v3.26.3
FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities at Fair Value on Recurring Basis (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash, cash equivalents, and restricted cash $ 150.8 $ 157.7
Marketable securities 161.5 162.2
EVE Investment 10.9 15.4
Total 323.2 335.3
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash, cash equivalents, and restricted cash 150.8 157.7
Marketable securities 161.5 162.2
EVE Investment 2.0 4.0
Total 314.3 323.9
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash, cash equivalents, and restricted cash 0.0 0.0
Marketable securities 0.0 0.0
EVE Investment 0.0 0.0
Total 0.0 0.0
Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash, cash equivalents, and restricted cash 0.0 0.0
Marketable securities 0.0 0.0
EVE Investment 8.9 11.4
Total $ 8.9 $ 11.4