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

6 Months Ended

Jun. 30, 2014

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 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.

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

	Three-Month Periods					Six-Month Periods
	Ended June 30,					Ended June 30,
	2014			2013		2014		2013
Operating revenue:
Regulated electric	$	426		$	411	$	876	$	826
Regulated gas	136			142		647		457
Nonregulated energy	207			204		471		394
Total operating revenue	$	769		$	757	$	1,994	$	1,677
Depreciation and amortization:
Regulated electric	$	76		$	95	$	151	$	193
Regulated gas	9			9		19		18
Total depreciation and amortization	$	85		$	104	$	170	$	211
Operating income:
Regulated electric	$	48		$	31	$	131	$	81
Regulated gas	(3		)	4		55		49
Nonregulated energy	6			8		18		19
Total operating income	$	51		$	43	$	204	$	149

	As of
	June 30, 2014		December 31, 2013
Total assets:
Regulated electric	$	11,392	$	10,532
Regulated gas	1,133		1,206
Nonregulated energy	162		131
Total assets	$	12,687	$	11,869