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Leases (Tables) | 12 Months Ended
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Dec. 31, 2024
Leases [Abstract] |
Components of Lease Cost and Other Information Related to Leases | The following is a summary of the components of lease cost for the years ended December 31:
| DTE Energy |  | DTE Electric
| 2024 |  | 2023 |  | 2022 |  | 2024 |  | 2023 |  | 2022 |  |
| (In millions)
Operating lease cost | $ | 26 |  |  | $ | 22 |  |  | $ | 18 |  |  | $ | 22 |  |  | $ | 17 |  |  | $ | 12 |  |  |
Finance lease cost: |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of right-of-use assets | 4 |  |  | 7 |  |  | 7 |  |  | 3 |  |  | 6 |  |  | 6 |  |  |
Interest of lease liabilities | 1 |  |  | — |  |  | 1 |  |  | 1 |  |  | — |  |  | — |  |  |
Total finance lease cost | 5 |  |  | 7 |  |  | 8 |  |  | 4 |  |  | 6 |  |  | 6 |  |  |
Variable lease cost | 17 |  |  | 13 |  |  | 9 |  |  | — |  |  | — |  |  | — |  |  |
Short-term lease cost | 18 |  |  | 12 |  |  | 19 |  |  | 10 |  |  | 4 |  |  | 10 |  |  |
| $ | 66 |  |  | $ | 54 |  |  | $ | 54 |  |  | $ | 36 |  |  | $ | 27 |  |  | $ | 28 |  |  |
The following is a summary of other information related to leases for the years ended December 31:
| DTE Energy |  | DTE Electric
| 2024 |  | 2023 |  | 2022 |  | 2024 |  | 2023 |  | 2022
| (In millions)
Supplemental Cash Flows Information |  |  |  |  |  |  |  |  |  |  |
Cash paid for amounts included in the measurement of these liabilities: |  |  |  |  |  |  |  |  |  |  |
Operating cash flows for finance leases | $ | 9 |  |  | $ | 9 |  |  | $ | 8 |  |  | $ | 7 |  |  | $ | 7 |  |  | $ | 7 |
Operating cash flows for operating leases | $ | 19 |  |  | $ | 19 |  |  | $ | 17 |  |  | $ | 15 |  |  | $ | 15 |  |  | $ | 12 |
Right-of-use assets obtained in exchange for lease obligations: |  |  |  |  |  |  |  |  |  |  |
Operating leases | $ | 75 |  |  | $ | 61 |  |  | $ | 5 |  |  | $ | 74 |  |  | $ | 61 |  |  | $ | 2 |
Finance leases | $ | 16 |  |  | $ | 5 |  |  | $ | 3 |  |  | $ | 14 |  |  | $ | 5 |  |  | $ | 1 |
Weighted Average Remaining Lease Term (Years) |  |  |  |  |  |  |  |  |  |  |
Operating leases | 23.3 |  | 18.7 |  | 12.8 |  | 24.8 |  | 19.8 |  | 11.1
Finance leases | 7.4 |  | 8.9 |  | 8.2 |  | 4.0 |  | 4.5 |  | 1.1
Weighted Average Discount Rate |  |  |  |  |  |  |  |  |  |  |
Operating leases | 4.8 | % |  | 4.4 | % |  | 3.7 | % |  | 4.9 | % |  | 4.5 | % |  | 3.4 | %
Finance leases | 4.6 | % |  | 4.0 | % |  | 2.4 | % |  | 5.8 | % |  | 5.4 | % |  | 1.0 | %
Schedule of Maturities of Operating Leases | The Registrants' future minimum lease payments under leases for remaining periods as of December 31, 2024 are as follows:
| DTE Energy |  | DTE Electric
| Operating Leases |  | Finance Leases |  | Operating Leases |  | Finance Leases
| (In millions)
2025 | $ | 22 |  |  | $ | 5 |  |  | $ | 18 |  |  | $ | 4 |
2026 | 22 |  |  | 4 |  |  | 19 |  |  | 3 |
2027 | 22 |  |  | 4 |  |  | 19 |  |  | 3 |
2028 | 20 |  |  | 4 |  |  | 18 |  |  | 3 |
2029 | 16 |  |  | 1 |  |  | 13 |  |  | — |
2030 and thereafter | 264 |  |  | 7 |  |  | 241 |  |  | — |
Total future minimum lease payments | 366 |  |  | 25 |  |  | 328 |  |  | 13 |
Imputed interest | (178) |  |  | (2) |  |  | (168) |  |  | (1) |
Lease liabilities | $ | 188 |  |  | $ | 23 |  |  | $ | 160 |  |  | $ | 12 |
Schedule of Maturities of Finance Leases | The Registrants' future minimum lease payments under leases for remaining periods as of December 31, 2024 are as follows:
| DTE Energy |  | DTE Electric
| Operating Leases |  | Finance Leases |  | Operating Leases |  | Finance Leases
| (In millions)
2025 | $ | 22 |  |  | $ | 5 |  |  | $ | 18 |  |  | $ | 4 |
2026 | 22 |  |  | 4 |  |  | 19 |  |  | 3 |
2027 | 22 |  |  | 4 |  |  | 19 |  |  | 3 |
2028 | 20 |  |  | 4 |  |  | 18 |  |  | 3 |
2029 | 16 |  |  | 1 |  |  | 13 |  |  | — |
2030 and thereafter | 264 |  |  | 7 |  |  | 241 |  |  | — |
Total future minimum lease payments | 366 |  |  | 25 |  |  | 328 |  |  | 13 |
Imputed interest | (178) |  |  | (2) |  |  | (168) |  |  | (1) |
Lease liabilities | $ | 188 |  |  | $ | 23 |  |  | $ | 160 |  |  | $ | 12 |
Schedule of Finance Leases Reported on Consolidated Statement of Financial Position | Finance leases reported on the Consolidated Statements of Financial Position of the Registrants are as follows for the years ended December 31:
| DTE Energy |  | DTE Electric
| 2024 |  | 2023 |  | 2024 |  | 2023
| (In millions)
Right-of-use assets, within Property, plant, and equipment, net | $ | 23 |  |  | $ | 18 |  |  | $ | 12 |  |  | $ | 6 |
Current lease liabilities, within Current portion of long-term debt | $ | 5 |  |  | $ | 3 |  |  | $ | 4 |  |  | $ | 2 |
Long-term lease liabilities | $ | 18 |  |  | $ | 13 |  |  | $ | 8 |  |  | $ | 4 |
Schedule of Lease Income Associated with Operating Leases | DTE Energy’s lease income associated with operating leases was included on the Consolidated Statements of Operations for the years ended December 31:
| 2024 |  | 2023 |  | 2022
| (In millions)
Fixed payments | $ | 15 |  |  | $ | 15 |  |  | $ | 15 |
Variable payments | 45 |  |  | 44 |  |  | 67 |
| $ | 60 |  |  | $ | 59 |  |  | $ | 82 |
Schedule of Minimum Future Rental Revenues under Operating Leases | DTE Energy’s minimum future rental revenues under operating leases for remaining periods as of December 31, 2024 are as follows:
| DTE Energy
| (In millions)
2025 | $ | 14 |
2026 | 11 |
2027 | 10 |
2028 | 6 |
2029 | 6 |
2030 and thereafter | 29 |
| $ | 76 |
Schedule of Property under Operating Leases | The following is a summary of property under operating leases for DTE Energy as of December 31:
| 2024 |  | 2023
| (In millions)
Gross property under operating leases | $ | 227 |  |  | $ | 228 |
Accumulated amortization of property under operating leases | $ | 118 |  |  | $ | 118 |

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