Annual report pursuant to Section 13 and 15(d)

REVENUE RECOGNITION (Deferred Revenue) (Details)

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REVENUE RECOGNITION (Deferred Revenue) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]      
Deferred Revenue, Current $ 1,839,323 $ 1,391,032 $ 1,200,000
Recognition of deferred revenue $ 321,617 1,207,322  
Percentage Of Deferred Revenue Expected To Be Recognized In Next Fiscal Year 40.60%    
Percentage Of Deferred Revenue Refunded 32.70%    
Deferred Revenue, Noncurrent $ 88,641 34,390 $ 27,500
Concerts [Member]      
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]      
Recognition of deferred revenue 273,734 1,121,945  
Ticketing [Member]      
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]      
Recognition of deferred revenue 26,471 62,088  
Sponsorship and Advertising [Member]      
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]      
Recognition of deferred revenue 18,010 20,220  
Other & Corporate      
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]      
Recognition of deferred revenue $ 3,402 $ 3,069