Revenue (Tables)

12 Months Ended

Dec. 31, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

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

	2018
	(In millions)
Electric(a)
Residential	$	2,494
Commercial	1,794
Industrial	690
Other	320
Total Electric operating revenues(b)	$	5,298
Gas
Gas sales	$	1,055
End User Transportation	232
Intermediate Transportation	58
Other	91
Total Gas operating revenues(c)	$	1,436
Other segment operating revenues
Gas Storage and Pipelines	$	485
Power and Industrial Projects(d)	$	2,204
Energy Trading(e)	$	5,557

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

(b) Includes $21 million under Alternative Revenue Programs and $20 million of other revenues, which are both outside the scope of Topic 606 for the year endedDecember 31, 2018.

(c) Includes $2 million under Alternative Revenue Programs and $7 million of other revenues, which are both outside the scope of Topic 606 for the year endedDecember 31, 2018.

(d) Includes revenues outside the scope of Topic 606 primarily related to $125 million of contracts accounted for as leases for the year endedDecember 31, 2018.

(e) Includes revenues outside the scope of Topic 606 primarily related to $4.5 billion of derivatives for the year endedDecember 31, 2018.

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	48
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	(30		)
Ending Balance, December 31, 2018	$	74

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)
2019	$	267	$	8
2020	263		—
2021	219		—
2022	172		—
2023	139		—
2024 and thereafter	658		—
	$	1,718	$	8

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)
2019	$	46
2020	1
2021	5
2022	7
2023	5
2024 and thereafter	10
	$	74