Annual report pursuant to Section 13 and 15(d)

REVENUE RECOGNITION (Ticketing Contract Advance) (Details)

v3.20.4
REVENUE RECOGNITION (Ticketing Contract Advance) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Capitalized Contract Cost [Line Items]      
Amortization of nonrecoupable ticketing contract advances $ 47,971 $ 80,302 $ 80,087
Ticketing [Member]      
Capitalized Contract Cost [Line Items]      
Amortization of nonrecoupable ticketing contract advances 48,000 80,300 $ 80,100
Prepaid Expenses and Other Current Assets [Member] | Ticketing [Member]      
Capitalized Contract Cost [Line Items]      
Capitalized Contract Cost, Gross 63,500 100,900  
Other Noncurrent Assets [Member] | Ticketing [Member]      
Capitalized Contract Cost [Line Items]      
Capitalized Contract Cost, Gross $ 87,000 $ 105,700