RETIREMENT BENEFITS PLANS - Defined Contribution Plans (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Retirement Benefits [Abstract] | |||
| Employer contributions to defined contribution plans | $ 239 | $ 220 | $ 201 |