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

9 Months Ended

Sep. 30, 2013

MidAmerican Energy Company [Member]

Accumulated Other Comprehensive Income (Loss) [Line Items]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following table shows the change in AOCI by each component of other comprehensive income, net of applicable income taxes, for the nine-month period ended September 30, 2013 (in millions):

	Unrealized			Unrealized			Accumulated
	Losses on			Losses on			Other
	Available-For-Sale			Cash Flow			Comprehensive
	Securities			Hedges			Loss, Net
Balance, December 31, 2012	$	(5	)	$	(19	)	$	(24	)
Other comprehensive income	1			3			4
Balance, September 30, 2013	$	(4	)	$	(16	)	$	(20	)