Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2019

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

Components of net periodic benefit cost for our pension plans for the three and nine months ended September 30, 2019 and 2018 were as follows:

	Three months ended						Nine months ended
In millions	September 30, 2019			September 30, 2018			September 30, 2019			September 30, 2018
Service cost	$	0.7		$	1.0		$	1.8		$	3.1
Interest cost	0.9			3.0			6.3			9.0
Expected return on plan assets	(0.2		)	(2.2		)	(3.6		)	(6.7		)
Plan settlement loss (gain)	0.4			2.2			(11.8		)	2.2
Net periodic benefit expense (income)	$	1.8		$	4.0		$	(7.3	)	$	7.6