Segment Information (MEC) (Tables) (MidAmerican Energy Company [Member])

12 Months Ended

Dec. 31, 2013

MidAmerican Energy Company [Member]

Segment Reporting Information [Line Items]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

MidAmerican Energy has identified three reportable operating segments: regulated electric, regulated gas and nonregulated energy. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting gas owned by others through its distribution system. Pricing for regulated electric and regulated gas sales are established separately by regulatory agencies; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance. The nonregulated energy segment derives most of its revenue from nonregulated retail electric and gas activities. Common operating costs, interest income, interest expense and income tax expense are allocated to each segment based on certain factors, which primarily relate to the nature of the cost. Refer to Note 10 for a discussion of income tax method changes and related items affecting income tax (benefit) expense for the regulated electric and gas operating segments.

The following tables provide information on a reportable segment basis (in millions):

	Years Ended December 31,
	2013			2012			2011
Operating revenue:
Regulated electric	$	1,762		$	1,694		$	1,662
Regulated gas	824			659			769
Nonregulated energy	817			889			1,070
Total operating revenue	$	3,403		$	3,242		$	3,501
Depreciation and amortization:
Regulated electric	$	366		$	356		$	301
Regulated gas	37			36			35
Total depreciation and amortization	$	403		$	392		$	336
Operating income:
Regulated electric	$	255		$	270		$	294
Regulated gas	74			47			66
Nonregulated energy	27			53			69
Total operating income	$	356		$	370		$	429
Fixed charges:
Regulated electric	$	129		$	123		$	133
Regulated gas	15			15			18
Total fixed charges	$	144		$	138		$	151
Income tax (benefit) expense:
Regulated electric	$	(136	)	$	(129	)	$	(61	)
Regulated gas	23			7			16
Nonregulated energy	10			23			28
Total income tax (benefit) expense	$	(103	)	$	(99	)	$	(17	)
Earnings on common stock:
Regulated electric	$	292		$	297		$	243
Regulated gas	41			28			36
Nonregulated energy	16			29			39
Total earnings on common stock	$	349		$	354		$	318

	Years Ended December 31,
	2013		2012		2011
Utility construction expenditures:
Regulated electric	$	945	$	588	$	505
Regulated gas	81		57		60
Total utility construction expenditures	$	1,026	$	645	$	565
	As of December 31,
	2013		2012		2011
Total assets:
Regulated electric	$	10,532	$	9,898	$	9,016
Regulated gas	1,206		1,202		1,159
Nonregulated energy	131		132		135
Total assets	$	11,869	$	11,232	$	10,310