Income Taxes (Tables)

6 Months Ended

Jun. 30, 2017

Entity Information [Line Items]

Schedule of Effective Income Tax Rates

The following table details the effective tax rates for the three and six months ended June 30, 2017 and 2016.

	Three months ended		Six months ended
	June 30,		June 30,
	2017	2016	2017	2016
DPL	94.3%	39.2%	31.2%	39.5%

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 and six months ended June 30, 2017 and 2016.

	Three months ended		Six months ended
	June 30,		June 30,
	2017	2016	2017	2016
DP&L	38.8%	36.4%	31.3%	36.9%