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Transaction Agreement (Details) - USD ($) $ in Millions |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 06, 2023 | Sep. 30, 2023 | Dec. 31, 2023
Business Acquisition, Contingent Consideration [Line Items] |  |  |
Proceeds from issuance of senior long-term debt |  | $ 1,750 |
Debt fees and expenses, recorded as interest expense |  |  | $ 21
Vistra Operations Company LLC |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |
Facility Limit |  |  | $ 7,250
Vistra Operations Company LLC | Acquisition Bridge Facility |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |
Bridge loan | $ 3,000 |  |
Vistra Operations Company LLC | Term Loan B (TLB) Refinancing Bridge Facility |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |
Bridge loan | 2,500 |  |
Vistra Operations Company LLC | Refinancing Commodity-Linked Revolving Credit Facility |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |
Facility Limit | 300 |  |
Transaction Agreement |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |
Business combination, cash consideration value to be transferred | 3,000 |  |
Business combination, estimated aggregate equity value to be transferred | 3,333 |  |
Transaction Agreement | Energy Harbor Corp. | Maximum | Vistra Operations Company LLC |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |
Business combination, transactions expenses to be reimbursed | $ 100 |  |
Vistra Vision | Transaction Agreement |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |
Equity method investment, ownership percentage | 15.00% |  |

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