v3.8.0.1

Financial Instruments - Gross Notional and Fair Value of Derivative Instruments in the Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Millions | Apr. 30, 2018 | Oct. 31, 2017
--- | --- | ---
Derivatives, Fair Value |  |
Outstanding Gross Notional | $ 27,616 | $ 28,294
Other Current Assets |  |
Derivatives, Fair Value |  |
Derivative asset, fair value | 201 | 202
Long-Term Financing Receivables and Other Assets |  |
Derivatives, Fair Value |  |
Derivative asset, fair value | 38 | 58
Other Accrued Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | 205 | 232
Long-Term Other Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | 473 | 245
Derivatives designated as hedging instruments |  |
Derivatives, Fair Value |  |
Outstanding Gross Notional | 19,653 | 18,646
Derivatives designated as hedging instruments | Other Current Assets |  |
Derivatives, Fair Value |  |
Derivative asset, fair value | 112 | 140
Derivatives designated as hedging instruments | Long-Term Financing Receivables and Other Assets |  |
Derivatives, Fair Value |  |
Derivative asset, fair value | 36 | 55
Derivatives designated as hedging instruments | Other Accrued Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | 155 | 153
Derivatives designated as hedging instruments | Long-Term Other Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | 461 | 237
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts |  |
Derivatives, Fair Value |  |
Outstanding Gross Notional | 9,500 | 9,500
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts | Other Current Assets |  |
Derivatives, Fair Value |  |
Derivative asset, fair value | 0 | 0
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 | 0 | 0
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts | Other Accrued Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | 17 | 16
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts | Long-Term Other Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | 335 | 126
Derivatives designated as hedging instruments | Cash flow hedges | Foreign exchange contracts |  |
Derivatives, Fair Value |  |
Outstanding Gross Notional | 8,381 | 7,202
Derivatives designated as hedging instruments | Cash flow hedges | Foreign exchange contracts | Other Current Assets |  |
Derivatives, Fair Value |  |
Derivative asset, fair value | 90 | 105
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 | 24 | 45
Derivatives designated as hedging instruments | Cash flow hedges | Foreign exchange contracts | Other Accrued Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | 105 | 101
Derivatives designated as hedging instruments | Cash flow hedges | Foreign exchange contracts | Long-Term Other Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | 106 | 70
Derivatives designated as hedging instruments | Net investment hedges | Foreign exchange contracts |  |
Derivatives, Fair Value |  |
Outstanding Gross Notional | 1,772 | 1,944
Derivatives designated as hedging instruments | Net investment hedges | Foreign exchange contracts | Other Current Assets |  |
Derivatives, Fair Value |  |
Derivative asset, fair value | 22 | 35
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 | 12 | 10
Derivatives designated as hedging instruments | Net investment hedges | Foreign exchange contracts | Other Accrued Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | 33 | 36
Derivatives designated as hedging instruments | Net investment hedges | Foreign exchange contracts | Long-Term Other Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | 20 | 41
Derivatives not designated as hedging instruments |  |
Derivatives, Fair Value |  |
Outstanding Gross Notional | 7,963 | 9,648
Derivatives not designated as hedging instruments | Other Current Assets |  |
Derivatives, Fair Value |  |
Derivative asset, fair value | 89 | 62
Derivatives not designated as hedging instruments | Long-Term Financing Receivables and Other Assets |  |
Derivatives, Fair Value |  |
Derivative asset, fair value | 2 | 3
Derivatives not designated as hedging instruments | Other Accrued Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | 50 | 79
Derivatives not designated as hedging instruments | Long-Term Other Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | 12 | 8
Derivatives not designated as hedging instruments | Foreign exchange contracts |  |
Derivatives, Fair Value |  |
Outstanding Gross Notional | 7,874 | 9,552
Derivatives not designated as hedging instruments | Foreign exchange contracts | Other Current Assets |  |
Derivatives, Fair Value |  |
Derivative asset, fair value | 88 | 61
Derivatives not designated as hedging instruments | Foreign exchange contracts | Long-Term Financing Receivables and Other Assets |  |
Derivatives, Fair Value |  |
Derivative asset, fair value | 2 | 3
Derivatives not designated as hedging instruments | Foreign exchange contracts | Other Accrued Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | 50 | 79
Derivatives not designated as hedging instruments | Foreign exchange contracts | Long-Term Other Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | 12 | 8
Derivatives not designated as hedging instruments | Other derivatives |  |
Derivatives, Fair Value |  |
Outstanding Gross Notional | 89 | 96
Derivatives not designated as hedging instruments | Other derivatives | Other Current Assets |  |
Derivatives, Fair Value |  |
Derivative asset, fair value | 1 | 1
Derivatives not designated as hedging instruments | Other derivatives | Long-Term Financing Receivables and Other Assets |  |
Derivatives, Fair Value |  |
Derivative asset, fair value | 0 | 0
Derivatives not designated as hedging instruments | Other derivatives | Other Accrued Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | 0 | 0
Derivatives not designated as hedging instruments | Other derivatives | Long-Term Other Liabilities |  |
Derivatives, Fair Value |  |
Derivative liability, fair value | $ 0 | $ 0

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226000-175313 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=82924980&loc=SL51823488-111719 + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=82924980&loc=SL51823488-111719 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226000-175313 + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DerivativesFairValueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherCurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherCurrentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_FairValueHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_NetInvestmentHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_OtherContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |