Short-Term Credit Arrangements and Borrowings (Details Textuals)	1 Months Ended
	Feb. 17, 2026 USD ($) segment	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Short-term Debt [Line Items]
Maximum borrowing capacity		$ 3,850,000,000
Weighted average interest rate		3.80%	4.70%
Dividend restriction		$ 2,100,000,000
Retained earnings		5,484,000,000	$ 4,946,000,000
Effective limitations		0
Subsequent Event
Short-term Debt [Line Items]
Number of debt instruments issued | segment	2
DTE Gas
Short-term Debt [Line Items]
Maximum borrowing capacity		$ 300,000,000
Total funded debt to capitalization ratio		0.49
DTE Electric
Short-term Debt [Line Items]
Maximum borrowing capacity		$ 1,475,000,000
Total funded debt to capitalization ratio		0.52
Weighted average interest rate		3.80%	4.70%
Retained earnings		$ 3,465,000,000	$ 3,159,000,000
Maximum | DTE Gas
Short-term Debt [Line Items]
Total funded debt to capitalization ratio		0.65
Maximum | DTE Electric
Short-term Debt [Line Items]
Total funded debt to capitalization ratio		0.65
DTE Energy
Short-term Debt [Line Items]
Maximum borrowing capacity		$ 2,075,000,000
Total funded debt to capitalization ratio		0.66
DTE Energy | Maximum
Short-term Debt [Line Items]
Total funded debt to capitalization ratio		0.70
DTE Energy | Letters of credit | DTE Energy Revolver
Short-term Debt [Line Items]
Maximum borrowing capacity		$ 500,000,000
DTE Energy | Letters of credit | Unsecured Term Loan, Expiring August 2026 | Subsequent Event
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 550,000,000
DTE Energy | Demand financing agreement
Short-term Debt [Line Items]
Maximum borrowing capacity		200,000,000
Amount outstanding		$ 94,000,000	$ 49,000,000