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RETIREMENT PLANS (Tables)
6 Months Ended
Jun. 30, 2025
Retirement Benefits [Abstract]  
Components of net periodic benefit cost
Components of net periodic benefit (credit) cost were as follows:
Second Quarter
 Pension PlansOther Postretirement Benefit Plans
2025202420252024
(Dollars in millions)U.S.Non-U.S.U.S.Non-U.S.
Service cost$$$$$— $— 
Interest cost18 19 
Expected return on assets(23)(8)(24)(7)(1)(2)
Amortization of:
Prior service credit, net— — — — — (2)
Net periodic benefit (credit) cost$— $— $$$$
First Six Months
Pension PlansOther Postretirement Benefit Plans
2025202420252024
(Dollars in millions)U.S.Non-U.S.U.S.Non-U.S.
Service cost$$$11 $$— $— 
Interest cost36 12 37 12 11 12 
Expected return on assets(45)(15)(48)(14)(2)(3)
Amortization of:
Prior service credit, net— — — — — (5)
Net periodic benefit (credit) cost$— $$— $$$