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Income Taxes
 6 Months Ended
Jun. 30, 2019
Income Tax Disclosure [Abstract]  
Income Taxes INCOME TAXES
EFFECTIVE TAX RATES
The ETRs from continuing operations for each of the Duke Energy Registrants are included in the following table.
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2019

 
2018

 
2019

 
2018

Duke Energy
15.9
%
 
16.5
%
 
12.6
%
 
19.9
%
Duke Energy Carolinas
19.7
%
 
21.5
%
 
18.7
%
 
21.8
%
Progress Energy
16.7
%
 
17.3
%
 
17.0
%
 
15.4
%
Duke Energy Progress
16.3
%
 
20.1
%
 
17.1
%
 
16.8
%
Duke Energy Florida
19.6
%
 
18.0
%
 
19.5
%
 
17.4
%
Duke Energy Ohio
16.1
%
 
25.8
%
 
16.5
%
 
16.0
%
Duke Energy Indiana
24.2
%
 
25.8
%
 
24.2
%
 
25.8
%
Piedmont
22.2
%
 
27.3
%
 
21.8
%
 
23.9
%

The decrease in the ETR for Duke Energy for the six months ended June 30, 2019, is primarily due to a one-time valuation allowance charge in the prior year, an adjustment related to the income tax recognition for equity method investments recorded in the first quarter of 2019 and an increase in the amortization of excess deferred taxes. The equity method investment adjustment was immaterial and relates to prior years.
The decrease in the ETR for Duke Energy Carolinas for the three and six months ended June 30, 2019, is primarily due to an increase in the amortization of excess deferred taxes.
The increase in the ETR for Progress Energy for the six months ended June 30, 2019, is primarily due to a decrease in AFUDC equity in the current year.
The decrease in the ETR for Duke Energy Progress for the three months ended June 30, 2019, is primarily due to an increase in the amortization of excess deferred taxes.
The increase in the ETR for Duke Energy Florida for the three and six months ended June 30, 2019, is primarily due to a decrease in AFUDC equity in the current year.
The decrease in the ETR for Duke Energy Ohio for the three months ended June 30, 2019, is primarily due to an increase in the amortization of excess deferred taxes.
The decrease in the ETR for Duke Energy Indiana for the three and six months ended June 30, 2019, is primarily due to an increase in the amortization of excess deferred taxes.
The decrease in the ETR for Piedmont for the three months ended June 30, 2019, is primarily due to lower state tax rates. The decrease in the ETR for the six months ended June 30, 2019, is primarily due to an increase in the amortization of excess deferred taxes.