Supplementary Financial Information - Other Non-Current Assets (Details) - USD ($) $ in Millions	Oct. 31, 2022	Oct. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred tax assets	$ 2,167	$ 2,915
Intangible assets	1,933	784
Right-of-use assets	1,236	1,192
Prepaid pension asset and post-retirement benefit assets	642	874
Deposits and prepaid	474	626
Other	991	697
Other non-current assets, total	$ 7,443	$ 7,088