Related Party Transactions (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Related Party Transaction [Line Items]
Dividends declared	$ 800,000,000	$ 710,000,000	$ 752,000,000
Dividends paid	752,000,000	685,000,000	791,000,000
DTE Electric
Related Party Transaction [Line Items]
Dividends declared	1,002,000,000	763,000,000	588,000,000
Dividends paid	1,002,000,000	763,000,000	588,000,000
DTE Electric | DTE Energy
Related Party Transaction [Line Items]
Dividends declared	1,002,000,000	763,000,000	588,000,000
Dividends paid	1,002,000,000	763,000,000	588,000,000
Capital contribution from DTE Energy	$ 759,000,000	$ 600,000,000	555,000,000
DTE Electric | Affiliates
Related Party Transaction [Line Items]
Weighted average interest rate	5.60%	4.40%
DTE Electric | DTE Energy Foundation
Related Party Transaction [Line Items]
Charitable contributions to foundation	$ 0	$ 0	2,000,000
DTE Electric | Energy sales
Related Party Transaction [Line Items]
Revenues and Other Income/ Costs	11,000,000	8,000,000	9,000,000
DTE Electric | Other services and interest
Related Party Transaction [Line Items]
Revenues and Other Income/ Costs	3,000,000	0	2,000,000
DTE Electric | Shared capital assets
Related Party Transaction [Line Items]
Revenues and Other Income/ Costs	58,000,000	57,000,000	49,000,000
DTE Electric | Fuel and purchased power
Related Party Transaction [Line Items]
Revenues and Other Income/ Costs	50,000,000	58,000,000	13,000,000
DTE Electric | Other services and interest
Related Party Transaction [Line Items]
Revenues and Other Income/ Costs	2,000,000	1,000,000	0
DTE Electric | Corporate expenses
Related Party Transaction [Line Items]
Revenues and Other Income/ Costs	$ 299,000,000	$ 379,000,000	$ 391,000,000