Organization and Basis of Presentation (Details Textuals) customer in Millions	Mar. 31, 2016 USD ($) customer
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Number of electric utility customers \| customer	2.2
Number of gas utility customers \| customer	1.2
Significant Potential Exposure to Loss Due to VIE Long-Term Purchase and Sale Contracts \| $	$ 0
DTE Electric
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Significant Potential Exposure to Loss Due to VIE Long-Term Purchase and Sale Contracts \| $	$ 0

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=64801991&loc=d3e5728-111685

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=64801991&loc=d3e5747-111685

Name:	us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant