Balance Sheets (MEC) (MidAmerican Energy Company [Member], USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
MidAmerican Energy Company [Member]
Utility plant, net:
Electric	$ 12,189	$ 11,936
Gas	1,385	1,365
Gross utility plant in service	13,574	13,301
Accumulated depreciation and amortization	(4,820)	(4,710)
Utility plant in service, net	8,754	8,591
Construction work in progress	897	737
Total utility plant, net	9,651	9,328
Current assets:
Cash and cash equivalents	647	194
Receivables, net	435	454
Income taxes receivable	17	50
Inventories	179	229
Other	88	64
Total current assets	1,366	991
Other assets:
Regulatory assets	835	748
Investments and nonregulated property, net	616	598
Other	219	204
Total other assets	1,670	1,550
Total assets	12,687	11,869
Capitalization:
MidAmerican Energy common shareholder's equity	4,058	3,845
Long-term debt, excluding current portion	4,053	3,202
Total capitalization	8,111	7,047
Current liabilities:
Current portion of long-term debt	0	350
Accounts payable	388	368
Taxes accrued	121	118
Interest accrued	41	37
Other	106	97
Total current liabilities	656	970
Other liabilities:
Deferred income taxes	2,380	2,294
Asset retirement obligations	440	430
Regulatory liabilities	879	875
Other	221	253
Total other liabilities	3,920	3,852
Total capitalization and liabilities	$ 12,687	$ 11,869