BUSINESS OVERVIEW AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) segment tranche	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Significant Accounting Policies [Line Items]
Capitalized cost	$ 30.6
Payment term after customer control	1 year
Period between customer control and payment	1 year
Advertising expenses	$ 27.8	$ 25.2	$ 30.2
Number of tranches in offering period | tranche	4
Span of offering period	24 months
Foreign currency transaction losses	$ 27.7	$ 11.4	$ 11.7
Number of reportable segment | segment	1
Number of operating segments | segment	1
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%