OTHER CURRENT ASSETS & OTHER CURRENT LIABILITIES - Schedule of Other Current Assets (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Other Current Assets and Other Current Liabilities [Abstract]
Value-added tax receivables	$ 195.0	$ 185.6
Withholding tax and other receivables	139.0	137.8
Prepaid expenses	98.5	61.9
Current financial assets at amortized cost	91.8	12.4
Assets held for sale	2.6	18.6
Held-to-maturity investments	1.3	15.1
Other	49.0	23.6
Total other current assets	$ 577.2	$ 455.0