Selected Quarterly Financial Data (unaudited) - Schedule of Selected Quarterly Data (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Oct. 31, 2019	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Sales and revenues, net	$ 2,780	$ 3,042	$ 2,996	$ 2,433	$ 3,317	$ 2,606	$ 2,422	$ 1,905	$ 11,251	$ 10,250	$ 8,570
Gross Profit	459	495	455	407	573	470	395	335
Total before tax									243	368	54
Income from continuing operations, net of tax									221	340	29
Income from discontinued operations, net of tax									0	0	1
Income from discontinued operations, net of tax									0	0	1
Net income (loss)	$ 102	$ 156	$ (48)	$ 11	$ 188	$ 170	$ 55	$ (73)	$ 243	$ 368	$ 55
Basic: Loss from Continuing Operations (in dollars per share)	$ 1.03	$ 1.57	$ (0.48)	$ 0.11	$ 1.90	$ 1.72	$ 0.56	$ (0.74)	$ 2.23	$ 3.44	$ 0.31
Basic: Income (Loss) from Discontinued Operations (in dollars per share)									0	0	0.01
Basic (in dollars per share)									2.23	3.44	0.32
Diluted: Loss from Continuing Operations (in dollars per share)	$ 1.02	$ 1.56	$ (0.48)	$ 0.11	$ 1.89	$ 1.71	$ 0.55	$ (0.74)	2.22	3.41	0.31
Diluted: Income (Loss) from Discontinued Operations (in dollars per share)									0	0	0.01
Diluted (in dollars per share)									$ 2.22	$ 3.41	$ 0.32
Basic (in shares)									99.3	98.9	93.0
Diluted (in shares)									99.5	99.6	93.5
Asset impairment charges									$ 7	$ 14	$ 13
Goodwill	$ 38				$ 38				$ 38	$ 38