Fair Value (Details) - USD ($) $ in Millions	Jan. 31, 2022	Oct. 31, 2021
Assets:
Cash Equivalents	$ 1,974	$ 3,043
Derivative Instruments	490	282
Liabilities:
Derivative Instruments	194	227
Fair value, short- and long-term debt	7,300	8,000
Carrying value, short- and long-term debt	7,100	7,500
Corporate debt
Assets:
Cash Equivalents	1,047	1,112
Government debt
Assets:
Cash Equivalents	927	1,931
Fair Value Measured on a Recurring Basis
Assets:
Total assets	2,533	3,401
Liabilities:
Total liabilities	194	227
Fair Value Measured on a Recurring Basis | Corporate debt
Assets:
Cash Equivalents	1,047	1,112
Fair Value Measured on a Recurring Basis | Government debt
Assets:
Cash Equivalents	927	1,931
Fair Value Measured on a Recurring Basis | Financial institution instruments
Assets:
Available-for-Sale Investments	5	5
Fair Value Measured on a Recurring Basis | Marketable equity securities and mutual funds
Assets:
Available-for-Sale Investments	64	71
Fair Value Measured on a Recurring Basis | Interest rate contracts
Assets:
Derivative Instruments	13	0
Liabilities:
Derivative Instruments	29	24
Fair Value Measured on a Recurring Basis | Foreign currency contracts
Assets:
Derivative Instruments	477	277
Liabilities:
Derivative Instruments	159	203
Fair Value Measured on a Recurring Basis | Other derivatives
Assets:
Derivative Instruments	0	5
Liabilities:
Derivative Instruments	6	0
Fair Value Measured on a Recurring Basis | Level 1
Assets:
Total assets	938	1,946
Liabilities:
Total liabilities	0	0
Fair Value Measured on a Recurring Basis | Level 1 | Corporate debt
Assets:
Cash Equivalents	0	0
Fair Value Measured on a Recurring Basis | Level 1 | Government debt
Assets:
Cash Equivalents	927	1,931
Fair Value Measured on a Recurring Basis | Level 1 | Financial institution instruments
Assets:
Available-for-Sale Investments	0	0
Fair Value Measured on a Recurring Basis | Level 1 | Marketable equity securities and mutual funds
Assets:
Available-for-Sale Investments	11	15
Fair Value Measured on a Recurring Basis | Level 1 | Interest rate contracts
Assets:
Derivative Instruments	0	0
Liabilities:
Derivative Instruments	0	0
Fair Value Measured on a Recurring Basis | Level 1 | Foreign currency contracts
Assets:
Derivative Instruments	0	0
Liabilities:
Derivative Instruments	0	0
Fair Value Measured on a Recurring Basis | Level 1 | Other derivatives
Assets:
Derivative Instruments	0	0
Liabilities:
Derivative Instruments	0	0
Fair Value Measured on a Recurring Basis | Level 2
Assets:
Total assets	1,595	1,455
Liabilities:
Total liabilities	194	227
Fair Value Measured on a Recurring Basis | Level 2 | Corporate debt
Assets:
Cash Equivalents	1,047	1,112
Fair Value Measured on a Recurring Basis | Level 2 | Government debt
Assets:
Cash Equivalents	0	0
Fair Value Measured on a Recurring Basis | Level 2 | Financial institution instruments
Assets:
Available-for-Sale Investments	5	5
Fair Value Measured on a Recurring Basis | Level 2 | Marketable equity securities and mutual funds
Assets:
Available-for-Sale Investments	53	56
Fair Value Measured on a Recurring Basis | Level 2 | Interest rate contracts
Assets:
Derivative Instruments	13	0
Liabilities:
Derivative Instruments	29	24
Fair Value Measured on a Recurring Basis | Level 2 | Foreign currency contracts
Assets:
Derivative Instruments	477	277
Liabilities:
Derivative Instruments	159	203
Fair Value Measured on a Recurring Basis | Level 2 | Other derivatives
Assets:
Derivative Instruments	0	5
Liabilities:
Derivative Instruments	6	0
Fair Value Measured on a Recurring Basis | Level 3
Assets:
Total assets	0	0
Liabilities:
Total liabilities	0	0
Fair Value Measured on a Recurring Basis | Level 3 | Corporate debt
Assets:
Cash Equivalents	0	0
Fair Value Measured on a Recurring Basis | Level 3 | Government debt
Assets:
Cash Equivalents	0	0
Fair Value Measured on a Recurring Basis | Level 3 | Financial institution instruments
Assets:
Available-for-Sale Investments	0	0
Fair Value Measured on a Recurring Basis | Level 3 | Marketable equity securities and mutual funds
Assets:
Available-for-Sale Investments	0	0
Fair Value Measured on a Recurring Basis | Level 3 | Interest rate contracts
Assets:
Derivative Instruments	0	0
Liabilities:
Derivative Instruments	0	0
Fair Value Measured on a Recurring Basis | Level 3 | Foreign currency contracts
Assets:
Derivative Instruments	0	0
Liabilities:
Derivative Instruments	0	0
Fair Value Measured on a Recurring Basis | Level 3 | Other derivatives
Assets:
Derivative Instruments	0	0
Liabilities:
Derivative Instruments	$ 0	$ 0