REVENUE RECOGNITION (Ticketing Contract Advance) (Details) - USD ($) $ in Thousands  | 
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018  | 
Dec. 31, 2017  | 
Dec. 31, 2016  | 
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| Capitalized Contract Cost [Line Items] | |||
| Amortization of non-recoupable ticketing contract advances | $ 80,087 | $ 83,334 | $ 85,067 | 
| Ticketing [Member] | |||
| Capitalized Contract Cost [Line Items] | |||
| Amortization of non-recoupable ticketing contract advances | 80,100 | 83,300 | $ 85,100 | 
| Prepaid Expenses and Other Current Assets [Member] | Ticketing [Member] | |||
| Capitalized Contract Cost [Line Items] | |||
| Capitalized Contract Cost, Gross | 75,500 | 76,000 | |
| Other Noncurrent Assets [Member] | Ticketing [Member] | |||
| Capitalized Contract Cost [Line Items] | |||
| Capitalized Contract Cost, Gross | $ 78,500 | $ 78,600 | |
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- Definition The aggregate amount of recurring noncash contra revenue charged against earnings in the period to allocate the cost of non-recoupable ticketing contract advances over their estimated remaining economic lives. No definition available. 
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- Definition Amount, before accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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