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RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2025 | Mar. 31, 2026 | Dec. 31, 2021
Related Party Transaction [Line Items] |  |  |
Outstanding payables | $ (1,018) | $ (1,268) |
Apollo Global Management | Diamond Acquisition |  |  |
Related Party Transaction [Line Items] |  |  |
Interest acquired (more than) |  |  | 20.00%
Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Outstanding payables |  | $ (3) |
Outstanding receivables | 3 |  |
Affiliated Entity |  |  |
Related Party Transaction [Line Items] |  |  |
Reimbursable expenses billed | $ 2 |  |

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