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STOCKHOLDER'S EQUITY - Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jul. 31, 2021
Jul. 31, 2020
Jul. 31, 2021
Jul. 31, 2020
Beginning Balance $ (452)   $ (522)  
Other comprehensive income (loss) before reclassifications (17)   18  
Amounts reclassified out of accumulated other comprehensive income (loss) 20   65  
Tax expense (benefit) (5)   (15)  
Other comprehensive income (loss) (2) $ 62 68 $ 38
Ending Balance (454)   (454)  
Foreign Currency Translation        
Beginning Balance (150)   (194)  
Other comprehensive income (loss) before reclassifications (17)   27  
Amounts reclassified out of accumulated other comprehensive income (loss) 0   0  
Tax expense (benefit) 0   0  
Other comprehensive income (loss) (17)   27  
Ending Balance (167)   (167)  
Prior Service Credits        
Beginning Balance 124   125  
Other comprehensive income (loss) before reclassifications 0   0  
Amounts reclassified out of accumulated other comprehensive income (loss) 0   (1)  
Tax expense (benefit) 0   0  
Other comprehensive income (loss) 0   (1)  
Ending Balance 124   124  
Actuarial Losses        
Beginning Balance (421)   (442)  
Other comprehensive income (loss) before reclassifications (1)   (4)  
Amounts reclassified out of accumulated other comprehensive income (loss) 15   47  
Tax expense (benefit) (3)   (11)  
Other comprehensive income (loss) 11   32  
Ending Balance (410)   (410)  
Unrealized Gains (Losses) on Derivatives        
Beginning Balance (5)   (11)  
Other comprehensive income (loss) before reclassifications 1   (5)  
Amounts reclassified out of accumulated other comprehensive income (loss) 5   19  
Tax expense (benefit) (2)   (4)  
Other comprehensive income (loss) 4   10  
Ending Balance $ (1)   $ (1)