Consolidated Statements of Operations (LLC) (MidAmerican Funding, LLC and Subsidiaries [Domain], USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
MidAmerican Funding, LLC and Subsidiaries [Domain]
Operating revenue:
Regulated electric	$ 411	$ 404	$ 826	$ 784
Regulated gas	142	91	457	354
Nonregulated	206	214	397	445
Total operating revenue	759	709	1,680	1,583
Regulated operating costs and expenses:
Cost of fuel, energy and capacity	114	101	237	209
Cost of gas sold	88	45	312	231
Other operating expenses	111	100	217	202
Maintenance	70	52	115	98
Depreciation and amortization	104	100	211	193
Property and other taxes	30	30	60	59
Total regulated operating costs and expenses	517	428	1,152	992
Nonregulated operating costs and expenses:
Cost of sales	191	193	365	405
Other	8	7	14	14
Total nonregulated operating costs and expenses	199	200	379	419
Total operating costs and expenses	716	628	1,531	1,411
Operating income	43	81	149	172
Non-operating income:
Interest income	1	1	1	1
Allowance for equity funds	4	3	8	5
Other, net	4	1	10	6
Total non-operating income	9	5	19	12
Fixed charges:
Interest on long-term debt	40	42	81	84
Other interest expense	1	0	1	1
Allowance for borrowed funds	(2)	(1)	(3)	(2)
Total fixed charges	39	41	79	83
Income before income tax (benefit) expense	13	45	89	101
Income tax (benefit) expense	(9)	(33)	(33)	(48)
Net income	22	78	122	149
Net income attributable to noncontrolling interests	1	1	1	1
Net income attributable to MidAmerican Funding member	$ 21	$ 77	$ 121	$ 148