Pension Plans (Tables)

3 Months Ended

Jun. 30, 2018

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
	June 30,
	2018		2017
Service costs	$	0.4	$	0.4
Interest costs	0.3		0.2
Amortization of actuarial loss	0.3		0.2
Net pension period cost	$	1.0	$	0.8