v3.25.2
Pension Benefits (Tables)
 6 Months Ended
Jun. 30, 2025
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
20252024202520242025202420252024
(Dollars in millions)
Service cost$— $— $2 $2 $— $— $4 $3 
Interest cost2 2 1 1 4 4 2 3 
Expected return on plan assets(2)(2)(2)(2)(4)(4)(4)(4)
Amortization of prior service (credit)— — — — — — (1)(1)
Total$— $— $1 $1 $— $— $1 $1