OTHER FINANCIAL INFORMATION (Percentage Distribution Between Major Classes of Inventory) (Details)	6 Months Ended	12 Months Ended
Jun. 27, 2020	Dec. 28, 2019
Inventory [Line Items]
Percentage of inventory cost using the LIFO method	51.00%	53.00%
Inventory Concentration Risk \| Inventories \| Raw Material and Work in Process
Inventory [Line Items]
Percentage of total Inventory	50.00%	48.00%
Inventory Concentration Risk \| Inventories \| Finished Goods and Purchased Parts
Inventory [Line Items]
Percentage of total Inventory	50.00%	52.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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