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OTHER INFORMATION - Barter and Trade - Narrative (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Nonmonetary Transaction [Line Items]        
Barter and trade revenues $ 28,800,000 $ 24,700,000 $ 75,100,000 $ 57,400,000
Barter and trade expenses 22,900,000 $ 25,100,000 57,200,000 $ 53,900,000
Advertising Exchanged for Equity Interests        
Nonmonetary Transaction [Line Items]        
Barter and trade revenues 4,900,000   16,700,000  
Barter and trade expenses $ 0   $ 0