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EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items] |  |
Number of shares held on behalf of participants (in shares) | 409,104 | 431,744
Market value of the shares held on behalf of participants | $ 29.9 | $ 33.6
United States | Defined Benefit Pension Plans |  |
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items] |  |
Aggregate accumulated benefit obligation | $ 41.8 | 40.2
United States | Defined Benefit Pension Plans | Equity security funds |  |
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items] |  |
Target asset allocation (as a percent) | 55.00% |
United States | Defined Benefit Pension Plans | Debt security funds and other |  |
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items] |  |
Target asset allocation (as a percent) | 45.00% |
Foreign Plan | Defined Benefit Pension Plans |  |
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items] |  |
Aggregate accumulated benefit obligation | $ 371.8 | $ 336.0
Contribution to the plan | $ 7.3 |
Foreign Plan | Defined Benefit Pension Plans | Equity security funds |  |
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items] |  |
Target asset allocation (as a percent) | 10.00% |
Foreign Plan | Defined Benefit Pension Plans | Debt security funds and other |  |
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items] |  |
Target asset allocation (as a percent) | 22.00% |
Foreign Plan | Defined Benefit Pension Plans | Other Investments |  |
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items] |  |
Target asset allocation (as a percent) | 68.00% |

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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + 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 (e) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year. + 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 (g) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4587-114921 + Details
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- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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