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SEGMENT INFORMATION Reconciliation of Reportable Results (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2020 | Oct. 31, 2019 | Oct. 31, 2018
Reconcilitation between statement results and enterprise results [Abstract] |  |  |
Total reportable segment income from operations | $ 1,256 | $ 1,202 | $ 1,104
Amortization | (184) | (125) | (105)
Acquisition and integration costs | (41) | (48) | (23)
Transformational initiatives | (53) | (44) | (25)
Share-based Payment Arrangement, Accelerated Cost | (2) | 0 | 0
Asset impairment charges | 99 | 0 | 21
Business exit and divestiture costs | (2) | 0 | (9)
NASD Site costs | 0 | (12) | (8)
Special compliance costs | 0 | (2) | (4)
Other | (29) | (30) | (5)
Interest income | (8) | (36) | (38)
Interest Expense | (78) | (74) | (75)
Other income (expense), net | 66 | 16 | 79
Income before taxes | $ 842 | $ 919 | $ 946

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- Definition Amount of an item in the reconciliation of total profit or loss from reportable segments to the entity's consolidated income before income taxes, extraordinary items, discontinued operations. + References No definition available. + Details
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