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COMMITMENTS AND CONTINGENCIES - OTHER LITIGATION (Details) £ in Millions, $ in Millions |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Mar. 30, 2020 GBP (£) | Oct. 31, 2020 GBP (£) | Dec. 31, 2023 USD ($) claim | Dec. 31, 2023 GBP (£) claim | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Feb. 20, 2024 lawsuit
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Equity earnings |  |  | $ 1,481 |  | $ 1,498 | $ 1,343 |  |
RBS Sempra Commodities |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Equity earnings |  |  |  |  |  |  | $ 100 |
Energy Efficiency Program Inquiry fines that reduce revenue |  |  | $ 40 |  |  | $ 50 |  |
Energy Future Holdings Corp. |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Proof of claims | claim |  |  | 28,000 | 28,000 |  |  |  |
Energy Future Holdings Corp. | Subsequent Event |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Number of lawsuits pending | lawsuit |  |  |  |  |  |  |  | 0
HMRC VAT Claim |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Damage awarded |  |  | $ 10 | £ 7.9 |  |  |  |
HMRC VAT Claim | Plaintiffs |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss contingency, costs and interest |  | £ 21.0 | 27 |  |  |  |  |
HMRC VAT Claim | RBS Sempra Commodities |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Damage awarded | £ 45.0 |  | $ 57 |  |  |  |  |

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