Commitments and Contingencies (Details Textuals)		1 Months Ended		12 Months Ended
	Jul. 23, 2020 USD ($) plant	Jan. 31, 2021	Jun. 30, 2020	Dec. 31, 2020 USD ($) employee site facility plant	Dec. 31, 2019 USD ($)	Jul. 31, 2019 CAD ($)	Jul. 31, 2009 plant
Loss Contingencies [Line Items]
Expected minimum contribution for community based environmental projects	$ 2,000,000
Utility capital expenditures, expenditures for non-utility businesses, and contributions to equity method investees estimated for next year				$ 4,200,000,000
Power and Industrial Projects
Loss Contingencies [Line Items]
Number of generating plants operated with ownership interests held | plant				5
Labor force concentration risk | Workforce subject to collective bargaining arrangements
Loss Contingencies [Line Items]
Approximate number of employees | employee				5,200
Synthetic fuel guarantees
Loss Contingencies [Line Items]
Number of days after expiration of statutes of limitations				90 days
Maximum potential liability				$ 400,000,000
Reduced emissions fuel guarantees
Loss Contingencies [Line Items]
Number of days after expiration of statutes of limitations				90 days
Maximum potential liability				$ 581,000,000
Other guarantees
Loss Contingencies [Line Items]
Maximum potential liability				50,000,000
Performance surety bonds
Loss Contingencies [Line Items]
Performance bonds outstanding				$ 125,000,000
Reduction of Carbon Emissions by 2023
Loss Contingencies [Line Items]
Goal to reduce carbon emissions, percentage				32.00%
Reduction of Carbon Emissions by 2030
Loss Contingencies [Line Items]
Goal to reduce carbon emissions, percentage				50.00%
Reduction of Carbon Emissions by 2040
Loss Contingencies [Line Items]
Goal to reduce carbon emissions, percentage				80.00%
The Sierra Club
Loss Contingencies [Line Items]
Amount accrued for settlement				$ 5,000,000
DTE Gas | NEXUS Pipeline
Loss Contingencies [Line Items]
Maximum potential liability				$ 209,000,000
Guarantee termination, minimum threshold, period following end of primary term of capacity lease agreements				2 months
Texas Eastern Transmission, LP | NEXUS Pipeline
Loss Contingencies [Line Items]
Maximum potential liability				$ 335,000,000
Guarantee termination, minimum threshold, period following end of primary term of capacity lease agreements				2 months
Vector | Revolving Term Credit Facility
Loss Contingencies [Line Items]
Revolving term credit facility amount						$ 70,000,000
Maximum potential payments under line of credit				$ 55,000,000
Vector | NEXUS Pipeline
Loss Contingencies [Line Items]
Maximum potential liability				$ 7,000,000
Percentage of all payment obligations due and payable				50.00%
Guarantee termination, minimum threshold, period following end of primary term of capacity lease agreements				15 years
DTE Electric
Loss Contingencies [Line Items]
Number of power plants allegedly in violation | plant							5
Number of power plants with requirement to retire, repower, refuel or retrofit units | plant	4
Environmental capital expenditures				$ 2,400,000,000
Estimated capital expenditures				$ 0
Number of former MGP sites | site				3
Accrued for remediation related to the sites				$ 10,000,000	$ 8,000,000
Number of permitted engineered coal ash storage facilities owned | facility				3
Utility capital expenditures, expenditures for non-utility businesses, and contributions to equity method investees estimated for next year				$ 3,000,000,000.0
DTE Electric | Labor force concentration risk | Workforce subject to collective bargaining arrangements
Loss Contingencies [Line Items]
Approximate number of employees | employee				2,800
DTE Electric | Performance surety bonds
Loss Contingencies [Line Items]
Performance bonds outstanding				$ 69,000,000
DTE Electric | Reduction of Carbon Emissions by 2050
Loss Contingencies [Line Items]
Goal of net carbon emissions, percentage				0.00%
DTE Electric | CCR and ELG Rules
Loss Contingencies [Line Items]
Estimated impact of the CCR and ELG rules				$ 721,000,000
Estimated impact of the CCR and ELG rules, through 2025				$ 601,000,000
DTE Electric | The Sierra Club
Loss Contingencies [Line Items]
Civil penalty paid	$ 2,000,000
DTE Gas
Loss Contingencies [Line Items]
Number of former MGP sites | site				14
Accrued for remediation related to the sites				$ 24,000,000	$ 25,000,000
Amortization period for MGP costs (in years)				10 years
DTE Gas | Cleanup completed and site closed
Loss Contingencies [Line Items]
Number of former MGP sites | site				8
DTE Gas | Partial closure completed
Loss Contingencies [Line Items]
Number of former MGP sites | site				4
DTE Gas | Reduction of Greenhouse Gas Emissions by 2050
Loss Contingencies [Line Items]
Goal of net greenhouse gas emissions, percentage			0.00%
DTE Midstream | Reduction of Greenhouse Gas Emissions by 2050 | Subsequent Event
Loss Contingencies [Line Items]
Goal of net greenhouse gas emissions, percentage		0.00%
DTE Midstream | Reduction of Carbon Emissions in the next decade | Subsequent Event
Loss Contingencies [Line Items]
Goal to reduce carbon emissions, percentage		30.00%
NEXUS | DTE Gas | NEXUS Pipeline
Loss Contingencies [Line Items]
Capacity lease agreement term				15 years
Percentage of all payment obligations due and payable				50.00%
NEXUS | Texas Eastern Transmission, LP | NEXUS Pipeline
Loss Contingencies [Line Items]
Capacity lease agreement term				15 years
Percentage of all payment obligations due and payable				50.00%
NEXUS | Vector | NEXUS Pipeline
Loss Contingencies [Line Items]
Capacity lease agreement term				15 years