Employee Benefit Plans (MEC) (Tables) (MidAmerican Energy Company [Member])

12 Months Ended

Dec. 31, 2013

MidAmerican Energy Company [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

Net periodic benefit cost for the plans of MidAmerican Energy and the aforementioned affiliates included the following components for the years ended December 31 (in millions):



	Pension									Other Postretirement
	2013			2012			2011			2013			2012			2011

Service cost	$	18		$	18		$	18		$	5		$	4		$	4
Interest cost	33			37			39			8			8			10
Expected return on plan assets	(45		)	(45		)	(43		)	(13		)	(13		)	(13		)
Net amortization	11			4			—			(3		)	(3		)	(2		)
Net periodic benefit cost (benefit)	$	17		$	14		$	14		$	(3	)	$	(4	)	$	(1	)

Schedule of Changes in Fair Value of Plan Assets [Table Text Block]

The following table is a reconciliation of the fair value of plan assets for the years ended December 31 (in millions):



	Pension						Other Postretirement
	2013			2012			2013			2012

Plan assets at fair value, beginning of year	$	643		$	555		$	226		$	213
Employer contributions	7			65			1			1
Participant contributions	—			—			1			2
Actual return on plan assets	142			74			40			25
Benefits paid	(70		)	(51		)	(12		)	(15		)
Plan assets at fair value, end of year	$	722		$	643		$	256		$	226

Schedule of Changes in Projected Benefit Obligations [Table Text Block]

The following table is a reconciliation of the benefit obligations for the years ended December 31 (in millions):



	Pension						Other Postretirement
	2013			2012			2013			2012

Benefit obligation, beginning of year	$	846		$	799		$	213		$	198
Service cost	18			18			5			4
Interest cost	33			37			8			8
Participant contributions	—			—			1			2
Actuarial (gain) loss	(59		)	43			20			16
Benefits paid	(70		)	(51		)	(12		)	(15		)
Benefit obligation, end of year	$	768		$	846		$	235		$	213
Accumulated benefit obligation, end of year	$	751		$	821

Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]

The funded status of the plans and the amounts recognized on the Balance Sheets as of December 31 are as follows (in millions):



	Pension						Other Postretirement
	2013			2012			2013		2012

Plan assets at fair value, end of year	$	722		$	643		$	256	$	226
Less - Benefit obligation, end of year	768			846			235		213
Funded status	$	(46	)	$	(203	)	$	21	$	13

Amounts recognized on the Balance Sheets:
Other assets	$	66		$	—		$	21	$	13
Other current liabilities	(8		)	(8		)	—		—
Other liabilities	(104		)	(195		)	—		—
Amounts recognized	$	(46	)	$	(203	)	$	21	$	13

Schedule of Net Periodic Benefit Costs Not Yet Recognized [Table Text Block]

The portion of the funded status of the plans not yet recognized in net periodic benefit cost as of December 31 is as follows (in millions):



	Pension					Other Postretirement
	2013			2012		2013			2012

Net (gain) loss	$	(44	)	$	121	$	41		$	51
Prior service cost (credit)	3			4		(47		)	(53		)
Total	$	(41	)	$	125	$	(6	)	$	(2	)

A reconciliation of the amounts not yet recognized as components of net periodic benefit cost for the years ended December 31, 2013 and 2012 is as follows (in millions):



	Regulatory Asset			Regulatory Liability			Receivables (Payables) with Affiliates			Total
Pension
Balance, December 31, 2011	$	99		$	—		$	16		$	115
Net loss arising during the year	14			—			—			14
Net amortization	(3		)	—			(1		)	(4		)
Total	11			—			(1		)	10
Balance, December 31, 2012	110			—			15			125
Net gain arising during the year	(91		)	(49		)	(15		)	(155		)
Net amortization	(3		)	(6		)	(2		)	(11		)
Total	(94		)	(55		)	(17		)	(166		)
Balance, December 31, 2013	$	16		$	(55	)	$	(2	)	$	(41	)



	Regulatory Asset			Regulatory Liability		Receivables (Payables) with Affiliates			Total
Other Postretirement
Balance, December 31, 2011	$	2		$	—	$	(12	)	$	(10	)
Net loss (gain) arising during the year	6			—		(2		)	4
Net amortization	3			—		1			4
Total	9			—		(1		)	8
Balance, December 31, 2012	11			—		(13		)	(2		)
Net gain arising during the year	(3		)	—		(4		)	(7		)
Net amortization	2			—		1			3
Total	(1		)	—		(3		)	(4		)
Balance, December 31, 2013	$	10		$	—	$	(16	)	$	(6	)

