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RESTRUCTURING CHARGES (Details 2) - USD ($) $ in Millions | 3 Months Ended | 96 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Accrued restructuring costs | $ 17.5 | $ 49.1 | $ 17.5 | $ 27.5 | $ 13.6
Restructuring charges | 8.3 | 60.9 | 201.5 |  |
Amounts utilized | (18.3) | (25.4) |  |  |
Employee severance and related benefit costs |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Accrued restructuring costs | 4.1 | 8.7 | 4.1 | 10.8 | 9.4
Restructuring charges | 0.0 | 0.0 | 17.9 |  |
Amounts utilized | (6.7) | (0.7) |  |  |
Lease and other contract termination costs |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Accrued restructuring costs | 13.4 | 40.4 | 13.4 | 16.7 | 4.2
Restructuring charges | 0.0 | 39.7 | 35.5 |  |
Amounts utilized | (3.3) | (3.5) |  |  |
Facility exit costs |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Accrued restructuring costs | 0.0 | 0.0 | 0.0 | 0.0 | 0.0
Restructuring charges | 8.3 | 8.4 | 68.2 |  |
Amounts utilized | (8.3) | (8.4) |  |  |
Write-off of equipment and facility |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Accrued restructuring costs | 0.0 | 0.0 | 0.0 | $ 0.0 | $ 0.0
Restructuring charges | 0.0 | 12.8 | $ 79.9 |  |
Amounts utilized | $ 0.0 | $ (12.8) |  |  |

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