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BASIS OF PRESENTATION - Narrative (Details)
$ in Millions
8 Months Ended 9 Months Ended
Apr. 28, 2018
Nov. 05, 2018
USD ($)
claim
Sep. 30, 2018
Mar. 26, 2018
Segment Reporting Information [Line Items]        
Equity interest distributed to equity holders (percent) 99.00%      
Equity interest distributed to equity holders pursuant to post-emergency plan (percent) 1.00%      
Other        
Segment Reporting Information [Line Items]        
Revenue, performance obligation, description of timing     The Company’s media representation contracts typically have terms up to ten years in duration and are generally billed monthly upon satisfaction of the performance obligations.  
Maximum | Americas and International Outdoor Advertising        
Segment Reporting Information [Line Items]        
Revenue, performance obligation, description of timing     Revenues from these contracts, which typically cover periods of a few weeks to one year, are generally recognized ratably over the term of the contract as the advertisement is displayed.  
Senior Notes Due 2021        
Segment Reporting Information [Line Items]        
Stated interest rate 14.00%   14.00% 14.00%
Subsequent Event        
Segment Reporting Information [Line Items]        
Number of proofs of claims | claim   4,200    
Amount of proofs of claims | $   $ 808,300    
Number of claims that have been disallowed or withdrawn | claim   275    
Amount of claims that have been disallowed or withdrawn | $   $ 13    
Number of additional claim objections | claim   200    
Amount of additional claim objections | $   $ 4,800