v3.21.1
REVENUE RECOGNITION - Disaggregation of revenue (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Disaggregation of Revenue [Line Items]    
Revenues $ 148.3 $ 941.5
Products and services transferred at point in time    
Disaggregation of Revenue [Line Items]    
Revenues 126.8 851.8
Products and services transferred over time    
Disaggregation of Revenue [Line Items]    
Revenues 21.5 89.7
Admissions    
Disaggregation of Revenue [Line Items]    
Revenues 69.5 568.0
Food and beverage    
Disaggregation of Revenue [Line Items]    
Revenues 50.1 288.1
Other theatre    
Disaggregation of Revenue [Line Items]    
Revenues 28.7 85.4
Screen advertising    
Disaggregation of Revenue [Line Items]    
Revenues 16.9 29.7
Other theatre    
Disaggregation of Revenue [Line Items]    
Revenues $ 11.8 $ 55.7