Consolidated Balance Sheets (LLC) (MidAmerican Funding, LLC and Subsidiaries [Domain], USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
MidAmerican Funding, LLC and Subsidiaries [Domain]
Utility plant, net:
Electric	$ 11,416	$ 10,587
Gas	1,301	1,255
Gross utility plant in service	12,717	11,842
Accumulated depreciation and amortization	(4,413)	(4,120)
Utility plant in service, net	8,304	7,722
Construction work in progress	318	173
Total utility plant, net	8,622	7,895
Current assets:
Cash and cash equivalents	354	1	203
Receivables, net	418	376
Income tax receivables	0	270
Inventories	240	201
Other	57	58
Total current assets	1,069	906
Other assets:
Investments and nonregulated property, net	561	528
Goodwill	1,270	1,270
Regulatory assets	876	831
Other	132	175
Total other assets	2,839	2,804
Total assets	12,530	11,605	10,310
Capitalization:
MidAmerican Funding member's equity	4,324	3,972
Noncontrolling interests	27	28
Long-term debt, excluding current portion	2,915	3,440
Total capitalization	7,266	7,440
Current liabilities:
Current portion of long-term debt	669	0
Note payable to affiliate	246	231
Accounts payable	386	314
Taxes accrued	227	107
Interest accrued	35	41
Other	120	120
Total current liabilities	1,683	813
Other liabilities:
Deferred income taxes	2,162	1,918
Asset retirement obligations	318	293
Regulatory liabilities	750	719
Other	351	422
Total other liabilities	3,581	3,352
Total capitalization and liabilities	$ 12,530	$ 11,605