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STOCKHOLDER'S EQUITY - Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Apr. 30, 2025
Apr. 30, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance     $ 5,105  
Other comprehensive income (loss) before reclassifications $ 150 $ (28) 76 $ (4)
Amounts reclassified out of accumulated other comprehensive gain (loss) (2) 2 (7) 2
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent 2 (1) 2 (1)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Total 150 (27) 71 (3)
Ending Balance 5,477   5,477  
Foreign currency translation        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance (209) (140) (136) (167)
Other comprehensive income (loss) before reclassifications 152 (32) 79 (5)
Amounts reclassified out of accumulated other comprehensive gain (loss) 0 0 0 0
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent 0 0 0 0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Total 152 (32) 79 (5)
Ending Balance (57) (172) (57) (172)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance (317) (387) (317) (388)
Other comprehensive income (loss) before reclassifications 0 0 0 0
Amounts reclassified out of accumulated other comprehensive gain (loss) 2 5 2 7
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent 0 (1) 0 (2)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Total 2 4 2 5
Ending Balance (315) (383) (315) (383)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance 83 85 89 89
Other comprehensive income (loss) before reclassifications (2) 4 (3) 1
Amounts reclassified out of accumulated other comprehensive gain (loss) (4) (3) (9) (5)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent 2 0 2 1
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Total (4) 1 (10) (3)
Ending Balance 79 86 79 86
AOCI Attributable to Parent        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance (443) (442) (364) (466)
Ending Balance $ (293) $ (469) $ (293) $ (469)