Common Stock (Details Textuals) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2013
Class of Stock [Line Items]
Contribution of Common stock to the Pension Plan Value	$ 50
Contribution of Common Stock to Pension Plan Shares	750,075
Contribution of Common Stock to Pension Plans Amount Per Share	$ 66.66

Contribution of Common Stock to Pension Plans Amount Per Share

No definition available.

Name:	dte_ContributionOfCommonStockToPensionPlansAmountPerShare
Namespace Prefix:	dte_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant