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NET INCOME PER SHARE NET INCOME PER SHARE - COMPUTATIONS (Details) - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2019 | Apr. 30, 2018 | Apr. 30, 2019 | Apr. 30, 2018
Numerator: |  |  |  |
Net income | $ 153 | $ 64 | $ 267 | $ 158
Denominator: |  |  |  |
Basic weighted-average shares | 188 | 188 | 188 | 187
Potential common shares— stock options and other employee stock plans | 3 | 2 | 3 | 3
Diluted weighted-average shares | 191 | 190 | 191 | 190

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