Regulatory Matters (Schedule of Regulatory Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ 2,674	$ 2,707
Less amount included in Current Liabilities	(71)	(34)
Regulatory liabilities, noncurrent	2,603	2,673
Refundable federal income taxes
Regulatory Liabilities [Line Items]
Regulatory liabilities	1,823	1,908
Removal costs liability
Regulatory Liabilities [Line Items]
Regulatory liabilities	342	371
Negative other postretirement offset
Regulatory Liabilities [Line Items]
Regulatory liabilities	210	191
Non-service pension and other postretirement costs
Regulatory Liabilities [Line Items]
Regulatory liabilities	199	154
Accrued GCR refund
Regulatory Liabilities [Line Items]
Regulatory liabilities	21	0
Renewable energy
Regulatory Liabilities [Line Items]
Regulatory liabilities	7	21
Other
Regulatory Liabilities [Line Items]
Regulatory liabilities	72	62
DTE Electric
Regulatory Liabilities [Line Items]
Regulatory liabilities	1,759	1,811
Less amount included in Current Liabilities	(49)	(33)
Regulatory liabilities, noncurrent	1,710	1,778
DTE Electric | Refundable federal income taxes
Regulatory Liabilities [Line Items]
Regulatory liabilities	1,463	1,534
DTE Electric | Removal costs liability
Regulatory Liabilities [Line Items]
Regulatory liabilities	0	0
DTE Electric | Negative other postretirement offset
Regulatory Liabilities [Line Items]
Regulatory liabilities	142	128
DTE Electric | Non-service pension and other postretirement costs
Regulatory Liabilities [Line Items]
Regulatory liabilities	84	73
DTE Electric | Accrued GCR refund
Regulatory Liabilities [Line Items]
Regulatory liabilities	0	0
DTE Electric | Renewable energy
Regulatory Liabilities [Line Items]
Regulatory liabilities	7	21
DTE Electric | Other
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ 63	$ 55