XML 61 R52.htm IDEA: XBRL DOCUMENT v3.20.1
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