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EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items] |  |
Number of shares held on behalf of participants (in shares) | 431,744 | 442,239
Market value of the shares held on behalf of participants | $ 33.6 | $ 31.1
United States | Defined Benefit Pension Plans |  |
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items] |  |
Aggregate accumulated benefit obligation | 40.2 | 38.8
Contribution to the plan | $ 2.1 |
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 | $ 336.0 | $ 301.1
Contribution to the plan | $ 8.8 |
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) | 26.00% |
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) | 53.00% |
Foreign Plan | Defined Benefit Pension Plans | Other Investments |  |
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items] |  |
Target asset allocation (as a percent) | 21.00% |

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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://fasb.org/us-gaap/role/ref/legacyRef -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 contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 + 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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