Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2022

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures

Net periodic benefit cost for the domestic pension and other postretirement benefit plans included the following components (in millions):

	Three-Month Periods
	Ended March 31,
	2022		2021
Pension:
Service cost	$	7	$	7
Interest cost	19		20
Expected return on plan assets	(27)		(33)
Settlement	2		—
Net amortization	4		6
Net periodic benefit cost	$	5	$	—
Other postretirement:
Service cost	$	2	$	2
Interest cost	5		5
Expected return on plan assets	(7)		(5)
Net amortization	—		(1)
Net periodic benefit cost	$	—	$	1

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

	Three-Month Periods
	Ended March 31,
	2022		2021
Service cost	$	4	$	4
Interest cost	10		8
Expected return on plan assets	(25)		(28)
Net amortization	6		14
Net periodic benefit credit	$	(5)	$	(2)

PAC

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures

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,
	2022		2021
Pension:
Service cost	$	—	$	—
Interest cost	7		7
Expected return on plan assets	(10)		(13)
Net amortization	4		5
Net periodic benefit cost (credit)	$	1	$	(1)
Other postretirement:
Service cost	$	—	$	—
Interest cost	2		2
Expected return on plan assets	(2)		(2)
Net amortization	—		—
Net periodic benefit cost (credit)	$	—	$	—

MEC

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures

Net periodic benefit cost for the plans of MidAmerican Energy and the aforementioned affiliates included the following components (in millions):

	Three-Month Periods
	Ended March 31,
	2022		2021
Pension:
Service cost	$	5	$	5
Interest cost	5		6
Expected return on plan assets	(7)		(9)
Settlement	2		—
Net periodic benefit cost	$	5	$	2
Other postretirement:
Service cost	$	2	$	2
Interest cost	2		2
Expected return on plan assets	(4)		(2)
Net amortization	—		(1)
Net periodic benefit cost	$	—	$	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,
	2022		2021
Qualified Pension Plan:
Other non-current assets	$	42	$	42
Non-Qualified Pension Plans:
Other current liabilities	(1)		(1)
Other long-term liabilities	(8)		(8)
Other Postretirement Plans:
Other non-current assets	8		8

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,
	2022		2021
Qualified Pension Plan:
Other non-current assets	$	63	$	62
Non-Qualified Pension Plans:
Other current liabilities	(1)		(1)
Other long-term liabilities	(7)		(7)
Other Postretirement Plans:
Other long-term liabilities	(8)		(10)