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Intangibles - Schedule of Intangible Assets (Details) - USD ($)
$ in Millions
6 Months Ended
Apr. 30, 2018
Oct. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Gross $ 703 $ 183
Accumulated Amortization 220 180
Total $ 483 3
Customer contracts, customer lists and distribution agreements    
Finite-Lived Intangible Assets [Line Items]    
Weighted-Average Useful Lives 8 years  
Gross $ 112 85
Accumulated Amortization 86 84
Total $ 26 1
Technology and patents    
Finite-Lived Intangible Assets [Line Items]    
Weighted-Average Useful Lives 7 years  
Gross $ 591 98
Accumulated Amortization 134 96
Total $ 457 $ 2