Quarterly report pursuant to Section 13 or 15(d)

BASIS OF PRESENTATION AND OTHER INFORMATION Basis of Presentation and Other Information (Details)

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BASIS OF PRESENTATION AND OTHER INFORMATION Basis of Presentation and Other Information (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Accounting Policies [Abstract]      
Cash received that includes the face value of tickets sold on behalf of ticketing clients and their share of service charges $ 704,300,000   $ 591,000,000
Tax Benefit Recognized For Losses Incurred $ 0 $ 0  
Percentage of Concert segment revenue to total revenue     70.00%
Percentage of Ticketing segment revenue to total revenue     22.00%