Supplementary Financial Information - Other Non-Current Liabilities (Details) - USD ($) $ in Millions	Jan. 31, 2023	Oct. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred revenue	$ 1,187	$ 1,171
Tax liability	925	931
Operating lease liabilities	903	875
Pension, post-retirement, and post-employment liabilities	602	600
Deferred tax liability	52	121
Other	819	858
Other non-current liabilities	$ 4,488	$ 4,556
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other non-current liabilities	Other non-current liabilities