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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)