Schedule of Defined Benefit Plan, Amounts To Be Recognized In Following Year [Table Text Block]

The net loss and prior service cost (credit) that will be amortized in 2014 into net periodic benefit cost are estimated to be as follows (in millions):



	Net Loss		Prior Service Cost (Credit)			Total

Pension	$	1	$	—		$	1
Other postretirement	2		(5		)	(3		)
Total	$	3	$	(5	)	$	(2	)

Schedule of Assumptions Used [Table Text Block]

Assumptions used to determine benefit obligations and net periodic benefit cost were as follows:



	Pension						Other Postretirement
	2013		2012		2011		2013		2012		2011
Benefit obligations as of December 31:
Discount rate	4.75	%	4.00	%	4.75	%	4.50	%	3.75	%	4.75	%
Rate of compensation increase	3.00	%	3.00	%	3.50	%	N/A		N/A		N/A

Net periodic benefit cost for the years ended December 31:
Discount rate	4.00	%	4.75	%	5.50	%	3.75	%	4.75	%	5.50	%
Expected return on plan assets⁽¹⁾	7.50	%	7.50	%	7.50	%	7.25	%	7.50	%	7.50	%
Rate of compensation increase	3.00	%	3.50	%	3.50	%	N/A		N/A		N/A


(1)	Amounts reflected are pre-tax values. Assumed after-tax returns for a taxable, non-union other postretirement plan were 5.56% for 2013, and 5.75% for 2012 and 2011.



	2013		2012
Assumed healthcare cost trend rates as of December 31:
Healthcare cost trend rate assumed for next year	8.00	%	8.00	%
Rate that the cost trend rate gradually declines to	5.00	%	5.00	%
Year that the rate reaches the rate it is assumed to remain at	2019		2018

Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]

A one percentage-point change in assumed healthcare cost trend rates would have the following effects (in millions):



	One Percentage-Point
	Increase		Decrease
Increase (decrease) in:
Total service and interest cost	$	—	$	—
Other postretirement benefit obligation	5		(4		)

Schedule of Expected Benefit Payments [Table Text Block]

Net periodic benefit costs assigned to MidAmerican Energy affiliates are reimbursed currently in accordance with its intercompany administrative services agreement. The expected benefit payments to participants in MidAmerican Energy's pension and other postretirement benefit plans for 2014 through 2018 and for the five years thereafter are summarized below (in millions):



	Projected Benefit Payments
	Pension		Other Postretirement

2014	$	56	$	16
2015	56		17
2016	58		18
2017	60		20
2018	60		21
2019-2023	307		108

Schedule of Allocation of Plan Assets [Table Text Block]

The target allocations (percentage of plan assets) for MidAmerican Energy's pension and other postretirement benefit plan assets are as follows as of December 31, 2013:



	Pension	Other Postretirement
	%	%
Debt securities⁽¹⁾	20-40	25-45
Equity securities⁽¹⁾	60-80	50-80
Real estate funds	2-8	—
Other	0-5	0-5


(1)	For purposes of target allocation percentages and consistent with the plans' investment policy, investment funds are allocated based on the underlying investments in debt and equity securities.

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The following table presents the fair value of plan assets, by major category, for MidAmerican Energy's defined benefit pension plan (in millions):



	Input Levels for Fair Value Measurements⁽¹⁾
	Level 1		Level 2		Level 3		Total
As of December 31, 2013
Cash equivalents	$	—	$	10	$	—	$	10
Debt securities:
United States government obligations	10		—		—		10
Corporate obligations	—		30		—		30
Municipal obligations	—		5		—		5
Agency, asset and mortgage-backed obligations	—		31		—		31
Equity securities:
United States companies	163		—		—		163
International equity securities	52		—		—		52
Investment funds⁽²⁾	105		285		—		390
Real estate funds	—		—		31		31
Total	$	330	$	361	$	31	$	722

As of December 31, 2012
Cash equivalents	$	—	$	7	$	—	$	7
Debt securities:
United States government obligations	19		—		—		19
Corporate obligations	—		31		—		31
Municipal obligations	—		5		—		5
Agency, asset and mortgage-backed obligations	—		29		—		29
Equity securities:
United States companies	137		—		—		137
Investment funds⁽²⁾	101		288		—		389
Real estate funds	—		—		26		26
Total	$	257	$	360	$	26	$	643


(1)	Refer to Note 14 for additional discussion regarding the three levels of the fair value hierarchy.


