Short-Term Credit Arrangements and Borrowings (Details Textuals)	1 Months Ended	3 Months Ended
	Feb. 17, 2026 USD ($) segment	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)
Short-term Debt [Line Items]
Maximum borrowing capacity		$ 3,900,000,000
Number of debt instruments issued | segment	2
DTE Electric
Short-term Debt [Line Items]
Maximum borrowing capacity		$ 1,600,000,000
Total funded debt to capitalization ratio		0.53
DTE Gas
Short-term Debt [Line Items]
Maximum borrowing capacity		$ 300,000,000
Total funded debt to capitalization ratio		0.48
Maximum | DTE Electric
Short-term Debt [Line Items]
Total funded debt to capitalization ratio		0.65
Maximum | DTE Gas
Short-term Debt [Line Items]
Total funded debt to capitalization ratio		0.65
DTE Energy
Short-term Debt [Line Items]
Maximum borrowing capacity		$ 2,000,000,000
Total funded debt to capitalization ratio		0.67
DTE Energy | Demand financing agreement
Short-term Debt [Line Items]
Maximum borrowing capacity, financing agreement		$ 200,000,000
Amount outstanding		$ 110,000,000	$ 94,000,000
DTE Energy | Maximum
Short-term Debt [Line Items]
Total funded debt to capitalization ratio		0.70
DTE Energy | DTE Energy Revolver | Letters of credit
Short-term Debt [Line Items]
Maximum borrowing capacity		$ 500,000,000
DTE Energy | Unsecured Term Loans, Expiring August 2026 | Letters of credit
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 550,000,000
Repayments of debt		$ 550,000,000