Quarterly report pursuant to Section 13 or 15(d)

LONG-LIVED ASSETS (Definite-lived Intangibles) (Details)

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LONG-LIVED ASSETS (Definite-lived Intangibles) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Finite-lived Intangible Assets [Roll Forward]    
Gross carrying amount $ 1,631,658  
Accumulated amortization (605,320)  
Net 1,026,338  
Acquisitions—current year 10,981  
Acquisitions—prior year (2)  
Foreign exchange 17,972  
Other (2) [1] (6,152)  
Net change 22,799  
Amortization (49,709) $ (51,901)
Foreign exchange (1,123)  
Other (2) [1] 6,141  
Net change (44,691)  
Gross carrying amount 1,654,457  
Accumulated amortization (650,011)  
Net $ 1,004,446  
Weighted-average lives of definite-lived intangible assets 28 years  
Client/vendor relationships [Member]    
Finite-lived Intangible Assets [Roll Forward]    
Gross carrying amount $ 576,930  
Accumulated amortization (178,725)  
Net 398,205  
Acquisitions—current year 1,003  
Acquisitions—prior year (2)  
Foreign exchange 4,416  
Other (2) [1] 0  
Net change 5,417  
Amortization (18,106)  
Foreign exchange (35)  
Other (2) [1] 0  
Net change (18,141)  
Gross carrying amount 582,347  
Accumulated amortization (196,866)  
Net $ 385,481  
Weighted-average lives of definite-lived intangible assets 3 years  
Revenue-generating contracts [Member]    
Finite-lived Intangible Assets [Roll Forward]    
Gross carrying amount $ 593,258  
Accumulated amortization (275,909)  
Net 317,349  
Acquisitions—current year 0  
Acquisitions—prior year 0  
Foreign exchange 7,307  
Other (2) [1] 0  
Net change 7,307  
Amortization (17,218)  
Foreign exchange (759)  
Other (2) [1] 0  
Net change (17,977)  
Gross carrying amount 600,565  
Accumulated amortization (293,886)  
Net 306,679  
Venue Management & Leaseholds    
Finite-lived Intangible Assets [Roll Forward]    
Gross carrying amount 232,856  
Accumulated amortization (46,929)  
Net 185,927  
Acquisitions—current year 9,978  
Acquisitions—prior year 0  
Foreign exchange 2,518  
Other (2) [1] 0  
Net change 12,496  
Amortization (6,046)  
Foreign exchange 269  
Other (2) [1] (7)  
Net change (5,784)  
Gross carrying amount 245,352  
Accumulated amortization (52,713)  
Net $ 192,639  
Weighted-average lives of definite-lived intangible assets 30 years  
Trademarks and naming rights [Member]    
Finite-lived Intangible Assets [Roll Forward]    
Gross carrying amount $ 180,865  
Accumulated amortization (79,349)  
Net 101,516  
Acquisitions—current year 0  
Acquisitions—prior year 0  
Foreign exchange 3,729  
Other (2) [1] 0  
Net change 3,729  
Amortization (4,556)  
Foreign exchange (788)  
Other (2) [1] 2  
Net change (5,342)  
Gross carrying amount 184,594  
Accumulated amortization (84,691)  
Net 99,903  
Technology [Member]    
Finite-lived Intangible Assets [Roll Forward]    
Gross carrying amount 37,335  
Accumulated amortization (18,375)  
Net 18,960  
Acquisitions—current year 0  
Acquisitions—prior year 0  
Foreign exchange (10)  
Other (2) [1] (5,612)  
Net change (5,622)  
Amortization (2,959)  
Foreign exchange 5  
Other (2) [1] 5,706  
Net change 2,752  
Gross carrying amount 31,713  
Accumulated amortization (15,623)  
Net 16,090  
Other intangible assets [Member]    
Finite-lived Intangible Assets [Roll Forward]    
Gross carrying amount [2] 10,414  
Accumulated amortization [2] (6,033)  
Net [2] 4,381  
Acquisitions—current year [2] 0  
Acquisitions—prior year [2] 0  
Foreign exchange [2] 12  
Other (2) [1],[2] (540)  
Net change [2] (528)  
Amortization [2] (824)  
Foreign exchange [2] 185  
Other (2) [1],[2] 440  
Net change [2] (199)  
Gross carrying amount [2] 9,886  
Accumulated amortization [2] (6,232)  
Net [2] $ 3,654  
[1] Other primarily includes netdowns of fully amortized or impaired assets.
[2] Other primarily includes intangible assets for non-compete agreements.