Short-Term Credit Arrangements and Borrowings (Details Textuals)	Jun. 30, 2022 USD ($)	May 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021	Jun. 30, 2021
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 2,960,000,000
Letters of credit | Unsecured letter of credit facility, expiring June 2023
Short-term Debt [Line Items]
Maximum borrowing capacity	375,000,000
DTE Electric
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 500,000,000
Ratio of indebtedness to net capital	0.52
DTE Electric | Letters of credit | Unsecured letter of credit facility, expiring June 2023
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 0
DTE Gas
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 300,000,000
Ratio of indebtedness to net capital	0.46
DTE Gas | Letters of credit | Unsecured letter of credit facility, expiring June 2023
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 0
DTE Energy
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 2,160,000,000
Ratio of indebtedness to net capital	0.68
DTE Energy | Demand financing agreement
Short-term Debt [Line Items]
Maximum borrowing capacity, financing agreement	$ 250,000,000
Amount outstanding	237,000,000		$ 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
DTE Energy | Letters of credit | Unsecured letter of credit facility, expiring June 2023
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 375,000,000	$ 70,000,000
Maximum
Short-term Debt [Line Items]
Ratio of indebtedness to net capital				0.70	0.65