v3.26.3
RETIREMENT PLANS
 9 Months Ended
Sep. 30, 2026
Retirement Benefits [Abstract]  
RETIREMENT PLANS RETIREMENT PLANS
Defined Benefit Pension Plans and Other Postretirement Benefit Plans

Eastman maintains defined benefit pension plans that provide eligible employees with retirement benefits. In addition, Eastman provides life insurance for eligible retirees hired prior to January 1, 2007. Company funding is provided for eligible Medicare retirees hired prior to January 1, 2007 with a health reimbursement arrangement. Costs recognized for these benefits are estimated amounts, which may change as actual costs for the year are determined.

Components of net periodic benefit (credit) cost were as follows:
Third Quarter
Pension PlansOther Postretirement Benefit Plans
2026202520262025
(Dollars in millions)U.S.Non-U.S.U.S.Non-U.S.
Service cost$4 $2 $5 $1 $— $— 
Interest cost15 7 18 7 3 6 
Expected return on assets(23)(8)(23)(8)(1)(1)
Amortization of:
Prior service credit, net— — — — (10)— 
Net periodic benefit (credit) cost$(4)$1 $— $— $(8)$5 
First Nine Months
Pension PlansOther Postretirement Benefit Plans
2026202520262025
(Dollars in millions)U.S.Non-U.S.U.S.Non-U.S.
Service cost$12 $6 $14 $5 $— $— 
Interest cost45 21 54 19 8 17 
Expected return on assets(68)(24)(68)(23)(3)(3)
Amortization of:
Prior service credit, net— — — — (29)— 
Net periodic benefit (credit) cost$(11)$3 $— $1 $(24)$14 
For additional information regarding retirement plans, see Note 11, "Retirement Plans", to the consolidated financial statements in Part II, Item 8 of the Company's 2025 Annual Report on Form 10-K.