Pension and Other Postretirement Employee Benefit Plans - (Tables)

6 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

Components of Net Periodic Cost of Pension and Other 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:

	Three Months Ended June 30,				Six Months Ended June 30,
Pension Benefit Plans	2020		2019		2020		2019
Service cost	$	0.6	$	0.7	$	1.2	$	1.2
Interest cost	2.6		3.1		5.2		6.2
Expected return on plan assets	(3.7)		(4.1)		(7.5)		(8.3)
Amortization of actuarial loss (gain)	2.5		1.8		5.0		3.7
Net periodic cost	$	2.0	$	1.4	$	3.9	$	2.9

	Three Months Ended June 30,				Six Months Ended June 30,
Other Postretirement Employee  Benefit Plans	2020		2019		2020		2019
Service cost	$	—	$	—	$	—	$	—
Interest cost	$	0.6	$	0.8	$	1.1	$	1.4
Amortization of actuarial loss (gain)	—		—		—		(0.2)
Net periodic cost	$	0.6	$	0.8	$	1.2	$	1.2

Defined Contribution Plan Disclosures

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 three and six months ended June 30, 2020, we recorded $0.4 million and $0.7 million to "Cost of sales" and $0.2 million and $0.5 million to "Selling, general, and administrative expenses". For the three and six months ended June 30, 2019, we recorded $0.4 million and $0.8 million to "Cost of sales" and $0.3 million and $0.5 million to "Selling, general, and administrative expenses".