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v3.23.3

Commitments and Contingencies (Details Textuals) | 1 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) employee site facility | Dec. 31, 2022 USD ($)
Loss Contingencies [Line Items] |  |  |
Estimated capital expenditures for current fiscal year |  | $ 4,200,000,000 |
Workforce subject to collective bargaining arrangements | Labor force concentration risk |  |  |
Loss Contingencies [Line Items] |  |  |
Number of employees | employee |  | 4,950 |
Percentage of total employees |  | 49.00% |
Workforce subject to collective bargaining arrangements expiring within one year | Labor force concentration risk |  |  |
Loss Contingencies [Line Items] |  |  |
Percentage of total employees |  | 1.00% |
Reduced emissions fuel guarantees |  |  |
Loss Contingencies [Line Items] |  |  |
Number of days after expiration of statutes of limitations |  | 90 days |
Maximum potential liability |  | $ 414,000,000 |
Other guarantees |  |  |
Loss Contingencies [Line Items] |  |  |
Maximum potential liability |  | 40,000,000 |
Performance surety bonds |  |  |
Loss Contingencies [Line Items] |  |  |
Performance bonds outstanding |  | 325,000,000 |
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 | $ 10,000,000
Number of permitted engineered ash storage facilities owned | facility |  | 3 |
Estimated capital expenditures for current fiscal year |  | $ 3,200,000,000 |
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 |  | 57.00% |
DTE Electric | Workforce subject to collective bargaining arrangements expiring within one year | Labor force concentration risk |  |  |
Loss Contingencies [Line Items] |  |  |
Percentage of total employees |  | 1.00% |
DTE Electric | Performance surety bonds |  |  |
Loss Contingencies [Line Items] |  |  |
Performance bonds outstanding |  | $ 151,000,000 |
DTE Electric | Coal Combustion Residual And Effluent Limitations Guidelines Rules |  |  |
Loss Contingencies [Line Items] |  |  |
Estimated impact of the CCR and ELG rules |  | 481,000,000 |
Estimated impact of the CCR and ELG rules through 2027 |  | $ 343,000,000 |
DTE Gas |  |  |
Loss Contingencies [Line Items] |  |  |
Number of former MGP sites | site |  | 14 |
Accrued for remediation |  | $ 20,000,000 | $ 23,000,000
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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