Revenue (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

The following is a summary of revenues disaggregated by segment for DTE Energy:



	Three Months Ended June 30,		Six Months Ended June 30,
	2018		2018
	(In millions)
Electric^(a)
Residential	$	584	$	1,170
Commercial	446		875
Industrial	178		354
Other^(b)	68		82
Total Electric operating revenues^(c)	$	1,276	$	2,481

Gas
Gas sales	$	180	$	637
End User Transportation	49		134
Intermediate Transportation	11		29
Other^(d)	15		5
Total Gas operating revenues^(e)	$	255	$	805

Other segment operating revenues^(f)
Gas Storage and Pipelines	$	122	$	241
Power and Industrial Projects	$	538	$	1,105
Energy Trading	$	1,164	$	2,662

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(a)	Revenues under the Electric segment generally represent those of DTE Electric.


(b)	Includes decreases of $38 million and $77 million to revenues related to TCJA rate reduction reserves for the three and six months ended June 30, 2018, respectively.


(c)	Includes $4 million and $9 million of other revenues which are outside the scope of Topic 606 for the three and six months ended June 30, 2018, respectively.


(d)	Includes an increase of $5 million and a decrease of $27 million to revenues related to TCJA rate reduction reserves for the three and six months ended June 30, 2018, respectively.


(e)	Includes a reduction of $1 million and $4 million under Alternative Revenue Programs for the three and six months ended June 30, 2018, respectively, and $2 million and $4 million of other revenues, which are both outside the scope of Topic 606 for the three and six months ended June 30, 2018, respectively.


(f)	Includes revenues outside the scope of Topic 606 primarily related to $399 million and $844 million of contracts accounted for as leases at the Power and Industrial Projects segment for the three and six months ended June 30, 2018, respectively, and $937 million and $2.1 billion related to derivatives at the Energy Trading segment for the three and six months ended June 30, 2018, respectively.

Summary of Deferred Revenue Activity

The following is a summary of deferred revenue activity:



	DTE Energy
	(In millions)
Beginning Balance, January 1, 2018	$	56
Increases due to cash received or receivable, excluding amounts recognized as revenue during the period	29
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	(18		)
Ending Balance, June 30, 2018	$	67

Deferred Revenue Amounts Expected to be Recognized as Revenue in Future Periods

The Registrants expect to recognize revenue for the following amounts related to fixed consideration associated with remaining performance obligations in each of the future periods noted:



	DTE Energy		DTE Electric
	(In millions)
2018	$	102	$	5
2019	251		8
2020	178		—
2021	135		—
2022	106		—
2023 and thereafter	351		—
Total	$	1,123	$	13

The following table represents deferred revenue amounts for DTE Energy that are expected to be recognized as revenue in future periods:



	DTE Energy
	(In millions)
2018	$	27
2019	14
2020	2
2021	4
2022	7
2023 and thereafter	13
	$	67