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INCOME TAXES - Current and long-term income tax assets and liabilities (Details) - USD ($)
$ in Millions
Oct. 31, 2020
Oct. 31, 2019
Income Tax Disclosure [Abstract]    
Current income tax assets (included within other current assets) $ 89 $ 68
Long-term income tax assets (included within other assets) 6 4
Current income tax liabilities (included within other accrued liabilities) 63 292
Long-term income tax liabilities (included within other long-term liabilities) 323 328
Total $ 291 $ 548