Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation (Details)

v3.8.0.1
Share-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Sep. 30, 2017
Oct. 01, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of Shares Available for Grant (in Shares) 5,400,000   5,400,000  
Percentage of Premium Paid Out in Deferred Company Common Stock     20.00%  
Non-Vested Stock Awards [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period 0 0 200,000 300,000
Allocated Share-Based Compensation Expense $ 2.9 $ 2.9 $ 8.5 $ 7.4
Unrecognized Compensation Cost 10.8   $ 10.8  
Unrecognized Compensation Cost, Period for Recognition     1 year 3 months 18 days  
Performance Shares [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated Share-Based Compensation Expense 2.8 $ 1.4 $ 5.9 $ 4.4
Unrecognized Compensation Cost $ 4.7   $ 4.7  
Unrecognized Compensation Cost, Period for Recognition     1 year 1 month 6 days  
Performance Shares [Member] | Certain Senior Executives [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period     100,000 100,000
Weighted Average Price at Grant Date (in Dollars per Share) $ 64.82 $ 38.54 $ 64.82 $ 38.54
Risk-Free Interest Rate     1.50% 0.80%
Dividend Yield     1.10% 1.00%
Volatility Factor     38.30% 40.80%
Expected Life of Award     2 years 10 months 24 days 2 years 10 months 24 days
Performance Shares [Member] | Certain Officers and Certain Senior Managers [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period     26,300 37,430
Weighted Average Price at Grant Date (in Dollars per Share) $ 58.77 $ 37.76 $ 58.77 $ 37.76