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General (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Nov. 30, 2016
New Accounting Guidance [Abstract]
Net periodic benefit cost	[1]	$ 0.8	$ 0.8	$ 1.6	$ 1.5
Luvata HTS [Member]
Business Acquisition [Line Items]
Acquired ownership interest by the entity						100.00%
ASU 2017-07 [Member] | Other Income and Expense [Member]
New Accounting Guidance [Abstract]
Net periodic benefit cost		$ 0.8	0.8	1.6	1.5
ASU 2017-07 [Member] | Cost of Sales [Member]
New Accounting Guidance [Abstract]
Net periodic benefit cost			(0.3)		(0.6)
ASU 2017-07 [Member] | SG&A [Member]
New Accounting Guidance [Abstract]
Net periodic benefit cost			$ (0.5)		$ (0.9)
ASU 2016-09 [Member]
New Accounting Guidance [Abstract]
Cumulative increase to deferred tax assets				0.4
Cumulative increase to equity				$ 0.4
[1] Represents net periodic benefit cost, exclusive of service cost, for the Company's pension and postretirement plans.

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- Definition

Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 35
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