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Financial Instruments - Gross Notional and Fair Value of Instruments in the Balance Sheets (Details) - USD ($) $ in Millions	Apr. 30, 2021	Oct. 31, 2020
Derivatives, Fair Value
Outstanding Gross Notional	$ 20,296	$ 20,068
Other Current Assets
Derivatives, Fair Value
Derivative asset, fair value	99	152
Long-Term Financing Receivables and Other Assets
Derivatives, Fair Value
Derivative asset, fair value	204	358
Other Accrued Liabilities
Derivatives, Fair Value
Derivative liability, fair value	172	146
Long-Term Other Liabilities
Derivatives, Fair Value
Derivative liability, fair value	127	48
Derivatives designated as hedging instruments
Derivatives, Fair Value
Outstanding Gross Notional	13,505	13,806
Derivatives designated as hedging instruments | Other Current Assets
Derivatives, Fair Value
Derivative asset, fair value	68	109
Derivatives designated as hedging instruments | Long-Term Financing Receivables and Other Assets
Derivatives, Fair Value
Derivative asset, fair value	196	349
Derivatives designated as hedging instruments | Other Accrued Liabilities
Derivatives, Fair Value
Derivative liability, fair value	143	108
Derivatives designated as hedging instruments | Long-Term Other Liabilities
Derivatives, Fair Value
Derivative liability, fair value	124	47
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts
Derivatives, Fair Value
Outstanding Gross Notional	3,850	3,850
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	150	220
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts | Other Accrued Liabilities
Derivatives, Fair Value
Derivative liability, fair value	0	0
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts | Long-Term Other Liabilities
Derivatives, Fair Value
Derivative liability, fair value	0	0
Derivatives designated as hedging instruments | Cash flow hedges | Interest rate contracts
Derivatives, Fair Value
Outstanding Gross Notional	0	500
Derivatives designated as hedging instruments | Cash flow hedges | Interest rate contracts | Other Current Assets
Derivatives, Fair Value
Derivative asset, fair value	0	0
Derivatives designated as hedging instruments | Cash flow 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 | Cash flow hedges | Interest rate contracts | Other Accrued Liabilities
Derivatives, Fair Value
Derivative liability, fair value	0	2
Derivatives designated as hedging instruments | Cash flow hedges | Interest rate contracts | Long-Term Other Liabilities
Derivatives, Fair Value
Derivative liability, fair value	0	0
Derivatives designated as hedging instruments | Cash flow hedges | Foreign exchange contracts
Derivatives, Fair Value
Outstanding Gross Notional	7,843	7,652
Derivatives designated as hedging instruments | Cash flow hedges | Foreign exchange contracts | Other Current Assets
Derivatives, Fair Value
Derivative asset, fair value	48	75
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	28	85
Derivatives designated as hedging instruments | Cash flow hedges | Foreign exchange contracts | Other Accrued Liabilities
Derivatives, Fair Value
Derivative liability, fair value	118	95
Derivatives designated as hedging instruments | Cash flow hedges | Foreign exchange contracts | Long-Term Other Liabilities
Derivatives, Fair Value
Derivative liability, fair value	97	38
Derivatives designated as hedging instruments | Net investment hedges | Foreign exchange contracts
Derivatives, Fair Value
Outstanding Gross Notional	1,812	1,804
Derivatives designated as hedging instruments | Net investment hedges | Foreign exchange contracts | Other Current Assets
Derivatives, Fair Value
Derivative asset, fair value	20	34
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	18	44
Derivatives designated as hedging instruments | Net investment hedges | Foreign exchange contracts | Other Accrued Liabilities
Derivatives, Fair Value
Derivative liability, fair value	25	11
Derivatives designated as hedging instruments | Net investment hedges | Foreign exchange contracts | Long-Term Other Liabilities
Derivatives, Fair Value
Derivative liability, fair value	27	9
Derivatives not designated as hedging instruments
Derivatives, Fair Value
Outstanding Gross Notional	6,791	6,262
Derivatives not designated as hedging instruments | Other Current Assets
Derivatives, Fair Value
Derivative asset, fair value	31	43
Derivatives not designated as hedging instruments | Long-Term Financing Receivables and Other Assets
Derivatives, Fair Value
Derivative asset, fair value	8	9
Derivatives not designated as hedging instruments | Other Accrued Liabilities
Derivatives, Fair Value
Derivative liability, fair value	29	38
Derivatives not designated as hedging instruments | Long-Term Other Liabilities
Derivatives, Fair Value
Derivative liability, fair value	3	1
Derivatives not designated as hedging instruments | Foreign exchange contracts
Derivatives, Fair Value
Outstanding Gross Notional	6,683	6,157
Derivatives not designated as hedging instruments | Foreign exchange contracts | Other Current Assets
Derivatives, Fair Value
Derivative asset, fair value	29	43
Derivatives not designated as hedging instruments | Foreign exchange contracts | Long-Term Financing Receivables and Other Assets
Derivatives, Fair Value
Derivative asset, fair value	8	9
Derivatives not designated as hedging instruments | Foreign exchange contracts | Other Accrued Liabilities
Derivatives, Fair Value
Derivative liability, fair value	29	35
Derivatives not designated as hedging instruments | Foreign exchange contracts | Long-Term Other Liabilities
Derivatives, Fair Value
Derivative liability, fair value	3	1
Derivatives not designated as hedging instruments | Other derivatives
Derivatives, Fair Value
Outstanding Gross Notional	108	105
Derivatives not designated as hedging instruments | Other derivatives | Other Current Assets
Derivatives, Fair Value
Derivative asset, fair value	2	0
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	3
Derivatives not designated as hedging instruments | Other derivatives | Long-Term Other Liabilities
Derivatives, Fair Value
Derivative liability, fair value	$ 0	$ 0

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- 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.

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