Segment Information (MEC)

6 Months Ended

Jun. 30, 2015

MidAmerican Energy Company [Member]

Segment Reporting Information [Line Items]

Segment Reporting Disclosure [Text Block]

(9) Segment Information

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,
	2015		2014			2015		2014
Operating revenue:
Regulated electric	$	461	$	426		$	887	$	876
Regulated gas	110		136			405		647
Nonregulated energy	222		207			447		471
Total operating revenue	$	793	$	769		$	1,739	$	1,994
Depreciation and amortization:
Regulated electric	$	89	$	76		$	179	$	151
Regulated gas	10		9			20		19
Total depreciation and amortization	$	99	$	85		$	199	$	170
Operating income:
Regulated electric	$	108	$	48		$	161	$	131
Regulated gas	4		(3		)	51		55
Nonregulated energy	10		6			16		18
Total operating income	$	122	$	51		$	228	$	204

	As of
	June 30, 2015		December 31, 2014
Total assets:
Regulated electric	$	12,220	$	11,859
Regulated gas	1,165		1,231
Nonregulated energy	174		167
Total assets	$	13,559	$	13,257