Organization and Basis of Presentation (Consolidated Variable Interest Entities) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
ASSETS
Cash and cash equivalents	$ 292	$ 26
Restricted cash	57	25
Accounts receivable	1,435	1,632
Securitized regulatory assets	741	758
Total Assets	45,902	44,755
LIABILITIES
Accounts payable	1,098	1,361
DTE Electric
ASSETS
Cash and cash equivalents	195	15
Restricted cash	45	17
Securitized regulatory assets	741	758
Total Assets	32,967	32,185
Variable interest entity, primary beneficiary
ASSETS
Cash and cash equivalents	8	7
Restricted cash	57	25
Accounts receivable	19	85
Securitized regulatory assets	741	758
Notes receivable	544	183
Other current and long-term assets	1	4
Total Assets	1,370	1,062
LIABILITIES
Accounts payable	20	59
Accrued interest	17	6
Securitization bonds	769	769
Other current and long-term liabilities	26	20
Total liabilities	832	854
Notes receivable recorded in Current Assets-Other	10
Current portion of securitization bonds	79	64
Variable interest entity, primary beneficiary | DTE Electric
ASSETS
Cash and cash equivalents	0	0
Restricted cash	45	17
Accounts receivable	7	6
Securitized regulatory assets	741	758
Notes receivable	0	0
Other current and long-term assets	0	1
Total Assets	793	782
LIABILITIES
Accounts payable	0	0
Accrued interest	17	6
Securitization bonds	769	769
Other current and long-term liabilities	11	8
Total liabilities	797	783
Current portion of securitization bonds	79	$ 64
Variable interest entity, primary beneficiary | DTE Vantage
LIABILITIES
Increase in notes receivable due to investments related to a large industrial project	$ 306