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MARKETABLE SECURITIES - Fair Value Measurement (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Debt and Equity Securities, FV-NI [Line Items]    
Total Marketable Securities $ 320.3 $ 341.2
Level 1    
Debt and Equity Securities, FV-NI [Line Items]    
Total Marketable Securities 173.1 190.6
Level 1 | Mutual Funds and Equities    
Debt and Equity Securities, FV-NI [Line Items]    
Total Marketable Securities 163.1 176.9
Level 1 | Money Market Funds    
Debt and Equity Securities, FV-NI [Line Items]    
Total Marketable Securities 10.0 13.7
Level 2    
Debt and Equity Securities, FV-NI [Line Items]    
Total Marketable Securities 147.2 150.6
Level 2 | U.S. Government Issued Debt Securities (Agency and Treasury)    
Debt and Equity Securities, FV-NI [Line Items]    
Total Marketable Securities 92.0 90.1
Level 2 | Corporate Debt Securities    
Debt and Equity Securities, FV-NI [Line Items]    
Total Marketable Securities 32.5 34.0
Level 2 | Asset-Backed Debt Securities    
Debt and Equity Securities, FV-NI [Line Items]    
Total Marketable Securities 7.8 5.6
Level 2 | Municipal Bonds    
Debt and Equity Securities, FV-NI [Line Items]    
Total Marketable Securities 6.8 9.8
Level 2 | Other Fixed Income Securities    
Debt and Equity Securities, FV-NI [Line Items]    
Total Marketable Securities $ 8.1 $ 11.1