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EMPLOYEE BENEFIT PLANS Asset allocations (Details) | Dec. 31, 2020 | Dec. 31, 2019
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United States |  |
Defined Benefit Plan Disclosure |  |
Total investments | 100.00% |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 100.00% |
Foreign Plan [Member] |  |
Defined Benefit Plan Disclosure |  |
Total investments | 100.00% | 100.00%
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 100.00% | 100.00%
Defined Benefit Plan, Equity Securities | United States |  |
Defined Benefit Plan Disclosure |  |
Total investments | 38.60% |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 37.00% |
Defined Benefit Plan, Equity Securities | United States | Minimum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 30.00% |
Defined Benefit Plan, Equity Securities | United States | Maximum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 45.00% |
Defined Benefit Plan, Equity Securities | Foreign Plan [Member] |  |
Defined Benefit Plan Disclosure |  |
Total investments | 38.10% | 40.00%
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 41.00% | 40.00%
Defined Benefit Plan, Equity Securities | Foreign Plan [Member] | Minimum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 25.00% |
Defined Benefit Plan, Equity Securities | Foreign Plan [Member] | Maximum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 48.00% |
US Treasury and Government | United States |  |
Defined Benefit Plan Disclosure |  |
Total investments | 22.20% |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 24.00% |
US Treasury and Government | United States | Minimum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 0.00% |
US Treasury and Government | United States | Maximum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 40.00% |
Corporate Debt Securities | United States |  |
Defined Benefit Plan Disclosure |  |
Total investments | 6.70% |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 8.00% |
Corporate Debt Securities | United States | Minimum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 0.00% |
Corporate Debt Securities | United States | Maximum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 40.00% |
Corporate Debt Securities | Foreign Plan [Member] |  |
Defined Benefit Plan Disclosure |  |
Total investments | 5.90% |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 1.00% |
Corporate Debt Securities | Foreign Plan [Member] | Minimum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 1.00% |
Corporate Debt Securities | Foreign Plan [Member] | Maximum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 37.00% |
Other Debt Obligations | United States |  |
Defined Benefit Plan Disclosure |  |
Total investments | 15.60% |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 14.00% |
Other Debt Obligations | United States | Minimum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 9.00% |
Other Debt Obligations | United States | Maximum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 19.00% |
Other Debt Obligations | Foreign Plan [Member] |  |
Defined Benefit Plan Disclosure |  |
Total investments | 40.60% |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 44.00% |
Other Debt Obligations | Foreign Plan [Member] | Minimum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 26.00% |
Other Debt Obligations | Foreign Plan [Member] | Maximum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 65.00% |
Defined Benefit Plan, Debt Security | United States |  |
Defined Benefit Plan Disclosure |  |
Total investments | 44.50% |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 46.00% |
Defined Benefit Plan, Debt Security | Foreign Plan [Member] |  |
Defined Benefit Plan Disclosure |  |
Total investments | 46.50% |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 45.00% |
Real Estate Funds | United States |  |
Defined Benefit Plan Disclosure |  |
Total investments | 14.80% |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 16.00% |
Real Estate Funds | United States | Minimum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 9.00% |
Real Estate Funds | United States | Maximum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 23.00% |
Real Estate Funds | Foreign Plan [Member] |  |
Defined Benefit Plan Disclosure |  |
Total investments | 4.80% |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 6.00% |
Real Estate Funds | Foreign Plan [Member] | Minimum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 2.00% |
Real Estate Funds | Foreign Plan [Member] | Maximum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 8.00% |
Other Investments [Member] |  |
Defined Benefit Plan Disclosure |  |
Total investments |  | 15.20%
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities |  | 15.00%
Other Investments [Member] | United States |  |
Defined Benefit Plan Disclosure |  |
Total investments | 2.10% |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 1.00% |
Other Investments [Member] | United States | Minimum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 0.00% |
Other Investments [Member] | United States | Maximum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 5.00% |
Other Investments [Member] | Foreign Plan [Member] |  |
Defined Benefit Plan Disclosure |  |
Total investments | 5.20% |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 3.00% |
Other Investments [Member] | Foreign Plan [Member] | Minimum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 3.00% |
Other Investments [Member] | Foreign Plan [Member] | Maximum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 12.00% |
Insurance product | Foreign Plan [Member] |  |
Defined Benefit Plan Disclosure |  |
Total investments | 5.40% |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 5.00% |
Insurance product | Foreign Plan [Member] | Minimum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 5.00% |
Insurance product | Foreign Plan [Member] | Maximum [Member] |  |
Defined Benefit Plan Disclosure |  |
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities | 5.00% |
Equity Securities, Canadian | Foreign Plan [Member] |  |
Defined Benefit Plan Disclosure |  |
Total investments |  | 12.50%
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities |  | 12.50%
Defined Benefit Plan, Equity Securities, US | Foreign Plan [Member] |  |
Defined Benefit Plan Disclosure |  |
Total investments |  | 5.00%
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities |  | 5.00%
Defined Benefit Plan, Equity Securities, Non-US | Foreign Plan [Member] |  |
Defined Benefit Plan Disclosure |  |
Total investments |  | 22.50%
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities |  | 22.50%
Fixed Income Investments [Member] |  |
Defined Benefit Plan Disclosure |  |
Total investments |  | 44.80%
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities |  | 45.00%

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