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INCOME TAXES (Details 2) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Oct. 31, 2014
Oct. 31, 2013
Oct. 31, 2012
Comparison of the statutory and effective income tax provision      
U.S. federal income tax provision statutory rate (as a percent) 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
U.S. federal income tax provision at a statutory rate of 35 percent $ 1,679us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate $ 1,919us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate $ 1,657us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Increase (decrease) resulting from:      
State and local income taxes, net of federal income tax benefit 75us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 87us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 73us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
German branch deferred tax write-off   56de_IncomeTaxReconciliationDeferredTaxWriteoff  
Nontaxable foreign partnership (earnings) losses (305)de_IncomeTaxReconciliationNondeductibleForeignPartnershipEarnings 43de_IncomeTaxReconciliationNondeductibleForeignPartnershipEarnings (172)de_IncomeTaxReconciliationNondeductibleForeignPartnershipEarnings
Nondeductible impairment charges 32us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses 29us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses 6us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses
Research and business tax credits (99)us-gaap_IncomeTaxReconciliationTaxCreditsResearch (56)us-gaap_IncomeTaxReconciliationTaxCreditsResearch (10)us-gaap_IncomeTaxReconciliationTaxCreditsResearch
Tax rates on foreign earnings (71)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential (34)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential (69)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
Valuation allowance on foreign deferred taxes 363de_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceForeign (14)de_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceForeign 200de_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceForeign
Other - net (47)us-gaap_IncomeTaxReconciliationOtherAdjustments (84)us-gaap_IncomeTaxReconciliationOtherAdjustments (26)us-gaap_IncomeTaxReconciliationOtherAdjustments
Provision for income taxes 1,626.5us-gaap_IncomeTaxExpenseBenefit 1,945.9us-gaap_IncomeTaxExpenseBenefit 1,659.4us-gaap_IncomeTaxExpenseBenefit
Accumulated earnings of certain foreign subsidiaries for which no provision for U.S. income or foreign withholding taxes has been made 4,677us-gaap_UndistributedEarningsOfForeignSubsidiaries    
Determination of the amount of unrecognized deferred tax liability on unremitted earnings 0us-gaap_DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries    
Cash and cash equivalents and marketable securities held by foreign subsidiaries $ 1,025de_CashAndCashEquivalentsAndMarketableSecuritiesHeldByForeignSubsidiariesEarningsIndefinitelyReinvested