Asset Retirement Obligations (MEC) (Tables) (MidAmerican Energy Company [Member])

12 Months Ended

Dec. 31, 2013

MidAmerican Energy Company [Member]

Asset Retirement Obligations Disclosure [Line Items]

Asset Retirement Obligations by Type [Table Text Block]

The following table presents MidAmerican Energy's ARO liabilities by asset type as of December 31, (in millions):

	2013		2012
Quad Cities Station	$	254	$	243
Fossil-fueled generating facilities	127		24
Wind-powered generating facilities	45		48
Other	4		3
Total asset retirement obligations	$	430	$	318
Quad Cities Station nuclear decommissioning trust funds(1)	$	394	$	337

Asset Retirement Obligations Disclosure [Table Text Block]

The following table reconciles the beginning and ending balances of MidAmerican Energy's ARO liabilities for the years ended December 31, (in millions):

	2013		2012
Beginning balance	$	318	$	293
Change in estimated costs	88		—
Additions	5		10
Retirements	—		(1		)
Accretion	19		16
Ending balance	$	430	$	318