v3.26.1
STOCKHOLDER'S EQUITY - Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2026
Apr. 30, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance     $ 5,881  
Other comprehensive income (loss) before reclassifications $ (42) $ 150 14 $ 76
Amounts reclassified out of accumulated other comprehensive gain (loss) (9) (2) (17) (7)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent 0 2 1 2
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Total (51) 150 (2) 71
Ending Balance 6,331   6,331  
Foreign currency translation        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance (13) (209) (66) (136)
Other comprehensive income (loss) before reclassifications (40) 152 9 79
Amounts reclassified out of accumulated other comprehensive gain (loss) 0 0 0 0
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent (2) 0 2 0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Total (42) 152 11 79
Ending Balance (55) (57) (55) (57)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance (268) (317) (264) (317)
Other comprehensive income (loss) before reclassifications (2) 0 (2) 0
Amounts reclassified out of accumulated other comprehensive gain (loss) (1) 2 (1) 2
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent 1 0 (3) 0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Total (2) 2 (6) 2
Ending Balance (270) (315) (270) (315)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance 82 83 82 89
Other comprehensive income (loss) before reclassifications 0 (2) 7 (3)
Amounts reclassified out of accumulated other comprehensive gain (loss) (8) (4) (16) (9)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent 1 2 2 2
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Total (7) (4) (7) (10)
Ending Balance 75 79 75 79
AOCI Attributable to Parent        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance (199) (443) (248) (364)
Ending Balance $ (250) $ (293) $ (250) $ (293)