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Fair Value (Details) - USD ($)
$ in Millions
Oct. 31, 2022
Oct. 31, 2021
Assets:    
Fair Value $ 2,193 $ 3,043
Derivative Instruments 1,090 282
Total assets 3,346 3,401
Liabilities:    
Derivative Instruments 374 227
Total liabilities 374 227
Fair value, short- and long-term debt 9,600 8,000
Carrying value, short- and long-term debt 11,000 7,500
Corporate debt    
Assets:    
Fair Value 904 1,112
Government debt    
Assets:    
Fair Value 1,289 1,931
Financial institution instruments    
Assets:    
Available-for-Sale Investments 5 5
Marketable equity securities and mutual funds    
Assets:    
Available-for-Sale Investments 58 71
Foreign currency contracts    
Assets:    
Derivative Instruments 1,088 277
Liabilities:    
Derivative Instruments 295 203
Other derivatives    
Assets:    
Derivative Instruments 2 5
Liabilities:    
Derivative Instruments 1 0
Interest rate contracts    
Liabilities:    
Derivative Instruments 78 24
Level 1    
Assets:    
Total assets 1,306 1,946
Liabilities:    
Total liabilities 0 0
Level 1 | Corporate debt    
Assets:    
Fair Value 0 0
Level 1 | Government debt    
Assets:    
Fair Value 1,289 1,931
Level 1 | Financial institution instruments    
Assets:    
Available-for-Sale Investments 0 0
Level 1 | Marketable equity securities and mutual funds    
Assets:    
Available-for-Sale Investments 17 15
Level 1 | Foreign currency contracts    
Assets:    
Derivative Instruments 0 0
Liabilities:    
Derivative Instruments 0 0
Level 1 | Other derivatives    
Assets:    
Derivative Instruments 0 0
Liabilities:    
Derivative Instruments 0 0
Level 1 | Interest rate contracts    
Liabilities:    
Derivative Instruments 0 0
Level 2    
Assets:    
Total assets 2,040 1,455
Liabilities:    
Total liabilities 374 227
Level 2 | Corporate debt    
Assets:    
Fair Value 904 1,112
Level 2 | Government debt    
Assets:    
Fair Value 0 0
Level 2 | Financial institution instruments    
Assets:    
Available-for-Sale Investments 5 5
Level 2 | Marketable equity securities and mutual funds    
Assets:    
Available-for-Sale Investments 41 56
Level 2 | Foreign currency contracts    
Assets:    
Derivative Instruments 1,088 277
Liabilities:    
Derivative Instruments 295 203
Level 2 | Other derivatives    
Assets:    
Derivative Instruments 2 5
Liabilities:    
Derivative Instruments 1 0
Level 2 | Interest rate contracts    
Liabilities:    
Derivative Instruments 78 24
Level 3    
Assets:    
Total assets 0 0
Liabilities:    
Total liabilities 0 0
Level 3 | Corporate debt    
Assets:    
Fair Value 0 0
Level 3 | Government debt    
Assets:    
Fair Value 0 0
Level 3 | Financial institution instruments    
Assets:    
Available-for-Sale Investments 0 0
Level 3 | Marketable equity securities and mutual funds    
Assets:    
Available-for-Sale Investments 0 0
Level 3 | Foreign currency contracts    
Assets:    
Derivative Instruments 0 0
Liabilities:    
Derivative Instruments 0 0
Level 3 | Other derivatives    
Assets:    
Derivative Instruments 0 0
Liabilities:    
Derivative Instruments 0 0
Level 3 | Interest rate contracts    
Liabilities:    
Derivative Instruments $ 0 $ 0