Benefit Plans and Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2020

Benefit Plans and Other Postretirement Benefits

Schedule of components of net pension expense

	Pension Benefits
Three Months Ended March 31:	2020		2019
Service cost	$	2.0	$	1.8
Interest cost		4.2		5.4
Expected return on plan assets		(9.3)		(9.2)
Amortization of prior service cost		0.5		0.4
Amortization of net actuarial losses		6.2		4.6
Net pension expense	$	3.6	$	3.0