Statements of Operations (MEC) (MidAmerican Energy Company [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
MidAmerican Energy Company [Member]
Operating revenue:
Regulated electric	$ 450	$ 415
Regulated gas	511	315
Nonregulated	264	190
Total operating revenue	1,225	920
Regulated operating costs and expenses:
Cost of fuel, energy and capacity	146	123
Cost of gas sold	409	224
Other operating expenses	109	106
Maintenance	44	45
Depreciation and amortization	85	107
Property and other taxes	32	30
Total regulated operating costs and expenses	825	635
Nonregulated operating costs and expenses:
Cost of sales	241	174
Other	6	5
Total nonregulated operating costs and expenses	247	179
Total operating costs and expenses	1,072	814
Operating income	153	106
Non-operating income:
Allowance for equity funds	9	4
Other, net	2	4
Total non-operating income	11	8
Fixed charges:
Interest on long-term debt	40	35
Allowance for borrowed funds	(4)	(1)
Total fixed charges	36	34
Income before income tax (benefit) expense	128	80
Income tax (benefit) expense	(29)	(23)
Net income	157	103
Preferred dividends	0	0
Earnings on common stock	$ 157	$ 103