Equity (Tables)

12 Months Ended

Dec. 31, 2016

Entity Information [Line Items]

Preferred Shares Outstanding

The table below details the preferred shares outstanding at December 31, 2016 and 2015:

					Carrying Value (b) ($ in millions)
	Preferred Stock Rate	Redemption price ($ per share)		Shares Outstanding (a)	December 31, 2016		December 31, 2015
DP&L Series A	3.75%	$	102.50	93,280	$	—	$	7.4
DP&L Series B	3.75%	$	103.00	69,398	—		5.6
DP&L Series C	3.90%	$	101.00	65,830	—		5.4
Total				228,508	$	—	$	18.4

(a) DP&L's preferred stock was redeemed in October 2016. See below for more information.

(b) Carrying value is fair value at the Merger date plus cumulative accrued dividends, of which there were none at December 31, 2016 and 2015.

THE DAYTON POWER AND LIGHT COMPANY [Member]

Entity Information [Line Items]

Preferred Shares Outstanding

The table below details the preferred shares outstanding at December 31, 2016 and 2015:

					Par Value ($ in millions)
	Preferred Stock Rate	Redemption price ($ per share)		Shares Outstanding (a)	December 31, 2016		December 31, 2015
DP&L Series A	3.75%	$	102.50	93,280	$	—	$	9.3
DP&L Series B	3.75%	$	103.00	69,398	—		7.0
DP&L Series C	3.90%	$	101.00	65,830	—		6.6
Total				228,508	$	—	$	22.9