Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 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						Nine-Month Periods
	Ended September 30,						Ended September 30,
	2020			2019			2020			2019
Service cost	$	4		$	3		$	12		$	11
Interest cost	10			13			30			39
Expected return on plan assets	(26		)	(24		)	(76		)	(74		)
Settlement	—			21			—			21
Net amortization	11			9			32			27
Net periodic benefit (credit) cost	$	(1	)	$	22		$	(2	)	$	24

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						Nine-Month Periods
	Ended September 30,						Ended September 30,
	2020			2019			2020			2019
Pension:
Service cost	$	4		$	4		$	11		$	12
Interest cost	23			27			69			82
Expected return on plan assets	(35		)	(38		)	(105		)	(115		)
Net amortization	8			8			25			24
Net periodic benefit cost	$	—		$	1		$	—		$	3
Other postretirement:
Service cost	$	1		$	1		$	5		$	6
Interest cost	6			6			16			20
Expected return on plan assets	(9		)	(10		)	(25		)	(30		)
Net amortization	(1		)	—			(5		)	(3		)
Net periodic benefit credit	$	(3	)	$	(3	)	$	(9	)	$	(7	)

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						Nine-Month Periods
	Ended September 30,						Ended September 30,
	2020			2019			2020			2019
Pension:
Service cost	$	—		$	—		$	—		$	—
Interest cost	9			11			27			33
Expected return on plan assets	(14		)	(17		)	(42		)	(50		)
Net amortization	4			3			13			9
Net periodic benefit credit	$	(1	)	$	(3	)	$	(2	)	$	(8	)
Other postretirement:
Service cost	$	—		$	—		$	1		$	1
Interest cost	2			3			7			9
Expected return on plan assets	(3		)	(6		)	(10		)	(16		)
Net amortization	—			1			—			1
Net periodic benefit credit	$	(1	)	$	(2	)	$	(2	)	$	(5	)

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						Nine-Month Periods
	Ended September 30,						Ended September 30,
	2020			2019			2020			2019
Pension:
Service cost	$	2		$	2		$	4		$	5
Interest cost	7			7			19			22
Expected return on plan assets	(10		)	(10		)	(30		)	(31		)
Net amortization	—			—			1			—
Net periodic benefit credit	$	(1	)	$	(1	)	$	(6	)	$	(4	)
Other postretirement:
Service cost	$	1		$	1		$	3		$	4
Interest cost	2			2			5			7
Expected return on plan assets	(4		)	(3		)	(10		)	(9		)
Net amortization	(1		)	(1		)	(4		)	(3		)
Net periodic benefit credit	$	(2	)	$	(1	)	$	(6	)	$	(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
	September 30,		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
	September 30,		December 31,
	2020		2019
Qualified Pension Plan:
Other long-term liabilities	$	2	$	4
Non-Qualified Pension Plans:
Other current liabilities	1		1
Other long-term liabilities	7		8
Other Postretirement Plans:
Other long-term liabilities	7		7