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LONG-TERM DEBT - Senior Notes (Details) - USD ($) $ in Millions		12 Months Ended
	Oct. 22, 2020	Jul. 31, 2021	Oct. 31, 2020
6.750% Senior Notes Due 2029
Debt Instrument [Line Items]
Debt instrument, face amount			$ 500
Term Loan Facility, Term B Tranche | Secured Debt
Debt Instrument [Line Items]
Prepayments	$ 500	$ 500
Senior Notes | 6.750% Senior Notes Due 2029
Debt Instrument [Line Items]
Debt instrument, face amount	$ 500
Debt instrument, interest rate, stated percentage	6.75%
Financing costs		$ 9

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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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