Balance Sheets (MEC) - MidAmerican Energy Company [Member] - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Utility plant, net:
Electric	$ 13,534	$ 13,426
Gas	1,462	1,432
Gross utility plant in service	14,996	14,858
Accumulated depreciation and amortization	(5,042)	(4,954)
Utility plant in service, net	9,954	9,904
Construction work in progress	893	606
Total utility plant, net	10,847	10,510
Current assets:
Cash and cash equivalents	302	29
Receivables, net	392	433
Income taxes receivable	0	307
Inventories	181	185
Other	84	87
Total current assets	959	1,041
Other assets:
Regulatory assets	959	908
Investments and nonregulated property, net	640	634
Other	154	164
Total other assets	1,753	1,706
Total assets	13,559	13,257
Capitalization:
MidAmerican Energy common shareholder's equity	4,472	4,250
Long-term debt, excluding current portion	3,634	3,630
Total capitalization	8,106	7,880
Current liabilities:
Short-term debt	0	50
Current portion of long-term debt	431	426
Accounts payable	373	392
Taxes accrued	133	128
Interest accrued	40	40
Other	162	131
Total current liabilities	1,139	1,167
Other liabilities:
Deferred income taxes	2,738	2,663
Asset retirement obligations	457	432
Regulatory liabilities	836	837
Other	283	278
Total other liabilities	4,314	4,210
Total capitalization and liabilities	$ 13,559	$ 13,257