v2.4.0.8
Income Taxes (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Apr. 30, 2013
Mar. 31, 2013
Income Taxes [Line Items]            
Effective income tax rates 31.20% 34.70% 34.40% 34.70%    
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate     35.00%      
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent (3.50%)          
State Income Tax Benefit Related to Remeasurement, Net $ 3.3          
Income Taxes Receivable           15.9
Operating Loss Carryforwards           0.6
Income tax refunds         $ 70.6 $ 75.1