Short-Term Credit Arrangements and Borrowings (Schedule of Borrowings) (Details) $ in Millions	Dec. 31, 2021 USD ($)
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 3,057
Amounts outstanding	1,016
Net availability	2,041
DTE Electric
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	500
Amounts outstanding	153
Net availability	347
DTE Gas
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	300
Amounts outstanding	210
Net availability	90
DTE Energy
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	2,257
Amounts outstanding	653
Net availability	1,604
Revolving credit facility
Line Of Credit Facility [Line Items]
Amounts outstanding	75
Revolving credit facility | DTE Electric
Line Of Credit Facility [Line Items]
Amounts outstanding	0
Revolving credit facility | DTE Gas
Line Of Credit Facility [Line Items]
Amounts outstanding	0
Revolving credit facility | DTE Energy
Line Of Credit Facility [Line Items]
Amounts outstanding	75
Revolving credit facility | Unsecured revolving credit facility, expiring April 2025
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	2,300
Revolving credit facility | Unsecured revolving credit facility, expiring April 2025 | DTE Electric
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	500
Revolving credit facility | Unsecured revolving credit facility, expiring April 2025 | DTE Gas
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	300
Revolving credit facility | Unsecured revolving credit facility, expiring April 2025 | DTE Energy
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	1,500
Revolving credit facility | Unsecured Canadian revolving credit facility, expiring May 2023
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	87
Revolving credit facility | Unsecured Canadian revolving credit facility, expiring May 2023 | DTE Electric
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	0
Revolving credit facility | Unsecured Canadian revolving credit facility, expiring May 2023 | DTE Gas
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	0
Revolving credit facility | Unsecured Canadian revolving credit facility, expiring May 2023 | DTE Energy
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	87
Revolving credit facility | Unsecured revolving credit facility expiring in April 2024
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	102
Revolving credit facility | Unsecured revolving credit facility expiring in April 2024 | DTE Electric
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	22
Revolving credit facility | Unsecured revolving credit facility expiring in April 2024 | DTE Gas
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	13
Revolving credit facility | Unsecured revolving credit facility expiring in April 2024 | DTE Energy
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	67
Unsecured term loan | Unsecured term loan, expiring June 2022
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	400
Unsecured term loan | Unsecured term loan, expiring June 2022 | DTE Electric
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	0
Unsecured term loan | Unsecured term loan, expiring June 2022 | DTE Gas
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	0
Unsecured term loan | Unsecured term loan, expiring June 2022 | DTE Energy
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	400
Letters of credit
Line Of Credit Facility [Line Items]
Amounts outstanding	258
Letters of credit | DTE Electric
Line Of Credit Facility [Line Items]
Amounts outstanding	0
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	258
Letters of credit | Unsecured letter of credit facility, expiring February 2023
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	150
Letters of credit | Unsecured letter of credit facility, expiring February 2023 | 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 2023 | 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 2023 | DTE Energy
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	150
Letters of credit | Unsecured letter of credit facility, expiring July 2023
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	70
Letters of credit | Unsecured letter of credit facility, expiring July 2023 | 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 July 2023 | 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 July 2023 | DTE Energy
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	70
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
Commercial paper issuances
Line Of Credit Facility [Line Items]
Amounts outstanding	683
Commercial paper issuances | DTE Electric
Line Of Credit Facility [Line Items]
Amounts outstanding	153
Commercial paper issuances | DTE Gas
Line Of Credit Facility [Line Items]
Amounts outstanding	210
Commercial paper issuances | DTE Energy
Line Of Credit Facility [Line Items]
Amounts outstanding	$ 320