Pension Plans (Tables)

6 Months Ended

Sep. 30, 2019

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The aggregate net pension expense relating to these plans is as follows (in millions):

	Three Months Ended September 30,				Six Months Ended September 30,
	2019		2018		2019		2018
Service costs	$	0.4	$	0.4	$	0.8	$	0.8
Interest costs	0.2		0.2		0.4		0.5
Amortization of actuarial loss	0.2		0.2		0.4		0.5
Net pension period cost	$	0.8	$	0.8	$	1.6	$	1.8