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Income Taxes
3 Months Ended
Mar. 31, 2014
Income Taxes And Other Taxes [Abstract]  
Income Taxes And Other Taxes

16. INCOME TAXES

The effective tax rates for each of the Duke Energy Registrants are included in the following table.

        
  Three Months Ended March 31,
  2014 2013
Duke Energy  58.6%  34.2%
Duke Energy Carolinas  37.4%  37.1%
Progress Energy  36.9%  39.6%
Duke Energy Progress  36.6%  38.1%
Duke Energy Florida  38.5%  39.1%
Duke Energy Ohio  35.4%  37.1%
Duke Energy Indiana  36.8%  37.5%
        

The increase in the effective tax rate for Duke Energy for the three months ended March 31, 2014 is primarily due to the first quarter of 2014 impairment of the Midwest Generation business.

The decrease in the effective tax rate for Progress Energy for the three months ended March 31, 2014 is primarily due to the reduction of state tax rates in certain jurisdictions.

The decrease in the effective tax rate for Duke Energy Progress for the three months ended March 31, 2014 is primarily due to the reduction of state tax rates in certain jurisdictions.

The decrease in the effective tax rate for Duke Energy Ohio for the three months ended March 31, 2014 is primarily due to the first quarter of 2014 impairment of the Midwest Generation business.