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PENSIONS AND OTHER POSTRETIREMENT BENEFITS
 9 Months Ended
Sep. 30, 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
September 30,		Nine Months Ended
September 30,
(In millions)2024202320242023
Service cost$7 $8 $21 $24 
Interest cost54 59 163 176 
Expected return on plan assets(80)(79)(240)(236)
Amortization:
Prior service costs5 5 13 13 
Net actuarial loss— — — 2 
Net periodic benefit credits$(14)$(7)$(43)$(21)
OPEB COSTS (CREDITS)
Three Months Ended
September 30,		Nine Months Ended
September 30,
(In millions)2024202320242023
Service cost$2 $2 $6 $7 
Interest cost13 15 38 47 
Expected return on plan assets(11)(10)(32)(31)
Termination benefits1
— — 2 — 
Amortization:
Prior service credits(4)(4)(12)(12)
Net actuarial gain(39)(36)(116)(109)
Net periodic benefit credits$(39)$(33)$(114)$(98)
1 The termination benefits relate to the announcement of the indefinite idle of our Weirton tinplate production plant.
Based on funding requirements, we made $75 million and $91 million of defined benefit pension contributions for the three and nine months ended September 30, 2024, respectively. Based on funding requirements, we made nominal defined benefit pension contributions for the three and nine months ended September 30, 2023. Based on funding requirements, we made no contributions to our voluntary employee benefit association trust plans for both the three and nine months ended September 30, 2024 and 2023.