Pension and Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2021

Retirement Benefits [Abstract]

Schedule of net periodic benefit cost

The components of net periodic benefit (income) expense costs recognized for the three and nine months ended September 30, 2021 and 2020 were as follows:

	Pension Benefits								Postretirement Benefits
	Three Months Ended September 30,				Nine Months Ended September 30,				Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020		2021		2020		2021		2020
	(In millions)
Service costs	$	1.0	$	1.0	$	3.2	$	3.2	$	—	$	—	$	—	$	—
Interest costs	0.3		0.5		1.0		1.6		—		—		0.1		0.1
Expected return on plan assets	(3.0)		(2.9)		(9.2)		(8.8)		—		—		—		—
Recognized net actuarial loss	0.2		0.4		0.6		1.4		0.1		0.1		0.3		0.2
Net periodic benefit (income) expense	$	(1.5)	$	(1.0)	$	(4.4)	$	(2.6)	$	0.1	$	0.1	$	0.4	$	0.3