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STOCK-BASED COMPENSATION PLANS - Restricted Stock Awards and Units and Performance-Based Stock Units (Details)
 3 Months Ended
Mar. 31, 2023
$ / shares
shares
RSUs  
Shares  
Unvested balance at the beginning of the period (in shares) | shares 7,649,747
Granted (in shares) | shares 853,981
Vested (in shares) | shares (1,020,277)
Forfeited (in shares) | shares (399,136)
Unvested balance at the end of the period (in shares) | shares 7,084,315
Weighted Average Grant Date Fair Value  
Unvested balance at the end of the period (in dollars per share) | $ / shares $ 3.96
Granted (in dollars per share) | $ / shares 3.37
Vested (in dollars per share) | $ / shares 5.02
Forfeited (in dollars per share) | $ / shares 4.05
Unvested balance at end of the period (in dollars per share) | $ / shares $ 3.74
PSUs  
Shares  
Unvested balance at the beginning of the period (in shares) | shares 6,653,503
Granted (in shares) | shares 27,153
Vested (in shares) | shares (381,071)
Forfeited (in shares) | shares (1,667,550)
Unvested balance at the end of the period (in shares) | shares 4,632,035
Weighted Average Grant Date Fair Value  
Unvested balance at the end of the period (in dollars per share) | $ / shares $ 2.52
Granted (in dollars per share) | $ / shares 4.27
Vested (in dollars per share) | $ / shares 5.40
Forfeited (in dollars per share) | $ / shares 3.93
Unvested balance at end of the period (in dollars per share) | $ / shares $ 1.66