Regulatory Matters (Schedule of Regulatory Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ 3,037	$ 2,674
Less amount included in Current Liabilities	(181)	(71)
Regulatory liabilities, noncurrent	2,856	2,603
Refundable federal income taxes
Regulatory Liabilities [Line Items]
Regulatory liabilities	1,733	1,823
Removal costs liability
Regulatory Liabilities [Line Items]
Regulatory liabilities	506	342
Non-service pension and other postretirement costs
Regulatory Liabilities [Line Items]
Regulatory liabilities	255	199
Negative other postretirement offset
Regulatory Liabilities [Line Items]
Regulatory liabilities	214	210
Accrued PSCR/GCR refund
Regulatory Liabilities [Line Items]
Regulatory liabilities	136	21
Renewable energy
Regulatory Liabilities [Line Items]
Regulatory liabilities	90	7
Other
Regulatory Liabilities [Line Items]
Regulatory liabilities	103	72
DTE Electric
Regulatory Liabilities [Line Items]
Regulatory liabilities	1,909	1,759
Less amount included in Current Liabilities	(156)	(49)
Regulatory liabilities, noncurrent	1,753	1,710
DTE Electric | Refundable federal income taxes
Regulatory Liabilities [Line Items]
Regulatory liabilities	1,389	1,463
DTE Electric | Removal costs liability
Regulatory Liabilities [Line Items]
Regulatory liabilities	0	0
DTE Electric | Non-service pension and other postretirement costs
Regulatory Liabilities [Line Items]
Regulatory liabilities	94	84
DTE Electric | Negative other postretirement offset
Regulatory Liabilities [Line Items]
Regulatory liabilities	139	142
DTE Electric | Accrued PSCR/GCR refund
Regulatory Liabilities [Line Items]
Regulatory liabilities	111	0
DTE Electric | Renewable energy
Regulatory Liabilities [Line Items]
Regulatory liabilities	90	7
DTE Electric | Other
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ 86	$ 63