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v3.25.1

Significant Accounting Policies (Income Taxes) (Details) | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Schedule of Income Taxes [Line Items] |  |
Statutory federal income tax rate | 21.00% | 21.00%
Increase (decrease) due to: |  |
State and local income taxes, net of federal benefit | 4.20% | 4.10%
Investment tax credits | (13.10%) | (3.10%)
Production tax credits | (10.50%) | (8.30%)
TCJA regulatory liability amortization | (4.50%) | (4.90%)
AFUDC equity | (1.50%) | (1.20%)
Other | 0.20% | (1.40%)
Effective Tax Rate | (4.20%) | 6.20%
DTE Electric |  |
Schedule of Income Taxes [Line Items] |  |
Statutory federal income tax rate | 21.00% | 21.00%
Increase (decrease) due to: |  |
State and local income taxes, net of federal benefit | 5.70% | 5.30%
Investment tax credits | (16.60%) | (0.20%)
Production tax credits | (7.00%) | (9.70%)
TCJA regulatory liability amortization | (4.60%) | (5.10%)
AFUDC equity | (1.80%) | (1.50%)
Other | 0.40% | (0.20%)
Effective Tax Rate | (2.90%) | 9.60%

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 231 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-231 + Details
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