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Goodwill and Intangible Assets - Schedule of Acquired Intangible Assets (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Oct. 31, 2018 | Oct. 31, 2017
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | $ 713 | $ 183
Accumulated Amortization | 260 | 180
Total | $ 453 | 3
Customer contracts, customer lists and distribution agreements |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Useful Lives | 8 years |
Gross | $ 112 | 85
Accumulated Amortization | 88 | 84
Total | $ 24 | 1
Technology and patents |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Useful Lives | 7 years |
Gross | $ 601 | 98
Accumulated Amortization | 172 | 96
Total | $ 429 | $ 2

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