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COMMITMENTS, CONTINGENCIES, AND GUARANTEES (Details)
$ in Millions
Sep. 28, 2018
claim
Dec. 31, 2021
USD ($)
Apr. 18, 2014
item
Loss Contingencies      
2022   $ 14.0  
2023   14.0  
2024   14.0  
2025   14.0  
2026   $ 14.0  
City of Providence | Pending Litigation      
Loss Contingencies      
The number of other securities exchanges a lawsuit has been filed against | item     14
VIX Litigation | Pending Litigation      
Loss Contingencies      
Number of Commodity Exchange Act claims | claim 3