Benefit Plans and Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2019

Benefit Plans and Other Postretirement Benefits

Schedule of components of net pension expense

	Pension Benefits
Three Months Ended March 31:	2019		2018
Service cost	$	1.8	$	1.9
Interest cost		5.4		4.9
Expected return on plan assets		(9.2)		(9.7)
Amortization of prior service cost		0.4		0.6
Amortization of net actuarial losses		4.6		5.9
Net pension expense	$	3.0	$	3.6