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DEBT Long Term and Short Term Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Debt Instrument [Line Items]
Repayments of Debt	$ 7	$ 500	$ 300
Long-term Debt	1,789	1,788
Long-term Debt, Excluding Current Maturities	1,789	$ 1,788
3.00% Senior Notes 2029
Debt Instrument [Line Items]
Debt Issuance Costs, Gross	$ 4
Issuance date of debt	Oct. 31, 2019
Debt Instrument, Face Amount	$ 500
Percentage Of Face Amount Of Debt Instrument Issued	99.914%
Maturity date	Oct. 30, 2029
Debt Instrument, Interest Rate, Stated Percentage	3.00%
Debt Instrument, Frequency of Periodic Payment	semi-annually
4.55% Senior Notes 2024
Debt Instrument [Line Items]
Debt Issuance Costs, Gross	$ 5
Issuance date of debt	Oct. 31, 2014
Debt Instrument, Face Amount	$ 600
Percentage Of Face Amount Of Debt Instrument Issued	99.966%
Maturity date	Oct. 30, 2024
Debt Instrument, Interest Rate, Stated Percentage	4.55%
Debt Instrument, Frequency of Periodic Payment	semi-annually
4.60% Senior Notes 2027
Debt Instrument [Line Items]
Debt Issuance Costs, Gross	$ 6
Issuance date of debt	Apr. 30, 2017
Debt Instrument, Face Amount	$ 700
Percentage Of Face Amount Of Debt Instrument Issued	99.873%
Maturity date	Apr. 06, 2027
Debt Instrument, Interest Rate, Stated Percentage	4.60%
Debt Instrument, Frequency of Periodic Payment	semi-annually

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Proceeds obtained expressed as a percentage of debt instrument face value.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Date the debt instrument was issued, in CCYY-MM-DD format.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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