v3.26.1
Employee Benefit Plans (Tables)
 3 Months Ended
Mar. 31, 2026
Defined Benefit Plan Disclosure [Line Items]  
Schedule of Net Benefit Costs
Net periodic benefit cost (credit) for the domestic pension and other postretirement benefit plans included the following components (in millions):
Three-Month Periods
Ended March 31,
20262025
Pension:
Service cost$3 $3 
Interest cost25 26 
Expected return on plan assets(31)(30)
Net amortization2 2 
Net periodic benefit (credit) cost
$(1)$1 
Other postretirement:
Service cost$1 $1 
Interest cost7 7 
Expected return on plan assets(10)(9)
Net amortization(1)(1)
Net periodic benefit credit
$(3)$(2)
Net periodic benefit cost (credit) for the United Kingdom pension plan included the following components (in millions):
Three-Month Periods
Ended March 31,
20262025
Service cost$1 $1 
Interest cost16 14 
Expected return on plan assets(21)(20)
Net amortization8 8 
Net periodic benefit cost
$4 $3 
PAC  
Defined Benefit Plan Disclosure [Line Items]  
Schedule of Net Benefit Costs
Net periodic benefit cost (credit) for the pension and other postretirement benefit plans included the following components (in millions):
Three-Month Periods
Ended March 31,
20262025
Pension:
Interest cost$9 $9 
Expected return on plan assets(11)(11)
Net amortization2 2 
Net periodic benefit cost (credit)
$— $— 
Other postretirement:
Service cost$— $— 
Interest cost3 3 
Expected return on plan assets(3)(3)
Net amortization(1)(1)
Net periodic benefit credit
$(1)$(1)
MEC  
Defined Benefit Plan Disclosure [Line Items]  
Schedule of Net Benefit Costs
Net periodic benefit cost (credit) for the plans of MidAmerican Energy and the aforementioned affiliates included the following components (in millions):
Three-Month Periods
Ended March 31,
20262025
Pension:
Service cost$2 $2 
Interest cost7 8 
Expected return on plan assets(8)(8)
Net periodic benefit cost
$1 $2 
Other postretirement:
Service cost$1 $1 
Interest cost3 3 
Expected return on plan assets(5)(5)
Net periodic benefit credit
$(1)$(1)
NPC  
Defined Benefit Plan Disclosure [Line Items]  
Schedule of Amounts Recognized in Balance Sheet
Amounts receivable from (payable to) NV Energy are included on the Consolidated Balance Sheets and consist of the following (in millions):
As of
March 31,December 31,
20262025
Qualified Pension Plan:
Other assets
$46 $46 
Non-Qualified Pension Plans:
Other current liabilities(1)(1)
Other long-term liabilities(5)(5)
Other Postretirement Plans:
Other assets
17 16 
SPPC  
Defined Benefit Plan Disclosure [Line Items]  
Schedule of Amounts Recognized in Balance Sheet
Amounts receivable from (payable to) NV Energy are included on the Consolidated Balance Sheets and consist of the following (in millions):
As of
March 31,December 31,
20262025
Qualified Pension Plan:
Other assets
$74 $72 
Non-Qualified Pension Plans:
Other current liabilities(1)(1)
Other long-term liabilities(5)(5)
Other Postretirement Plans:
Other assets
2 2