Loss Contingency, Estimated Recovery Challenged, Amount

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- Definition

Public Utilities, Interim Rate Increase (Decrease), Amount Self-Implemented Base Rate Increase

+ References

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- Definition

Public Utilities, Property, Plant and Equipment, Generation Facility, Number of Certificates of Necessity Requested for Issuance

+ References

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- Definition

Public Utilities, Property, Plant and Equipment, Generation Facility, Power

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- Definition

Public Utilities, Property, Plant and Equipment, Generation Facility, Right to Amend Cost Estimate, Period Post Filing Date

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- Definition

Amount of regulatory costs not yet approved by the regulatory authority.

+ References

No definition available.

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- Definition

The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

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- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585

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- Definition

Amount of public utility's approved rate increase (decrease) by regulatory agency.

+ References

No definition available.

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- Definition

Percentage of public utility's approved return on equity.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of public utility's requested rate increase (decrease) with regulatory agency.

+ References

No definition available.

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- Definition

Percentage of public utility's requested return on equity.

+ References

No definition available.

+ Details

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Regulatory Matters (Details Textuals) - DTE Electric - MPSC $ in Millions								3 Months Ended
	Sep. 08, 2017 USD ($)	Jul. 31, 2017 USD ($) certificate MW	Jul. 12, 2017 USD ($)	Apr. 19, 2017 USD ($)	Jan. 31, 2017 USD ($)	Aug. 01, 2016 USD ($)	Feb. 01, 2016 USD ($)	Dec. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)
Public Utilities, General Disclosures [Line Items]
Estimated recovery challenged amount									$ 13.0
Estimated recovery disallowed, including interest			$ 16.0
Amount of power associated with natural gas fueled combined cycle generation facility requesting to build \| MW		1,100
Number of certificates of necessity requested to be issued \| certificate		3
Estimated capital costs		$ 989.0
Period post filing with right to amend cost estimate		150 days
Electric Rate Case Filing 2016
Public Utilities, General Disclosures [Line Items]
Requested rate increase							$ 344.0
Self-implemented base rate						$ 245.0
Approved annual revenue change					$ 184.0
Return on equity percent					10.10%
Electric Rate Case Filing 2016 \| Refundable self-implemented rates \| Scenario, Forecast
Public Utilities, General Disclosures [Line Items]
Authorized amount to be refunded to customers								$ 38.5
Electric Rate Case Filing 2017
Public Utilities, General Disclosures [Line Items]
Requested rate increase	$ 125.0			$ 231.0
Return on equity percent				10.10%
Return on equity requested percent				10.50%