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Restructuring Facilities Restructuring (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
Sep. 30, 2013
Facility Charge [Member]
Dec. 31, 2012
Facility Charge [Member]
Restructuring Charges $ 4.3 $ 1.4 $ 5.4 $ 9.0    
Restructuring liability, ending balance         $ 0.1 $ 0.3