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Financial Instruments (Detail 3) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2015
Oct. 31, 2014
Oct. 31, 2013
Financial Instruments      
Period within which the funds held as collateral and posted as collateral are transferred from or to counterparties 2 days    
Derivative, Collateral, Obligation to Return Cash $ 640 $ 452  
Financial Collateral 19 29  
Derivatives, Fair Value      
Total derivatives, gross notional amount 52,624 54,693  
Derivative asset, fair value 1,077 980  
Derivative liability, fair value 496 405  
Collateralized arrangements in net liability position 173 38  
Other Comprehensive Income (Loss), Net of Tax (421) (2,103) $ 1,781
Other Current Assets      
Derivatives, Fair Value      
Derivative Asset, Fair Value Gross Asset 669 674  
Long-term Financing Receivables and Other Assets      
Derivatives, Fair Value      
Derivative Asset, Fair Value Gross Asset 408 306  
Other Accrued Liabilities      
Derivatives, Fair Value      
Derivative Liability, Fair Value Gross Liability 287 223  
Long-Term Other Liabilities      
Derivatives, Fair Value      
Derivative Liability, Fair Value Gross Liability $ 209 182  
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 $ 34,086 32,948  
Derivatives designated as hedging instruments | Other Current Assets      
Derivatives, Fair Value      
Derivative Asset, Fair Value Gross Asset 582 586  
Derivatives designated as hedging instruments | Long-term Financing Receivables and Other Assets      
Derivatives, Fair Value      
Derivative Asset, Fair Value Gross Asset 319 273  
Derivatives designated as hedging instruments | Other Accrued Liabilities      
Derivatives, Fair Value      
Derivative Liability, Fair Value Gross Liability 200 141  
Derivatives designated as hedging instruments | Long-Term Other Liabilities      
Derivatives, Fair Value      
Derivative Liability, Fair Value Gross Liability 146 157  
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts      
Derivatives, Fair Value      
Total derivatives, gross notional amount 12,675 10,800  
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts | Other Current Assets      
Derivatives, Fair Value      
Derivative Asset, Fair Value Gross Asset 1 3  
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 Gross Asset 37 102  
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts | Long-Term Other Liabilities      
Derivatives, Fair Value      
Derivative Liability, Fair Value Gross Liability 55 55  
Derivatives designated as hedging instruments | Cash flow hedges | Foreign exchange contracts      
Derivatives, Fair Value      
Total derivatives, gross notional amount 19,551 20,196  
Derivatives designated as hedging instruments | Cash flow hedges | Foreign exchange contracts | Other Current Assets      
Derivatives, Fair Value      
Derivative Asset, Fair Value Gross Asset 467 539  
Derivatives designated as hedging instruments | Cash flow hedges | Foreign exchange contracts | Long-term Financing Receivables and Other Assets      
Derivatives, Fair Value      
Derivative Asset, Fair Value Gross Asset 216 124  
Derivatives designated as hedging instruments | Cash flow hedges | Foreign exchange contracts | Other Accrued Liabilities      
Derivatives, Fair Value      
Derivative Liability, Fair Value Gross Liability 193 131  
Derivatives designated as hedging instruments | Cash flow hedges | Foreign exchange contracts | Long-Term Other Liabilities      
Derivatives, Fair Value      
Derivative Liability, Fair Value Gross Liability 87 94  
Derivatives designated as hedging instruments | Net investment hedges | Foreign exchange contracts      
Derivatives, Fair Value      
Total derivatives, gross notional amount 1,860 1,952  
Derivatives designated as hedging instruments | Net investment hedges | Foreign exchange contracts | Other Current Assets      
Derivatives, Fair Value      
Derivative Asset, Fair Value Gross Asset 114 44  
Derivatives designated as hedging instruments | Net investment hedges | Foreign exchange contracts | Long-term Financing Receivables and Other Assets      
Derivatives, Fair Value      
Derivative Asset, Fair Value Gross Asset 66 47  
Derivatives designated as hedging instruments | Net investment hedges | Foreign exchange contracts | Other Accrued Liabilities      
Derivatives, Fair Value      
Derivative Liability, Fair Value Gross Liability 7 10  
Derivatives designated as hedging instruments | Net investment hedges | Foreign exchange contracts | Long-Term Other Liabilities      
Derivatives, Fair Value      
Derivative Liability, Fair Value Gross Liability 4 8  
Derivatives not designated as hedging instruments      
Derivatives, Fair Value      
Total derivatives, gross notional amount 18,538 21,745  
Derivatives not designated as hedging instruments | Other Current Assets      
Derivatives, Fair Value      
Derivative Asset, Fair Value Gross Asset 87 88  
Derivatives not designated as hedging instruments | Long-term Financing Receivables and Other Assets      
Derivatives, Fair Value      
Derivative Asset, Fair Value Gross Asset 89 33  
Derivatives not designated as hedging instruments | Other Accrued Liabilities      
Derivatives, Fair Value      
Derivative Liability, Fair Value Gross Liability 87 82  
Derivatives not designated as hedging instruments | Long-Term Other Liabilities      
Derivatives, Fair Value      
Derivative Liability, Fair Value Gross Liability 63 25  
Derivatives not designated as hedging instruments | Foreign exchange contracts      
Derivatives, Fair Value      
Total derivatives, gross notional amount 18,238 21,384  
Derivatives not designated as hedging instruments | Foreign exchange contracts | Other Current Assets      
Derivatives, Fair Value      
Derivative Asset, Fair Value Gross Asset 79 82  
Derivatives not designated as hedging instruments | Foreign exchange contracts | Long-term Financing Receivables and Other Assets      
Derivatives, Fair Value      
Derivative Asset, Fair Value Gross Asset 89 32  
Derivatives not designated as hedging instruments | Foreign exchange contracts | Other Accrued Liabilities      
Derivatives, Fair Value      
Derivative Liability, Fair Value Gross Liability 87 82  
Derivatives not designated as hedging instruments | Foreign exchange contracts | Long-Term Other Liabilities      
Derivatives, Fair Value      
Derivative Liability, Fair Value Gross Liability 63 25  
Derivatives not designated as hedging instruments | Other derivatives      
Derivatives, Fair Value      
Total derivatives, gross notional amount 300 361  
Derivatives not designated as hedging instruments | Other derivatives | Other Current Assets      
Derivatives, Fair Value      
Derivative Asset, Fair Value Gross Asset $ 8 6  
Derivatives not designated as hedging instruments | Other derivatives | Long-term Financing Receivables and Other Assets      
Derivatives, Fair Value      
Derivative Asset, Fair Value Gross Asset   $ 1