Long-term Debt (MEC) (Tables) (MidAmerican Energy Company and Subsidiaries [Member])

12 Months Ended

Dec. 31, 2012

MidAmerican Energy Company and Subsidiaries [Member]

Debt Instrument [Line Items]

Schedule of Maturities of Long-term Debt [Table Text Block]

The annual repayments of MidAmerican Energy's long-term debt for the years beginning January 1, 2013, and thereafter, excluding unamortized discounts, are as follows (in millions):

2013	$	669
2014	350
2015	427
2016	34
2017	254
2018 and thereafter	1,557