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STOCKHOLDERS' EQUITY - Reclassifications out of accumulated comprehensive income (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Jul. 31, 2023 | Jul. 31, 2022 | Jul. 31, 2023 | Jul. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives |  |  |  |
Unrealized gain (loss) on derivatives | $ (2) | $ 11 | $ 0 | $ 19
Amounts reclassified into earnings related to derivative instruments, tax | 1 | (3) | 0 | (5)
Unrealized gain (loss) on derivatives after reclassification and after Tax | (1) | 8 | 0 | 14
Actuarial net loss | 1 | (7) | 1 | (19)
Prior service benefit | 0 | 1 | 1 | 1
Actuarial net loss and prior service benefit reclassified, before tax | 1 | (6) | 2 | (18)
Tax on actuarial net loss and prior service benefit reclassified | 0 | 2 | (1) | 5
Actuarial net loss and prior service benefit reclassified, net of tax | 1 | (4) | 1 | (13)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | 0 | 4 | 1 | 1
Cost of Products and Services |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives |  |  |  |
Unrealized gain (loss) on derivatives | (2) | 12 | 1 | 20
Interest Expense |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives |  |  |  |
Unrealized gain (loss) on derivatives | $ 0 | $ (1) | $ (1) | $ (1)

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