Property, Plant, and Equipment (Details Textuals)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Minimum | Non-utility
Public Utility Property, Plant, and Equipment [Line Items]
Estimated useful lives (in years)	3 years
Minimum | Capitalized software
Public Utility Property, Plant, and Equipment [Line Items]
Estimated useful lives (in years)	3 years
Maximum | Non-utility
Public Utility Property, Plant, and Equipment [Line Items]
Estimated useful lives (in years)	50 years
Maximum | Capitalized software
Public Utility Property, Plant, and Equipment [Line Items]
Estimated useful lives (in years)	15 years
DTE Electric | Minimum | Other
Public Utility Property, Plant, and Equipment [Line Items]
Estimated useful lives (in years)	3 years
DTE Electric | Minimum | Capitalized software
Public Utility Property, Plant, and Equipment [Line Items]
Estimated useful lives (in years)	3 years
DTE Electric | Maximum | Other
Public Utility Property, Plant, and Equipment [Line Items]
Estimated useful lives (in years)	45 years
DTE Electric | Maximum | Capitalized software
Public Utility Property, Plant, and Equipment [Line Items]
Estimated useful lives (in years)	15 years
DTE Gas | Minimum | Other
Public Utility Property, Plant, and Equipment [Line Items]
Estimated useful lives (in years)	3 years
DTE Gas | Maximum | Other
Public Utility Property, Plant, and Equipment [Line Items]
Estimated useful lives (in years)	39 years
DTE Electric
Public Utility Property, Plant, and Equipment [Line Items]
Composite depreciation rate for plants in service	3.60%	4.20%	4.40%
DTE Gas
Public Utility Property, Plant, and Equipment [Line Items]
Composite depreciation rate for plants in service	2.80%	2.90%	2.90%