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Public Utilities, Recovery Mechanism, Surcharge, Period

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- Definition

Regulatory Liability, Amortization, Estimated Annual Reduction To Expense

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Amount of public utility's approved rate increase (decrease) by regulatory agency.

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Percentage of public utility's approved return on equity.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of disallowed costs for rate making purposes for recently completed plants in regulated industries.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
-SubTopic 360
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 10.E)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479960/980-360-S99-2

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-Name Accounting Standards Codification
-Topic 980
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-Section 35
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481680/980-360-35-12

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- Definition

Amount of public utility's requested rate increase (decrease) with regulatory agency.

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Percentage of public utility's requested return on equity.

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- Definition

The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.

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-Topic 980
-SubTopic 405
-Name Accounting Standards Codification
-Section 25
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481854/980-405-25-1

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Amortization period for the recovery of regulatory liability, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Regulatory Matters (2023 Electric Rate Case Filing) (Details) - USD ($) $ in Millions			12 Months Ended
	Dec. 01, 2023	Feb. 10, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Public Utilities, General Disclosures [Line Items]
Regulatory liability					$ 2,674	$ 2,707
Other postretirement costs
Public Utilities, General Disclosures [Line Items]
Regulatory liability					210	191
DTE Electric
Public Utilities, General Disclosures [Line Items]
Regulatory liability					1,759	1,811
DTE Electric \| Other postretirement costs
Public Utilities, General Disclosures [Line Items]
Regulatory liability					$ 142	$ 128
Amortization period for regulatory liability	7 years
MPSC \| DTE Electric
Public Utilities, General Disclosures [Line Items]
Approved return on equity, percent					9.90%
2023 DTE Electric Rate Case Filing \| MPSC \| DTE Electric
Public Utilities, General Disclosures [Line Items]
Requested rate increase		$ 622
Approved return on equity, percent	9.90%	9.90%
Requested return on equity, percent		10.25%
Approved revenue increase	$ 368
Estimated reduction to Operations and maintenance expense for regulatory liability amortization	18
Disallowed capital expenditures	$ 25
2023 DTE Electric Rate Case Filing \| MPSC \| DTE Electric \| Other postretirement costs
Public Utilities, General Disclosures [Line Items]
Amortization period for regulatory liability	7 years
2023 DTE Electric Rate Case Filing \| MPSC \| DTE Electric \| Recovery Mechanism, Infrastructure Recovery
Public Utilities, General Disclosures [Line Items]
Recovery mechanism surcharge period	2 years
2023 DTE Electric Rate Case Filing \| MPSC \| DTE Electric \| Recovery Mechanism, Infrastructure Recovery \| Forecast
Public Utilities, General Disclosures [Line Items]
Recovery mechanism surcharge, expected annual revenue increase			$ 25	$ 4