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STOCKHOLDERS' EQUITY - Reclassifications out of accumulated other comprehensive income (Details) - USD ($)
$ in Millions
 12 Months Ended
Oct. 31, 2023
Oct. 31, 2022
Oct. 31, 2021
Unrealized gains (losses) on derivatives $ 0 $ 34  
Amounts reclassified into earnings related to derivative instruments, tax expense (benefit) 0 (8) $ 4
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax 0 26 $ (13)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax (2) (28)  
Amortization of prior service benefit 1 1  
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax (1) (27)  
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax 0 7  
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax (1) (20)  
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax (1) 6  
Cost of Product and Services      
Unrealized gains (losses) on derivatives 2 36  
Interest Expense      
Unrealized gains (losses) on derivatives $ (2) $ (2)