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PENSION AND OTHER POSTRETIREMENT BENEFITS - Reconciliation For Assets Measure At Fair Value Using Level 3 (Details) - Int'l - USD ($)
$ in Millions
12 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Reconciliation of Level 3 assets    
Impact of changes in foreign currency exchange rates $ 71.1 $ (51.1)
Significant Other Unobservable Inputs (Level 3) | Insurance contracts    
Reconciliation of Level 3 assets    
Balance at the beginning of the year 30.5  
Net realized and unrealized gain 0.7  
Purchases 2.8  
Settlements (1.4)  
Impact of changes in foreign currency exchange rates 3.1  
Balance at the end of the year $ 35.7 $ 30.5