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Stockholders' Equity and Accumulated Other Comprehensive Income (Loss) (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2012
Jun. 30, 2012
Jun. 30, 2012
Aug. 31, 2014
Stock Repurchase Program, Authorized Amount $ 300.0      
Stock Repurchase Program, Period in Force       3
Stock Repurchased and Retired During Period, Shares   2.3 5.7  
Stock Repurchased and Retired During Period, Value   $ 41.3 $ 87.4