Revenue (Tables)

3 Months Ended

Mar. 31, 2023

Disaggregation of Revenue [Table Text Block]

The following table presents our revenue from contracts with customers and other revenue by segment for the three months ended March 31, 2023 and 2022:

$ in millions	Utility		Other		Adjustments and Eliminations		Total
	Three months ended March 31, 2023
Retail revenue
Retail revenue from contracts with customers
Residential revenue	$	143.0	$	—	$	—	$	143.0
Commercial revenue	42.9		—		—		42.9
Industrial revenue	17.7		—		—		17.7
Governmental revenue	6.1		—		—		6.1
Other (a)	3.2		—		—		3.2
Total retail revenue from contracts with customers	212.9		—		—		212.9
Wholesale revenue
Wholesale revenue from contracts with customers	3.8		—		(0.1)		3.7
RTO ancillary revenue	19.7		—		—		19.7
Capacity revenue	0.5		—		—		0.5
Miscellaneous revenue
Miscellaneous revenue from contracts with customers (b)	—		2.4		—		2.4
Other miscellaneous revenue	0.9		0.9		(0.9)		0.9
Total revenues	$	237.8	$	3.3	$	(1.0)	$	240.1
	Three months ended March 31, 2022
Retail revenue
Retail revenue from contracts with customers
Residential revenue	$	109.9	$	—	$	—	$	109.9
Commercial revenue	35.0		—		—		35.0
Industrial revenue	16.9		—		—		16.9
Governmental revenue	6.1		—		—		6.1
Other (a)	2.9		—		—		2.9
Total retail revenue from contracts with customers	170.8		—		—		170.8
Wholesale revenue
Wholesale revenue from contracts with customers	7.7		—		(0.2)		7.5
RTO ancillary revenue	15.1		—		—		15.1
Capacity revenue	1.8		—		—		1.8
Miscellaneous revenue
Miscellaneous revenue from contracts with customers (b)	—		2.5		—		2.5
Other miscellaneous revenue	1.6		0.9		(0.9)		1.6
Total revenues	$	197.0	$	3.4	$	(1.1)	$	199.3

(a)    "Other" primarily includes operation and maintenance service revenues, billing service fees from CRES providers and other miscellaneous retail revenues from contracts with customers.

(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]

The following table presents our revenue from contracts with customers and other revenue for the three months ended March 31, 2023 and 2022:

	Three months ended
	March 31,
$ in millions	2023		2022
Retail revenue
Retail revenue from contracts with customers
Residential revenue	$	143.0	$	109.9
Commercial revenue	42.9		35.0
Industrial revenue	17.7		16.9
Governmental revenue	6.1		6.1
Other (a)	3.2		2.9
Total retail revenue from contracts with customers	212.9		170.8
Wholesale revenue
Wholesale revenue from contracts with customers	3.8		7.7
RTO ancillary revenue	19.7		15.1
Capacity revenue	0.5		1.8
Miscellaneous revenue	0.9		1.6
Total revenues	$	237.8	$	197.0

(a)    "Other" primarily includes operation and maintenance service revenues, billing service fees from CRES providers and other miscellaneous retail revenues from contracts with customers.