Fair Value (Details) - USD ($) $ in Millions	Oct. 31, 2023	Oct. 31, 2022
Assets:
Fair Value	$ 2,489	$ 2,193
Derivative Instruments	489	1,090
Total assets	3,059	3,346
Liabilities:
Derivative Instruments	272	374
Total liabilities	272	374
Fair value, short- and long-term debt	8,500	9,600
Carrying value, short- and long-term debt	9,500	11,000
Corporate debt
Assets:
Fair Value	589	904
Government debt
Assets:
Fair Value	1,900	1,289
Financial institution instruments
Assets:
Available-for-Sale Investments	3	5
Marketable securities and mutual funds
Assets:
Available-for-Sale Investments	78	58
Foreign currency contracts
Assets:
Derivative Instruments	489	1,088
Liabilities:
Derivative Instruments	212	295
Other derivatives
Assets:
Derivative Instruments	0	2
Liabilities:
Derivative Instruments	2	1
Interest rate contracts
Liabilities:
Derivative Instruments	58	78
Level 1
Assets:
Total assets	1,933	1,306
Liabilities:
Total liabilities	0	0
Level 1 | Corporate debt
Assets:
Fair Value	0	0
Level 1 | Government debt
Assets:
Fair Value	1,900	1,289
Level 1 | Financial institution instruments
Assets:
Available-for-Sale Investments	0	0
Level 1 | Marketable securities and mutual funds
Assets:
Available-for-Sale Investments	33	17
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	1,126	2,040
Liabilities:
Total liabilities	272	374
Level 2 | Corporate debt
Assets:
Fair Value	589	904
Level 2 | Government debt
Assets:
Fair Value	0	0
Level 2 | Financial institution instruments
Assets:
Available-for-Sale Investments	3	5
Level 2 | Marketable securities and mutual funds
Assets:
Available-for-Sale Investments	45	41
Level 2 | Foreign currency contracts
Assets:
Derivative Instruments	489	1,088
Liabilities:
Derivative Instruments	212	295
Level 2 | Other derivatives
Assets:
Derivative Instruments	0	2
Liabilities:
Derivative Instruments	2	1
Level 2 | Interest rate contracts
Liabilities:
Derivative Instruments	58	78
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 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