Regulatory Matters (2023 Securitization Filing) (Details) $ in Millions	Dec. 31, 2023 USD ($)	Nov. 30, 2023 USD ($)	Nov. 01, 2023 USD ($) tranche	Jun. 22, 2023 USD ($)	Apr. 03, 2023 USD ($)	Dec. 31, 2022 USD ($)
Public Utilities, General Disclosures [Line Items]
Face amount issued	$ 3,197
Securitized regulatory assets	758					$ 206
DTE Electric
Public Utilities, General Disclosures [Line Items]
Securitized regulatory assets	$ 758					$ 206
DTE Electric | Securitization Bonds | November 2023 5.97% Securitization Bonds
Public Utilities, General Disclosures [Line Items]
Face amount issued		$ 301
DTE Electric | Securitization Bonds | November 2023 6.09% Securitization Bonds
Public Utilities, General Disclosures [Line Items]
Face amount issued		$ 301
2023 Securitization Filing | MPSC | DTE Electric
Public Utilities, General Disclosures [Line Items]
Requested securitization of qualified costs					$ 496
Authorized issuance of securitization bonds of qualified costs, maximum				$ 602
Securitized regulatory assets			$ 594
2023 Securitization Filing | MPSC | DTE Electric | Maximum | Securitized regulatory asset, St Clair and Trenton Channel costs, tranche one
Public Utilities, General Disclosures [Line Items]
Amortization period for regulatory asset			10 years
2023 Securitization Filing | MPSC | DTE Electric | Maximum | Securitized regulatory asset, St Clair and Trenton Channel costs, tranche two
Public Utilities, General Disclosures [Line Items]
Amortization period for regulatory asset			15 years
2023 Securitization Filing | MPSC | DTE Electric | Securitization Bonds
Public Utilities, General Disclosures [Line Items]
Face amount issued			$ 602
Number of tranches | tranche			2
2023 Securitization Filing | MPSC | DTE Electric | Securitization Bonds | November 2023 5.97% Securitization Bonds
Public Utilities, General Disclosures [Line Items]
Face amount issued			$ 301
2023 Securitization Filing | MPSC | DTE Electric | Securitization Bonds | November 2023 6.09% Securitization Bonds
Public Utilities, General Disclosures [Line Items]
Face amount issued			$ 301
2023 Securitization Filing | MPSC | DTE Electric | Net book value of on retiring plants
Public Utilities, General Disclosures [Line Items]
Authorized issuance of securitization bonds of qualified costs, maximum				594
2023 Securitization Filing | MPSC | DTE Electric | Other
Public Utilities, General Disclosures [Line Items]
Authorized issuance of securitization bonds of qualified costs, maximum				$ 8