Organization and Basis of Presentation (Consolidated Variable Interest Entities) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Cash and cash equivalents	$ 33	$ 28
Restricted cash	10	7
Securitized regulatory assets	206	0
Total Assets	42,683	39,719	$ 45,496
LIABILITIES
Short-term borrowings	1,162	758
DTE Electric
ASSETS
Cash and cash equivalents	15	9
Restricted cash	9	0
Securitized regulatory assets	206	0
Total Assets	30,236	28,405
Variable interest entity, primary beneficiary
ASSETS
Cash and cash equivalents	14	11
Restricted cash	9	6
Securitized regulatory assets	206	0
Notes receivable	81	70
Other current and long-term assets	14	8
Total Assets	324	95
LIABILITIES
Short-term borrowings	81	75
Securitization bonds	211	0
Other current and long-term liabilities	14	5
Total liabilities	306	80
Current portion of securitization bonds	39
Variable interest entity, primary beneficiary | DTE Electric
ASSETS
Cash and cash equivalents		0
Restricted cash		9
Securitized regulatory assets		206
Notes receivable		0
Other current and long-term assets		3
Total Assets		218
LIABILITIES
Short-term borrowings		0
Securitization bonds		211
Other current and long-term liabilities		9
Total liabilities		$ 220
Current portion of securitization bonds	$ 39