Organization and Basis of Presentation (Consolidated Variable Interest Entities) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
ASSETS
Cash and cash equivalents	$ 30	$ 33
Restricted cash	11	10
Securitized regulatory assets	188	206
Total Assets	42,921	42,683
LIABILITIES
Short-term borrowings	528	1,162
DTE Electric
ASSETS
Cash and cash equivalents	8	15
Restricted cash	10	9
Securitized regulatory assets	188	206
Total Assets	31,139	30,236
Variable interest entity, primary beneficiary
ASSETS
Cash and cash equivalents	8	14
Restricted cash	9	9
Securitized regulatory assets	188	206
Notes receivable	82	81
Other current and long-term assets	8	14
Total Assets	295	324
LIABILITIES
Short-term borrowings	0	81
Securitization bonds	193	211
Other current and long-term liabilities	11	14
Total liabilities	204	306
Current portion of securitization bonds	40	39
Variable interest entity, primary beneficiary | DTE Electric
ASSETS
Cash and cash equivalents	0	0
Restricted cash	9	9
Securitized regulatory assets	188	206
Notes receivable	0	0
Other current and long-term assets	2	3
Total Assets	199	218
LIABILITIES
Short-term borrowings	0	0
Securitization bonds	193	211
Other current and long-term liabilities	8	9
Total liabilities	201	220
Current portion of securitization bonds	$ 40	$ 39