Pension and Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Schedule of net periodic benefit cost

The components of net periodic benefit (income) expense costs recognized for the three months ended March 31, 2021 and 2020 were as follows:

	Pension Benefits				Postretirement Benefits
	Three Months Ended March 31,				Three Months Ended March 31,
	2021		2020		2021		2020
	(In millions)
Service costs	$	1.1	$	1.1	$	—	$	—
Interest costs	0.3		0.5		—		—
Expected return on plan assets	(3.1)		(2.9)		—		—
Recognized net actuarial loss	0.2		0.5		0.1		0.1
Net periodic benefit (income) expense	$	(1.5)	$	(0.8)	$	0.1	$	0.1