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STOCKHOLDERS' EQUITY - Reclassifications out of accumulated comprehensive income (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2025 | Jul. 31, 2024 | Jul. 31, 2025 | Jul. 31, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Amounts reclassified out of accumulated other comprehensive income (loss) | $ (1) |  | $ (12) |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Tax | 0 | $ 0 | 0 | $ 0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax | 0 | 0 | 0 | 8
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | (7) | 3 | (2) | 7
Amounts reclassified into earnings related to derivative instruments, tax | 2 | (1) | 0 | (2)
Unrealized gain (loss) on derivatives after reclassification and after Tax | (5) | 2 | (2) | 5
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax | (7) | (4) | (13) | (12)
Prior service benefit | 1 | 0 | 1 | 0
Actuarial net loss and prior service benefit reclassified, before tax | 8 | 4 | 14 | 12
Tax on actuarial net loss and prior service benefit reclassified | (3) | (2) | (5) | (4)
Actuarial net loss and prior service benefit reclassified, net of tax | 5 | 2 | 9 | 8
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | 0 | 4 | 7 | 21
Other Income (Expense) |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Amounts reclassified out of accumulated other comprehensive income (loss) | 0 | 0 | 0 | 8
Foreign Currency Gain (Loss) |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Amounts reclassified out of accumulated other comprehensive income (loss) | 0 | 0 | 0 | 8
Cost of Products and Services |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | (7) | 3 | (1) | 8
Interest Expense |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | $ 0 | $ 0 | $ (1) | $ (1)

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