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STOCKHOLDERS' EQUITY - Stock Repurchase Program (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2023
Apr. 30, 2022
Apr. 30, 2023
Apr. 30, 2022
Mar. 01, 2023
Jan. 09, 2023
Feb. 18, 2021
2021 Repurchase Program [Member]              
Share repurchase program              
Share repurchase program authorized amount             $ 2,000
Shares repurchased and retired during period, (Shares) 162,399 1,751,000 661,739 4,658,000      
Shares repurchased and retired during period, (Value) $ 24 $ 234 $ 99 $ 681      
Remaining authorized repurchase amount under share repurchase program $ 1,939   $ 1,939   $ 339    
2023 Repurchase Program              
Share repurchase program              
Share repurchase program authorized amount           $ 2,000  
Shares repurchased and retired during period, (Shares) 443,690   443,690        
Shares repurchased and retired during period, (Value) $ 61   $ 61