(2)	Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 78% and 22%, respectively, for 2013 and 74% and 26%, respectively, for 2012. Additionally, these funds are invested in United States and international securities of approximately 80% and 20%, respectively, for 2013 and 77% and 23%, respectively, for 2012.

The following table presents the fair value of plan assets, by major category, for MidAmerican Energy's defined benefit other postretirement plans (in millions):



	Input Levels for Fair Value Measurements⁽¹⁾
	Level 1		Level 2		Level 3		Total
As of December 31, 2013
Cash equivalents	$	1	$	—	$	—	$	1
Debt securities:
United States government obligations	7		—		—		7
Corporate obligations	—		9		—		9
Municipal obligations	—		37		—		37
Agency, asset and mortgage-backed obligations	—		13		—		13
Equity securities:
United States companies	125		—		—		125
Investment funds⁽²⁾	64		—		—		64
Total	$	197	$	59	$	—	$	256

As of December 31, 2012
Cash equivalents	$	2	$	—	$	—	$	2
Debt securities:
United States government obligations	4		—		—		4
Corporate obligations	—		9		—		9
Municipal obligations	—		32		—		32
Agency, asset and mortgage-backed obligations	—		14		—		14
Equity securities:
United States companies	102		—		—		102
Investment funds⁽²⁾	63		—		—		63
Total	$	171	$	55	$	—	$	226


(1)	Refer to Note 14 for additional discussion regarding the three levels of the fair value hierarchy.


(2)	Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 86% and 14%, respectively, for 2013 and 86% and 14%, respectively, for 2012. Additionally, these funds are invested in United States and international securities of approximately 43% and 57%, respectively, for 2013 and 51% and 49%, respectively, for 2012.

The following table presents MidAmerican Energy's assets and liabilities recognized on the Balance Sheets and measured at fair value on a recurring basis (in millions):



	Input Levels for Fair Value Measurements
	Level 1			Level 2			Level 3			Other⁽¹⁾			Total
As of December 31, 2013:
Assets:
Commodity derivatives	$	3		$	16		$	6		$	(23	)	$	2
Money market mutual funds⁽²⁾	95			—			—			—			95
Debt securities:
United States government obligations	134			—			—			—			134
International government obligations	—			1			—			—			1
Corporate obligations	—			36			—			—			36
Municipal obligations	—			2			—			—			2
Agency, asset and mortgage-backed obligations	—			2			—			—			2
Auction rate securities	—			—			23			—			23
Equity securities:
United States companies	214			—			—			—			214
International companies	4			—			—			—			4
Investment funds	—			—			—			—			—
	$	450		$	57		$	29		$	(23	)	$	513

Liabilities - commodity derivatives	$	(1	)	$	(42	)	$	(9	)	$	23		$	(29	)

As of December 31, 2012:
Assets:
Commodity derivatives	$	1		$	22		$	7		$	(23	)	$	7
Money market mutual funds⁽²⁾	163			—			—			—			163
Debt securities:
United States government obligations	104			—			—			—			104
International government obligations	—			1			—			—			1
Corporate obligations	—			32			—			—			32
Municipal obligations	—			4			—			—			4
Agency, asset and mortgage-backed obligations	—			6			—			—			6
Auction rate securities	—			—			21			—			21
Equity securities:
United States companies	187			—			—			—			187
International companies	2			—			—			—			2
Investment funds	1			—			—			—			1
	$	458		$	65		$	28		$	(23	)	$	528

Liabilities - commodity derivatives	$	(10	)	$	(90	)	$	(7	)	$	30		$	(77	)


(1)	Represents netting under master netting arrangements and a net cash collateral receivable of $- million and $7 million as of December 31, 2013 and 2012, respectively.


(2)	Amounts are included in cash and cash equivalents and investments and nonregulated property, net on the Balance Sheets. The fair value of these money market mutual funds approximates cost.

Schedule of Level Three Defined Benefit Plan Assets Roll Forward [Table Text Block]

The following table reconciles the beginning and ending balances of MidAmerican Energy's pension plan assets measured at fair value using significant Level 3 inputs for the years ended December 31, (in millions):



	Real Estate Funds
	2013		2012		2011

Beginning balance	$	26	$	24	$	17
Actual return on plan assets still held at period end	5		2		4
Purchases and sales	—		—		3
Ending balance	$	31	$	26	$	24