RETIREMENT BENEFITS - Discount Rate and Expected Rate of Return (Details) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Defined Benefit Plans and Other Postretirement Benefit Plans | |||
| Expected return on assets during period (as a percent) | 3.00% | 3.00% | |
| Pension and Postretirement Plan | U.S. | |||
| Defined Benefit Plans and Other Postretirement Benefit Plans | |||
| Expected return on assets during period (as a percent) | 6.00% | 5.70% | 5.70% |
| Actual rate of return (as a percent) | 10.64% | 2.55% | 9.83% |
| VEBA Trust | |||
| Defined Benefit Plans and Other Postretirement Benefit Plans | |||
| Expected return on assets during period (as a percent) | 3.00% | ||
| VEBA Trust | U.S. | |||
| Defined Benefit Plans and Other Postretirement Benefit Plans | |||
| Expected return on assets during period (as a percent) | 3.00% | 3.00% | 3.00% |
| Actual rate of return (as a percent) | 5.47% | 6.01% | 5.87% |