SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Insurance (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Accounting Policies [Abstract] | |||
| Accrued liability for outstanding insurance claims | $ 39 | $ 26 | |
| Employee medical benefit plan expenses | 48 | 32 | $ 25 |
| Medical claims incurred but not reported | $ 4 | $ 3 | |