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Financial Instruments - Schedule of Pre-Tax Effect of Derivative Instruments and Related Hedged Items in a Fair Value Hedging Relationship (Details) - Interest and other, net - Interest rate contracts - USD ($) $ in Millions | 12 Months Ended
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Oct. 31, 2018 | Oct. 31, 2017 | Oct. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
(Loss) Gain Recognized in Income on Derivative Instruments | $ (11) | $ (60) | $ 10
(Loss) Gain Recognized on Related Hedged Item | $ 11 | $ 60 | $ (10)

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- Definition Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109977999&loc=d3e76258-113986 + Details
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- Definition Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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