v3.26.1
Employee Benefit Plans (Tables)
 6 Months Ended
Jun. 30, 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 PeriodsSix-Month Periods
Ended June 30,Ended June 30,
2026202520262025
Pension:
Service cost$3 $3 $6 $6 
Interest cost25 28 50 54 
Expected return on plan assets(29)(31)(60)(61)
Net amortization3 2 5 4 
Net periodic benefit cost$2 $2 $1 $3 
Other postretirement:
Service cost$1 $1 $2 $2 
Interest cost6 7 13 14 
Expected return on plan assets(8)(9)(18)(18)
Net amortization(1)(2)(2)(3)
Net periodic benefit credit
$(2)$(3)$(5)$(5)
Net periodic benefit cost for the United Kingdom pension plan included the following components (in millions):
Three-Month PeriodsSix-Month Periods
Ended June 30,Ended June 30,
2026202520262025
Service cost$2 $1 $3 $2 
Interest cost16 15 32 29 
Expected return on plan assets(20)(21)(41)(41)
Net amortization10 8 18 16 
Net periodic benefit cost
$8 $3 $12 $6 
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 PeriodsSix-Month Periods
Ended June 30,Ended June 30,
2026202520262025
Pension:
Interest cost$8 $10 $17 $19 
Expected return on plan assets(10)(12)(21)(23)
Net amortization3 2 5 4 
Net periodic benefit cost$1 $— $1 $— 
Other postretirement:
Service cost$— $— $— $— 
Interest cost2 2 5 5 
Expected return on plan assets(2)(3)(5)(6)
Net amortization— — (1)(1)
Net periodic benefit credit
$— $(1)$(1)$(2)
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 PeriodsSix-Month Periods
Ended June 30,Ended June 30,
2026202520262025
Pension:
Service cost$2 $2 $4 $4 
Interest cost8 8 15 16 
Expected return on plan assets(8)(8)(16)(16)
Settlement— — — — 
Net amortization— — — — 
Net periodic benefit cost
$2 $2 $3 $4 
Other postretirement:
Service cost$1 $1 $2 $2 
Interest cost3 3 6 6 
Expected return on plan assets(5)(4)(10)(9)
Net amortization(1)(1)(1)(1)
Net periodic benefit credit
$(2)$(1)$(3)$(2)
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
June 30,December 31,
20262025
Qualified Pension Plan:
Other assets
$47 $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
June 30,December 31,
20262025
Qualified Pension Plan:
Other assets
$75 $72 
Non-Qualified Pension Plans:
Other current liabilities(1)(1)
Other long-term liabilities(5)(5)
Other Postretirement Plans:
Other assets
5 2