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DEBT - Amendment No. 19 Loan Modification Agreement and Refinancing Facility Agreement (Details) - USD ($) $ in Millions |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2025 | Sep. 17, 2025 | Sep. 16, 2025 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2023
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, face amount |  |  |  | $ 29,236 |  |
REFINANCING COSTS |  |  |  | $ 11 | $ 58 | $ 56
Tranche K | Term loans |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, face amount |  | $ 1,686 |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 2.25% | 2.75% | 2.25% |  |
REFINANCING COSTS |  |  |  | $ 3 |  |
Tranche K | Term loans | Forecast |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, quarterly principal payment | $ 9 |  |  |  |  |
Tranche I | Term loans |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, face amount |  | $ 1,857 |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 2.75% |  |

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