Retirement Benefits and Trusteed Assets (Details Textuals) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Annual contributions per employee, percentage		4.00%
Defined contribution plan cost		$ 73,000,000	$ 70,000,000	$ 73,000,000
DTE Electric
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined contribution plan cost		$ 35,000,000	34,000,000	34,000,000
DTE Gas
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Annual contributions per employee, percentage		8.00%
Pension plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Company contributions		$ 9,000,000	12,000,000
Expected return on plan assets for next fiscal year		7.60%
Pension plan | Qualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Company contributions				92,000,000
Estimated future employer contributions in next fiscal year		$ 0
Pension plan | DTE Electric
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Allocated pension benefit costs		101,000,000	$ 107,000,000	106,000,000
Pension plan | DTE Electric | Qualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension funds transferred to (from) plan		50,000,000
Company contributions				$ 60,000,000
Pension plan | DTE Gas | Qualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension funds transferred to (from) plan		$ (50,000,000)
Pension plan | Maximum | DTE Electric | Qualified Plan | Forecast
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension funds transferred to (from) plan	$ 50,000,000
Pension plan | Maximum | DTE Gas | Qualified Plan | Forecast
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension funds transferred to (from) plan	$ (50,000,000)
Other postretirement benefit plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected return on plan assets for next fiscal year		7.20%
Retiree health care allowance will increase at lower of the rate of medical inflation or a set percentage		2.00%