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Noncontrolling Interests (LLC) Noncontrolling Interests (LLC) (MidAmerican Funding, LLC and Subsidiaries [Domain])	6 Months Ended
	Jun. 30, 2013
MidAmerican Funding, LLC and Subsidiaries [Domain]
Noncontrolling Interest [Line Items]
Noncontrolling Interest Disclosure [Text Block]	(4) Noncontrolling Interests Refer to Note 4 of MidAmerican Energy's Notes to Financial Statements. Preferred securities of subsidiary comprised the total of noncontrolling interests on the Consolidated Balance Sheet as of December 31, 2012.

The entire disclosure for noncontrolling interest in consolidated subsidiaries, which could include the name of the subsidiary, the ownership percentage held by the parent, the ownership percentage held by the noncontrolling owners, the amount of the noncontrolling interest, the location of this amount on the balance sheet (when not reported separately), an explanation of the increase or decrease in the amount of the noncontrolling interest, the noncontrolling interest share of the net Income or Loss of the subsidiary, the location of this amount on the income statement (when not reported separately), the nature of the noncontrolling interest such as background information and terms, the amount of the noncontrolling interest represented by preferred stock, a description of the preferred stock, and the dividend requirements of the preferred stock.

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