Organization and Basis of Presentation (Consolidated Variable Interest Entities) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
ASSETS
Cash and cash equivalents	$ 26	$ 33
Restricted cash	25	10
Accounts receivable	1,632	2,038
Securitized regulatory assets	758	206
Total Assets	44,755	42,683	$ 39,719
LIABILITIES
Accounts payable	1,361	1,604
Short-term borrowings	1,283	1,162
DTE Electric
ASSETS
Cash and cash equivalents	15	15
Restricted cash	17	9
Securitized regulatory assets	758	206
Total Assets	32,185	30,236
Variable interest entity, primary beneficiary
ASSETS
Cash and cash equivalents	7	14
Restricted cash	25	9
Accounts receivable	85	6
Securitized regulatory assets	758	206
Notes receivable	183	81
Other current and long-term assets	4	8
Total Assets	1,062	324
LIABILITIES
Accounts payable	59	3
Short-term borrowings	0	81
Securitization bonds	769	211
Other current and long-term liabilities	26	11
Total liabilities	854	306
Current portion of securitization bonds	64	39
Variable interest entity, primary beneficiary | DTE Electric
ASSETS
Cash and cash equivalents	0	0
Restricted cash	17	9
Accounts receivable	6	3
Securitized regulatory assets	758	206
Notes receivable	0	0
Other current and long-term assets	1	0
Total Assets	782	218
LIABILITIES
Accounts payable	0	0
Short-term borrowings	0	0
Securitization bonds	769	211
Other current and long-term liabilities	14	9
Total liabilities	783	220
Current portion of securitization bonds	$ 64	$ 39