Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 104.1	$ 53.2
Restricted Cash	22.5	13.5
Accounts receivable, net (Note 2)	190.7	203.3
Inventories (Note 2)	86.4	82.7
Taxes applicable to subsequent years	18.5	70.6
Regulatory assets, current (Note 3)	30.0	20.8
Other prepayments and current assets	44.9	35.1
Total current assets	497.1	479.2
Property, plant and equipment:
Property, plant and equipment	2,724.1	2,677.0
Less: Accumulated depreciation and amortization	(288.5)	(206.7)
Property, plant and equipment, net of depreciation	2,435.6	2,470.3
Construction work in process	65.8	63.9
Total net property, plant and equipment	2,501.4	2,534.2
Other noncurrent assets:
Regulatory assets, non-current (Note 3)	147.8	159.7
Goodwill	317.0	452.8
Intangible assets, Net of amortization (Note 6)	38.6	42.8
Other deferred assets	40.7	52.8
Total other noncurrent assets	544.1	708.1
Total Assets	3,542.6	3,721.5
Current liabilities:
Current portion - long-term debt (Note 5)	110.1	10.2
Accounts payable	77.4	78.2
Accrued taxes	131.9	89.4
Accrued interest	43.2	28.5
Customer security deposits	14.4	13.9
Regulatory liabilities, current	10.0
Insurance and claims costs	7.0	6.7
Other current liabilities	66.3	64.2
Total current liabilities	460.3	291.1
Noncurrent liabilities:
Long-term debt (Note 5)	2,154.3	2,284.2
Deferred taxes (Note 6)	553.4	564.3
Taxes Payable	3.0	79.1
Regulatory liabilities, non-current (Note 3)	123.7	121.1
Pension, retiree and other benefits (Note 9)	42.7	51.6
Unamortized investment tax credit	2.4	2.8
Other deferred credits	71.0	69.4
Total noncurrent liabilities	2,950.5	3,172.5
Redeemable preferred stock	18.4	18.4
Common shareholders' equity:
Other paid-in capital	2,237.5	2,237.0
Accumulated other comprehensive loss	14.8	24.6
Retained earnings/ (deficit)	(2,138.9)	(2,022.1)
Total common shareholders' equity	113.4	239.5
Total Liabilities and Shareholders' Equity	3,542.6	3,721.5
THE DAYTON POWER AND LIGHT COMPANY [Member]
Current assets:
Cash and cash equivalents	31.0	22.9
Restricted Cash	22.5	13.0
Accounts receivable, net (Note 2)	142.8	147.5
Inventories (Note 2)	85.2	81.7
Taxes applicable to subsequent years	18.0	68.5
Regulatory assets, current (Note 3)	30.0	20.8
Other prepayments and current assets	43.1	32.5
Total current assets	372.6	386.9
Property, plant and equipment:
Property, plant and equipment	5,161.2	5,105.3
Less: Accumulated depreciation and amortization	(2,539.6)	(2,448.1)
Property, plant and equipment, net of depreciation	2,621.6	2,657.2
Construction work in process	65.1	60.9
Total net property, plant and equipment	2,686.7	2,718.1
Other noncurrent assets:
Regulatory assets, non-current (Note 3)	147.8	159.7
Intangible assets, Net of amortization (Note 6)	7.7	8.3
Other deferred assets	30.5	40.1
Total other noncurrent assets	186.0	208.1
Total Assets	3,245.3	3,313.1
Current liabilities:
Current portion - long-term debt (Note 5)	0.1	0.2
Accounts payable	73.9	73.9
Accrued taxes	108.2	81.0
Accrued interest	4.1	9.6
Customer security deposits	34.5	33.1
Regulatory liabilities, current	10.0
Other current liabilities	62.3	59.7
Total current liabilities	293.1	257.5
Noncurrent liabilities:
Long-term debt (Note 5)	877.0	876.9
Deferred taxes (Note 6)	629.6	632.3
Taxes Payable		76.5
Regulatory liabilities, non-current (Note 3)	123.7	121.1
Pension, retiree and other benefits (Note 9)	42.7	51.6
Unamortized investment tax credit	23.0	24.9
Other deferred credits	52.6	45.4
Total noncurrent liabilities	1,748.6	1,828.7
Redeemable preferred stock	22.9	22.9
Common shareholders' equity:
Common stock, at par value of $0.01 per share:	0.4	0.4
Other paid-in capital	803.5	803.5
Accumulated other comprehensive loss	(35.8)	(26.7)
Retained earnings/ (deficit)	412.6	426.8
Total common shareholders' equity	1,180.7	1,204.0
Total Liabilities and Shareholders' Equity	$ 3,245.3	$ 3,313.1