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Discontinued Operations - Narrative (Details) - Everett SpinCo, Inc. and Seattle SpinCo, Inc. - Spinoff - USD ($) $ in Millions | 12 Months Ended
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Oct. 31, 2017 | Oct. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Depreciation and amortization | $ 526 | $ 1,524
Purchases of property, plant and equipment | $ 158 | $ 331

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- Definition Amount of capital expenditure attributable to discontinued operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 + Details
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