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PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Weighted-average assumptions used to determine net periodic benefit costs and benefit obligations (Details) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Pension Benefit Plans | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate - for determining net periodic (benefit) cost | 4.25% | 3.56% | 4.04%
Expected rate of return on plan assets - for determining net periodic (benefit) cost | 7.25% | 7.50% | 7.50%
Rate of compensation increase | 0.00% | 0.00% | 0.00%
Discount rate - for determining benefit obligation | 3.16% | 4.25% |
Rate of compensation increase - for determining benefit obligation | 0.00% | 0.00% |
Pension Benefit Plans | Ireland, Germany, and Japan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate - for determining net periodic (benefit) cost | 2.39% | 2.29% | 2.08%
Expected rate of return on plan assets - for determining net periodic (benefit) cost | 3.46% | 3.66% | 3.84%
Rate of compensation increase | 2.89% | 2.87% | 2.64%
Discount rate - for determining benefit obligation | 1.68% | 2.39% |
Rate of compensation increase - for determining benefit obligation | 3.05% | 2.89% |
U.S. Postretirement Benefit Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate - for determining net periodic (benefit) cost | 4.16% | 3.47% | 3.85%
Expected rate of return on plan assets - for determining net periodic (benefit) cost | 0.00% | 0.00% | 0.00%
Rate of compensation increase | 0.00% | 0.00% | 0.00%
Discount rate - for determining benefit obligation | 3.04% | 4.16% |
Rate of compensation increase - for determining benefit obligation | 0.00% | 0.00% |

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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://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -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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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan. + 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 (k)(1) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. + 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 (k)(3) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan. + 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 (k)(2) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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