Public Utilities, Approved Depreciation Rate Increase (Decrease), Percentage

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- Definition

Public Utilities, Calculation C Approval, Reduction Of Revenues Due To Tax Cuts And Jobs Act

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Public Utilities, Calculation C Submission, Reduction Of Revenues Due To Tax Cuts And Jobs Act

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- Definition

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

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- Definition

Percentage of public utility's approved return on equity.

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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.

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- Definition

Percentage of public utility's requested return on equity.

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Regulatory Matters (Details Textuals) - USD ($) $ in Millions	Aug. 20, 2019	Jul. 08, 2019	May 02, 2019	Feb. 01, 2019	Dec. 06, 2018	Dec. 05, 2018	Nov. 16, 2018	Jul. 06, 2018
DTE Electric \| MPSC \| Electric Rate Case Filing 2018
Public Utilities, General Disclosures [Line Items]
Requested rate increase				$ 248.6				$ 328.0
Return on equity percent			10.00%					10.00%
Return on equity requested percent								10.50%
Approved rate increase			$ 125.0
DTE Electric \| MPSC \| Electric Rate Case Filing 2019
Public Utilities, General Disclosures [Line Items]
Requested rate increase		$ 351.0
Return on equity percent		10.00%
Return on equity requested percent		10.50%
DTE Electric \| MPSC \| 2016 DTE Electric Depreciation Case Filing
Public Utilities, General Disclosures [Line Items]
Approved composite depreciation rate increase					3.72%	3.06%
DTE Gas
Public Utilities, General Disclosures [Line Items]
Calculation C, reduction of annual revenue requirement, requested							$ 12.0
Calculation C, reduction of annual revenue requirement, approved	$ 13.0