v3.19.3.a.u2
FAIR VALUE MEASUREMENTS - Fair value on a recurring basis (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Other long-term assets:    
Derivative asset $ 38.0 $ 55.7
Investment in NCM 239.1 232.4
Significant unobservable inputs (Level 3)    
Other long-term assets:    
Total carrying Value 157.7  
Recurring basis | Total Carrying Value    
Other long-term assets:    
Money market mutual funds 0.6 0.5
Derivative asset 38.0 55.7
Investments measured at net asset value 11.9 9.6
Investment in NCM 0.7  
Total carrying Value 51.2 65.8
Other long-term liabilities:    
Derivative liability 0.5 24.0
Total liabilities at fair value 0.5 24.0
Recurring basis | Quoted prices in active market (Level 1)    
Other long-term assets:    
Money market mutual funds 0.6 0.5
Investment in NCM 0.7  
Total carrying Value 1.3 0.5
Recurring basis | Significant unobservable inputs (Level 3)    
Other long-term assets:    
Derivative asset 38.0 55.7
Total carrying Value 38.0 55.7
Other long-term liabilities:    
Derivative liability 0.5 24.0
Total liabilities at fair value $ 0.5 $ 24.0