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RESTRUCTURING AND RELATED CHARGES - Narrative (Details)
 1 Months Ended 3 Months Ended 6 Months Ended
Aug. 05, 2022
position
Apr. 30, 2020
position
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Mar. 31, 2022
USD ($)
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Jul. 31, 2023
USD ($)
Jan. 31, 2023
USD ($)
Restructuring Cost and Reserve [Line Items]                  
Long-lived asset impairment     $ 0 $ 8,811,000 $ 0 $ 0 $ 8,811,000    
Restructuring-related impairment       $ 1,200,000   0 $ 1,180,000    
600 West Chicago                  
Restructuring Cost and Reserve [Line Items]                  
Option to lease early termination penalty                 $ 9,600,000
2022 Restructuring Plan, First and Second Phase                  
Restructuring Cost and Reserve [Line Items]                  
Reduction in number of positions (in employees) | position 1,000                
2022 Restructuring Plan, First and Second Phase | Minimum                  
Restructuring Cost and Reserve [Line Items]                  
Expected restructuring cost (up to)     20,000,000     20,000,000      
2022 Restructuring Plan, First and Second Phase | Maximum                  
Restructuring Cost and Reserve [Line Items]                  
Expected restructuring cost (up to)     27,000,000     27,000,000      
2022 Restructuring Plan                  
Restructuring Cost and Reserve [Line Items]                  
Restructuring and related charges, incurred to date     19,100,000     19,100,000      
2022 Restructuring Plan Third Phase | Subsequent Event                  
Restructuring Cost and Reserve [Line Items]                  
Expected restructuring cost (up to)               $ 3,600,000  
2020 Restructuring Plan                  
Restructuring Cost and Reserve [Line Items]                  
Reduction in number of positions (in employees) | position   1,600              
Restructuring and related charges, incurred to date     $ 108,000,000     $ 108,000,000