Pension and Other Postretirement Employee Benefit Plans

3 Months Ended

Sep. 30, 2021

Postemployment Benefits [Abstract]

Pension and Other Postretirement Employee Benefit Plans

PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS

The following table details the components of net periodic cost of our company-sponsored pension and other postretirement employee benefit plans for the periods presented:

	Quarter Ended September 30,				Nine Months Ended September 30,
Pension Benefit Plans	2021		2020		2021		2020
Service cost	$	0.4	$	0.5	$	1.4	$	1.7
Interest cost	2.1		2.6		6.3		7.8
Expected return on plan assets	(2.6)		(3.8)		(7.9)		(11.3)
Amortization of actuarial loss	2.5		2.4		7.7		7.4
Net periodic cost	$	2.4	$	1.7	$	7.4	$	5.6

	Quarter Ended September 30,				Nine Months Ended September 30,
Other Postretirement Employee  Benefit Plans	2021		2020		2021		2020
Service cost	$	0.2	$	—	$	0.3	$	0.1
Interest cost	0.6		0.6		1.5		1.8
Amortization of actuarial loss	0.2		—		0.2		—
Net periodic cost	$	1.0	$	0.7	$	2.0	$	1.8

We record the service component of net periodic cost (benefit) as part of "Cost of sales" and "Selling, general, and administrative expenses," while the non-service components of net periodic cost (benefit) are recorded to "Other non-operating expense" on our Consolidated Statements of Operations. For the quarter and nine months ended September 30, 2021, we recorded $0.6 million and $1.5 million to "Cost of sales" and less than $0.1 million and $0.2 million to "Selling, general, and administrative expenses." For the quarter and nine months ended September 30, 2020, we recorded $0.3 million and $1.1 million to "Cost of sales" and $0.2 million and $0.7 million to "Selling, general, and administrative expenses."