v3.26.1
Pension Benefits (Tables)
 6 Months Ended
Jun. 30, 2026
Retirement Benefits [Abstract]  
Summary of net periodic benefit cost
Net periodic benefit costs for our significant defined benefit plans include the following components:
Three Months Ended June 30,Six Months Ended June 30,
U.S. Plans Non-U.S. Plan U.S. Plans Non-U.S. Plan
20262025202620252026202520262025
(Dollars in millions)
Service cost$— $— $2 $2 $— $— $4 $4 
Interest cost2 2 1 1 4 4 2 2 
Expected return on plan assets(3)(2)(2)(2)(5)(4)(4)(4)
Amortization of prior service (credit)— — (1)— — — (1)(1)
Total$(1)$— $— $1 $(1)$— $1 $1