v2.4.0.8
Summary of Significant Accounting Policies , Basis of Presentation (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2013
Dec. 31, 2009
Accounting Policies [Abstract]      
Out-of-period Adjustment Relating to Retired Treasury Stock $ 3.0    
Repurchase and retirement of common stock (in shares)   2,100,000 1,409,264