Consolidated Statements of Operations (MEC) (MidAmerican Energy Company and Subsidiaries [Member], USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
MidAmerican Energy Company and Subsidiaries [Member]
Operating revenue:
Regulated electric	$ 487	$ 505	$ 1,276	$ 1,361
Regulated gas	99	110	562	625
Nonregulated	280	317	811	906
Total operating revenue	866	932	2,649	2,892
Regulated operating costs and expenses:
Cost of fuel, energy and capacity	146	157	383	443
Cost of gas sold	56	67	378	447
Other operating expenses	97	105	304	303
Maintenance	48	45	142	143
Depreciation and amortization	78	86	247	257
Property and other taxes	29	28	87	84
Total regulated operating costs and expenses	454	488	1,541	1,677
Nonregulated operating costs and expenses:
Cost of sales	256	290	740	833
Other	8	7	21	19
Total nonregulated operating costs and expenses	264	297	761	852
Total operating costs and expenses	718	785	2,302	2,529
Operating income	148	147	347	363
Non-operating income:
Interest income	0	0	1	1
Allowance for equity funds	7	1	12	3
Other, net	(1)	3	2	3
Total non-operating income	6	4	15	7
Fixed charges:
Interest on long-term debt	40	39	117	116
Other interest expense	0	0	1	1
Allowance for borrowed funds	(3)	0	(5)	(1)
Total fixed charges	37	39	113	116
Income before income tax expense	117	112	249	254
Income tax expense	10	4	19	7
Net income	107	108	230	247
Preferred dividends	0	0	1	0
Earnings on common stock	$ 107	$ 108	$ 229	$ 247