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STOCKHOLDERS' EQUITY -Accumulated other comprehensive income (Details) - USD ($) $ in Millions	Oct. 31, 2020	Oct. 31, 2019	Nov. 01, 2018	Oct. 31, 2018
Foreign currency translation, net of tax expense of $(6) and $(5) for 2020 and 2019, respectively	$ (194)	$ (204)	$ (214)	$ (214)
Foreign currency translation, tax	6	5
Unrealized losses (including prior service benefit) on defined benefit plans, net of tax benefit of $154 and $153 for 2020 and 2019, respectively	(317)	(306)
Unrealized losses on defined benefit plans, tax	154	153
Unrealized gains (losses) on derivative instruments, net of tax benefit of $6 and $3 for 2020 and 2019, respectively	(11)	(4)	6	7
Unrealized gains (losses) on derivative instruments, tax	6	3
Accumulated other comprehensive loss	$ (522)	$ (514)	$ (415)	$ (408)

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- Definition

Tax effect on the change in the balance sheet adjustment that results from the adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into reporting currency as of the balance sheet date.

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Tax effect on the change in the balance sheet adjustment that results from the unrealized gains (losses) on derivative instruments as of the balance sheet date.

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The tax effect of the total net gains (losses) and changes in benefit cost which haven't yet been recognized as components of periodic benefit costs, as of the balance sheet date.

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Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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