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DEBT Long Term Debt (Details) - USD ($) $ in Millions	Jan. 31, 2020	Oct. 31, 2019
Debt Instrument
Total debt	$ 1,788	$ 1,788
Senior Notes 2024
Debt Instrument
Total debt	597	597
Unamortized costs	3	3
Senior Notes 2027
Debt Instrument
Total debt	695	695
Unamortized costs	5	5
Senior Notes 2029 [Member]
Debt Instrument
Total debt	496	496
Unamortized costs	$ 4	$ 4

X

- Definition

Amount of short-term and long-term debt and lease obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
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