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DERIVATIVES, Effect of derivative instruments on Consolidated Statement of Operations (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2025 | Jul. 31, 2024 | Jul. 31, 2025 | Jul. 31, 2024
Derivative |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | $ (7) | $ 3 | $ (2) | $ 7
Interest Expense |  |  |  |
Derivative |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | 0 | 0 | (1) | (1)
Cost of Products and Services |  |  |  |
Derivative |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | (7) | 3 | (1) | 8
Derivatives Designated as Hedging Instrument | Cash Flow Hedging | Foreign Exchange Contracts |  |  |  |
Derivative |  |  |  |
Gain (loss) recognized | $ 2 | $ 2 | $ 5 | $ 5
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Cost of revenue | Cost of revenue | Cost of revenue | Cost of revenue
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 | $ 3 | $ (3) | $ (1) | $ (4)
Derivatives Designated as Hedging Instrument | Cash Flow Hedging | Foreign Exchange Contracts | Interest Expense |  |  |  |
Derivative |  |  |  |
Gain (loss) reclassified from accumulated other comprehensive loss into Interest expense | 0 | 0 | (1) | (1)
Derivatives Designated as Hedging Instrument | Cash Flow Hedging | Foreign Exchange Contracts | Cost of Products and Services |  |  |  |
Derivative |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | (7) | 3 | (1) | 8
Derivatives Designated as Hedging Instrument | Net Investment Hedging | Foreign Exchange Contracts | Accumulated Other Comprehensive Income (Loss) |  |  |  |
Derivative |  |  |  |
Gain (loss) recognized in accumulated other comprehensive loss - translation adjustment | 0 | 0 | (1) | 0
Derivatives Not Designated as Hedging Instruments |  |  |  |
Derivative |  |  |  |
Gain (loss) recognized | $ 0 | $ 1 | $ 9 | $ 2
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Other income (expense), net | Other income (expense), net | Other income (expense), net | Other income (expense), net

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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 -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name Accounting Standards Codification -Section 55 -Paragraph 10 -SubTopic 10 -Topic 825 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482881/825-10-55-10 + Details
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