Income Taxes (Tables)

3 Months Ended

Mar. 31, 2018

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,
	2018		2017
Duke Energy	22.5	%	32.4	%
Duke Energy Carolinas	22.0	%	35.4	%
Progress Energy	13.2	%	34.1	%
Duke Energy Progress	14.1	%	34.1	%
Duke Energy Florida	16.3	%	36.6	%
Duke Energy Ohio	32.4	%	35.4	%
Duke Energy Indiana	25.9	%	39.3	%
Piedmont	24.1	%	37.9	%