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Joint Ownership of Generating and Transmission Facilities (Tables)
 12 Months Ended
Dec. 31, 2018
Jointly Owned Utility Plant Interests [Line Items]  
Schedule Joint Ownership of Generating and Transmission Facilities
The following table presents the Duke Energy Registrants' interest of jointly owned plant or facilities and amounts included on the Consolidated Balance Sheets. All facilities are operated by the Duke Energy Registrants and are included in the Electric Utilities and Infrastructure segment.
 
December 31, 2018
 
 
 
 
 
 
 
Construction

 
Ownership

 
Property, Plant

 
Accumulated

 
Work in

(in millions except for ownership interest)
Interest

 
and Equipment

 
Depreciation

 
Progress

Duke Energy Carolinas
 

 
 
 
 
 
 
Catawba (units 1 and 2)(a)
19.25
%
 
$
989

 
$
483

 
$
17

W.S. Lee CC(b)
86.67
%
 
593

 
12

 
4

Duke Energy Indiana
 

 
 

 
 

 
 

Gibson (unit 5)(c)
50.05
%
 
390

 
173

 
3

Vermillion(d)
62.50
%
 
168

 
135

 
—

Transmission and local facilities(c)
Various

 
5,037

 
1,769

 
—


(a)
Jointly owned with North Carolina Municipal Power Agency Number 1, NCEMC and PMPA.
(b)
Jointly owned with NCEMC.
(c)
Jointly owned with WVPA and Indiana Municipal Power Agency.
(d)
Jointly owned with WVPA.