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RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS Defined Contribution (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Defined Contribution Plan Disclosure [Line Items]
Maximum employer matching contribution in the 401(k) plan (in hundredths)	6.00%
Maximum employee contribution to 401(k)	50.00%
401(k) Plan employer expense	$ 41	$ 39	$ 37
401(k) Additional company contribution
Defined Contribution Plan Disclosure [Line Items]
Transitional company contribution to employee 401(k)	4.00%
401(k) Additional company contribution | 3 Percent
Defined Contribution Plan Disclosure [Line Items]
Transitional company contribution to employee 401(k)	3.00%
401(k) Additional company contribution | 5 Percent
Defined Contribution Plan Disclosure [Line Items]
Transitional company contribution to employee 401(k)	5.00%

X

- Definition

Additional transitional company contribution to employee 401(k) plans for certain employees.

+ References

No definition available.

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X

- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

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- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

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