Retirement Benefits and Trusteed Assets (Details Textuals) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Annual contributions per employee, percentage	4.00%
Defined contribution plan cost	$ 75,000,000	$ 73,000,000	$ 70,000,000
DTE Electric
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined contribution plan cost	$ 35,000,000	35,000,000	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]
Estimated future employer contributions in next fiscal year	$ 0
Pension cost (credit)	$ (69,000,000)	123,000,000	139,000,000
Expected return on plan assets for next fiscal year	8.00%
Pension plan | DTE Electric
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension funds transferred to (from) plan	$ 50,000,000	50,000,000
Pension cost (credit)	(39,000,000)	101,000,000	107,000,000
Pension plan | DTE Gas
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension funds transferred to (from) plan	(50,000,000)	(50,000,000)
Other postretirement benefit plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension cost (credit)	$ (38,000,000)	(66,000,000)	(59,000,000)
Expected return on plan assets for next fiscal year	7.60%
Retiree health care allowance will increase at lower of the rate of medical inflation or a set percentage	2.00%
Other postretirement benefit plan | DTE Electric
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension cost (credit)	$ (24,000,000)	$ (37,000,000)	$ (31,000,000)