Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2021

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

Components of net periodic benefit expense for our pension plans for the three and nine months ended September 30, 2021 and 2020 were as follows:

	Three months ended				Nine months ended
In millions	September 30, 2021		September 30, 2020		September 30, 2021		September 30, 2020
Service cost	$	0.7	$	0.8	$	2.1	$	2.4
Interest cost	0.5		0.7		1.5		2.1
Expected return on plan assets	(0.1)		(0.2)		(0.3)		(0.6)
Net periodic benefit expense	$	1.1	$	1.3	$	3.3	$	3.9