Business and Basis of Presentation (Other Balance Sheet and Income Statement Items) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Ownership percentage	100.00%
Term of original maturities, cash equivalents, up to and including	3 months
Shipping, warehousing and handling costs	$ 8.7	$ 7.7