Pension and Postretirement Plans (Tables)

3 Months Ended

Mar. 31, 2020

Compensation And Retirement Disclosure [Abstract]

Schedule of Pension and Postretirement Costs (Benefits)

For the three months ended March 31, 2020 and 2019, pension and postretirement costs (benefits) were as follows:

	Three Months Ended March 31,
	2020			2019			2020			2019
(dollars in millions)	Pension Benefits						Postretirement and Other Benefits
Service cost	$	-		$	-		$	0.1		$	0.2
Other components of pension and postretirement benefit plans expense:
Interest cost on projected benefit obligation		4.8			6.0			0.9			1.2
Expected return on plan assets		(7.3	)		(7.8	)		-			-
Amortization of:
Prior service benefit		-			-			(0.6	)		(0.6	)
Actuarial loss		4.5			3.4			0.2			0.4
Total amortization		4.5			3.4			(0.4	)		(0.2	)
Pension / postretirement costs	$	2.0		$	1.6		$	0.6		$	1.2