Statements of Operations (MEC) - MidAmerican Energy Company [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Operating revenue:
Regulated electric	$ 461	$ 426	$ 887	$ 876
Regulated gas	110	136	405	647
Nonregulated	222	207	447	471
Total operating revenue	793	769	1,739	1,994
Regulated operating costs and expenses:
Cost of fuel, energy and capacity	104	120	226	266
Cost of gas sold	55	83	256	492
Other operating expenses	119	123	236	232
Maintenance	51	77	100	121
Depreciation and amortization	99	85	199	170
Property and other taxes	30	29	63	61
Total regulated operating costs and expenses	458	517	1,080	1,342
Nonregulated operating costs and expenses:
Cost of sales	204	194	416	435
Other	9	7	15	13
Total nonregulated operating costs and expenses	213	201	431	448
Total operating costs and expenses	671	718	1,511	1,790
Operating income	122	51	228	204
Non-operating income:
Interest income	1	1	1	1
Allowance for equity funds	6	10	11	19
Other, net	0	3	4	5
Total non-operating income	7	14	16	25
Fixed charges:
Interest on long-term debt	44	45	88	85
Other interest expense	1	1	1	1
Allowance for borrowed funds	(2)	(4)	(4)	(8)
Total fixed charges	43	42	85	78
Income before income tax benefit	86	23	159	151
Income tax benefit	(45)	(9)	(66)	(38)
Net income	$ 131	$ 32	$ 225	$ 189