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Jointly-Owned Electric Plants (Tables)
12 Months Ended
Dec. 31, 2012
Jointly-Owned Electric Plants [Abstract]  
Proportionate Ownership Interest In Jointly-Owned Facilities
NEE's and FPL's proportionate ownership interest in jointly-owned facilities is as follows:

 
December 31, 2012
 
Ownership
Interest
 
Gross
Investment(a)
 
Accumulated
Depreciation(a)
 
Construction
Work
in Progress
 
 
 
(millions)
FPL:
 
 
 
 
 
 
 
St. Lucie Unit No. 2
85
%
 
$
1,808

 
$
573

 
$
1

St. Johns River Power Park units and coal terminal
20
%
 
$
386

 
$
173

 
$
11

Scherer Unit No. 4
76
%
 
$
1,067

 
$
271

 
$
14

NEER:
 
 
 
 
 
 
 
Duane Arnold
70
%
 
$
366

 
$
88

 
$
48

Seabrook
88.23
%
 
$
924

 
$
164

 
$
91

Wyman Station Unit No. 4
84.35
%
 
$
109

 
$
44

 
$

Corporate and Other:
 
 
 
 
 
 
 
Transmission substation assets located in Seabrook, New Hampshire
88.23
%
 
$
66

 
$
14

 
$
1

______________________
(a)
Excludes nuclear fuel.