Long-Term Debt (Details Textuals) - USD ($)	Oct. 24, 2024	Sep. 30, 2024
Debt Instrument [Line Items]
Face amount issued		$ 4,250,000,000
Senior Notes | Series C 2.53% Senior Notes Due October 1, 2024
Debt Instrument [Line Items]
Face amount issued		$ 675,000,000
Interest rate		2.53%
Senior Notes | Series C 2.53% Senior Notes Due October 1, 2024 | Subsequent Event
Debt Instrument [Line Items]
Face amount issued	$ 675,000,000
Interest rate	2.53%
DTE Gas | Mortgage Bonds | October 2024, First Mortgage Bonds Due November 2034 | Subsequent Event
Debt Instrument [Line Items]
Face amount issued	$ 160,000,000
Interest rate	4.87%
DTE Gas | Mortgage Bonds | October2024 First Mortgage Bonds Due November 2054 | Subsequent Event
Debt Instrument [Line Items]
Face amount issued	$ 160,000,000
Interest rate	5.43%