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Pension Plans and Post Retirement Benefits (Pension Plans with Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets) (Details) - USD ($)
$ in Millions
Jan. 03, 2016
Dec. 28, 2014
Compensation and Retirement Disclosure [Abstract]    
Projected benefit obligation $ 97.6 $ 105.0
Accumulated benefit obligation 94.7 102.9
Fair value of plan assets $ 43.8 $ 47.7