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BASIS OF PRESENTATION AND OTHER INFORMATION Basis of Presentation and Other Information (Details) - USD ($)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Accounting Policies [Abstract]      
Cash received that includes the face value of tickets sold on behalf of ticketing clients and their share of service charges $ 887,700,000   $ 769,400,000
Tax Benefit Recognized For Losses Incurred $ 0 $ 0