Intangibles - Schedule of Intangible Assets (Details) - USD ($) $ in Millions	9 Months Ended
	Jul. 31, 2018	Oct. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross	$ 713	$ 183
Accumulated Amortization	240	180
Total	$ 473	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	87	84
Total	$ 25	1
Technology and patents
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Useful Lives	7 years
Gross	$ 601	98
Accumulated Amortization	153	96
Total	$ 448	$ 2