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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, 2025 | Apr. 30, 2024 | Apr. 30, 2025 | Apr. 30, 2024
Derivative |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | $ 2 | $ 1 | $ 5 | $ 4
Interest Expense |  |  |  |
Derivative |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | (1) | (1) | (1) | (1)
Cost of Products and Services |  |  |  |
Derivative |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | 3 | 2 | 6 | 5
Derivatives Designated as Hedging Instrument | Cash Flow Hedging | Foreign Exchange Contracts |  |  |  |
Derivative |  |  |  |
Gain (loss) recognized | $ 2 | $ 2 | $ 3 | $ 3
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 | $ (18) | $ 9 | $ (4) | $ (1)
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 | (1) | (1) | (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 | 3 | 2 | 6 | 5
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 | (3) | 0 | (1) | 0
Derivatives Not Designated as Hedging Instruments |  |  |  |
Derivative |  |  |  |
Gain (loss) recognized | $ 11 | $ 3 | $ 9 | $ 1
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 + Details
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- Definition Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480627/815-20-45-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A + Details
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- Definition Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-15 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Subparagraph (c) -SubTopic 10 -Topic 815 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C + Details
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