Revenue (Tables)

6 Months Ended

Jun. 30, 2019

Disaggregation of Revenue [Table Text Block]

DPL's revenue from contracts with customers was $173.2 million and $168.5 million for the three months ended June 30, 2019 and 2018, respectively, and $381.5 million and $365.0 million for the six months ended June 30, 2019 and 2018, respectively.

The following table presents our revenue from contracts with customers and other revenue by segment for the three and six months ended June 30, 2019 and 2018:

$ in millions	Utility		Other		Adjustments and Eliminations			Total
	Three Months Ended June 30, 2019
Retail revenue
Retail revenue from contracts with customers	$	150.6	$	—	$	0.3		$	150.9
Other retail revenue (a)	10.4		—		—			10.4
Wholesale revenue
Wholesale revenue from contracts with customers	3.4		3.0		(0.6		)	5.8
RTO ancillary revenue	10.9		0.1		—			11.0
Capacity revenue	1.8		1.5		—			3.3
Miscellaneous revenue from contracts with customers (b)	—		2.2		—			2.2
Miscellaneous revenue	0.6		0.8		(0.8		)	0.6
Total revenues	$	177.7	$	7.6	$	(1.1	)	$	184.2
	Three Months Ended June 30, 2018
Retail revenue
Retail revenue from contracts with customers	$	139.7	$	—	$	(0.2	)	$	139.5
Other retail revenue (a)	9.6		—		—			9.6
Wholesale revenue
Wholesale revenue from contracts with customers	7.1		4.6		—			11.7
RTO ancillary revenue	10.5		0.1		—			10.6
Capacity revenue	1.9		2.1		—			4.0
Miscellaneous revenue from contracts with customers (b)	—		2.7		—			2.7
Miscellaneous revenue	—		0.8		(0.8		)	—
Total revenues	$	168.8	$	10.3	$	(1.0	)	$	178.1
	Six months ended June 30, 2019
Retail revenue
Retail revenue from contracts with customers	$	333.3	$	—	$	—		$	333.3
Other retail revenue (a)	11.1		—		—			11.1
Wholesale revenue
Wholesale revenue from contracts with customers	8.4		6.4		(0.6		)	14.2
RTO ancillary revenue	21.8		0.1		—			21.9
Capacity revenue	3.9		3.1		—			7.0
Miscellaneous revenue from contracts with customers (b)	—		5.1		—			5.1
Miscellaneous revenue	0.6		1.6		(1.6		)	0.6
Total revenues	$	379.1	$	16.3	$	(2.2	)	$	393.2
	Six months ended June 30, 2018
Retail revenue
Retail revenue from contracts with customers	$	300.9	$	—	$	(0.4	)	$	300.5
Other retail revenue (a)	18.8		—		—			18.8
Wholesale revenue
Wholesale revenue from contracts with customers	19.7		11.1		—			30.8
RTO ancillary revenue	21.6		0.2		—			21.8
Capacity revenue	3.8		3.0		—			6.8
Miscellaneous revenue from contracts with customers (b)	—		5.1		—			5.1
Miscellaneous revenue	—		1.4		(1.4		)	—
Total revenues	$	364.8	$	20.8	$	(1.8	)	$	383.8

(a) Other retail revenue primarily includes alternative revenue programs not accounted for under FASC 606.

(b) Miscellaneous revenue from contracts with customers primarily includes revenues for various services provided by Miami Valley Lighting.

Subsidiaries [Member]

Disaggregation of Revenue [Table Text Block]

DP&L's revenue from contracts with customers was $166.7 million and $159.2 million for the three months ended June 30, 2019 and 2018, respectively, and $367.4 million and $346.0 million for the six months ended June 30, 2019 and 2018, respectively. The following table presents our revenue from contracts with customers and other revenue for the three and six months ended June 30, 2019 and 2018:

	Three months ended				Six months ended
$ in millions	June 30, 2019		June 30, 2018		June 30, 2019		June 30, 2018
Retail revenue
Retail revenue from contracts with customers	$	150.6	$	139.7	$	333.3	$	300.9
Other retail revenue (a)	10.4		9.6		11.1		18.8
Wholesale revenue
Wholesale revenue from contracts with customers	3.4		7.1		8.4		19.7
RTO ancillary revenue	10.9		10.5		21.8		21.6
Capacity revenue	1.8		1.9		3.9		3.8
Miscellaneous revenue	0.6		—		0.6		—
Total revenues	$	177.7	$	168.8	$	379.1	$	364.8

(a) Other retail revenue primarily includes alternative revenue programs not accounted for under FASC 606.