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Defined Benefit Plans (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended 0 Months Ended
Jun. 29, 2014
Jun. 30, 2013
Jun. 29, 2014
Jun. 30, 2013
May 15, 2014
Minimum
May 15, 2014
Maximum
Employee benefit plans            
Term for settlement of liabilities to plan participants under SERP         12 months 24 months
Components of net periodic benefit cost            
Service cost - administrative costs $ 0.1 $ 0.1 $ 0.3 $ 0.2    
Interest costs on benefits obligation 1.5 1.4 3.0 2.8    
Expected return on assets (1.5) (1.7) (3.0) (3.4)    
Net actuarial loss amortization 0.2 0.2 0.5 0.4    
Net periodic benefit cost 0.3   0.8      
Information related to the Company's pension funds cash flow            
Employer contributions     0.4 0.4    
Expected employer contributions in remainder of fiscal year     $ 0.4