Organization and Basis of Presentation (Consolidated Variable Interest Entities) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
ASSETS
Cash and cash equivalents	$ 24	$ 26
Restricted cash	64	25
Accounts receivable	1,690	1,632
Securitized regulatory assets	690	758
Total Assets	48,846	44,755	$ 42,683
LIABILITIES
Accounts payable	1,387	1,361
Accrued interest	224	170
Regulatory liabilities — current	181	71
DTE Electric
ASSETS
Cash and cash equivalents	11	15
Restricted cash	48	17
Securitized regulatory assets	690	758
Notes receivable	42	0
Total Assets	35,221	32,185
LIABILITIES
Accrued interest	128	113
Regulatory liabilities — current	156	49
Variable interest entity, primary beneficiary
ASSETS
Cash and cash equivalents	6	7
Restricted cash	64	25
Accounts receivable	27	85
Securitized regulatory assets	690	758
Notes receivable	657	183
Other current and long-term assets	1	4
Total Assets	1,445	1,062
LIABILITIES
Accounts payable	26	59
Accrued interest	12	6
Regulatory liabilities — current	27	8
Securitization bonds	706	769
Other current and long-term liabilities	20	12
Total liabilities	791	854
Notes receivable recorded in Current Assets-Other	14
Current portion of securitization bonds	71	64
Variable interest entity, primary beneficiary | DTE Electric
ASSETS
Cash and cash equivalents	0	0
Restricted cash	48	17
Accounts receivable	6	6
Securitized regulatory assets	690	758
Notes receivable	0	0
Other current and long-term assets	0	1
Total Assets	744	782
LIABILITIES
Accounts payable	0	0
Accrued interest	12	6
Regulatory liabilities — current	27	8
Securitization bonds	706	769
Other current and long-term liabilities	0	0
Total liabilities	745	783
Current portion of securitization bonds	$ 71	$ 64