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STOCKHOLDERS' EQUITY - Reclassifications out of accumulated comprehensive income (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2025 | Apr. 30, 2024 | Apr. 30, 2025 | Apr. 30, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Amounts reclassified out of accumulated other comprehensive income (loss) | $ (8) |  | $ (11) |
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 | 2 | 1 | 5 | 4
Amounts reclassified into earnings related to derivative instruments, tax | (1) | 0 | (2) | (1)
Unrealized gain (loss) on derivatives after reclassification and after Tax | 1 | 1 | 3 | 3
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax | (6) | (5) | (6) | (8)
Actuarial net loss and prior service benefit reclassified, before tax | 6 | 5 | 6 | 8
Tax on actuarial net loss and prior service benefit reclassified | (2) | (1) | (2) | (2)
Actuarial net loss and prior service benefit reclassified, net of tax | 4 | 4 | 4 | 6
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | 5 | 5 | 7 | 17
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 | 3 | 2 | 6 | 5
Interest Expense |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | $ (1) | $ (1) | $ (1) | $ (1)

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