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

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-Topic 210
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Long-Term Debt (Schedule of Debt Redeemed) (Details) - USD ($) $ in Millions	1 Months Ended		6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2024	Jun. 30, 2023
Debt Instrument, Redemption [Line Items]
Amount			$ 119	$ 1,044
DTE Electric
Debt Instrument, Redemption [Line Items]
Amount			$ 119	$ 19
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%		2.64%
Amount	$ 19