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

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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Long-Term Debt (Debt Redemptions) (Details) - USD ($) $ in Millions		1 Months Ended				12 Months Ended
	Nov. 01, 2022	Dec. 31, 2022	Nov. 30, 2022	Sep. 30, 2022	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument, Redemption [Line Items]
Amount	$ 1,250					$ 1,587	$ 3,522	$ 882
Senior Notes \| 2.25% Senior Notes
Debt Instrument, Redemption [Line Items]
Interest Rate			2.25%
Amount			$ 500
Senior Notes \| 0.55% Senior Notes
Debt Instrument, Redemption [Line Items]
Interest Rate			0.55%
Amount			$ 750
Securitization Bonds \| 2.64% Securitization Bonds
Debt Instrument, Redemption [Line Items]
Interest Rate		2.64%				2.64%
Amount		$ 21
DTE Electric
Debt Instrument, Redemption [Line Items]
Amount						$ 337	$ 321	$ 632
DTE Electric \| Mortgage Bonds \| 2.65% Mortgage Bonds
Debt Instrument, Redemption [Line Items]
Interest Rate					2.65%
Amount					$ 250
DTE Electric \| Mortgage Bonds \| 6.95% Mortgage Bonds
Debt Instrument, Redemption [Line Items]
Interest Rate				6.95%
Amount				$ 66