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INVESTMENTS - Narrative (Details)
$ in Thousands
 4 Months Ended 8 Months Ended 12 Months Ended
May 01, 2019
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2021
USD ($)
investment
company
Dec. 31, 2020
USD ($)
company
investment
Schedule of Investments [Line Items]        
Investment made in exchange for services     $ 17,500 $ 15,000
Trade and barter revenues $ 1,072,775 $ 2,608,862 $ 3,556,906 $ 2,946,124
Number of investments made in private companies | company     7 7
Number of investments accounted for under equity method of accounting | investment     1 1
Number of investments accounted for under cost method | investment     3 2
Number of investments accounted for as notes receivable convertible into equity | investment     3 4
Impairment of investments     $ 8,700 $ 5,700
Trade and Barter Transactions        
Schedule of Investments [Line Items]        
Investment made in exchange for services 5,900 13,000 16,300 10,500
Trade and barter revenues $ 65,934 $ 151,497 $ 175,519 $ 158,383