Quarterly report pursuant to Section 13 or 15(d)

RESTRUCTURING CHARGES - Summary of Changes in Restructuring Charges (Details)

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RESTRUCTURING CHARGES - Summary of Changes in Restructuring Charges (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2024
Dec. 31, 2023
Restructuring Reserve [Roll Forward]    
Liability balance as of 12/31/2023 $ 18.3  
Expenses Incurred 0.0 $ 37.6
Cash Payments (13.9)  
Liability balance as of 6/30/2024 4.4 18.3
Severance costs    
Restructuring Reserve [Roll Forward]    
Liability balance as of 12/31/2023 13.4  
Expenses Incurred 0.0  
Cash Payments (9.3)  
Liability balance as of 6/30/2024 4.1 13.4
Contract terminations and other associated costs    
Restructuring Reserve [Roll Forward]    
Liability balance as of 12/31/2023 4.9  
Expenses Incurred 0.0  
Cash Payments (4.6)  
Liability balance as of 6/30/2024 $ 0.3 $ 4.9