Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2019

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures

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						Six-Month Periods
	Ended June 30,						Ended June 30,
	2019			2018			2019			2018
Pension:
Service cost	$	4		$	5		$	8		$	10
Interest cost	28			26			55			52
Expected return on plan assets	(39		)	(41		)	(77		)	(82		)
Net amortization	7			7			16			15
Net periodic benefit cost (credit)	$	—		$	(3	)	$	2		$	(5	)
Other postretirement:
Service cost	$	3		$	3		$	5		$	5
Interest cost	8			6			14			12
Expected return on plan assets	(10		)	(12		)	(20		)	(22		)
Net amortization	(1		)	(3		)	(3		)	(6		)
Net periodic benefit credit	$	—		$	(6	)	$	(4	)	$	(11	)

Foreign Operations

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

	Three-Month Periods						Six-Month Periods
	Ended June 30,						Ended June 30,
	2019			2018			2019			2018
Service cost	$	4		$	5		$	8		$	10
Interest cost	13			14			26			28
Expected return on plan assets	(25		)	(26		)	(50		)	(53		)
Settlement	—			24			—			24
Net amortization	9			14			18			29
Net periodic benefit cost	$	1		$	31		$	2		$	38

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						Six-Month Periods
	Ended June 30,						Ended June 30,
	2019			2018			2019		2018
Pension:
Service cost	$	—		$	—		—		—
Interest cost	11			10			22		21
Expected return on plan assets	(16		)	(18		)	(33	)	(36	)
Net amortization	3			4			6		7
Net periodic benefit credit	$	(2	)	$	(4	)	(5	)	(8	)
Other postretirement:
Service cost	$	1		$	1		1		1
Interest cost	3			3			6		6
Expected return on plan assets	(5		)	(6		)	(10	)	(11	)
Net amortization	—			(2		)	—		(3	)
Net periodic benefit credit	$	(1	)	$	(4	)	(3	)	(7	)

MidAmerican Energy Company [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures

Net periodic benefit (credit) cost 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,
	2019			2018			2019			2018
Pension:
Service cost	$	1		$	2		$	3		$	4
Interest cost	8			7			15			14
Expected return on plan assets	(11		)	(11		)	(21		)	(22		)
Net amortization	—			—			—			1
Net periodic benefit credit	$	(2	)	$	(2	)	$	(3	)	$	(3	)
Other postretirement:
Service cost	$	2		$	2		$	3		$	3
Interest cost	3			2			5			4
Expected return on plan assets	(3		)	(4		)	(6		)	(7		)
Net amortization	(1		)	(1		)	(2		)	(2		)
Net periodic benefit cost (credit)	$	1		$	(1	)	$	—		$	(2	)

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
	June 30,		December 31,
	2019		2018
Qualified Pension Plan:
Other long-term liabilities	$	26	$	26
Non-Qualified Pension Plans:
Other current liabilities	1		1
Other long-term liabilities	9		9
Other Postretirement Plans:
Other long-term liabilities	1		1

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
	June 30,		December 31,
	2019		2018
Qualified Pension Plan:
Other long-term liabilities	$	18	$	19
Non-Qualified Pension Plans:
Other current liabilities	1		1
Other long-term liabilities	7		7
Other Postretirement Plans:
Other long-term liabilities	13		13