Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation (Details)

v2.4.0.6
Share-Based Compensation (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2012
years
Apr. 02, 2011
years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) 13.1  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares) 2.1  
Stock Appreciation Rights (SARs) [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 (in shares) 0.4 0.9
Allocated Share-based Compensation Expense $ 1.8 $ 2.1
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) $ 12.70 $ 11.14
Risk-free interest rate 1.10% 2.80%
Dividend yield 0.20% 0.20%
Volatility factor 58.30% 52.30%
Weighted average expected life, minimum (in years) 5.2 5.2
Weighted average expected life, maximum (in years) 6.7 6.7
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 (in shares) 0.2 0.2
Allocated Share-based Compensation Expense 1.4 0.5
Employee Service Share-based Compensation, Non-vested Awards, Total Compensation Cost Not Yet Recognized 8.3  
Employee Service Share-based Compensation, Non-vested Awards, Total Compensation Cost Not Yet Recognized (in years) 1.6  
Performance Awards [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Allocated Share-based Compensation Expense 0.4  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) $ 26.81  
Risk-free interest rate 0.40%  
Dividend yield 0.20%  
Volatility factor 67.90%  
Weighted average expected life (in years) 2.9  
Employee Service Share-based Compensation, Non-vested Awards, Total Compensation Cost Not Yet Recognized $ 2.5  
Employee Service Share-based Compensation, Non-vested Awards, Total Compensation Cost Not Yet Recognized (in years) 1.4  
Director [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Percentage of premium paid out to directors in deferred company common stock 20.00%