Benefit Plans and Other Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2020

Benefit Plans and Other Postretirement Benefits

Schedule of components of net pension expense

	Pension Benefits
Three Months Ended September 30:	2020		2019
Service cost	$	1.9	$	2.0
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		6.3		4.6
Net pension expense	$	3.6	$	3.2
Nine Months Ended September 30:
Service cost	$	5.6	$	5.5
Interest cost		12.5		16.2
Expected return on plan assets		(27.8)		(27.8)
Amortization of prior service cost		1.6		1.3
Amortization of net actuarial losses		18.8		13.9
Net pension expense	$	10.7	$	9.1