Short-Term Credit Arrangements and Borrowings (Details Textuals)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021	Jun. 30, 2021
DTE Electric
Short-term Debt [Line Items]
Ratio of indebtedness to net capital	0.53
DTE Gas
Short-term Debt [Line Items]
Ratio of indebtedness to net capital	0.46
DTE Energy
Short-term Debt [Line Items]
Ratio of indebtedness to net capital	0.67
DTE Energy | Demand financing agreement
Short-term Debt [Line Items]
Maximum borrowing capacity, financing agreement	$ 250,000,000
Amount outstanding	58,000,000	$ 103,000,000
DTE Energy | Demand financing agreement | Demand financing agreement, indefinite term
Short-term Debt [Line Items]
Maximum borrowing capacity, financing agreement	50,000,000
Maximum additional margin financing	50,000,000
DTE Energy | Demand financing agreement | Demand financing agreement, expiring in 2022
Short-term Debt [Line Items]
Maximum borrowing capacity, financing agreement	$ 150,000,000
Maximum
Short-term Debt [Line Items]
Ratio of indebtedness to net capital			0.70	0.65