Asset Retirement Obligations (Details Textuals) - USD ($)	3 Months Ended
	Sep. 30, 2025	Dec. 31, 2025
Fermi 2
Asset Retirement Obligations [Line Items]
Nuclear decommissioning liabilities funded through surcharge and included in ARO balance		$ 3,100,000,000
Liabilities balance upon completion of decommissioning		$ 0
Fermi 1 | Nuclear decommissioning trusts | DTE Electric
Asset Retirement Obligations [Line Items]
Revision in cash flow incurred	$ 47,000,000