Quarterly report pursuant to Section 13 or 15(d)

REVENUE RECOGNITION (Deferred Revenue) (Details)

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REVENUE RECOGNITION (Deferred Revenue) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Deferred Revenue Arrangement [Line Items]        
Deferred revenue, current $ 2,273,494   $ 1,391,032 $ 1,200,000
Recognition of deferred revenue $ 292,532 $ 318,853    
Percentage of deferred revenue at December 31, 2019 expected to be recognized in 2021 and remaining deferred revenue 4.00%      
Percentage of deferred revenue at December 31, 2019 that has been or will be refunded to fans, and reclassified to accrued expenses if not already refunded. 3.00%      
Concerts [Member]        
Deferred Revenue Arrangement [Line Items]        
Recognition of deferred revenue $ 260,859 286,925    
Ticketing [Member]        
Deferred Revenue Arrangement [Line Items]        
Recognition of deferred revenue 16,708 19,395    
Sponsorship and Advertising [Member]        
Deferred Revenue Arrangement [Line Items]        
Recognition of deferred revenue 13,490 10,798    
Other and Corporate [Member]        
Deferred Revenue Arrangement [Line Items]        
Recognition of deferred revenue $ 1,475 $ 1,735