Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues	$ 155.1	$ 179.6	$ 326.3	$ 383.6
Operating costs and expenses
Net fuel cost	0.3	0.5	0.9	1.4
Utilities Operating Expense, Purchased Power	49.2	54.2	112.0	127.9
Operating expenses:
Operation and maintenance	43.7	45.8	90.8	94.4
Depreciation and amortization	18.5	17.9	36.2	36.3
Taxes other than income taxes	21.0	18.0	41.9	37.5
Other Operating Income (Expense), Net	0.1	0.0	0.0	0.0
Costs and Expenses	132.8	136.4	281.8	297.5
Operating income	22.3	43.2	44.5	86.1
Other income / (expense), net:
Interest expense	(19.4)	(21.7)	(38.3)	(45.4)
Other income / (expense)	0.8	1.3	(0.1)	2.8
Total other expense, net	(18.6)	(65.3)	(38.4)	(87.5)
Income / (loss) from continuing operations before income tax	3.7	(22.1)	6.1	(1.4)
Income tax expense / (benefit) from continuing operations	2.8	(3.6)	2.7	(2.7)
Net income / (loss) from continuing operations	0.9	(18.5)	3.4	1.3
Income / (loss) from discontinued operations before income tax	(1.2)	2.8	(2.0)	31.1
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax	4.5	0.0	4.5	0.1
Income tax expense from discontinued operations	0.7	0.4	0.5	6.5
Net income from discontinued operations	2.6	2.4	2.0	24.7
Net income / (loss)	3.5	(16.1)	5.4	26.0
Gain (Loss) on Extinguishment of Debt	0.0	44.9	0.0	44.9
THE DAYTON POWER AND LIGHT COMPANY [Member]
Revenues	153.1	177.7	322.1	379.1
Operating costs and expenses
Net fuel cost	0.3	0.5	0.9	1.4
Utilities Operating Expense, Purchased Power	49.0	54.1	111.4	127.4
Operating expenses:
Operation and maintenance	42.8	44.8	89.9	93.0
Depreciation and amortization	18.2	17.5	35.5	35.5
Taxes other than income taxes	21.0	18.0	41.8	37.4
Gain (Loss) on Sale of Assets and Asset Impairment Charges, excluding Discontinued Operations	0.1	0.1	0.0	0.1
Costs and Expenses	131.4	135.0	279.5	294.8
Operating income	21.7	42.7	42.6	84.3
Other income / (expense), net:
Interest expense	(6.4)	(6.7)	(12.6)	(13.8)
Other income / (expense)	0.2	0.0	(1.6)	0.6
Total other expense, net	(6.2)	(6.7)	(14.2)	(13.2)
Income / (loss) from continuing operations before income tax	15.5	36.0	28.4	71.1
Income tax expense / (benefit) from continuing operations	(2.3)	6.2	(1.1)	12.3
Net income / (loss)	$ 17.8	$ 29.8	$ 29.5	$ 58.8