RESTRUCTURING CHARGES - Summary of Changes in Restructuring Charges (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2024 |
Dec. 31, 2023 |
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| Restructuring Reserve [Roll Forward] | ||
| Liability balance as of 12/31/2023 | $ 18.3 | |
| Expenses Incurred | 0.0 | $ 37.6 |
| Cash Payments | (8.4) | |
| Liability balance as of 3/31/2024 | 9.9 | 18.3 |
| 2023 Restructuring Charges | ||
| Restructuring Reserve [Roll Forward] | ||
| Cash Payments | (28.0) | |
| Severance costs | ||
| Restructuring Reserve [Roll Forward] | ||
| Liability balance as of 12/31/2023 | 13.4 | |
| Expenses Incurred | 0.0 | |
| Cash Payments | (5.1) | |
| Liability balance as of 3/31/2024 | 8.3 | 13.4 |
| Contract terminations and other associated costs | ||
| Restructuring Reserve [Roll Forward] | ||
| Liability balance as of 12/31/2023 | 4.9 | |
| Expenses Incurred | 0.0 | |
| Cash Payments | (3.3) | |
| Liability balance as of 3/31/2024 | $ 1.6 | $ 4.9 |
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- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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