INVESTMENTS, DEBT AND DERIVATIVES - Reconciliation of level 3 instruments (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure of risk management strategy related to hedge accounting [line items] | |||
| Equity at beginning of period | $ 30 | ||
| Fair value re-measurement of financial instruments recognized in OCI | 8 | $ (11) | $ (16) |
| Equity at end of period | 38 | 30 | |
| Level 3 | |||
| Disclosure of risk management strategy related to hedge accounting [line items] | |||
| Equity at beginning of period | 30 | ||
| Equity at end of period | 38 | 30 | |
| Other investments | |||
| Disclosure of risk management strategy related to hedge accounting [line items] | |||
| Equity at beginning of period | 30 | ||
| Equity at end of period | 38 | 30 | |
| Other investments | Level 3 | |||
| Disclosure of risk management strategy related to hedge accounting [line items] | |||
| Equity at beginning of period | 30 | 41 | |
| Fair value re-measurement of financial instruments recognized in OCI | 8 | (11) | |
| Equity at end of period | $ 38 | $ 30 | $ 41 |