Statements of Operations (MEC) (MidAmerican Energy Company [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
MidAmerican Energy Company [Member]
Operating revenue:
Regulated electric	$ 426	$ 411	$ 876	$ 826
Regulated gas	136	142	647	457
Nonregulated	207	204	471	394
Total operating revenue	769	757	1,994	1,677
Regulated operating costs and expenses:
Cost of fuel, energy and capacity	120	114	266	237
Cost of gas sold	83	88	492	312
Other operating expenses	123	111	232	217
Maintenance	77	70	121	115
Depreciation and amortization	85	104	170	211
Property and other taxes	29	30	61	60
Total regulated operating costs and expenses	517	517	1,342	1,152
Nonregulated operating costs and expenses:
Cost of sales	194	190	435	364
Other	7	7	13	12
Total nonregulated operating costs and expenses	201	197	448	376
Total operating costs and expenses	718	714	1,790	1,528
Operating income	51	43	204	149
Non-operating income:
Interest income	1	1	1	1
Allowance for equity funds	10	4	19	8
Other, net	3	3	5	7
Total non-operating income	14	8	25	16
Fixed charges:
Interest on long-term debt	45	35	85	70
Other interest expense	1	1	1	1
Allowance for borrowed funds	(4)	(2)	(8)	(3)
Total fixed charges	42	34	78	68
Income before income tax (benefit) expense	23	17	151	97
Income tax (benefit) expense	(9)	(7)	(38)	(30)
Net income	32	24	189	127
Preferred dividends	0	1	0	1
Earnings on common stock	$ 32	$ 23	$ 189	$ 126