Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2020

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures

Foreign Operations

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

	Three-Month Periods
	Ended March 31,
	2020			2019
Service cost	$	4		$	4
Interest cost	10			13
Expected return on plan assets	(25		)	(25		)
Net amortization	10			9
Net periodic benefit (credit) cost	$	(1	)	$	1

Domestic Operations

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,
	2020			2019
Pension:
Service cost	$	3		$	4
Interest cost	23			27
Expected return on plan assets	(35		)	(38		)
Net amortization	9			9
Net periodic benefit cost	$	—		$	2
Other postretirement:
Service cost	$	1		$	2
Interest cost	6			6
Expected return on plan assets	(9		)	(10		)
Net amortization	(1		)	(2		)
Net periodic benefit credit	$	(3	)	$	(4	)

PacifiCorp [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures

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

	Three-Month Periods
	Ended March 31,
	2020			2019
Pension:
Service cost	$	—		$	—
Interest cost	9			11
Expected return on plan assets	(14		)	(17		)
Net amortization	5			3
Net periodic benefit cost (credit)	$	—		$	(3	)
Other postretirement:
Service cost	$	—		$	—
Interest cost	3			3
Expected return on plan assets	(4		)	(5		)
Net amortization	—			—
Net periodic benefit credit	$	(1	)	$	(2	)

MidAmerican Energy Company [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures

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

	Three-Month Periods
	Ended March 31,
	2020			2019
Pension:
Service cost	$	1		$	2
Interest cost	6			7
Expected return on plan assets	(10		)	(10		)
Net periodic benefit credit	$	(3	)	$	(1	)
Other postretirement:
Service cost	$	1		$	1
Interest cost	2			2
Expected return on plan assets	(3		)	(3		)
Net amortization	(1		)	(1		)
Net periodic benefit credit	$	(1	)	$	(1	)

Nevada Power Company [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Amounts Recognized in Balance Sheet

Amounts payable to NV Energy are included on the Consolidated Balance Sheets and consist of the following (in millions):

	As of
	March 31,		December 31,
	2020		2019
Qualified Pension Plan:
Other long-term liabilities	$	18	$	18
Non-Qualified Pension Plans:
Other current liabilities	1		1
Other long-term liabilities	9		9
Other Postretirement Plans:
Other long-term liabilities	2		2

Sierra Pacific Power Company [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Amounts Recognized in Balance Sheet

Amounts payable to NV Energy are included on the Balance Sheets and consist of the following (in millions):

	As of
	March 31,		December 31,
	2020		2019
Qualified Pension Plan:
Other long-term liabilities	$	3	$	4
Non-Qualified Pension Plans:
Other current liabilities	1		1
Other long-term liabilities	8		8
Other Postretirement Plans:
Other long-term liabilities	7		7