Revenue (Tables)

3 Months Ended

Mar. 31, 2018

Disaggregation of Revenue [Table Text Block]

. The following table presents our revenue from contracts with customers and other revenue by segment during the period ended March 31, 2018:

$ in millions	T&D			Generation				Other		Adjustments and Eliminations			Total
Retail Revenue
Retail revenue from contracts with customers	$	161.2		$	—			$	—	$	(0.2	)	$	161.0
Other retail revenues (a)	9.2		—	—			—	—		—			9.2
Wholesale Revenue
Wholesale revenue from contracts with customers	12.6			72.2				—		—			84.8
Derivative losses (b)	—			(6.3		)		—		—			(6.3		)
RTO revenue	11.1			1.8				—		—			12.9
RTO capacity revenues	1.9			27.3				—		—			29.2
Other revenues from contracts with customers (c)	—			—				2.4		—			2.4
Other revenues	—			—				0.6		(0.6		)	—
Total revenues	$	196.0		$	95.0			$	3.0	$	(0.8	)	$	293.2

(a) Other retail revenue primarily includes alternative revenue programs not accounted for under ASC 606. Accounts receivable balances associated with these revenues were $3.1 million as of March 31, 2018.

(b) Derivative gains and losses are not accounted for under ASC 606. As of March 31, 2018, accounts receivable balances associated with derivatives were $1.7 million.

(c) Other revenues 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 during the period ended March 31, 2018:

$ in millions	DP&L Total
Retail Revenue
Retail revenue from contracts with customers	$	161.2
Other retail revenues (a)	9.2
Wholesale Revenue
Wholesale revenue from contracts with customers	12.6
RTO revenue	11.1
RTO capacity revenues	1.9
Total revenues	$	196.0

(a) Other retail revenue primarily includes alternative revenue programs not accounted for under ASC 606. Accounts receivable balances associated with these revenues were $3.1 million as of March 31, 2018.