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Product Warranties (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Changes in the warranty liability [Roll Forward]    
Beginning balance $ 14.0 $ 12.6
Accruals for warranties issued 1.6 1.4
Accruals related to pre-existing warranties 0.6 2.5
Settlements (2.4) (4.0)
Effect of exchange rate changes 0.1 (0.2)
Ending balance $ 13.9 $ 12.3