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EMPLOYEE BENEFIT PLANS - Actuarial Assumptions to Determined Funded Status (Details) | Dec. 31, 2020 | Dec. 31, 2019
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United States |  |
Summary of weighted-average actuarial assumptions used in determining funded status |  |
Discount rate (as a percent) | 2.60% | 3.30%
Rate of increase in compensation levels (as a percent) | 3.00% | 3.00%
Foreign |  |
Summary of weighted-average actuarial assumptions used in determining funded status |  |
Discount rate (as a percent) | 1.53% | 2.30%
Rate of increase in compensation levels (as a percent) | 3.11% | 3.11%

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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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