Fair Value (Details) - USD ($) $ in Millions	Apr. 30, 2022	Oct. 31, 2021
Assets:
Cash Equivalents:	$ 3,293	$ 3,043
Derivative Instruments:	1,009	282
Liabilities:
Derivative Instruments:	305	227
Fair value, short- and long-term debt	8,400	8,000
Carrying value, short- and long-term debt	9,000	7,500
Corporate debt
Assets:
Cash Equivalents:	735	1,112
Government debt
Assets:
Cash Equivalents:	2,558	1,931
Fair Value Measured on a Recurring Basis
Assets:
Total assets	4,361	3,401
Liabilities:
Total liabilities	305	227
Fair Value Measured on a Recurring Basis | Corporate debt
Assets:
Cash Equivalents:	735	1,112
Fair Value Measured on a Recurring Basis | Government debt
Assets:
Cash Equivalents:	2,558	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:	54	71
Fair Value Measured on a Recurring Basis | Interest rate contracts
Assets:
Derivative Instruments:	3	0
Liabilities:
Derivative Instruments:	58	24
Fair Value Measured on a Recurring Basis | Foreign currency contracts
Assets:
Derivative Instruments:	1,004	277
Liabilities:
Derivative Instruments:	238	203
Fair Value Measured on a Recurring Basis | Other derivatives
Assets:
Derivative Instruments:	2	5
Liabilities:
Derivative Instruments:	9	0
Fair Value Measured on a Recurring Basis | Level 1
Assets:
Total assets	2,564	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:	2,558	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:	6	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	1,797	1,455
Liabilities:
Total liabilities	305	227
Fair Value Measured on a Recurring Basis | Level 2 | Corporate debt
Assets:
Cash Equivalents:	735	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:	48	56
Fair Value Measured on a Recurring Basis | Level 2 | Interest rate contracts
Assets:
Derivative Instruments:	3	0
Liabilities:
Derivative Instruments:	58	24
Fair Value Measured on a Recurring Basis | Level 2 | Foreign currency contracts
Assets:
Derivative Instruments:	1,004	277
Liabilities:
Derivative Instruments:	238	203
Fair Value Measured on a Recurring Basis | Level 2 | Other derivatives
Assets:
Derivative Instruments:	2	5
Liabilities:
Derivative Instruments:	9	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