Income Taxes (Tables)

3 Months Ended

Mar. 31, 2019

Entity Information [Line Items]

Schedule of Effective Income Tax Rates

The following table details the effective tax rates for the three months ended March 31, 2019 and 2018.

	Three months ended
	March 31,
	2019	2018
DPL	14.1%	8.0%

THE DAYTON POWER AND LIGHT COMPANY [Member]

Entity Information [Line Items]

Schedule of Effective Income Tax Rates

The following table details the effective tax rates for the three months ended March 31, 2019 and 2018.

	Three months ended
	March 31,
	2019	2018
DP&L	17.4%	18.7%