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SEGMENT INFORMATION Reconciliation of Reportable Results (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2019 | Oct. 31, 2018 | Oct. 31, 2017
Reconcilitation between statement results and enterprise results [Abstract] |  |  |
Total reportable segment income from operations | $ 1,202 | $ 1,104 | $ 973
Amortization | (125) | (105) | (117)
Acquisition and integration costs | (48) | (23) | (30)
Transformational initiatives | (44) | (25) | (12)
Asset impairment charges | 0 | 21 | 0
Business exit and divestiture costs (primarily our NMR business) | 0 | (9) | 0
NASD Site costs | (12) | (8) | 0
Special compliance costs | (2) | (4) | 0
Other | (30) | (5) | (7)
Interest income | 36 | 38 | 22
Interest Expense | (74) | (75) | (79)
Other income (expense), net | 16 | 79 | 53
Income before taxes | $ 919 | $ 946 | $ 803

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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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