Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 39.2	$ 53.2
Restricted Cash	24.5	13.5
Accounts receivable, net (Note 2)	196.0	203.3
Inventories (Note 2)	95.4	82.7
Taxes applicable to subsequent years	37.1	70.6
Regulatory assets, current (Note 3)	29.8	20.8
Other prepayments and current assets	53.7	35.1
Total current assets	475.7	479.2
Property, plant and equipment:
Property, plant and equipment	2,703.1	2,677.0
Less: Accumulated depreciation and amortization	(261.4)	(206.7)
Property, plant and equipment, net of depreciation	2,441.7	2,470.3
Construction work in process	66.2	63.9
Total net property, plant and equipment	2,507.9	2,534.2
Other noncurrent assets:
Regulatory assets, non-current (Note 3)	150.5	159.7
Goodwill	317.0	452.8
Intangible assets, Net of amortization (Note 6)	37.7	42.8
Other deferred assets	41.2	52.8
Total other noncurrent assets	546.4	708.1
Total Assets	3,530.0	3,721.5
Current liabilities:
Current portion - long-term debt (Note 5)	30.1	10.2
Accounts payable	88.8	78.2
Accrued taxes	160.4	89.4
Accrued interest	28.3	28.5
Customer security deposits	14.3	13.9
Insurance and claims costs	7.2	6.7
Other current liabilities	71.2	64.2
Total current liabilities	400.3	291.1
Noncurrent liabilities:
Long-term debt (Note 5)	2,264.3	2,284.2
Deferred taxes (Note 6)	552.3	564.3
Taxes Payable	43.9	79.1
Regulatory liabilities, non-current (Note 3)	122.6	121.1
Pension, retiree and other benefits (Note 9)	42.9	51.6
Unamortized investment tax credit	2.5	2.8
Other deferred credits	72.4	69.4
Total noncurrent liabilities	3,100.9	3,172.5
Redeemable preferred stock	18.4	18.4
Common shareholders' equity:
Other paid-in capital	2,237.3	2,237.0
Accumulated other comprehensive loss	10.4	24.6
Retained earnings/ (deficit)	(2,237.3)	(2,022.1)
Total common shareholders' equity	10.4	239.5
Total Liabilities and Shareholders' Equity	3,530.0	3,721.5
THE DAYTON POWER AND LIGHT COMPANY [Member]
Current assets:
Cash and cash equivalents	18.3	22.9
Restricted Cash	24.4	13.0
Accounts receivable, net (Note 2)	147.1	147.5
Inventories (Note 2)	94.3	81.7
Taxes applicable to subsequent years	36.2	68.5
Regulatory assets, current (Note 3)	29.8	20.8
Other prepayments and current assets	52.6	32.5
Total current assets	402.7	386.9
Property, plant and equipment:
Property, plant and equipment	5,144.1	5,105.3
Less: Accumulated depreciation and amortization	(2,512.7)	(2,448.1)
Property, plant and equipment, net of depreciation	2,631.4	2,657.2
Construction work in process	65.0	60.9
Total net property, plant and equipment	2,696.4	2,718.1
Other noncurrent assets:
Regulatory assets, non-current (Note 3)	150.5	159.7
Intangible assets, Net of amortization (Note 6)	5.6	8.3
Other deferred assets	30.5	40.1
Total other noncurrent assets	186.6	208.1
Total Assets	3,285.7	3,313.1
Current liabilities:
Current portion - long-term debt (Note 5)	0.1	0.2
Accounts payable	84.4	73.9
Accrued taxes	83.4	81.0
Accrued interest	9.9	9.6
Customer security deposits	33.5	33.1
Other current liabilities	66.9	59.7
Total current liabilities	278.2	257.5
Noncurrent liabilities:
Long-term debt (Note 5)	877.0	876.9
Deferred taxes (Note 6)	627.7	632.3
Taxes Payable	42.6	76.5
Regulatory liabilities, non-current (Note 3)	122.6	121.1
Pension, retiree and other benefits (Note 9)	42.9	51.6
Unamortized investment tax credit	23.6	24.9
Other deferred credits	50.6	45.4
Total noncurrent liabilities	1,787.0	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	803.4	803.5
Accumulated other comprehensive loss	(40.9)	(26.7)
Retained earnings/ (deficit)	434.7	426.8
Total common shareholders' equity	1,197.6	1,204.0
Total Liabilities and Shareholders' Equity	$ 3,285.7	$ 3,313.1