Contractual interest rate for funds borrowed, under the debt agreement.

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 230
-SubTopic 10
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Long-Term Debt (Schedule of Debt Redeemed) (Details) - USD ($) $ in Millions	1 Months Ended			9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2024	Sep. 30, 2023
Debt Instrument, Redemption [Line Items]
Amount				$ 143	$ 1,146
DTE Electric
Debt Instrument, Redemption [Line Items]
Amount				$ 143	$ 121
DTE Electric \| Mortgage Bonds \| 2013 Series B Mortgage Bonds
Debt Instrument, Redemption [Line Items]
Interest rate			3.65%
Amount			$ 100
DTE Electric \| Securitization Bonds \| 2.64% Securitization Bonds
Debt Instrument, Redemption [Line Items]
Interest rate		2.64%
Amount		$ 19
DTE Electric \| Securitization Bonds \| 5.97% Securitization Bonds Due 2024
Debt Instrument, Redemption [Line Items]
Interest rate	5.97%			5.97%
Amount	$ 24