v3.24.0.1
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Change in AOCI by component (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Accumulated other comprehensive loss    
Balance at the beginning of the period $ (77.3)  
Balance at the end of period (78.2) $ (77.3)
Accumulated Other Comprehensive Income (Loss)    
Accumulated other comprehensive loss    
Balance at the beginning of the period (77.3) (28.1)
Other comprehensive income (loss) (0.9) (49.2)
Balance at the end of period (78.2) (77.3)
Foreign Currency    
Accumulated other comprehensive loss    
Balance at the beginning of the period (78.8) (19.0)
Other comprehensive income (loss) 1.1 (59.8)
Balance at the end of period (77.7) (78.8)
Pension Benefits    
Accumulated other comprehensive loss    
Balance at the beginning of the period 1.5 (9.1)
Other comprehensive income (loss) (2.0) 10.6
Balance at the end of period $ (0.5) $ 1.5