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LONG-TERM INCENTIVE COMPENSATION - Number of Awards, Weighted-average Grant-date Fair Value (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Performance Units (PUs)      
Number of awards      
Unvested at December 31, 2016 490,800    
Granted at target 164,400    
Adjustments for above-target performance 114,200    
Vested (231,500)    
Forfeited/cancelled (52,800)    
Unvested at December 30, 2017 485,100 490,800  
Fair value $ 11.2 $ 13.8 $ 12.2
Weighted-average grant-date fair value      
Weighted-average grant-date fair value unvested, beginning balance $ 58.47    
Weighted-average grant-date fair value, granted at target 82.15 $ 68.04 $ 51.37
Weighted-average grant-date fair value, Adjustment for above-target performance 48.59    
Weighted-average grant-date fair value, vested 48.26    
Weighted-average grant-date fair value, forfeited/Cancelled 66.08    
Weighted-average grant-date fair value unvested, ending balance $ 68.15 $ 58.47  
Market-leveraged stock units (MSUs)      
Number of awards      
Unvested at December 31, 2016 530,700    
Granted at target 123,700    
Adjustments for above-target performance 126,000    
Vested (342,000)    
Forfeited/cancelled (34,800)    
Unvested at December 30, 2017 403,600 530,700  
Fair value $ 19.3 $ 12.4 $ 9.8
Weighted-average grant-date fair value      
Weighted-average grant-date fair value unvested, beginning balance $ 62.09    
Weighted-average grant-date fair value, granted at target 91.40 $ 72.93 $ 56.46
Weighted-average grant-date fair value, Adjustment for above-target performance 55.24    
Weighted-average grant-date fair value, vested 56.33    
Weighted-average grant-date fair value, forfeited/Cancelled 71.15    
Weighted-average grant-date fair value unvested, ending balance $ 70.07 $ 62.09  
Restricted Stock Units (RSUs)      
Number of awards      
Unvested at December 31, 2016 117,700    
Granted at target 74,500    
Vested (47,600)    
Forfeited/cancelled (4,200)    
Unvested at December 30, 2017 140,400 117,700  
Fair value $ 2.7 $ 5.3 $ 8.4
Weighted-average grant-date fair value      
Weighted-average grant-date fair value unvested, beginning balance $ 58.87    
Weighted-average grant-date fair value, granted at target 82.77 $ 67.66 $ 53.29
Weighted-average grant-date fair value, vested 55.72    
Weighted-average grant-date fair value, forfeited/Cancelled 59.53    
Weighted-average grant-date fair value unvested, ending balance $ 72.62 $ 58.87