Income Taxes (Tables)

9 Months Ended

Sep. 30, 2017

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				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
Duke Energy	27.6	%	34.0	%	30.4	%	31.7	%
Duke Energy Carolinas	32.9	%	34.3	%	34.1	%	34.4	%
Progress Energy	29.1	%	32.8	%	31.9	%	34.7	%
Duke Energy Progress	31.7	%	31.4	%	32.4	%	33.5	%
Duke Energy Florida	34.8	%	36.0	%	36.1	%	37.0	%
Duke Energy Ohio	33.3	%	36.8	%	34.4	%	32.5	%
Duke Energy Indiana	38.3	%	35.2	%	39.0	%	34.0	%
Piedmont(a)	47.6	%	40.0	%	36.1	%	37.7	%

(a) Piedmont is in a net loss position for the three months ended September 30, 2017, and 2016.