v3.25.2
Employee Benefit Plans (Tables)
 6 Months Ended
Jun. 30, 2025
Retirement Benefits [Abstract]  
Schedule of Defined Benefit Plans Disclosures Contributions to our plans were as follows:
 Quarter Ended June 30,Six Months Ended June 30,
(dollars in millions)2025202420252024
Defined benefit plans$9 $12 $27 $24 
Defined contribution plans17 16 38 36 
Multi-employer pension and postretirement plans42 42 81 82 

The following table illustrates the components of net periodic benefit cost for the Company's defined benefit pension plans:

 Quarter Ended June 30,Six Months Ended June 30,
(dollars in millions)2025202420252024
Service cost$9 $8 $17 $16 
Interest cost8 7 16 15 
Expected return on plan assets(8)(8)(17)(16)
Recognized actuarial net loss— — 1 — 
Total net periodic benefit cost$9 $7 $17 $15 
Schedule of Stock-based Compensation Expense and Resulting Tax Benefits
Stock-based compensation expense and the resulting tax benefits were as follows:

Quarter Ended June 30,Six Months Ended June 30,
(dollars in millions)2025202420252024
Stock-based compensation expense (Share Based)$23 $20 $44 $36 
Less: future tax benefit(2)(2)(4)(4)
Stock-based compensation expense, net of tax$21 $18 $40 $32