STOCK-BASED COMPENSATION - Valuation Assumptions (Details) - shares	3 Months Ended
Dec. 27, 2019	Dec. 28, 2018
Value of options granted:
Number of options granted (in shares)	0	0

Gross number of share options (or share units) granted during the period.

No definition available.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration