EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Plan Assets Allocation (Details) |
Dec. 31, 2020 |
Dec. 31, 2019 |
---|---|---|
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS | ||
Percentage of plan assets | 100.00% | 100.00% |
Cash and Cash Equivalents [Member] | ||
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS | ||
Percentage of plan assets | 2.00% | 3.00% |
Debt Securities [Member] | ||
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS | ||
Percentage of plan assets | 36.00% | 38.00% |
Equity Securities [Member] | ||
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS | ||
Percentage of plan assets | 51.00% | 49.00% |
Alternative Funds [Member] | ||
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS | ||
Percentage of plan assets | 11.00% | 10.00% |