Quarterly report pursuant to Section 13 or 15(d)

Pension and Other Postretirement Benefits (Details)

v3.7.0.1
Pension and Other Postretirement Benefits (Details) - USD ($)
$ in Millions
3 Months Ended
Apr. 01, 2017
Apr. 02, 2016
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Contributions by Employer for Nonqualified Pension Plan $ 1.2 $ 0.9
Defined Benefit Plan, Contributions by Employer for Qualified Pension Plans 35.0 35.0
Pension Benefits [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Interest Cost 7.1 8.9
Expected Return on Plan Assets (8.4) (9.6)
Amortization of Prior Service Credits 0.0 0.0
Amortization of Net Actuarial Losses 3.6 4.4
Net Pension and Other Benefit Costs 2.3 3.7
Other Postretirement Benefits [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Interest Cost 0.3 0.3
Expected Return on Plan Assets 0.0 0.0
Amortization of Prior Service Credits (0.2) (0.2)
Amortization of Net Actuarial Losses 0.0 0.0
Net Pension and Other Benefit Costs $ 0.1 $ 0.1