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Restructuring And Impairments (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Dec. 31, 2011
Dec. 31, 2011
sqft
Restructuring And Impairments [Abstract]    
Headcount reduced due to restructuring activities, percentage of work force   50.00%
Expected annual savings due to workforce reduction   $ 50
Employee severance and benefit costs 2.2 5.4
Space to be vacated, Kalagenfurt, square feet   8,937
Space to be vacated, Nuremburg, square feet   3,300
Lease rentals discount rate   10.10%
Facility exit costs   0.1
Impairment charge 1.7  
Impairment charges of long-lived assets for which there is no remaining future economic benefit $ 0.2 $ 1.1