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WORKERS' COMPENSATION INSURANCE AND RESERVES - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 26, 2021 | Sep. 27, 2020 | Sep. 26, 2021 | Sep. 27, 2020 | Dec. 27, 2020
Workers' Compensation Deductible Limit [Line Items] |  |  |  |  |
Workers' compensation claim deductible limit |  |  | $ 2.0 |  |
Weighted average period for claim payments below deductible limit |  |  | 5 years 6 months |  |
Payments made against self-insured claims |  |  | $ 32.0 | $ 40.6 |
Weighted average period for claim payments and receivables above deductible limit |  |  | 17 years |  |
Workers' compensation reserve for excess claims | $ 60.6 |  | $ 60.6 |  | $ 54.0
Worker's compensation receivable for excess claims | 59.2 |  | 59.2 |  | $ 52.9
Workers compensation expense | $ 13.3 | $ 14.4 | $ 32.7 | $ 38.0 |
Below limit |  |  |  |  |
Workers' Compensation Deductible Limit [Line Items] |  |  |  |  |
Workers' compensation discount |  |  | 1.60% |  | 1.80%
Above Limit |  |  |  |  |
Workers' Compensation Deductible Limit [Line Items] |  |  |  |  |
Workers' compensation discount |  |  | 1.60% |  | 1.30%

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- Definition Estimated weighted average period in which claim payments are made and reimbursements from insurance carries are received for workers' compensation claims that are above the established deductible limit as of the balance sheet date. + References No definition available. + Details
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- Definition Estimated weighted average period in which claim payments are made for workers' compensation claims that are below the established deductible limit as of the balance sheet date. + References No definition available. + Details
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- Definition Amount of risk retained by the entity for workers' compensation claims, on a per occurrence basis, before the insurance arrangement begins to provide coverage. + References No definition available. + Details
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- Definition Worker's Compensation Claim Receivables + References No definition available. + Details
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- Definition [Line Items] for Workers' Compensation Deductible Limit + References No definition available. + Details
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- Definition Workers' compensation expense recognized during the period for claims reserves net of changes in discount in non monopolistic jurisdictions; premiums in monopolistic jurisdictions; insurance premiums; changes in the valuation allowance related to receivables from insurance companies; and other miscellaneous expenses. + References No definition available. + Details
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- Definition Amount, after effects of reinsurance, of payments to settle insured claims and pay costs incurred in the claims settlement process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116884095&loc=d3e14764-158437 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3536-108585 + Details
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- Definition Percent discount applied to worker's compensation reserve liability to reduce the reserve to present value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=116884095&loc=d3e14754-158437 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121643868&loc=d3e14931-158439 + Details
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