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Supplementary Financial Information - Other Non-Current Liabilities (Details) - USD ($)
$ in Millions
Apr. 30, 2023
Oct. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Deferred revenue $ 1,215 $ 1,171
Tax liability 934 931
Operating lease liability $ 885 $ 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 $ 599 $ 600
Deferred tax liability 37 121
Other 786 858
Other non-current liabilities $ 4,456 $ 4,556