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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - DWR Loan (Details) - DWR Loan - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Government Assistance, Liability [Roll Forward] |  |  |  |
Beginning balance | $ 296 | $ 279 | $ 98 | $ 312
Proceeds received | 368 | 0 | 600 | 0
Ending balance | 651 | 245 | 651 | 245
Other Current Liabilities |  |  |  |
Government Assistance, Liability [Roll Forward] |  |  |  |
Total deduction | (8) | (15) | (20) | (15)
Performance-Based Disbursements |  |  |  |
Government Assistance, Liability [Roll Forward] |  |  |  |
Total deduction | (17) | (19) | (39) | (52)
Loan forgiveness and other adjustments |  |  |  |
Government Assistance, Liability [Roll Forward] |  |  |  |
Total deduction | $ 12 | $ 0 | $ 12 | $ 0

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