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Earnings Per Share (Antidilutive Shares) (Details)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Earnings Per Share [Abstract]  
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 0.3us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount