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Product Warranties (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Changes in accrued warranty costs [Roll Forward]        
Beginning balance $ 8.1 $ 8.3 $ 9.2 $ 9.3
Warranties recorded at time of sale 1.3 1.3 3.9 4.0
Adjustments to pre-existing warranties (0.4) 0.1 (1.3) (0.1)
Settlements (1.0) (1.5) (3.6) (4.6)
Effect of exchange rate changes 0.2 0.0 0.0 (0.4)
Ending balance $ 8.2 $ 8.2 $ 8.2 $ 8.2