Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2023

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				Six-Month Periods
	Ended June 30,				Ended June 30,
	2023		2022		2023		2022
Pension:
Service cost	$	5	$	6	$	9	$	13
Interest cost	27		19		55		38
Expected return on plan assets	(31)		(27)		(62)		(54)
Settlement	—		—		(5)		2
Net amortization	3		5		7		9
Net periodic benefit cost	$	4	$	3	$	4	$	8
Other postretirement:
Service cost	$	2	$	4	$	3	$	6
Interest cost	7		5		14		10
Expected return on plan assets	(10)		(7)		(18)		(14)
Net amortization	—		(1)		(1)		(1)
Net periodic benefit (credit) cost	$	(1)	$	1	$	(2)	$	1

Net periodic benefit cost (credit) for the United Kingdom pension plan included the following components (in millions):

	Three-Month Periods				Six-Month Periods
	Ended June 30,				Ended June 30,
	2023		2022		2023		2022
Service cost	$	1	$	3	$	3	$	7
Interest cost	14		9		28		19
Expected return on plan assets	(21)		(23)		(40)		(48)
Net amortization	7		6		13		12
Net periodic benefit cost (credit)	$	1	$	(5)	$	4	$	(10)

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				Six-Month Periods
	Ended June 30,				Ended June 30,
	2023		2022		2023		2022
Pension:
Interest cost	$	9	$	7	$	19	$	14
Expected return on plan assets	(12)		(11)		(24)		(21)
Net amortization	3		4		6		8
Net periodic benefit cost	$	—	$	—	$	1	$	1
Other postretirement:
Service cost	$	1	$	1	$	1	$	1
Interest cost	2		2		5		4
Expected return on plan assets	(4)		(3)		(7)		(5)
Net amortization	—		—		(1)		—
Net periodic benefit credit	$	(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 Periods				Six-Month Periods
	Ended June 30,				Ended June 30,
	2023		2022		2023		2022
Pension:
Service cost	$	3	$	4	$	6	$	9
Interest cost	8		5		16		10
Expected return on plan assets	(8)		(7)		(16)		(14)
Settlement	—		—		(5)		2
Net amortization	—		1		—		1
Net periodic benefit cost (credit)	$	3	$	3	$	1	$	8
Other postretirement:
Service cost	$	1	$	2	$	2	$	4
Interest cost	3		2		6		4
Expected return on plan assets	(4)		(3)		(8)		(7)
Net amortization	—		(1)		—		(1)
Net periodic benefit cost (credit)	$	—	$	—	$	—	$	—

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,
	2023		2022
Qualified Pension Plan:
Other non-current assets	$	26	$	27
Non-Qualified Pension Plans:
Other current liabilities	(1)		(1)
Other long-term liabilities	(6)		(6)
Other Postretirement Plans:
Other non-current assets	7		7

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,
	2023		2022
Qualified Pension Plan:
Other non-current assets	$	44	$	43
Non-Qualified Pension Plans:
Other current liabilities	(1)		(1)
Other long-term liabilities	(5)		(5)
Other Postretirement Plans:
Other long-term liabilities	—		(2)