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INCOME TAXES - Narrative (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Tax Credit Carryforward [Line Items] |  |  |  |
Undistributed earnings of foreign subsidiaries indefinitely invested | $ 247,800,000 |  |  |
Deferred tax liability not recognized, amount of unrecognized deferred tax liability, undistributed earnings of foreign subsidiaries | 23,300,000 |  |  |
Tax Cuts and Jobs Act of 2017, transition tax for accumulated foreign earnings | 0 |  |  |
Research and development costs | 33,000,000.0 | $ 32,400,000 |  |
Deferred tax asset related to net operating loss and capital loss and foreign tax credit carryforwards and research and development credit | 339,800,000 |  |  |
Deferred tax asset valuation allowance | 382,700,000 | 379,800,000 |  |
Cash paid (refund received) for income taxes | 62,000,000.0 | (2,500,000) | $ 59,600,000 |
Liability For unrecognized tax benefits | 27,100,000 | 24,600,000 |  |
Unrecognized tax benefits, interest and penalties | 3,100,000 | 2,900,000 |  |
Unrecognized tax benefits that would have affected the effective tax rate | 26,200,000 | 23,800,000 |  |
Unrecognized tax benefits that would impact effective tax rate, income tax penalties and interest accrued | 2,800,000 | 2,600,000 |  |
Income tax, penalties and interest accrued | 1,000,000.0 |  |  |
Unrecognized tax benefits | 41,500,000 | 27,500,000 |  |
Unrecognized tax benefit with no associated liability | 17,500,000 | 5,800,000 |  |
Net benefit effect if uncertain tax positions prevail | 24,000,000.0 | $ 21,700,000 |  |
Tax Cuts and Jobs Act of 2017, reduction in net deferred tax liability |  |  |  | $ 85,100,000
Minimum |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Decrease unrecognized tax benefits is reasonably possible | 0 |  |  |
Increase in unrecognized tax benefits is reasonably possible | 0 |  |  |
Maximum |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Decrease unrecognized tax benefits is reasonably possible | 6,800,000 |  |  |
Increase in unrecognized tax benefits is reasonably possible | 6,800,000 |  |  |
Operating Loss and Capital Loss and Foreign Tax Credit Carryforwards and Research and Development Credit |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Deferred tax asset valuation allowance | 250,300,000 |  |  |
State |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Interest limitation carryover | 3,300,000 |  |  |
Foreign Country |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Operating loss carryforwards | 1,037,500,000 |  |  |
Sate and Foreign |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Research and development costs | 33,000,000.0 |  |  |
Domestic Tax Authority |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Interest limitation carryover | 355,100,000 |  |  |
Expire At Various Times Between 2021 and 2039 | United States Federal |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Operating loss carryforwards | 11,500,000 |  |  |
Expire At Various Times Between 2021 and 2039 | State |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Operating loss carryforwards | 240,100,000 |  |  |
Expire At Various Times Between 2020 and 2039 | Foreign Country |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Operating loss carryforwards | 312,400,000 |  |  |
Net Operating Loss Indefinite Life | Foreign Country |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Operating loss carryforwards | 725,100,000 |  |  |
Capital Loss Indefinite Life | Foreign Country |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Operating loss carryforwards | 16,700,000 |  |  |
Expire in Years 2025 through 2027 | Foreign Country |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Tax credit carryforward | $ 17,400,000 |  |  |

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