Jointly Owned Utility Facilities (MEC) (MidAmerican Energy Company and Subsidiaries [Member])

12 Months Ended

Dec. 31, 2012

MidAmerican Energy Company and Subsidiaries [Member]

Jointly Owned Utility Plant Interests [Line Items]

Jointly Owned Utility Facilities Disclosure [Text Block]

(3)Jointly Owned Utility Facilities

Under joint facility ownership agreements with other utilities, MidAmerican Energy, as a tenant in common, has undivided interests in jointly owned generation and transmission facilities. MidAmerican Energy accounts for its proportionate share of each facility, and each joint owner has provided financing for its share of each facility. Operating costs of each facility are assigned to joint owners based on their percentage of ownership or energy production, depending on the nature of the cost. Operating costs and expenses on the Consolidated Statements of Operations include MidAmerican Energy's share of the expenses of these facilities.

The amounts shown in the table below represent MidAmerican Energy's share in each jointly owned facility as of December 31, 2012 (dollars in millions):

					Accumulated		Construction
	Company		Plant in		Depreciation and		Work in
	Share		Service		Amortization		Progress
Louisa Unit No. 1	88.0	%	$	738	$	368	$	1
Quad Cities Unit Nos. 1 & 2(1)	25.0		595		272		37
Walter Scott, Jr. Unit No. 3	79.1		542		269		1
Walter Scott, Jr. Unit No. 4(2)	59.7		437		65		1
Ottumwa Unit No. 1	52.0		274		166		88
George Neal Unit No. 3	72.0		181		136		71
George Neal Unit No. 4	40.6		171		143		71
Transmission facilities(3)	Various		238		75		—
Total			$	3,176	$	1,494	$	270

(1) Includes amounts related to nuclear fuel.

(2) Plant in service and accumulated depreciation and amortization amounts are net of credits applied under Iowa revenue sharing arrangements totaling $319 million and $46 million, respectively.

(3) Includes 345 and 161 kilovolt transmission lines and substations.