Unaudited Quarterly Operating Results (MEC) (MidAmerican Energy Company and Subsidiaries [Member])

12 Months Ended

Dec. 31, 2011

MidAmerican Energy Company and Subsidiaries [Member]

Notes to Consolidated Financial Statements [Line Items]

Quarterly Financial Information [Text Block]

(19) Unaudited Quarterly Operating Results



	2011
	1^st Quarter		2^nd Quarter		3^rd Quarter		4^th Quarter
	(In millions)
Operating revenue	$	979	$	804	$	866	$	852
Operating income	113		86		148		82
Net income	74		49		107		89
Earnings on common stock	74		48		107		89

	2010
	1^st Quarter		2^nd Quarter		3^rd Quarter		4^th Quarter
	(In millions)
Operating revenue	$	1,135	$	825	$	932	$	918
Operating income	125		91		147		96
Net income	83		56		108		110
Earnings on common stock	83		56		108		110

Quarterly data reflect seasonal variations common to a Midwest utility. Net income for the fourth quarter of 2011 and 2010 reflects $35 million and $54 million, respectively, of income tax benefits recognized for changes in the tax accounting methods used to determine current income tax deductions. Refer to Note 13 for further discussion regarding MidAmerican Energy's changes in tax accounting methods.

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

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