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

3 Months Ended

Mar. 31, 2014

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
	Ended March 31,
	2014		2013
Operating revenue:
Regulated electric	$	450	$	415
Regulated gas	511		315
Nonregulated energy	264		190
Total operating revenue	$	1,225	$	920
Depreciation and amortization:
Regulated electric	$	75	$	98
Regulated gas	10		9
Total depreciation and amortization	$	85	$	107
Operating income:
Regulated electric	$	83	$	50
Regulated gas	58		45
Nonregulated energy	12		11
Total operating income	$	153	$	106

	As of
	March 31, 2014		December 31, 2013
Total assets:
Regulated electric	$	10,622	$	10,532
Regulated gas	1,226		1,206
Nonregulated energy	164		131
Total assets	$	12,012	$	11,869