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Jointly-Owned Electric Facility (Tables)
12 Months Ended
Dec. 31, 2011
Jointly-Owned Electric Facility [Abstract]  
Jointly Owned Electric Facility [Table Text Block]
 
Plant in Service
Accumulated Depreciation
Construction Work in Progress
% Ownership
Millions
 
 
 
 
Boswell Unit 4

$406.9


$177.4


$8.8

80
CapX2020
11.9


15.9

9.3 - 14.7
Total

$418.8


$177.4


$24.7