OTHER CURRENT ASSETS & OTHER CURRENT LIABILITIES - Schedule of Other Current Assets (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Other Current Assets and Other Current Liabilities [Abstract]
Value-added tax receivables	$ 184.8	$ 196.0
Prepaid expenses	115.7	83.5
Withholding tax and other receivables	88.9	96.8
Current financial assets at amortized cost	11.7	9.1
Held-to-maturity investments	0.0	1.3
Other	30.6	27.3
Total other current assets	$ 431.7	$ 414.0