Benefit Plans and Other Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2021

Benefit Plans and Other Postretirement Benefits

Schedule of components of net pension expense

	Pension Benefits
Three Months Ended September 30:	2021		2020
Service cost	$	1.9	$	1.9
Interest cost		2.8		4.2
Expected return on plan assets		(7.8)		(9.3)
Amortization of prior service cost		0.5		0.5
Amortization of net actuarial losses		6.2		6.3
Net pension expense	$	3.6	$	3.6
Nine Months Ended September 30:
Service cost	$	5.6	$	5.6
Interest cost		8.4		12.5
Expected return on plan assets		(23.4)		(27.8)
Amortization of prior service cost		1.5		1.6
Amortization of net actuarial losses		18.7		18.8
Net pension expense	$	10.8	$	10.7