Pensions (Tables)

6 Months Ended

Jun. 30, 2021

Retirement Benefits [Abstract]

Schedule of Components of Net Pension Income

The following table presents the components of the Company’s net pension income:

(dollars in millions)	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Service cost	$	0.4	$	0.3	$	0.8	$	0.7
Interest cost	3.6		5.8		7.2		11.5
Expected return on plan assets	(12.0)		(13.0)		(24.0)		(26.0)
Amortization of unrecognized loss	5.2		5.0		10.4		9.9
Amortization of prior service cost	(0.1)		(0.1)		(0.2)		(0.2)
Defined benefit plan income	$	(2.9)	$	(2.0)	$	(5.8)	$	(4.1)