Consolidated Statements of Operations (LLC) (MidAmerican Funding, LLC and Subsidiaries [Domain], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
MidAmerican Funding, LLC and Subsidiaries [Domain]
Operating revenue:
Regulated electric	$ 1,762	$ 1,694	$ 1,662
Regulated gas	824	659	769
Nonregulated	827	894	1,072
Total operating revenue	3,413	3,247	3,503
Regulated operating costs and expenses:
Cost of fuel, energy and capacity	517	458	491
Cost of gas sold	558	424	519
Other operating expenses	435	427	413
Maintenance	224	220	197
Depreciation and amortization	403	392	336
Property and other taxes	119	115	115
Total regulated operating costs and expenses	2,256	2,036	2,071
Nonregulated operating costs and expenses:
Cost of sales	764	807	972
Other	36	35	32
Total nonregulated operating costs and expenses	800	842	1,004
Total operating costs and expenses	3,056	2,878	3,075
Operating income	357	369	428
Non-operating income:
Interest income	1	1	1
Allowance for equity funds	19	14	16
Other, net	21	13	10
Total non-operating income	41	28	27
Fixed charges:
Interest on long-term debt	173	164	181
Other interest expense	1	3	2
Allowance for borrowed funds	(7)	(5)	(7)
Total fixed charges	167	162	176
Income (loss) before income tax benefit	231	235	279
Income tax (benefit) expense	(110)	(108)	(26)
Net income	341	343	305
Net income attributable to noncontrolling interests	1	1	1
Net income attributable to MidAmerican Funding	$ 340	$ 342	$ 304