Postretirement Benefit Plans

3 Months Ended

Mar. 31, 2021

Postretirement Plan

Defined Benefit Plan Disclosure [Line Items]

Other Postretirement Benefit Plans

Note 15 - Other Postretirement Benefit Plans

The following table sets forth the net periodic benefit cost for the Company’s other postretirement benefit plans. The amounts for the three months ended March 31, 2021 are based on calculations prepared by the Company's actuaries and represent the Company’s best estimate of that period’s proportionate share of the amounts to be recorded for the year ending December 31, 2021.

	Three Months Ended March 31,
	2021		2020
Components of net periodic benefit credit:
Interest cost	$	0.4	$	0.5
Expected return on plan assets	—		(0.1)
Amortization of prior service credit	(2.5)		(2.4)
Net periodic benefit credit	$	(2.1)	$	(2.0)

In January 2021, the Company transferred the remaining $11.1 million in the existing Voluntary Employee Beneficiary Association ("VEBA") trust for certain retiree medical benefits to a second VEBA trust for the payment of certain active employees’ medical benefits. The Company utilized all of the assets in the second trust during the three months ended March 31, 2021.