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

12 Months Ended

Dec. 31, 2014

MidAmerican Energy Company [Member]

Segment Reporting Information [Line Items]

Segment Reporting Disclosure [Text Block]

(19) Segment Information

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,
	2014			2013			2012
Operating revenue:
Regulated electric	$	1,817		$	1,762		$	1,694
Regulated gas	996			824			659
Nonregulated energy	927			817			889
Total operating revenue	$	3,740		$	3,403		$	3,242
Depreciation and amortization:
Regulated electric	$	312		$	366		$	356
Regulated gas	39			37			36
Total depreciation and amortization	$	351		$	403		$	392
Operating income:
Regulated electric	$	319		$	255		$	270
Regulated gas	75			74			47
Nonregulated energy	28			27			53
Total operating income	$	422		$	356		$	370
Fixed charges:
Regulated electric	$	141		$	129		$	123
Regulated gas	17			15			15
Total fixed charges	$	158		$	144		$	138
Income tax (benefit) expense:
Regulated electric	$	(138	)	$	(136	)	$	(129	)
Regulated gas	22			23			7
Nonregulated energy	12			10			23
Total income tax (benefit) expense	$	(104	)	$	(103	)	$	(99	)
Earnings on common stock:
Regulated electric	$	361		$	292		$	297
Regulated gas	40			41			28
Nonregulated energy	16			16			29
Total earnings on common stock	$	417		$	349		$	354

	Years Ended December 31,
	2014		2013		2012
Utility construction expenditures:
Regulated electric	$	1,429	$	945	$	588
Regulated gas	97		81		57
Total utility construction expenditures	$	1,526	$	1,026	$	645
	As of December 31,
	2014		2013		2012
Total assets:
Regulated electric	$	11,859	$	10,532	$	9,898
Regulated gas	1,231		1,206		1,202
Nonregulated energy	167		131		132
Total assets	$	13,257	$	11,869	$	11,232