Organization and Basis of Presentation (Consolidated Variable Interest Entities) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
ASSETS
Cash and cash equivalents		$ 20	$ 26
Restricted cash		67	25
Accounts receivable		1,503	1,632
Securitized regulatory assets		725	758
Total Assets		47,811	44,755
LIABILITIES
Accounts payable		1,307	1,361
DTE Electric
ASSETS
Cash and cash equivalents		8	15
Restricted cash		53	17
Securitized regulatory assets		725	758
Total Assets		33,917	32,185
Variable interest entity, primary beneficiary
ASSETS
Cash and cash equivalents		6	7
Restricted cash		67	25
Accounts receivable		38	85
Securitized regulatory assets		725	758
Notes receivable		595	183
Other current and long-term assets		0	4
Total Assets		1,431	1,062
LIABILITIES
Accounts payable		18	59
Accrued interest		25	6
Securitization bonds		750	769
Other current and long-term liabilities		34	20
Total liabilities		827	854
Notes receivable recorded in Current Assets-Other		11
Current portion of securitization bonds		79	64
Variable interest entity, primary beneficiary | DTE Electric
ASSETS
Cash and cash equivalents		0	0
Restricted cash		53	17
Accounts receivable		8	6
Securitized regulatory assets		725	758
Notes receivable		0	0
Other current and long-term assets		0	1
Total Assets		786	782
LIABILITIES
Accounts payable		0	0
Accrued interest		25	6
Securitization bonds		750	769
Other current and long-term liabilities		16	8
Total liabilities		791	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