Pension and Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2019

Retirement Benefits [Abstract]

Components of net periodic benefit cost

The components of net periodic benefit (income) costs recognized during interim periods were as follows:

	Pension Benefits						Postretirement Benefits
	Three Months Ended March 31,						Three Months Ended March 31,
	2019			2018			2019			2018
	(In millions)
Service costs	$	0.9		$	1.0		$	—		$	—
Interest costs	0.7			0.5			0.1			0.1
Expected return on plan assets	(2.7		)	(2.9		)	—			—
Recognized net actuarial loss	0.6			0.1			—			—
Net periodic benefit (income) costs	$	(0.5	)	$	(1.3	)	$	0.1		$	0.1
Weighted average:
Discount rate for PBO	4.11		%	3.52		%	4.06		%	3.32		%
Discount rate for interest cost	3.72		%	3.10		%	3.72		%	2.89		%
Discount rate for service cost	4.10		%	3.57		%	4.34		%	3.70		%
Expected return on plan assets	8.25		%	8.25		%