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Segment Information - Revenue by Geographic Region (Details) - USD ($)
$ in Millions
 12 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2019
Segment Reporting Information      
Net revenue $ 27,784 $ 26,982 $ 29,135
Net property, plant and equipment:      
Property, plant and equipment 5,613 5,625  
U.S.      
Segment Reporting Information      
Net revenue 8,850 9,162 9,582
Net property, plant and equipment:      
Property, plant and equipment 2,811 2,762  
Americas excluding U.S.      
Segment Reporting Information      
Net revenue 1,825 1,700 1,922
Total Americas      
Segment Reporting Information      
Net revenue 10,675 10,862 11,504
Europe, Middle East and Africa      
Segment Reporting Information      
Net revenue 10,329 9,745 10,828
Asia Pacific and Japan      
Segment Reporting Information      
Net revenue 6,780 6,375 $ 6,803
Other countries      
Net property, plant and equipment:      
Property, plant and equipment $ 2,802 $ 2,863