PENSIONS AND OTHER POSTRETIREMENT BENEFITS

3 Months Ended

Mar. 31, 2024

Postemployment Benefits [Abstract]

PENSIONS AND OTHER POSTRETIREMENT BENEFITS

NOTE 8 - PENSIONS AND OTHER POSTRETIREMENT BENEFITS

We offer defined benefit pension plans, defined contribution pension plans and OPEB plans to a significant portion of our employees and retirees. Benefits are also provided through multiemployer plans for certain union members.

The following are the components of defined benefit pension and OPEB costs (credits):

DEFINED BENEFIT PENSION COSTS (CREDITS)

	Three Months Ended March 31,
(In millions)	2024		2023
Service cost	$	7	$	8
Interest cost	55		59
Expected return on plan assets	(80)		(79)
Amortization:
Prior service costs	4		4
Net actuarial loss	—		1
Net periodic benefit credits	$	(14)	$	(7)

OPEB COSTS (CREDITS)

	Three Months Ended March 31,
(In millions)	2024		2023
Service cost	$	2	$	2
Interest cost	12		16
Expected return on plan assets	(11)		(11)
Termination benefits1	2		—
Amortization:
Prior service credits	(4)		(4)
Net actuarial gain	(38)		(36)
Net periodic benefit credits	$	(37)	$	(33)
1 The termination benefits relate to the announcement of the indefinite idle of our Weirton tinplate production plant.

Based on funding requirements, we made nominal defined benefit pension contributions for both the three months ended March 31, 2024 and 2023. Based on funding requirements, we made no contributions to our voluntary employee benefit association trust plans for both the three months ended March 31, 2024 and 2023.