Revenue (Tables)

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

The following table represents a disaggregation of revenue from contracts with customers for the three months ended March 31, 2018, by type of service from each reportable segment:



	For the Three Months Ended March 31, 2018
Revenues by Type of Service	Regulated Distribution		Regulated Transmission		Corporate/Other and Reconciling Adjustments ⁽¹⁾			Total
	(In millions)
Distribution services ⁽²⁾	$	1,281	$	—	$	(12	)	$	1,269
Retail generation	1,040		—		(14		)	1,026
Wholesale sales	123		—		120			243
Transmission ⁽²⁾	—		319		—			319
Other	35		—		—			35
Total revenues from contracts with customers	$	2,479	$	319	$	94		$	2,892
ARP	64		—		—			64
Other non-customer revenue	33		4		(17		)	20
Total revenues	$	2,576	$	323	$	77		$	2,976

⁽¹⁾ Includes eliminations and reconciling adjustments of inter-segment revenues.

⁽²⁾Includes $76 million in reductions to revenue related to amounts subject to refund resulting from the Tax Act ($72 million at Regulated Distribution and $4 million at Regulated Transmission).

The following table represents a disaggregation of the Regulated Distribution segment revenue from contracts with distribution service and retail generation customers for the three months ended March 31, 2018, by class:



	For the Three Months Ended March 31, 2018
Revenues by Customer Class	For the Three Months Ended March 31, 2018
	(In millions)
Residential	$	1,463
Commercial	580
Industrial	254
Other	24
Total Revenues	$	2,321

The following table represents a disaggregation of revenue from contracts with regulated transmission customers for the three months ended March 31, 2018, by transmission owner:



	For the Three Months Ended March 31, 2018
Revenues by Transmission Asset Owner	For the Three Months Ended March 31, 2018
	(In millions)
ATSI	$	159
TrAIL	62
MAIT	31
Other	71
Total Revenues	$	323