Consolidated Statements of Operations (MEC) (MidAmerican Energy Company [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
MidAmerican Energy Company [Member]
Operating revenue:
Regulated electric	$ 1,762	$ 1,694	$ 1,662
Regulated gas	824	659	769
Nonregulated	817	889	1,070
Total operating revenue	3,403	3,242	3,501
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	27	29	29
Total nonregulated operating costs and expenses	791	836	1,001
Total operating costs and expenses	3,047	2,872	3,072
Operating income	356	370	429
Non-operating income:
Interest income	1	1	1
Allowance for equity funds	19	14	16
Other, net	15	9	7
Total non-operating income	35	24	24
Fixed charges:
Interest on long-term debt	150	142	157
Other interest expense	1	1	1
Allowance for borrowed funds	(7)	(5)	(7)
Total fixed charges	144	138	151
Income (loss) before income tax benefit	247	256	302
Income tax (benefit) expense	(103)	(99)	(17)
Net income	350	355	319
Preferred dividends	1	1	1
Earnings on common stock	$ 349	$ 354	$ 318