OTHER INFORMATION - Barter and Trade (Narrative) (Detail) - USD ($) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
|
| Nonmonetary Transaction [Line Items] | ||||
| Barter and trade revenues | $ 30,200,000 | $ 30,400,000 | $ 105,700,000 | $ 88,100,000 |
| Barter and trade expenses | 22,500,000 | $ 30,600,000 | 80,000,000 | $ 84,900,000 |
| Advertising exchanged for equity interests | ||||
| Nonmonetary Transaction [Line Items] | ||||
| Barter and trade revenues | 5,400,000 | 22,100,000 | ||
| Barter and trade expenses | $ 0 | $ 0 | ||