Short-Term Credit Arrangements and Borrowings (Schedule of Borrowings) (Details) $ in Millions	Dec. 31, 2024 USD ($)
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 3,200
Amounts outstanding	1,308
Net availability	1,892
DTE Electric
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	925
Amounts outstanding	790
Net availability	135
DTE Gas
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	300
Amounts outstanding	9
Net availability	291
DTE Energy
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	1,975
Amounts outstanding	509
Net availability	1,466
Revolving credit facility | Unsecured revolving credit facility, expiring October 2029
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	2,600
Revolving credit facility | Unsecured revolving credit facility, expiring October 2029 | DTE Electric
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	800
Revolving credit facility | Unsecured revolving credit facility, expiring October 2029 | DTE Gas
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	300
Revolving credit facility | Unsecured revolving credit facility, expiring October 2029 | DTE Energy
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	1,500
Letters of credit
Line Of Credit Facility [Line Items]
Amounts outstanding	241
Letters of credit | DTE Electric
Line Of Credit Facility [Line Items]
Amounts outstanding	124
Letters of credit | DTE Gas
Line Of Credit Facility [Line Items]
Amounts outstanding	0
Letters of credit | DTE Energy
Line Of Credit Facility [Line Items]
Amounts outstanding	117
Letters of credit | Unsecured letter of credit facility, expiring June 2025
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	175
Letters of credit | Unsecured letter of credit facility, expiring June 2025 | DTE Electric
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	0
Letters of credit | Unsecured letter of credit facility, expiring June 2025 | DTE Gas
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	0
Letters of credit | Unsecured letter of credit facility, expiring June 2025 | DTE Energy
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	175
Letters of credit | Unsecured letter of credit facility, expiring February 2025
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	150
Letters of credit | Unsecured letter of credit facility, expiring February 2025 | DTE Electric
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	0
Letters of credit | Unsecured letter of credit facility, expiring February 2025 | DTE Gas
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	0
Letters of credit | Unsecured letter of credit facility, expiring February 2025 | DTE Energy
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	150
Letters of credit | Unsecured letter of credit facilities, expiring June 2026
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	100
Letters of credit | Unsecured letter of credit facilities, expiring June 2026 | DTE Electric
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	0
Letters of credit | Unsecured letter of credit facilities, expiring June 2026 | DTE Gas
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	0
Letters of credit | Unsecured letter of credit facilities, expiring June 2026 | DTE Energy
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	100
Letters of credit | Unsecured letter of credit facility
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	50
Letters of credit | Unsecured letter of credit facility | DTE Electric
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	0
Letters of credit | Unsecured letter of credit facility | DTE Gas
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	0
Letters of credit | Unsecured letter of credit facility | DTE Energy
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	50
Letters of credit | Unsecured letter of credit facility
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	125
Letters of credit | Unsecured letter of credit facility | DTE Electric
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	125
Letters of credit | Unsecured letter of credit facility | DTE Gas
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	0
Letters of credit | Unsecured letter of credit facility | DTE Energy
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	0
Commercial paper issuances
Line Of Credit Facility [Line Items]
Amounts outstanding	1,067
Commercial paper issuances | DTE Electric
Line Of Credit Facility [Line Items]
Amounts outstanding	666
Commercial paper issuances | DTE Gas
Line Of Credit Facility [Line Items]
Amounts outstanding	9
Commercial paper issuances | DTE Energy
Line Of Credit Facility [Line Items]
Amounts outstanding	$ 392