Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2022

Retirement Benefits [Abstract]

Schedule of Cost of Pension Plans

The cost of our pension plans are as follows:

	Three months ended September 30,				Nine months ended September 30,
(in thousands)	2022		2021		2022		2021
Service cost for benefits earned	$	12,560	$	13,260	$	37,681	$	39,780
Interest cost on benefits obligation	9,941		9,206		29,823		27,618
Expected return on plan assets	(13,639)		(12,569)		(40,917)		(37,706)
Prior service cost amortization	361		357		1,082		1,071
Net actuarial loss amortization	1,830		4,027		5,490		12,080
Pension plan cost (1)	$	11,053	$	14,281	$	33,159	$	42,843

(1)The components of pension plan costs other than the service cost component are included in the line item "Other income (expense)" in the Statements of Operations after reimbursements from the Exchange and its subsidiaries.