Property, Plant, and Equipment (Details Textuals) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Public Utility Property, Plant, and Equipment [Line Items]
AFUDC capitalized	$ 34	$ 37
DTE Gas
Public Utility Property, Plant, and Equipment [Line Items]
Disclosure of composite depreciation rate for plants in service	2.60%	2.40%	2.40%
DTE Electric
Public Utility Property, Plant, and Equipment [Line Items]
Disclosure of composite depreciation rate for plants in service	3.50%	3.40%	3.40%
DTE Electric
Public Utility Property, Plant, and Equipment [Line Items]
AFUDC capitalized	$ 31	$ 32
Other | DTE Electric | Minimum
Public Utility Property, Plant, and Equipment [Line Items]
Property plant and equipment, useful life	5 years
Other | DTE Electric | Maximum
Public Utility Property, Plant, and Equipment [Line Items]
Property plant and equipment, useful life	62 years
Transmission and other | DTE Gas | Minimum
Public Utility Property, Plant, and Equipment [Line Items]
Property plant and equipment, useful life	5 years
Transmission and other | DTE Gas | Maximum
Public Utility Property, Plant, and Equipment [Line Items]
Property plant and equipment, useful life	70 years
Non-utility and other | Minimum
Public Utility Property, Plant, and Equipment [Line Items]
Property plant and equipment, useful life	3 years
Non-utility and other | Maximum
Public Utility Property, Plant, and Equipment [Line Items]
Property plant and equipment, useful life	55 years
Computer Software, Intangible Asset | Minimum
Public Utility Property, Plant, and Equipment [Line Items]
Property plant and equipment, useful life	3 years
Computer Software, Intangible Asset | Maximum
Public Utility Property, Plant, and Equipment [Line Items]
Property plant and equipment, useful life	15 years
Computer Software, Intangible Asset | DTE Electric | Minimum
Public Utility Property, Plant, and Equipment [Line Items]
Property plant and equipment, useful life	5 years
Computer Software, Intangible Asset | DTE Electric | Maximum
Public Utility Property, Plant, and Equipment [Line Items]
Property plant and equipment, useful life	15 years