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LEASES - Weighted Average Remaining Lease Term and Discount Rates (Details)	Dec. 26, 2020	Dec. 28, 2019
Weighted-average remaining lease term (in years)
Operating lease	8 years 6 months	8 years 2 months 12 days
Finance lease	12 years 4 months 24 days	13 years
Weighted-average discount rate
Operating lease	4.50%	4.40%
Finance lease	4.10%	4.60%

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Leases, Weighted Average Discount Rate [Abstract]

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Weighted Average Remaining Lease Term [Abstract]

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- Definition

Weighted average discount rate for finance lease calculated at point in time.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Weighted average discount rate for operating lease calculated at point in time.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 55
-Paragraph 53
-URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971

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