INCOME TAXES - Tax Credit and Loss Carryforwards (Details) - USD ($) $ in Millions |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Tax Credit Carryforward [Line Items] | ||
| Tax Loss Carryforwards | $ 1,080 | |
| Tax Credit Carryforwards | 1,404 | |
| Swiss Federal Tax Administration (FTA) | ||
| Tax Credit Carryforward [Line Items] | ||
| Tax Credit Carryforwards | $ 1,300 | |
| 2025-2029 | ||
| Tax Credit Carryforward [Line Items] | ||
| Tax Loss Carryforwards | 525 | |
| Tax Credit Carryforwards | 15 | |
| 2030-2034 | ||
| Tax Credit Carryforward [Line Items] | ||
| Tax Loss Carryforwards | 21 | |
| Tax Credit Carryforwards | 1,375 | |
| 2035-2044 | ||
| Tax Credit Carryforward [Line Items] | ||
| Tax Loss Carryforwards | 77 | |
| Tax Credit Carryforwards | 0 | |
| Indefinite | ||
| Tax Credit Carryforward [Line Items] | ||
| Tax Loss Carryforwards | 457 | |
| Tax Credit Carryforwards | $ 14 |