Financial and Other Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2026

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Fair Value of Derivative Instruments

The following table presents the fair value of derivative instruments for DTE Energy:

	March 31, 2026				December 31, 2025
	Derivative Assets		Derivative Liabilities		Derivative Assets		Derivative Liabilities
	(In millions)
Derivatives designated as hedging instruments
Interest rate contracts	$	8	$	—	$	3	$	—
Foreign currency exchange contracts	—		(1)		—		(1)
Total derivatives designated as hedging instruments	$	8	$	(1)	$	3	$	(1)
Derivatives not designated as hedging instruments
Commodity contracts
Natural gas	$	289	$	(333)	$	372	$	(329)
Electricity	357		(370)		275		(235)
Environmental & Other	68		(46)		57		(32)
Foreign currency exchange contracts	1		—		—		—
Total derivatives not designated as hedging instruments	$	715	$	(749)	$	704	$	(596)
Current	$	536	$	(556)	$	482	$	(413)
Noncurrent	187		(194)		225		(184)
Total derivatives	$	723	$	(750)	$	707	$	(597)

Schedule of Net Cash Collateral Offsetting Arrangements and Netting Offsets of Derivative Assets

The following table presents net cash collateral offsetting arrangements for DTE Energy:

	March 31, 2026		December 31, 2025
	(In millions)
Cash collateral netted against Derivative assets	$	(18)	$	(35)
Cash collateral netted against Derivative liabilities	44		5
Cash collateral recorded in Accounts receivable(a)	30		20
Cash collateral recorded in Accounts payable(a)	(13)		(28)
Total net cash collateral posted (received)	$	43	$	(38)

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(a)Amounts are recorded net by counterparty.

The following table presents the netting offsets of Derivative assets and liabilities for DTE Energy:

	March 31, 2026						December 31, 2025
	Gross Amounts of Recognized Assets (Liabilities)		Gross Amounts Offset in the Consolidated Statements of Financial Position		Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position		Gross Amounts of Recognized Assets (Liabilities)		Gross Amounts Offset in the Consolidated Statements of Financial Position		Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position
	(In millions)
Derivative assets
Commodity contracts(a)
Natural gas	$	289	$	(170)	$	119	$	372	$	(235)	$	137
Electricity	357		(285)		72		275		(194)		81
Environmental & Other	68		(64)		4		57		(46)		11
Interest rate contracts	8		—		8		3		—		3
Foreign currency exchange contracts	1		—		1		—		—		—
Total derivative assets	$	723	$	(519)	$	204	$	707	$	(475)	$	232
Derivative liabilities
Commodity contracts(a)
Natural gas	$	(333)	$	210	$	(123)	$	(329)	$	227	$	(102)
Electricity	(370)		280		(90)		(235)		186		(49)
Environmental & Other	(46)		55		9		(32)		32		—
Foreign currency exchange contracts	(1)		—		(1)		(1)		—		(1)
Total derivative liabilities	$	(750)	$	545	$	(205)	$	(597)	$	445	$	(152)

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(a)For contracts with a clearing agent, DTE Energy nets all activity across commodities. This can result in some individual commodities having a contra balance.

Schedule of Net Cash Collateral Offsetting Arrangements and Netting Offsets of Derivative Liabilities

The following table presents net cash collateral offsetting arrangements for DTE Energy:

	March 31, 2026		December 31, 2025
	(In millions)
Cash collateral netted against Derivative assets	$	(18)	$	(35)
Cash collateral netted against Derivative liabilities	44		5
Cash collateral recorded in Accounts receivable(a)	30		20
Cash collateral recorded in Accounts payable(a)	(13)		(28)
Total net cash collateral posted (received)	$	43	$	(38)

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(a)Amounts are recorded net by counterparty.

The following table presents the netting offsets of Derivative assets and liabilities for DTE Energy:

	March 31, 2026						December 31, 2025
	Gross Amounts of Recognized Assets (Liabilities)		Gross Amounts Offset in the Consolidated Statements of Financial Position		Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position		Gross Amounts of Recognized Assets (Liabilities)		Gross Amounts Offset in the Consolidated Statements of Financial Position		Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position
	(In millions)
Derivative assets
Commodity contracts(a)
Natural gas	$	289	$	(170)	$	119	$	372	$	(235)	$	137
Electricity	357		(285)		72		275		(194)		81
Environmental & Other	68		(64)		4		57		(46)		11
Interest rate contracts	8		—		8		3		—		3
Foreign currency exchange contracts	1		—		1		—		—		—
Total derivative assets	$	723	$	(519)	$	204	$	707	$	(475)	$	232
Derivative liabilities
Commodity contracts(a)
Natural gas	$	(333)	$	210	$	(123)	$	(329)	$	227	$	(102)
Electricity	(370)		280		(90)		(235)		186		(49)
Environmental & Other	(46)		55		9		(32)		32		—
Foreign currency exchange contracts	(1)		—		(1)		(1)		—		(1)
Total derivative liabilities	$	(750)	$	545	$	(205)	$	(597)	$	445	$	(152)

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(a)For contracts with a clearing agent, DTE Energy nets all activity across commodities. This can result in some individual commodities having a contra balance.

Schedule of Netting Offsets of Derivative Assets and Liabilities Reconciliation to the Statements of Financial Position

The following table presents the netting offsets of Derivative assets and liabilities showing the reconciliation of derivative instruments to DTE Energy's Consolidated Statements of Financial Position:

	March 31, 2026								December 31, 2025
	Derivative Assets				Derivative Liabilities				Derivative Assets				Derivative Liabilities
	Current		Noncurrent		Current		Noncurrent		Current		Noncurrent		Current		Noncurrent
	(In millions)
Total fair value of derivatives	$	536	$	187	$	(556)	$	(194)	$	482	$	225	$	(413)	$	(184)
Counterparty netting	(383)		(118)		383		118		(325)		(115)		325		115
Collateral adjustment	(16)		(2)		29		15		(14)		(21)		2		3
Total derivatives as reported	$	137	$	67	$	(144)	$	(61)	$	143	$	89	$	(86)	$	(66)

Schedule of Effect of Derivatives Not Designated as Hedging Instruments

The effect of derivatives not designated as hedging instruments on DTE Energy's Consolidated Statements of Operations is as follows:

	Location of Gain (Loss) Recognized in Income on Derivatives	Gain (Loss) Recognized in Income on Derivatives for the Three Months Ended March 31,
		2026		2025
		(In millions)
Commodity contracts
Natural gas	Operating Revenues — Non-utility operations	$	(112)	$	94
Natural gas	Fuel, purchased power, gas, and other — non-utility	25		(100)
Electricity	Operating Revenues — Non-utility operations	(53)		45
Environmental & Other	Operating Revenues — Non-utility operations	4		9
Foreign currency exchange contracts	Operating Revenues — Non-utility operations	1		—
Total		$	(135)	$	48

Schedule of Cumulative Gross Volume of Derivative Contracts

The following represents the cumulative gross volume of DTE Energy's derivative contracts outstanding as of March 31, 2026:

Commodity	Number of Units
Natural gas (MMBtu)	2,631,297,631
Electricity (MWh)	48,023,462
Foreign currency exchange ($ CAD)	83,060,811
FTR (MWh)	31,491
Renewable Energy Certificates (MWh)	13,528,697
Carbon emissions (Metric Tons)	817,859
Interest rate contracts ($ USD)	550,000,000