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 ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Accounting Policies [Abstract]      
Cash received that includes the face value of tickets sold on behalf of ticketing clients and their share of service charges. $ 724,400,000   $ 673,500,000
Investments in nonconsolidated affiliates 162,500,000   $ 170,500,000
Tax benefit recognized for losses incurred $ 0 $ 0