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FAIR VALUE MEASUREMENTS Fair Value measurements (Investments) (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 28, 2020 | Mar. 30, 2019 | Dec. 28, 2019
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Gain (Loss) on Investments | $ (3.0) | $ 1.7 |
Fair Value, Inputs, Level 1 [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Investments | $ 16.7 | $ 17.3 | $ 19.7

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