Indebtedness (Details) - USD ($) $ in Millions		9 Months Ended
		Dec. 31, 2017	Mar. 31, 2017
Long-term Debt and Capital Lease Obligations [Abstract]
Total debt		$ 438.1	$ 444.2
Less: current portion		(37.9)	(31.8)
Less: unamortized debt issuance costs		(5.7)	(6.7)
Total long-term debt		394.5	405.7
Credit Facility [Abstract]
Short-term debt		53.5	73.4
Available for future borrowings		168.8
Long-term debt, fair value		159.0	170.0
Domestic Revolving Credit Facility [Member]
Credit Facility [Abstract]
Letters of credit outstanding		3.9
Available for future borrowings		148.4
Foreign Credit Agreements [Member]
Credit Facility [Abstract]
Short-term debt		30.8	33.0
Available for future borrowings		20.4
Term Loans [Member]
Long-term Debt and Capital Lease Obligations [Abstract]
Total debt		$ 270.4	268.9
Fiscal year of maturity		Mar. 31, 2022
Multi Currency Revolving Credit Facility [Member]
Credit Facility [Abstract]
Short-term debt		$ 22.7	40.4
Maximum borrowing capacity		$ 175.0
Expiration date		Nov. 30, 2021
6.8% Senior Notes [Member]
Long-term Debt and Capital Lease Obligations [Abstract]
Total debt		$ 105.0	117.0
Interest rate percentage		6.80%
Fiscal year of maturity		Mar. 31, 2021
5.8% Senior Notes [Member]
Long-term Debt and Capital Lease Obligations [Abstract]
Total debt		$ 50.0	50.0
Interest rate percentage		5.80%
Fiscal year of maturity		Mar. 31, 2027
Other [Member]
Long-term Debt and Capital Lease Obligations [Abstract]
Total debt	[1]	$ 12.7	$ 8.3
Fiscal year of maturity	[1]	Mar. 31, 2032

[1] Other long-term debt includes borrowings by foreign subsidiaries, capital lease obligations and other financing-type obligations.