Condensed Consolidated Balance Sheets - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 70.8	$ 90.5
Restricted cash	42.0	21.2
Accounts receivable, net	87.7	90.5
Inventories	11.9	10.7
Taxes applicable to subsequent years	54.5	72.6
Regulatory assets, current	34.8	41.1
Other prepayments and current assets	12.9	12.9
Assets Held-for-sale, Not Part of Disposal Group, Current	6.5	8.7
Total current assets	321.1	348.2
Property, plant & equipment:
Property, plant & equipment	1,637.9	1,615.6
Less: Accumulated depreciation and amortization	(324.3)	(310.8)
Property, plant and equipment, net of depreciation	1,313.6	1,304.8
Construction work in process	35.3	32.2
Total net property, plant & equipment	1,348.9	1,337.0
Other non-current assets:
Regulatory assets, non-current	151.2	152.6
Intangible assets, net of amortization	18.2	18.4
Other deferred assets	21.0	21.6
Disposal Group, Including Discontinued Operation, Assets, Noncurrent	5.3	5.3
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(0.2)
Total other non-current assets	195.7	197.9
Total assets	1,865.7	1,883.1
Current liabilities:
Current portion of long-term debt	103.6	103.6
Accounts payable	39.5	58.1
Accrued taxes	78.1	76.7
Accrued interest	30.0	14.3
Security deposits	29.0	21.3
Regulatory liabilities, current	39.0	34.9
Other current liabilities	17.9	22.0
Liabilities Held for Sale, Current	9.0	12.2
Total current liabilities	346.1	343.1
Non-current liabilities:
Long-term debt	1,372.1	1,372.3
Deferred taxes	113.0	116.1
Taxes payable	39.9	76.1
Regulatory liabilities, non-current	279.0	278.3
Pension, retiree and other benefits	74.2	82.3
Asset Retirement Obligations, Noncurrent	9.4	9.4
Other deferred credits	7.9	8.0
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent	52.5	69.2
Total non-current liabilities	1,948.0	2,011.7
Commitments and contingencies
Common shareholder's equity:
Common stock	0.0	0.0
Other paid-in capital	2,372.1	2,370.5
Accumulated other comprehensive income	1.8	2.2
Retained earnings/ (deficit)	(2,802.3)	(2,844.4)
Total common shareholder's equity	(428.4)	(471.7)
Total liabilities and shareholder's equity	1,865.7	1,883.1
THE DAYTON POWER AND LIGHT COMPANY [Member]
Current assets:
Cash and cash equivalents	18.8	45.0
Restricted cash	42.0	21.2
Accounts receivable, net	88.4	90.4
Inventories	8.1	7.7
Taxes applicable to subsequent years	54.3	72.4
Regulatory assets, current	34.8	41.1
Income Taxes Receivable, Current	12.9	19.6
Other prepayments and current assets	14.9	13.3
Total current assets	274.2	310.7
Property, plant & equipment:
Property, plant & equipment	2,292.4	2,274.4
Less: Accumulated depreciation and amortization	(997.2)	(988.0)
Property, plant and equipment, net of depreciation	1,295.2	1,286.4
Construction work in process	34.7	31.7
Total net property, plant & equipment	1,329.9	1,318.1
Other non-current assets:
Regulatory assets, non-current	151.2	152.6
Intangible assets, net of amortization	17.1	17.2
Other deferred assets	20.5	21.0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(0.1)
Total other non-current assets	188.8	190.8
Total assets	1,792.9	1,819.6
Current liabilities:
Current portion of long-term debt	4.6	4.6
Accounts payable	37.1	55.8
Accrued taxes	77.8	75.7
Accrued interest	0.7	0.4
Security deposits	29.0	21.3
Regulatory liabilities, current	39.0	34.9
Other current liabilities	13.5	17.5
Total current liabilities	201.7	210.2
Non-current liabilities:
Long-term debt	580.9	581.5
Deferred taxes	128.7	131.7
Taxes payable	41.0	77.1
Regulatory liabilities, non-current	279.0	278.3
Pension, retiree and other benefits	75.0	83.2
Asset Retirement Obligation	4.7	4.7
Other deferred credits	7.5	7.6
Total non-current liabilities	1,116.8	1,164.1
Commitments and contingencies
Common shareholder's equity:
Common stock	0.4	0.4
Other paid-in capital	711.8	711.8
Accumulated other comprehensive income	(34.9)	(35.3)
Retained earnings/ (deficit)	(202.9)	(231.6)
Total common shareholder's equity	474.4	445.3
Total liabilities and shareholder's equity	$ 1,792.9	$ 1,819.6