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v3.24.1.u1

Commitments and Contingencies (Details) | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 USD ($) | Mar. 31, 2024 USD ($) employee facility site | Dec. 31, 2023 USD ($)
Loss Contingencies [Line Items] |  |  |
Estimated capital expenditures for current fiscal year |  | $ 4,700,000,000 |
Workforce subject to collective bargaining arrangements | Labor force concentration risk |  |  |
Loss Contingencies [Line Items] |  |  |
Number of employees | employee |  | 4,900 |
Percentage of total employees |  | 51.00% |
Workforce subject to collective bargaining arrangements expiring within one year | Labor force concentration risk |  |  |
Loss Contingencies [Line Items] |  |  |
Percentage of total employees |  | 8.00% |
Reduced emissions fuel guarantees |  |  |
Loss Contingencies [Line Items] |  |  |
Number of days after expiration of statutes of limitations |  | 90 days |
Maximum potential liability |  | $ 392,000,000 |
Other guarantees |  |  |
Loss Contingencies [Line Items] |  |  |
Maximum potential liability |  | 44,000,000 |
Performance surety bonds |  |  |
Loss Contingencies [Line Items] |  |  |
Performance bonds outstanding |  | 334,000,000 |
Performance surety bonds | Energy Trading |  |  |
Loss Contingencies [Line Items] |  |  |
Performance bonds outstanding |  | $ 130,000,000 |
Performance surety bonds | Minimum | Energy Trading |  |  |
Loss Contingencies [Line Items] |  |  |
Performance bonds term |  | 1 year |
Performance surety bonds | Maximum | Energy Trading |  |  |
Loss Contingencies [Line Items] |  |  |
Performance bonds term |  | 3 years |
DTE Electric |  |  |
Loss Contingencies [Line Items] |  |  |
Environmental capital expenditures |  | $ 2,400,000,000 |
Estimated environmental capital expenditures |  | $ 0 |
Number of former MGP sites | site |  | 3 |
Accrued for remediation |  | $ 9,000,000 | $ 9,000,000
Number of permitted engineered ash storage facilities owned | facility |  | 3 |
Estimated capital expenditures for current fiscal year |  | $ 3,400,000,000 |
DTE Electric | Ludington Plant Contract Dispute | Pending litigation |  |  |
Loss Contingencies [Line Items] |  |  |
Damages sought, percentage liable | 49.00% |  |
DTE Electric | Workforce subject to collective bargaining arrangements | Labor force concentration risk |  |  |
Loss Contingencies [Line Items] |  |  |
Number of employees | employee |  | 2,550 |
Percentage of total employees |  | 59.00% |
DTE Electric | Workforce subject to collective bargaining arrangements expiring within one year | Labor force concentration risk |  |  |
Loss Contingencies [Line Items] |  |  |
Percentage of total employees |  | 8.00% |
DTE Electric | Performance surety bonds |  |  |
Loss Contingencies [Line Items] |  |  |
Performance bonds outstanding |  | $ 159,000,000 |
DTE Electric | EPA Regulations and Clean Water Act Section 316(b), capital expenditures |  |  |
Loss Contingencies [Line Items] |  |  |
Estimated impact of the environmental rules |  | 81,000,000 |
Estimated impact of the environmental rules through 2028 |  | 54,000,000 |
DTE Electric | Coal Combustion Residual and Effluent Limitations Guidelines Rules, capital expenditures |  |  |
Loss Contingencies [Line Items] |  |  |
Estimated impact of the environmental rules |  | 412,000,000 |
Estimated impact of the environmental rules through 2028 |  | $ 403,000,000 |
DTE Gas |  |  |
Loss Contingencies [Line Items] |  |  |
Number of former MGP sites | site |  | 14 |
Accrued for remediation |  | $ 26,000,000 | $ 26,000,000
Amortization period (in years) |  | 10 years |
DTE Gas | Clean up completed and site closed |  |  |
Loss Contingencies [Line Items] |  |  |
Number of former MGP sites | site |  | 8 |
DTE Gas | Partial closure complete |  |  |
Loss Contingencies [Line Items] |  |  |
Number of former MGP sites | site |  | 4 |
TAES and Toshiba Corporation | Ludington Plant Contract Dispute | DTE Electric and Consumers | Pending litigation |  |  |
Loss Contingencies [Line Items] |  |  |
Damages sought | $ 15,000,000 |  |

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