Supplementary Financial Information - Other Non-Current Assets (Details) - USD ($) $ in Millions	Jan. 31, 2023	Oct. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred tax assets	$ 2,453	$ 2,159
Intangible assets	1,858	1,933
Right-of-use assets	1,242	1,236
Deposits and prepaid	564	588
Prepaid pension asset	548	565
Other	822	990
Other non-current assets	$ 7,487	$ 7,471
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other non-current assets	Other non-current assets