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v3.25.3

Short-Term Credit Arrangements and Borrowings (Tables) | 9 Months Ended
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Sep. 30, 2025
Short-Term Debt [Abstract] |
Schedule of Availability Under Credit Facilities | The availability under these facilities as of September 30, 2025 is shown in the following table:
| DTE Energy |  | DTE Electric |  | DTE Gas |  | Total
| (In millions)
Unsecured revolving credit facility, expiring October 2029 | $ | 1,500 |  |  | $ | 800 |  |  | $ | 300 |  |  | $ | 2,600 |
Unsecured letter of credit facility, expiring June 2026(a) | 150 |  |  | — |  |  | — |  |  | 150 |
Unsecured letter of credit facility, expiring February 2027 | 150 |  |  | — |  |  | — |  |  | 150 |
Unsecured letter of credit facility, expiring June 2027 | 100 |  |  | — |  |  | — |  |  | 100 |
Unsecured letter of credit facility(b) | 50 |  |  | — |  |  | — |  |  | 50 |
Unsecured letter of credit facility(c) | — |  |  | 150 |  |  | — |  |  | 150 |
| 1,950 |  |  | 950 |  |  | 300 |  |  | 3,200 |
Amounts outstanding at September 30, 2025 |  |  |  |  |  |  |
Commercial paper issuances | — |  |  | 216 |  |  | — |  |  | 216 |
Letters of credit | 311 |  |  | 133 |  |  | — |  |  | 444 |
| 311 |  |  | 349 |  |  | — |  |  | 660 |
Net availability at September 30, 2025 | $ | 1,639 |  |  | $ | 601 |  |  | $ | 300 |  |  | $ | 2,540 |
_______________________________________ (a)Uncommitted letter of credit facility. (b)Uncommitted letter of credit facility with automatic renewal provision and therefore no expiration. (c)Uncommitted letter of credit facility with automatic renewal provision and therefore no expiration. DTE Energy may also utilize availability under this facility.

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- Definition Tabular disclosure of short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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