Financial Instruments - Schedule of Gross Notional and Fair Value of Derivative Financial Instruments in the Consolidated Condensed Balance Sheets (Details) - USD ($) $ in Millions	Apr. 30, 2018	Oct. 31, 2017
Derivatives, Fair Value
Outstanding Gross Notional	$ 23,078	$ 24,573
Gross Amount Recognized	200	121
Derivative Liabilities	360	372
Other Current Assets
Derivatives, Fair Value
Gross Amount Recognized	180	109
Other Non-Current Assets
Derivatives, Fair Value
Gross Amount Recognized	20	12
Other Accrued Liabilities
Derivatives, Fair Value
Derivative Liabilities	241	260
Other Non-Current Liabilities
Derivatives, Fair Value
Derivative Liabilities	119	112
Derivatives designated as hedging instruments
Derivatives, Fair Value
Outstanding Gross Notional	18,361	18,649
Derivatives designated as hedging instruments | Other Current Assets
Derivatives, Fair Value
Gross Amount Recognized	147	92
Derivatives designated as hedging instruments | Other Non-Current Assets
Derivatives, Fair Value
Gross Amount Recognized	20	12
Derivatives designated as hedging instruments | Other Accrued Liabilities
Derivatives, Fair Value
Derivative Liabilities	226	245
Derivatives designated as hedging instruments | Other Non-Current Liabilities
Derivatives, Fair Value
Derivative Liabilities	119	112
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts
Derivatives, Fair Value
Outstanding Gross Notional	1,000	2,500
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts | Other Current Assets
Derivatives, Fair Value
Gross Amount Recognized	0	0
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts | Other Non-Current Assets
Derivatives, Fair Value
Gross Amount Recognized	0	0
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts | Other Accrued Liabilities
Derivatives, Fair Value
Derivative Liabilities	1	0
Derivatives designated as hedging instruments | Fair value hedges | Interest rate contracts | Other Non-Current Liabilities
Derivatives, Fair Value
Derivative Liabilities	22	12
Derivatives designated as hedging instruments | Cash flow hedges | Foreign currency contracts
Derivatives, Fair Value
Outstanding Gross Notional	17,361	16,149
Derivatives designated as hedging instruments | Cash flow hedges | Foreign currency contracts | Other Current Assets
Derivatives, Fair Value
Gross Amount Recognized	147	92
Derivatives designated as hedging instruments | Cash flow hedges | Foreign currency contracts | Other Non-Current Assets
Derivatives, Fair Value
Gross Amount Recognized	20	12
Derivatives designated as hedging instruments | Cash flow hedges | Foreign currency contracts | Other Accrued Liabilities
Derivatives, Fair Value
Derivative Liabilities	225	245
Derivatives designated as hedging instruments | Cash flow hedges | Foreign currency contracts | Other Non-Current Liabilities
Derivatives, Fair Value
Derivative Liabilities	97	100
Derivatives not designated as hedging instruments
Derivatives, Fair Value
Outstanding Gross Notional	4,717	5,924
Derivatives not designated as hedging instruments | Other Current Assets
Derivatives, Fair Value
Gross Amount Recognized	33	17
Derivatives not designated as hedging instruments | Other Non-Current Assets
Derivatives, Fair Value
Gross Amount Recognized	0	0
Derivatives not designated as hedging instruments | Other Accrued Liabilities
Derivatives, Fair Value
Derivative Liabilities	15	15
Derivatives not designated as hedging instruments | Other Non-Current Liabilities
Derivatives, Fair Value
Derivative Liabilities	0	0
Derivatives not designated as hedging instruments | Foreign currency contracts
Derivatives, Fair Value
Outstanding Gross Notional	4,606	5,801
Derivatives not designated as hedging instruments | Foreign currency contracts | Other Current Assets
Derivatives, Fair Value
Gross Amount Recognized	32	16
Derivatives not designated as hedging instruments | Foreign currency contracts | Other Non-Current Assets
Derivatives, Fair Value
Gross Amount Recognized	0	0
Derivatives not designated as hedging instruments | Foreign currency contracts | Other Accrued Liabilities
Derivatives, Fair Value
Derivative Liabilities	15	15
Derivatives not designated as hedging instruments | Foreign currency contracts | Other Non-Current Liabilities
Derivatives, Fair Value
Derivative Liabilities	0	0
Derivatives not designated as hedging instruments | Other derivatives
Derivatives, Fair Value
Outstanding Gross Notional	111	123
Derivatives not designated as hedging instruments | Other derivatives | Other Current Assets
Derivatives, Fair Value
Gross Amount Recognized	1	1
Derivatives not designated as hedging instruments | Other derivatives | Other Non-Current Assets
Derivatives, Fair Value
Gross Amount Recognized	0	0
Derivatives not designated as hedging instruments | Other derivatives | Other Accrued Liabilities
Derivatives, Fair Value
Derivative Liabilities	0	0
Derivatives not designated as hedging instruments | Other derivatives | Other Non-Current Liabilities
Derivatives, Fair Value
Derivative Liabilities	$ 0	$ 0