Fair Value - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Jul. 31, 2024	Oct. 31, 2023
Assets:
Cash Equivalents:	$ 1,968	$ 2,489
Derivative Instruments:	200	489
Liabilities:
Derivative Instruments:	241	272
Marketable securities and mutual funds
Liabilities:
Debt securities, restricted	82
Fair Value Measured on a Recurring Basis
Assets:
Total assets	2,354	3,059
Liabilities:
Total liabilities	241	272
Fair Value Measured on a Recurring Basis | Corporate debt
Assets:
Cash Equivalents:	990	589
Fair Value Measured on a Recurring Basis | Government debt
Assets:
Cash Equivalents:	978	1,900
Fair Value Measured on a Recurring Basis | Financial institution instruments
Assets:
Available-for-Sale Investments:	3	3
Fair Value Measured on a Recurring Basis | Marketable securities and mutual funds
Assets:
Available-for-Sale Investments:	183	78
Liabilities:
Debt securities, restricted	82
Fair Value Measured on a Recurring Basis | Foreign currency contracts
Assets:
Derivative Instruments:	197	489
Liabilities:
Derivative Instruments:	207	212
Fair Value Measured on a Recurring Basis | Other derivatives
Assets:
Derivative Instruments:	3	0
Liabilities:
Derivative Instruments:	0	2
Fair Value Measured on a Recurring Basis | Interest rate contracts
Liabilities:
Derivative Instruments:	34	58
Fair Value Measured on a Recurring Basis | Level 1
Assets:
Total assets	1,028	1,933
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:	978	1,900
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 securities and mutual funds
Assets:
Available-for-Sale Investments:	50	33
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 1 | Interest rate contracts
Liabilities:
Derivative Instruments:	0	0
Fair Value Measured on a Recurring Basis | Level 2
Assets:
Total assets	1,326	1,126
Liabilities:
Total liabilities	241	272
Fair Value Measured on a Recurring Basis | Level 2 | Corporate debt
Assets:
Cash Equivalents:	990	589
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:	3	3
Fair Value Measured on a Recurring Basis | Level 2 | Marketable securities and mutual funds
Assets:
Available-for-Sale Investments:	133	45
Fair Value Measured on a Recurring Basis | Level 2 | Foreign currency contracts
Assets:
Derivative Instruments:	197	489
Liabilities:
Derivative Instruments:	207	212
Fair Value Measured on a Recurring Basis | Level 2 | Other derivatives
Assets:
Derivative Instruments:	3	0
Liabilities:
Derivative Instruments:	0	2
Fair Value Measured on a Recurring Basis | Level 2 | Interest rate contracts
Liabilities:
Derivative Instruments:	34	58
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 securities and mutual funds
Assets:
Available-for-Sale Investments:	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
Fair Value Measured on a Recurring Basis | Level 3 | Interest rate contracts
Liabilities:
Derivative Instruments:	$ 0	$ 0