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BUSINESS OVERVIEW AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) tranche therapy | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Significant Accounting Policies [Line Items] |  |  |
Number of commercial therapies | therapy | 8 |  |
Capitalized cost | $ 72.1 | $ 30.6 |
Payment term after customer control | 1 year |  |
Period between customer control and payment | 1 year |  |
Advertising expenses | $ 34.5 | 27.8 | $ 25.2
Number of tranches in offering period | tranche | 4 |  |
Span of offering period | 24 months |  |
Foreign currency transaction losses | $ 8.6 | $ 27.7 | $ 11.4
Minimum | ALDURAZYME |  |  |
Significant Accounting Policies [Line Items] |  |  |
Payment received as percentage of net product sales | 39.50% |  |
Maximum | ALDURAZYME |  |  |
Significant Accounting Policies [Line Items] |  |  |
Payment received as percentage of net product sales | 50.00% |  |

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