PENSION PLANS (Details 6) |
12 Months Ended |
|---|---|
Dec. 31, 2019 | |
| Long-term rate of return assumption by asset class [Abstract] | |
| U.S. equities, minimum (in hundredths) | 9.00% |
| U.S. equities, maximum (in hundredths) | 13.00% |
| Non-U.S. equities, minimum (in hundredths) | 6.00% |
| Non-U.S. equities, maximum (in hundredths) | 11.00% |
| Fixed income/cash, minimum (in hundredths) | 5.00% |
| Fixed income/cash, maximum (in hundredths) | 9.00% |
| Alternative investments, minimum (in hundredths) | 5.00% |
| Alternative investments, maximum (in hundredths) | 15.00% |