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Long-Term Debt | 9 Months Ended
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Sep. 30, 2023
Debt Disclosure [Abstract] |
Long-Term Debt | LONG-TERM DEBT Debt Issuances Refer to the table below for debt issued through September 30, 2023:
Company |  | Month |  | Type |  | Interest Rate |  | Maturity Date |  | Amount
|  |  |  |  |  |  |  |  |  | (In millions)
DTE Electric |  | March |  | Mortgage bonds(a) |  | 5.20% |  | 2033 |  | $ | 600 |
DTE Electric |  | March |  | Mortgage bonds(a) |  | 5.40% |  | 2053 |  | 600 |
DTE Energy |  | March |  | Term loan facility draw(b) |  | Variable |  | 2023 |  | 200 |
DTE Energy |  | May |  | Senior notes(c) |  | 4.875% |  | 2028 |  | 800 |
DTE Electric |  | June |  | Tax-exempt revenue bonds(d) |  | 3.875% |  | 2053 |  | 100 |
|  |  |  |  |  |  |  |  |  | $ | 2,300 |
_______________________________________ (a)Proceeds used for the repayment of short-term borrowings, for capital expenditures, and for other general corporate purposes. (b)Proceeds used for general corporate purposes. (c)Proceeds used for the repayment of amounts outstanding under the term loan facility. (d)Tax-exempt revenue bonds are issued by a public body that loans the proceeds to DTE Electric with terms substantially mirroring the revenue bonds. Proceeds were used to finance costs relating to solid waste disposal facilities at the Monroe and St. Clair power plants. The bonds will be subject to mandatory tender in June 2030. In June 2022, DTE Energy entered into a $1.125 billion unsecured term loan with a maturity date of December 2023. Any borrowings on the loan were determined to be long-term debt, as the term of the facility exceeded one year. Through the first quarter 2023, DTE Energy had drawn $1.0 billion on the term loan, bearing interest at SOFR plus 0.90% per annum. These borrowings were repaid in May and June 2023, as noted in the debt redemptions table below. Unused term loan capacity of $125 million terminated in June 2023 per the terms of the credit agreement. In October 2023, DTE Gas issued $150 million of 5.57% First Mortgage Bonds due October 1, 2030 and $145 million of 5.73% First Mortgage Bonds due October 1, 2035 to a group of institutional investors in a private placement transaction. Proceeds have been used for the repayment of short-term borrowings and for general corporate purposes, including capital expenditures. In November 2023, DTE Electric issued Securitization bonds of $602 million, including two separate tranches of $301 million. The first tranche was issued with an interest rate of 5.97% and a final maturity date of March 1, 2033. Principal payments will be due semi-annually beginning September 2024, with the final payment scheduled for March 2032. The second tranche was issued with an interest rate of 6.09% and a final maturity date of September 1, 2038. Payments will be due semi-annually beginning March 2032, with the final payment scheduled for September 2037. The Securitization bonds were issued in alignment with Green Bond principles to support the closure and recovery of St. Clair and Trenton Channel generation plants and DTE Electric's transition to cleaner energy. Proceeds from the bonds were used to reimburse DTE Electric for qualified costs incurred for the net book value of the St. Clair and Trenton Channel plants and other qualified costs. The securitization financing order from the MPSC required that the net proceeds be subsequently applied by DTE Electric to retire existing debt or equity. Accordingly in the fourth quarter 2023, DTE Electric plans to use proceeds of approximately $300 million towards the retirement of debt and approximately $300 million to issue a special dividend to DTE Energy. Refer to Note 5 to the Consolidated Financial Statements, "Regulatory Matters," for additional information. Debt Redemptions Refer to the table below for debt redeemed through September 30, 2023:
Company |  | Month |  | Type |  | Interest Rate |  | Maturity Date |  | Amount
|  |  |  |  |  |  |  |  |  | (In millions)
DTE Gas |  | April |  | Senior notes |  | 6.44% |  | 2023 |  | $ | 25 |
DTE Energy |  | May |  | Term loan facility |  | Variable |  | 2023 |  | 800 |
DTE Electric |  | June |  | Securitization bonds |  | 2.64% |  | 2023 |  | 19 |
DTE Energy |  | June |  | Term loan facility |  | Variable |  | 2023 |  | 200 |
DTE Electric |  | September |  | Mortgage bonds |  | 4.31% |  | 2023 |  | 102 |
|  |  |  |  |  |  |  |  |  | $ | 1,146 |
In October 2023, DTE Electric redeemed at maturity its $100 million 2005 Series C 5.19% Senior Notes.

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