Pension and Postretirement Benefits

6 Months Ended

Jun. 30, 2021

Postemployment Benefits [Abstract]

Pension and Postretirement Benefits

Pension and Postretirement Benefits

Net Periodic Pension Cost

The following table sets forth the components of the net periodic cost (income) associated with our pension plans and our postretirement benefit obligations:

	Pension Plans								Postretirement Benefit Obligations
	Three months ended June 30,				Six months ended June 30,				Three months ended June 30,				Six months ended June 30,
	2021		2020		2021		2020		2021		2020		2021		2020
Components of net periodic cost (income):
Service cost	$	1.3	$	0.5	$	2.6	$	0.9	$	—	$	—	$	—	$	—
Interest cost	6.9		10.4		13.7		20.9		—		—		—		—
Expected return on plan assets	(20.9)		(21.8)		(41.7)		(43.7)		—		—		—		—
Amortization of prior service cost (credit)	—		—		—		—		(0.1)		(0.1)		(0.2)		(0.2)
Amortization of actuarial loss (gain)	0.5		—		1.1		—		—		—		—		—
Net periodic cost (income)	$	(12.2)	$	(10.9)	$	(24.3)	$	(21.9)	$	(0.1)	$	(0.1)	$	(0.2)	$	(0.2)

As a result of the elimination of the one-month lag reporting for the subsidiaries outside of North America, we remeasured our pension plans in the international markets based on measurement dates as of December 31, 2019 and 2020. The remeasurement had no material impact on the financial results for the periods presented.