Regulatory Matters (2024 Gas Rate Case Filing) (Details) - MPSC - DTE Gas - USD ($) $ in Millions			12 Months Ended
	Nov. 07, 2024	Jan. 08, 2024	Dec. 31, 2024
Public Utilities, General Disclosures [Line Items]
Approved return on equity, percent			9.80%
2024 DTE Gas Rate Case Filing
Public Utilities, General Disclosures [Line Items]
Requested rate increase		$ 266
Approved return on equity, percent	9.80%	9.90%
Requested return on equity, percent		10.25%
Approved revenue increase	$ 114
2024 DTE Gas Rate Case Filing | Recovery Mechanism, Customer Rate Increase
Public Utilities, General Disclosures [Line Items]
Requested rate increase		$ 160
2024 DTE Gas Rate Case Filing | Recovery Mechanism, Infrastructure Recovery
Public Utilities, General Disclosures [Line Items]
Requested rate increase		$ 106