DEBT - Short-term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2023	Jun. 05, 2023	Mar. 31, 2023
Debt Instrument [Line Items]
Total	$ 373.2		$ 1,350.0
Unamortized discount and issuance costs	0.0		(3.2)
Short-term debt, net	373.2		1,346.8
Significant other observable inputs (level 2)
Debt Instrument [Line Items]
Total	$ 371.1		$ 1,328.2
2024 Notes
Debt Instrument [Line Items]
Annual Interest Rate	3.30%		3.30%
Total	$ 350.0		$ 1,000.0
Short-term debt, net		$ 350.0
2024 Notes | Significant other observable inputs (level 2)
Debt Instrument [Line Items]
Total	$ 347.9		$ 978.2
2024 Convertible Notes
Debt Instrument [Line Items]
Annual Interest Rate	0.25%		0.25%
Total	$ 23.2
Short-term debt, net	23.2
2024 Convertible Notes | Significant other observable inputs (level 2)
Debt Instrument [Line Items]
Total	$ 23.2
2023 Term Loan
Debt Instrument [Line Items]
Annual Interest Rate			3.60%
Total			$ 350.0
2023 Term Loan | Significant other observable inputs (level 2)
Debt Instrument [Line Items]
Total			$ 350.0