Components of Accumulated Other Comprehensive Loss, Net (MEC) (MidAmerican Energy Company and Subsidiaries [Member])

3 Months Ended

Mar. 31, 2012

MidAmerican Energy Company and Subsidiaries [Member]

Notes to Consolidated Financial Statements [Line Items]

Comprehensive Income (Loss) Note [Text Block]

(8) Components of Accumulated Other Comprehensive Loss, Net

The following table shows the change in accumulated other comprehensive loss by each component of other comprehensive income, net of applicable income taxes, for the three-month period ended March 31, 2012 (in millions):

	Unrealized			Unrealized			Accumulated
	Losses on			Losses on			Other
	Available-For-Sale			Cash Flow			Comprehensive
	Securities			Hedges			Loss, Net
Balance, December 31, 2011	$	(8	)	$	(26	)	$	(34	)
Other comprehensive loss	—			(14		)	(14		)
Balance, March 31, 2012	$	(8	)	$	(40	)	$	(48	)