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Supplementary Financial Information - Property, Plant and Equipment, Net (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2018
Oct. 31, 2017
Oct. 31, 2016
Property, Plant and Equipment, Net      
Property, plant and equipment, gross $ 6,109 $ 5,958  
Accumulated depreciation (3,911) (4,080)  
Property, plant and equipment, net 2,198 1,878  
Depreciation expense 448 353 $ 316
Land, buildings and leasehold improvements      
Property, Plant and Equipment, Net      
Property, plant and equipment, gross 1,893 2,082  
Machinery and equipment, including equipment held for lease      
Property, Plant and Equipment, Net      
Property, plant and equipment, gross $ 4,216 $ 3,876