Consolidated Balance Sheets (MEC) (MidAmerican Energy Company [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
MidAmerican Energy Company [Member]
Utility plant, net:
Electric	$ 11,936	$ 11,416
Gas	1,365	1,301
Gross utility plant in service	13,301	12,717
Accumulated depreciation and amortization	(4,710)	(4,413)
Utility plant in service, net	8,591	8,304
Construction work in progress	737	318
Total utility plant, net	9,328	8,622
Current assets:
Cash and cash equivalents	194	354	1
Receivables, net	454	416
Income tax receivables	50	0
Inventories	229	240
Other	64	56
Total current assets	991	1,066
Other assets:
Regulatory assets	748	876
Investments and nonregulated property, net	598	535
Other	204	133
Total other assets	1,550	1,544
Total assets	11,869	11,232	10,310
Capitalization:
MidAmerican Energy common shareholder's equity	3,845	3,608
Preferred securities	0	27
Long-term debt, excluding current portion	3,202	2,590
Total capitalization	7,047	6,225
Current liabilities:
Current portion of long-term debt	350	669
Accounts payable	368	386
Taxes accrued	118	224
Interest accrued	37	27
Other	97	120
Total current liabilities	970	1,426
Other liabilities:
Deferred income taxes	2,294	2,164
Asset retirement obligations	430	318
Regulatory liabilities	875	750
Other	253	349
Total other liabilities	3,852	3,581
Total capitalization and liabilities	$ 11,869	$ 11,232