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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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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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