Short-Term Credit Arrangements and Borrowings (Details) $ in Millions	Mar. 31, 2024 USD ($)
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	$ 3,175
Amounts outstanding	444
Net availability	2,731
DTE Electric
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	900
Amounts outstanding	268
Net availability	632
DTE Gas
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	300
Amounts outstanding	0
Net availability	300
DTE Energy
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	1,975
Amounts outstanding	176
Net availability	1,799
Letters of credit
Line Of Credit Facility [Line Items]
Amounts outstanding	154
Letters of credit | DTE Electric
Line Of Credit Facility [Line Items]
Amounts outstanding	58
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	96
Commercial paper issuances
Line Of Credit Facility [Line Items]
Amounts outstanding	290
Commercial paper issuances | DTE Electric
Line Of Credit Facility [Line Items]
Amounts outstanding	210
Commercial paper issuances | DTE Gas
Line Of Credit Facility [Line Items]
Amounts outstanding	0
Commercial paper issuances | DTE Energy
Line Of Credit Facility [Line Items]
Amounts outstanding	80
Unsecured revolving credit facility, expiring October 2028 | Revolver borrowings
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	2,600
Unsecured revolving credit facility, expiring October 2028 | Revolver borrowings | DTE Electric
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	800
Unsecured revolving credit facility, expiring October 2028 | Revolver borrowings | DTE Gas
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	300
Unsecured revolving credit facility, expiring October 2028 | Revolver borrowings | DTE Energy
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	1,500
Unsecured letter of credit facility, expiring June 2024 | Letters of credit
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	175
Unsecured letter of credit facility, expiring June 2024 | Letters of credit | DTE Electric
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	0
Unsecured letter of credit facility, expiring June 2024 | Letters of credit | DTE Gas
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	0
Unsecured letter of credit facility, expiring June 2024 | Letters of credit | DTE Energy
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	175
Unsecured letter of credit facility, expiring February 2025 | Letters of credit
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	150
Unsecured letter of credit facility, expiring February 2025 | Letters of credit | DTE Electric
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	0
Unsecured letter of credit facility, expiring February 2025 | Letters of credit | DTE Gas
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	0
Unsecured letter of credit facility, expiring February 2025 | Letters of credit | DTE Energy
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	150
Unsecured letter of credit facilities | Letters of credit
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	150
Unsecured letter of credit facilities | Letters of credit | DTE Electric
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	0
Unsecured letter of credit facilities | Letters of credit | DTE Gas
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	0
Unsecured letter of credit facilities | Letters of credit | DTE Energy
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	150
Unsecured letter of credit facility | Letters of credit
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	100
Unsecured letter of credit facility | Letters of credit | DTE Electric
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	100
Unsecured letter of credit facility | Letters of credit | DTE Gas
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	0
Unsecured letter of credit facility | Letters of credit | DTE Energy
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	$ 0