Segment Information (Details) - USD ($) $ in Millions		3 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Mar. 31, 2016
Segment Reporting Information [Abstract]
Net sales		$ 347.2	$ 346.1
Gross profit		$ 62.0	$ 57.0
Gross profit (% of sales)		17.80%	16.50%
Operating income		$ 15.1	$ 11.6
Total assets		925.4		$ 920.9
Operating Segments [Member]
Segment Reporting Information [Abstract]
Net sales		350.8	350.9
Gross profit		$ 64.6	$ 56.7
Gross profit (% of sales)		18.40%	16.20%
Operating income		$ 26.7	$ 17.5
Operating Segments [Member] | Americas [Member]
Segment Reporting Information [Abstract]
Net sales		140.0	159.1
Gross profit		$ 25.1	$ 26.7
Gross profit (% of sales)		17.90%	16.80%
Operating income		$ 9.3	$ 9.3
Total assets		274.5		267.2
Operating Segments [Member] | Europe [Member]
Segment Reporting Information [Abstract]
Net sales		146.0	131.2
Gross profit		$ 25.1	$ 15.1
Gross profit (% of sales)		17.20%	11.50%
Operating income		$ 15.0	$ 5.7
Total assets		306.7		301.9
Operating Segments [Member] | Asia [Member]
Segment Reporting Information [Abstract]
Net sales		24.9	19.3
Gross profit		$ 4.4	$ 3.5
Gross profit (% of sales)		17.60%	18.10%
Operating income		$ 1.5	$ 0.4
Total assets		103.6		104.0
Operating Segments [Member] | Building HVAC [Member]
Segment Reporting Information [Abstract]
Net sales		39.9	41.3
Gross profit		$ 10.0	$ 11.4
Gross profit (% of sales)		25.10%	27.70%
Operating income		$ 0.9	$ 2.1
Total assets		99.2		99.0
Corporate and Eliminations [Member]
Segment Reporting Information [Abstract]
Net sales		(3.6)	(4.8)
Gross profit	[1]	$ (2.6)	$ 0.3
Gross profit (% of sales)	[1]	0.00%	0.00%
Operating income	[1]	$ (11.6)	$ (5.9)
Total assets		141.4		$ 148.8
Corporate and Eliminations [Member] | Cost of Sales [Member]
Segment Reporting Information [Abstract]
Cost reduction initiatives expenses		4.2
Corporate and Eliminations [Member] | Selling, General and Administrative Expenses [Member]
Segment Reporting Information [Abstract]
Expenses recorded at corporate for procurement initiatives and business development		$ 4.2

[1] During the three months ended June 30, 2016, the Company recorded expenses totaling $4.2 million at Corporate for professional services related to its procurement cost-reduction initiatives (within cost of sales) and business development activities (within SG&A).