v3.26.1
Benefit Plans
 3 Months Ended
Mar. 31, 2026
Retirement Benefits [Abstract]  
Benefit Plans BENEFIT PLANS
 
The following table presents the net periodic benefit cost of the Pension Plans combined:
 Three Months Ended
 March 31,
 20262025
 (In Thousands)
Components of net periodic benefit cost:
  
Service cost$1,011 $1,065 
Interest cost5,958 6,891 
Expected return on plan assets(7,338)(7,758)
Amortization of prior service cost480 585 
Amortization of actuarial loss990 1,257 
Net periodic benefit cost
$1,101 $2,040 

The components of net periodic benefit cost other than service cost are included in “Other income / (expense), net” in the Condensed Consolidated Statements of Operations.
In addition, AES Indiana provides postretirement health care benefits to certain active or retired employees and the spouses of certain active or retired employees. These postretirement health care benefits and the related unfunded obligation were not material to the Financial Statements in the periods covered by this report.