Goodwill and Other Intangible Assets (Useful Lives) (Details)	12 Months Ended
	Mar. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	6 years 1 day
Patents | Minimum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	10 years
Patents | Maximum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	17 years
Licenses | Minimum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	7 years
Licenses | Maximum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	13 years
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	5 years
Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	8 years
Developed technology
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	8 years
Non-competition agreements
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	5 years