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SEGMENT INFORMATION - Reconciliation of Reportable Results (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Reconciliation of Operating Profit from Segments to Consolidated
Total reportable segment's income from operations	$ 297	$ 265
Transformational initiatives	(5)	(4)
Amortization of intangible assets related to business combinations	(28)	(25)
Acquisition and integration costs	(10)	(3)
NASD site costs	(2)	(2)
Special compliance costs	0	(1)
Other	(2)	(1)
Interest income	10	9
Interest expense	(18)	(20)
Other income (expense), net	6	15
Income before taxes, as reported	$ 248	$ 233

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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.

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The net result for the period of deducting segment operating expenses from segment operating revenues.

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The charge against earnings in the period, comprised of costs associated with restructuring activities not otherwise specified in the taxonomy that are not part of a specific plan as required by GAAP.

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The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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