v2.4.0.8
Stockholders' Equity and Accumulated Other Comprehensive Income (Loss) (Narrative) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 30 Months Ended 32 Months Ended 35 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Jan. 31, 2014
Mar. 31, 2014
Dec. 31, 2016
Stock Repurchase Program, Authorized Amount     $ 300.0   $ 300.0
Stock Repurchase Program, Period in Force     3 years    
Stock Repurchased and Retired During Period, Shares 1.5   12.9 14.4  
Stock Repurchased and Retired During Period, Value 44.4   257.1 301.5  
Stock Repurchase Program, Remaining Value Authorized to be Repurchased 255.6        
Accelerated Share Repurchases, Payment   $ 350.0      
Accelerated Share Repurchases, Shares Repurchased 2.0 9.4      
Accelerated Share Repurchases, Initial Price Paid Per Share   $ 29.69