Revenue (Tables)

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

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

	Three Months Ended March 31, 2018
	(In millions)
Electric(a)
Residential	$	586
Commercial	429
Industrial	176
Other(b)	14
Total Electric operating revenues(c)	$	1,205
Gas
Gas sales	$	457
End User Transportation	85
Intermediate Transportation	18
Other(d)	(10		)
Total Gas operating revenues(e)	$	550
Other segment operating revenues(f)
Gas Storage and Pipelines	$	119
Power and Industrial Projects	$	567
Energy Trading	$	1,498

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

(b) Includes a reduction of $39 million in revenues related to TCJA rate reduction reserve.

(c) Includes $5 million of other revenues which are outside the scope of Topic 606.

(d) Includes a reduction of $32 million in revenues related to TCJA rate reduction reserve.

(e) Includes a reduction of $3 million under Alternative Revenue Programs and $2 million of other revenues which are both outside the scope of Topic 606.

(f) Includes revenues outside the scope of Topic 606 primarily related to $445 million of contracts accounted for as leases at the Power and Industrial Projects segment and $1.2 billion related to derivatives at the Energy Trading segment.

Contract with Customer, Liability

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	14
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	(16		)
Ending Balance, March 31, 2018	$	54

Remaining Performance Obligation, Expected Timing of Satisfaction

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	$	159	$	6
2019	238		8
2020	168		—
2021	128		—
2022	103		—
2023 and thereafter	351		—
Total	$	1,147	$	14

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	$	23
2019	9
2020	1
2021	5
2022	6
2023 and thereafter	10
	$	54