Restructuring Activities (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 2.6	$ 0.8
Restructuring and repositioning expenses [Abstract]
Employee severance and related benefits	1.9	0.3
Other restructuring and repositioning expenses	0.7	0.5
Total	2.6	0.8
Changes in accrued severance [Roll Forward]
Beginning Balance	9.9	19.4
Additions	1.9	0.3
Payments	(2.4)	(1.9)
Effect of exchange rate changes	0.4	(0.1)
Ending Balance	9.8	$ 17.7
Assets Held-for-Sale [Abstract]
Assets held for sale	8.5		$ 3.2
Europe Segment [Member]
Assets Held-for-Sale [Abstract]
Amount reclassified from property, plant and equipment to assets held for sale	4.6
Washington Plant Closure [Member] | Americas [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 1.8