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Supplemental Disclosures (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Supplemental Disclosures [Abstract]        
Effective tax rate 44.50% 25.50% 36.10% 45.50%
Reduction to income tax expense due to settlements $ 13.4     $ 61.0
Income tax refunds     $ 1.4 $ 4.1