v3.26.1
Employee Benefit Plans (Tables)
 6 Months Ended
Jun. 30, 2026
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)2026202520262025
Defined benefit plans$10 $9 $21 $27 
Defined contribution plans19 17 41 38 
Multi-employer pension and postretirement plans44 42 83 81 

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)2026202520262025
Service cost$9 $9 $18 $17 
Interest cost10 8 19 16 
Expected return on plan assets(9)(8)(18)(17)
Recognized actuarial net loss1 — 1 1 
Total net periodic benefit cost$11 $9 $20 $17 
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)2026202520262025
Stock-based compensation expense (Share Based)$20 $23 $39 $44 
Less: future tax benefit(3)(2)(4)(4)
Stock-based compensation expense, net of tax$17 $21 $35 $40