v3.26.1
Postretirement benefit plans (Tables)
 6 Months Ended
Jun. 30, 2026
Retirement Benefits [Abstract]  
Schedule of Expense Related to Defined Benefit and Retiree Health Care Benefit Plans
Expenses related to defined benefit and retiree health care benefit plans are as follows:
U.S. Defined BenefitU.S. Retiree Health CareNon-U.S. Defined Benefit
For Three Months Ended June 30,202620252026202520262025
Service cost$1 $2 $— $1 $4 $3 
Interest cost5 7 3 3 17 15 
Expected return on plan assets(4)(6)(2)(3)(20)(17)
Recognized net actuarial losses (gains)1 2 — (1)(1)1 
Amortization of prior service cost (credit)— — — — 1 — 
Net periodic benefit costs (credits)3 5 1 — 1 2 
Settlement losses (gains)2 3 — — (1)— 
Total, including other postretirement losses (gains)$5 $8 $1 $— $— $2 
U.S. Defined BenefitU.S. Retiree Health CareNon-U.S. Defined Benefit
For Six Months Ended June 30,202620252026202520262025
Service cost$3 $4 $— $1 $8 $7 
Interest cost11 13 6 6 33 29 
Expected return on plan assets(10)(10)(5)(6)(39)(35)
Recognized net actuarial losses (gains)2 4 — (1)(2)2 
Amortization of prior service cost (credit)— — — — 2 — 
Net periodic benefit costs (credits)6 11 1 — 2 3 
Settlement losses (gains)2 3 — — (1)— 
Total, including other postretirement losses (gains)$8 $14 $1 $— $1 $3