Annual report pursuant to Section 13 and 15(d)

REVENUE RECOGNITION (Ticketing Contract Advance) (Details)

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REVENUE RECOGNITION (Ticketing Contract Advance) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Capitalized Contract Cost [Line Items]      
Amortization of nonrecoupable ticketing contract advances $ 80,302 $ 80,087 $ 83,334
Ticketing [Member]      
Capitalized Contract Cost [Line Items]      
Amortization of nonrecoupable ticketing contract advances 80,300 80,100 $ 83,300
Prepaid Expenses and Other Current Assets [Member] | Ticketing [Member]      
Capitalized Contract Cost [Line Items]      
Capitalized Contract Cost, Gross 100,900 75,500  
Other Noncurrent Assets [Member] | Ticketing [Member]      
Capitalized Contract Cost [Line Items]      
Capitalized Contract Cost, Gross $ 105,700 $ 78,500