Supplementary Financial Information - Other Non-Current Liabilities (Details) - USD ($) $ in Millions	Oct. 31, 2023	Oct. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred revenue	$ 1,324	$ 1,171
Tax liability	904	911
Operating lease liabilities	$ 825	$ 875
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other non-current liabilities	Other non-current liabilities
Pension, post-retirement, and post-employment liabilities	$ 545	$ 600
Deferred tax liability	44	121
Other	689	856
Other non-current liabilities	$ 4,331	$ 4,534