Benefit Plans

6 Months Ended

Jun. 30, 2021

Retirement Benefits [Abstract]

Benefit Plans

Benefit Plans

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

	Three months ended				Six months ended
In millions	June 30, 2021		June 30, 2020		June 30, 2021		June 30, 2020
Service cost	$	0.7	$	0.8	$	1.4	$	1.6
Interest cost	0.5		0.7		1.0		1.4
Expected return on plan assets	(0.1)		(0.2)		(0.2)		(0.4)
Net periodic benefit expense	$	1.1	$	1.3	$	2.2	$	2.6

Components of net periodic benefit expense for our other post-retirement plans for the three and six months ended June 30, 2021 and 2020 were not material