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DERIVATIVES, Effect of derivative instruments on Consolidated Statement of Operations (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2021 | Apr. 30, 2020 | Apr. 30, 2021 | Apr. 30, 2020
Derivative |  |  |  |
Loss reclassified from accumulated other comprehensive loss into cost of sales | $ (6) | $ 1 | $ (14) | $ 1
Interest Expense |  |  |  |
Derivative |  |  |  |
Loss reclassified from accumulated other comprehensive loss into cost of sales | 0 | (1) | 0 | (1)
Cost of Products and Services |  |  |  |
Derivative |  |  |  |
Loss reclassified from accumulated other comprehensive loss into cost of sales | (6) | 2 | (14) | 2
Cash Flow Hedging | Cost of Products and Services |  |  |  |
Derivative |  |  |  |
Cash flow hedge net gain to be reclassified within next Twelve Months | 0 |  |  |
Derivatives Designated as Hedging Instrument | Cash Flow Hedging | Foreign Exchange Contracts | Accumulated Other Comprehensive Income (Loss) |  |  |  |
Derivative |  |  |  |
Gain (loss) recognized in accumulated other comprehensive loss | 0 | 2 | (6) | 3
Derivatives Designated as Hedging Instrument | Cash Flow Hedging | Foreign Exchange Contracts | Interest Expense |  |  |  |
Derivative |  |  |  |
Loss reclassified from accumulated other comprehensive loss into cost of sales | 0 | (1) | 0 | (1)
Derivatives Designated as Hedging Instrument | Cash Flow Hedging | Foreign Exchange Contracts | Cost of Products and Services |  |  |  |
Derivative |  |  |  |
Loss reclassified from accumulated other comprehensive loss into cost of sales | (6) | 2 | (14) | 2
Loss recognized in other income (expense) | 0 | 2 | 0 | 2
Derivatives Designated as Hedging Instrument | Net Investment Hedging [Member] | Foreign Exchange Contracts | Accumulated Other Comprehensive Income (Loss) |  |  |  |
Derivative |  |  |  |
Gain (loss) recognized in accumulated other comprehensive loss | 1 | 1 | (3) | 1
Derivatives Not Designated as Hedging Instruments | Other income (expense) |  |  |  |
Derivative |  |  |  |
Loss recognized in other income (expense) | $ 3 | $ (1) | $ (1) | $ (3)

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- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994 + Details
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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959 + Details
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- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624177-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + Details
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- Definition Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121558989&loc=d3e80720-113993 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580 + Details
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