liability, fair value 6 55
Derivatives designated as hedging instruments | Cash flow hedges | Foreign currency contracts    
Derivatives, Fair Value    
Total derivatives, gross notional amount 7,255 8,692
Derivatives designated as hedging instruments | Cash flow hedges | Foreign currency contracts | Other Current Assets    
Derivatives, Fair Value    
Derivative asset, fair value 296 296
Derivatives designated as hedging instruments | Cash flow hedges | Foreign currency contracts | Long-Term Financing Receivables and Other Assets    
Derivatives, Fair Value    
Derivative asset, fair value 172 206
Derivatives designated as hedging instruments | Cash flow hedges | Foreign currency contracts | Other Accrued Liabilities    
Derivatives, Fair Value    
Derivative liability, fair value 40 28
Derivatives designated as hedging instruments | Cash flow hedges | Foreign currency contracts | Long-Term Other Liabilities    
Derivatives, Fair Value    
Derivative liability, fair value 15 8
Derivatives designated as hedging instruments | Net investment hedges | Foreign currency contracts    
Derivatives, Fair Value    
Total derivatives, gross notional amount 1,891 1,861
Derivatives designated as hedging instruments | Net investment hedges | Foreign currency contracts | Other Current Assets    
Derivatives, Fair Value    
Derivative asset, fair value 53 114
Derivatives designated as hedging instruments | Net investment hedges | Foreign currency contracts | Long-Term Financing Receivables and Other Assets    
Derivatives, Fair Value    
Derivative asset, fair value 28 66
Derivatives designated as hedging instruments | Net investment hedges | Foreign currency contracts | Other Accrued Liabilities    
Derivatives, Fair Value    
Derivative liability, fair value 23 7
Derivatives designated as hedging instruments | Net investment hedges | Foreign currency contracts | Long-Term Other Liabilities    
Derivatives, Fair Value    
Derivative liability, fair value 28 4
Derivatives not designated as hedging instruments    
Derivatives, Fair Value    
Total derivatives, gross notional amount 16,654 9,410
Derivatives not designated as hedging instruments | Other Current Assets    
Derivatives, Fair Value    
Derivative asset, fair value 100 49
Derivatives not designated as hedging instruments | Long-Term Financing Receivables and Other Assets    
Derivatives, Fair Value    
Derivative asset, fair value 11 88
Derivatives not designated as hedging instruments | Other Accrued Liabilities    
Derivatives, Fair Value    
Derivative liability, fair value 105 50
Derivatives not designated as hedging instruments | Long-Term Other Liabilities    
Derivatives, Fair Value    
Derivative liability, fair value 11 40
Derivatives not designated as hedging instruments | Foreign currency contracts    
Derivatives, Fair Value    
Total derivatives, gross notional amount 16,496 9,283
Derivatives not designated as hedging instruments | Foreign currency contracts | Other Current Assets    
Derivatives, Fair Value    
Derivative asset, fair value 100 46
Derivatives not designated as hedging instruments | Foreign currency contracts | Long-Term Financing Receivables and Other Assets    
Derivatives, Fair Value    
Derivative asset, fair value 11 88
Derivatives not designated as hedging instruments | Foreign currency contracts | Other Accrued Liabilities    
Derivatives, Fair Value    
Derivative liability, fair value 103 50
Derivatives not designated as hedging instruments | Foreign currency contracts | Long-Term Other Liabilities    
Derivatives, Fair Value    
Derivative liability, fair value 11 40
Derivatives not designated as hedging instruments | Other derivatives    
Derivatives, Fair Value    
Total derivatives, gross notional amount 158 127
Derivatives not designated as hedging instruments | Other derivatives | Other Current Assets    
Derivatives, Fair Value    
Derivative asset, fair value 0 3
Derivatives not designated as hedging instruments | Other derivatives | Other Accrued Liabilities    
Derivatives, Fair Value    
Derivative liability, fair value 2 0
Derivatives not designated as hedging instruments | Other derivatives | Long-Term Other Liabilities    
Derivatives, Fair Value    
Derivative liability, fair value $ 0 $ 0