v3.10.0.1
THE COMPANY AND SIGNIFICANT ACCOUNTING POLICIES (Details)
$ in Millions
9 Months Ended
Jun. 18, 2018
USD ($)
item
Sep. 30, 2018
USD ($)
segment
Dec. 31, 2017
USD ($)
Schedule of Equity Method Investments [Line Items]      
Number of Reportable Segments | segment   2  
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Excluding Capital Leased Assets   $ 1,587.4 $ 1,266.9
Accumulated amortization   68.5 $ 55.5
Leases      
Lease incentive   35.0  
Reduction of rent   $ 35.0  
Sale and Leaseback Transaction      
Number of Theatres Sold | item 1    
Net proceeds $ 50.1    
Deferred gain on sale $ 27.3    
AC JV, LLC      
Schedule of Equity Method Investments [Line Items]      
Ownership percentage   32.00%  
Wanda      
Schedule of Equity Method Investments [Line Items]      
Ownership percentage   50.01%  
Combined voting power held in Holdings (as a percent)   75.01%