v3.10.0.1
INVESTMENTS - Related Party Transactions (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Related Party Transactions          
Revenue $ 1,221.4 $ 1,178.7 $ 4,047.5 $ 3,662.4  
Gain (loss) on sale       22.6  
NCM          
Related Party Transactions          
Amounts due from affiliate 1.8   1.8   $ 2.5
Amounts due to affiliate 5.3   5.3   9.4
Note payable to affiliate 2.8   2.8   2.8
Revenue 15.4 6.7 50.0 28.0  
Advertising expense 1.8 1.7 6.0 5.3  
DCM          
Related Party Transactions          
Amounts due from affiliate 0.7   0.7   4.6
Revenue $ 4.2 4.8 $ 13.4 14.3  
Interest in non-consolidated affiliates (as a percent) 50.00%   50.00%    
Ownership percentage 50.00%   50.00%    
DCIP          
Related Party Transactions          
Amounts due from affiliate $ 3.3   $ 3.3   2.8
Deferred rent liability for digital projectors 7.9   7.9   8.1
Digital equipment rental expense 1.4 1.4 $ 4.4 4.3  
Equipment rental term     12 years    
AC JV, LLC          
Related Party Transactions          
Amounts due to affiliate 1.2   $ 1.2   0.5
Gross film exhibition cost 3.5 2.2 8.5 9.0  
Screenvision          
Related Party Transactions          
Amounts due from affiliate 1.8   1.8   3.1
Revenue 3.8 $ 3.5 11.3 $ 9.9  
Nordic          
Related Party Transactions          
Amounts due from affiliate 3.8   3.8   5.7
Amounts due to affiliate $ 2.2   $ 2.2   $ 2.5