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Supplementary Financial Information - Schedule of Interest and Other, Net (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Apr. 30, 2025
Apr. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Interest expense on borrowings $ (114) $ (122) $ (218) $ (238)
Factoring costs (32) (40) (69) (79)
Non-operating retirement-related credits 4 2 10 6
Other, net (6) 5 (12) 14
Interest and other, net $ (148) $ (155) $ (289) $ (297)