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FAIR VALUE MEASUREMENTS - Equity Securities and Investments (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2024
Apr. 30, 2023
Apr. 30, 2024
Apr. 30, 2023
Fair Value Disclosures [Abstract]        
Net gain (loss) on equity securities $ 1 $ (4) $ 4 $ (14)
Equity Securities, FV-NI, Realized Gain (Loss) 0 (4) 0 (15)
Unrealized gain (loss) on equity securities 1 0 4 1
Impairment of Investments $ 0 $ 0 $ 0 $ 0