Pension Plans - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Expected periodic pension cost in current fiscal year			$ 3.2
Benefits paid	$ 0.2	$ 0.3	0.7	$ 0.6
Defined benefit plan expected contributions in current fiscal year	$ 1.0		$ 1.0
FRANCE | Minimum
Defined Benefit Plan Disclosure [Line Items]
Termination benefits, salary period (in months)			1 month
FRANCE | Maximum
Defined Benefit Plan Disclosure [Line Items]
Termination benefits, salary period (in months)			5 months