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SUPPLEMENTAL FINANCIAL INFORMATION - Software, Equity Method Investment and Research and Development (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Oct. 31, 2016
Research and Development        
Research and development expense $ 98.2 $ 93.4 $ 89.7  
PragmatIC        
Equity Method Investment        
Interest of equity method investment       22.60%
Carrying value of equity method investment 6.7 9.1    
Total software        
Capitalized software costs        
Software amortization expense 20.2 29.3 $ 37.9  
Total software | Other assets        
Capitalized software costs        
Cost 452.4 428.9    
Accumulated amortization (316.9) (301.8)    
Software, net $ 135.5 $ 127.1