Segment Information (LLC) (MidAmerican Funding, LLC and Subsidiaries [Domain])

3 Months Ended

Mar. 31, 2013

MidAmerican Funding, LLC and Subsidiaries [Domain]

Segment Reporting Information [Line Items]

Segment Reporting Disclosure [Text Block]

(10) Segment Information

MidAmerican Funding 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. "Other" in the tables below consists of the nonregulated subsidiaries of MidAmerican Funding not engaged in the energy business and parent company interest expense. The following tables provide information on a reportable segment basis (in millions):

	Three-Month Periods
	Ended March 31,
	2013		2012
Operating revenue:
Regulated electric	$	415	$	380
Regulated gas	315		263
Nonregulated energy	190		231
Other	1		—
Total operating revenue	$	921	$	874
Depreciation and amortization:
Regulated electric	$	98	$	84
Regulated gas	9		9
Total depreciation and amortization	$	107	$	93
Operating income:
Regulated electric	$	50	$	48
Regulated gas	45		30
Nonregulated energy	11		14
Other	—		(1		)
Total operating income	$	106	$	91

	As of
	March 31, 2013		December 31, 2012
Total assets(1):
Regulated electric	$	11,028	$	11,089
Regulated gas	1,185		1,280
Nonregulated energy	113		132
Other	24		29
Total assets	$	12,350	$	12,530

(1) Total assets by reportable segment reflect the assignment of goodwill to applicable reporting units.