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Debt (Tables)
12 Months Ended
Dec. 31, 2017
Debt Instrument [Line Items]  
Long-term Debt
Long-term debt
 
 
 
 
 
 
 
 
$ in millions
 
Interest Rate
 
Maturity
 
December 31, 2017
 
December 31, 2016
Term loan - rates from: 4.01% - 4.60% (a) and 4.00% - 4.01% (b)
 
 
 
2022
 
$
440.6

 
$
445.0

Tax-exempt First Mortgage Bonds
 
4.8%
 
2036
 

 
100.0

Tax-exempt First Mortgage Bonds - rates from: 1.52% - 1.92% (a) and 1.29% - 1.42% (b)
 
 
 
2020
 
200.0

 
200.0

U.S. Government note
 
4.2%
 
2061
 
17.8

 
18.0

Capital leases
 

 

 
0.2

 
0.4

Unamortized deferred financing costs
 
 
 
 
 
(9.8
)
 
(10.7
)
Unamortized debt discounts and premiums, net
 
 
 
 
 
(2.0
)
 
(5.5
)
Total long-term debt at subsidiary
 
 
 
 
 
646.8

 
747.2

 
 
 
 
 
 
 
 
 
Bank term loan - rates from: 3.02% - 4.10% (a) and 2.67% - 3.02% (b)
 
 
 
2020
 
70.0

 
125.0

Senior unsecured bonds
 
6.75%
 
2019
 
200.0

 
200.0

Senior unsecured bonds
 
7.25%
 
2021
 
780.0

 
780.0

Note to DPL Capital Trust II (c)
 
8.125%
 
2031
 
15.6

 
15.6

Unamortized deferred financing costs
 
 
 
 
 
(6.8
)
 
(8.8
)
Unamortized debt discounts and premiums, net
 
 
 
 
 
(0.5
)
 
(0.6
)
Total long-term debt
 
 
 
 
 
1,705.1

 
1,858.4

Less: current portion
 
 
 
 
 
(4.7
)
 
(29.7
)
Long-term debt, net of current portion
 
 
 
 
 
$
1,700.4

 
$
1,828.7


(a)
Range of interest rates for the year ended December 31, 2017.
(b)
Range of interest rates for the year ended December 31, 2016.
(c)
Note payable to related party. See Note 13 – Related Party Transactions for additional information.
Long-term Debt Maturities
At December 31, 2017, maturities of long-term debt are summarized as follows:
Due during the years ending December 31,
 
$ in millions
 
2018
$
4.7

2019
224.5

2020
254.6

2021
784.6

2022
422.9

Thereafter
32.7

 
1,724.0

Unamortized discounts and premiums, net
(2.5
)
Total long-term debt
$
1,721.5

THE DAYTON POWER AND LIGHT COMPANY [Member]  
Debt Instrument [Line Items]  
Long-term Debt
Long-term debt is as follows:
Long-term debt
 
 
 
 
 
 
 
 
$ in millions
 
Interest Rate
 
Maturity
 
December 31, 2017
 
December 31, 2016
Term loan - rates from: 4.01% - 4.60% (a) and 4.00% - 4.01% (b)
 
 
 
2022
 
$
440.6

 
$
445.0

Tax-exempt First Mortgage Bonds
 
4.8%
 
2036
 

 
100.0

Tax-exempt First Mortgage Bonds - rates from: 1.52% - 1.92% (a) and 1.29% - 1.42% (b)
 
 
 
2020
 
200.0

 
200.0

U.S. Government note
 
4.2%
 
2061
 
17.8

 
18.0

Capital leases
 

 

 

 
0.4

Debt classified as held-for-sale
 
 
 
 
 

 
(13.4
)
Unamortized deferred financing costs
 
 
 
 
 
(9.8
)
 
(11.7
)
Unamortized debt discount
 
 
 
 
 
(2.0
)
 
(2.2
)
Total long-term debt
 
 
 
 
 
646.6

 
736.1

Less: current portion
 
 
 
 
 
(4.6
)
 
(4.6
)
Long-term debt, net of current portion
 
 
 
 
 
$
642.0

 
$
731.5


(a)
Range of interest rates for the year ended December 31, 2017.
(b)
Range of interest rates for the year ended December 31, 2016
Long-term Debt Maturities
At December 31, 2017, maturities of long-term debt are summarized as follows:
Due during the years ending December 31,
 
$ in millions
 
2018
$
4.6

2019
4.6

2020
204.6

2021
4.6

2022
422.9

Thereafter
17.1

 
658.4

Unamortized discounts and premiums, net
(2.0
)
Total long-term debt
$
656.4