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Fair Value Measurements (Tables)
9 Months Ended
Dec. 31, 2012
Fair Value Disclosures [Abstract]  
Details of Impairment of Long-Lived Assets Held and Used by Asset
The following table summarizes the fair value remeasurements recorded during the three and nine months ended December 31, 2012 (in millions):

 
Three and Nine Months Ended
 
December 31, 2012

Carrying value (pre-asset impairment)
$
0.9

Asset impairment loss (included in income from operations)
0.5

Remaining net carrying value
$
0.4