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Income Taxes (Tables)
3 Months Ended
Mar. 31, 2016
Income Tax Disclosure [Abstract]  
Summary of Effective Tax Rates
The effective tax rates from continuing operations for each of the Duke Energy Registrants are included in the following table.
 
Three Months Ended
 
March 31,
 
2016

 
2015

Duke Energy
23.4
%
 
31.9
%
Duke Energy Carolinas
34.1
%
 
35.8
%
Progress Energy
36.7
%
 
35.4
%
Duke Energy Progress
35.4
%
 
33.8
%
Duke Energy Florida
37.9
%
 
38.6
%
Duke Energy Ohio
26.9
%
 
36.7
%
Duke Energy Indiana
30.2
%
 
36.6
%