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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 (Rollforward)        
Beginning Balance $ (381)   $ (305)  
Other comprehensive income (loss) before reclassifications 102   31  
Amounts reclassified out of accumulated other comprehensive income (loss) (8)   (11)  
Tax expense (benefit) 7   (5)  
Other comprehensive income (loss) 101 $ (21) 25 $ (10)
Ending Balance (280)   (280)  
Foreign Currency Translation        
AOCI (Rollforward)        
Beginning Balance (408)   (323)  
Other comprehensive income (loss) before reclassifications 120   35  
Amounts reclassified out of accumulated other comprehensive income (loss) 0   0  
Tax expense (benefit) 0   0  
Other comprehensive income (loss) 120   35  
Ending Balance (288)   (288)  
Prior Service Credits        
AOCI (Rollforward)        
Beginning Balance 121   121  
Other comprehensive income (loss) before reclassifications 0   0  
Amounts reclassified out of accumulated other comprehensive income (loss) 0   0  
Tax expense (benefit) 0   0  
Other comprehensive income (loss) 0   0  
Ending Balance 121   121  
Actuarial Losses        
AOCI (Rollforward)        
Beginning Balance (112)   (112)  
Other comprehensive income (loss) before reclassifications 0   0  
Amounts reclassified out of accumulated other comprehensive income (loss) (6)   (6)  
Tax expense (benefit) 2   (2)  
Other comprehensive income (loss) (4)   (4)  
Ending Balance (116)   (116)  
Unrealized Gains (Losses) on Derivatives        
AOCI (Rollforward)        
Beginning Balance 18   9  
Other comprehensive income (loss) before reclassifications (18)   (4)  
Amounts reclassified out of accumulated other comprehensive income (loss) (2)   (5)  
Tax expense (benefit) 5   (3)  
Other comprehensive income (loss) (15)   (6)  
Ending Balance $ 3   $ 3