Fair Value - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Oct. 31, 2025	Oct. 31, 2024
Assets:
Cash Equivalents	$ 1,878	$ 1,332
Derivative Instruments	183	229
Liabilities:
Derivative Instruments	244	182
Marketable securities and mutual funds
Liabilities:
Debt securities, restricted	63	78
Fair Value, Recurring
Assets:
Total assets	2,195	1,748
Liabilities:
Total liabilities	244	182
Fair Value, Recurring | Government debt
Assets:
Cash Equivalents	1,878	1,332
Fair Value, Recurring | Financial institution instruments
Assets:
Available-for-Sale Investments	3	3
Fair Value, Recurring | Marketable securities and mutual funds
Assets:
Available-for-Sale Investments	131	184
Liabilities:
Debt securities, restricted	63	78
Fair Value, Recurring | Interest rate contracts
Assets:
Derivative Instruments	0	4
Liabilities:
Derivative Instruments	1	22
Fair Value, Recurring | Foreign currency contracts
Assets:
Derivative Instruments	182	225
Liabilities:
Derivative Instruments	242	158
Fair Value, Recurring | Other derivatives
Assets:
Derivative Instruments	1	0
Liabilities:
Derivative Instruments	1	2
Level 1 | Fair Value, Recurring
Assets:
Total assets	1,887	1,386
Liabilities:
Total liabilities	0	0
Level 1 | Fair Value, Recurring | Government debt
Assets:
Cash Equivalents	1,878	1,332
Level 1 | Fair Value, Recurring | Financial institution instruments
Assets:
Available-for-Sale Investments	0	0
Level 1 | Fair Value, Recurring | Marketable securities and mutual funds
Assets:
Available-for-Sale Investments	9	54
Level 1 | Fair Value, Recurring | Interest rate contracts
Assets:
Derivative Instruments	0	0
Liabilities:
Derivative Instruments	0	0
Level 1 | Fair Value, Recurring | Foreign currency contracts
Assets:
Derivative Instruments	0	0
Liabilities:
Derivative Instruments	0	0
Level 1 | Fair Value, Recurring | Other derivatives
Assets:
Derivative Instruments	0	0
Liabilities:
Derivative Instruments	0	0
Level 2 | Fair Value, Recurring
Assets:
Total assets	308	362
Liabilities:
Total liabilities	244	182
Level 2 | Fair Value, Recurring | Government debt
Assets:
Cash Equivalents	0	0
Level 2 | Fair Value, Recurring | Financial institution instruments
Assets:
Available-for-Sale Investments	3	3
Level 2 | Fair Value, Recurring | Marketable securities and mutual funds
Assets:
Available-for-Sale Investments	122	130
Level 2 | Fair Value, Recurring | Interest rate contracts
Assets:
Derivative Instruments	0	4
Liabilities:
Derivative Instruments	1	22
Level 2 | Fair Value, Recurring | Foreign currency contracts
Assets:
Derivative Instruments	182	225
Liabilities:
Derivative Instruments	242	158
Level 2 | Fair Value, Recurring | Other derivatives
Assets:
Derivative Instruments	1	0
Liabilities:
Derivative Instruments	1	2
Level 3 | Fair Value, Recurring
Assets:
Total assets	0	0
Liabilities:
Total liabilities	0	0
Level 3 | Fair Value, Recurring | Government debt
Assets:
Cash Equivalents	0	0
Level 3 | Fair Value, Recurring | Financial institution instruments
Assets:
Available-for-Sale Investments	0	0
Level 3 | Fair Value, Recurring | Marketable securities and mutual funds
Assets:
Available-for-Sale Investments	0	0
Level 3 | Fair Value, Recurring | Interest rate contracts
Assets:
Derivative Instruments	0	0
Liabilities:
Derivative Instruments	0	0
Level 3 | Fair Value, Recurring | Foreign currency contracts
Assets:
Derivative Instruments	0	0
Liabilities:
Derivative Instruments	0	0
Level 3 | Fair Value, Recurring | Other derivatives
Assets:
Derivative Instruments	0	0
Liabilities:
Derivative Instruments	$ 0	$ 0