Quarterly report pursuant to Section 13 or 15(d)

COMMITMENTS AND CONTINGENCIES (Details)

v3.21.2
COMMITMENTS AND CONTINGENCIES (Details)
$ in Millions
 9 Months Ended 12 Months Ended
Jul. 22, 2019
USD ($)
office
Sep. 30, 2021
Dec. 31, 2019
USD ($)
Dec. 31, 2017
claim
plaintiff
Dec. 13, 2019
claim
Maximum          
Commitments and Contingencies Disclosure [Line Items]          
Debt instrument, term (or less)   1 year      
Georgia          
Commitments and Contingencies Disclosure [Line Items]          
Pending claims       4  
Number of claims combined into a single claim       3  
Canada          
Commitments and Contingencies Disclosure [Line Items]          
Pending claims       5  
Pending national class actions       4  
Number of plaintiffs | plaintiff       19,000  
Number of claims appealed         1
Cybersecurity Incident          
Commitments and Contingencies Disclosure [Line Items]          
Loss related to settlement | $ $ 380.5        
Number of state attorneys general offices company is in cooperation with | office 48        
Litigation settlement, additional contributions for unreimbursed costs and expenses | $ $ 125.0        
Cybersecurity Incident | Maximum          
Commitments and Contingencies Disclosure [Line Items]          
Litigation settlement expense | $ $ 80.5        
Other Current Liabilities | Cybersecurity Incident          
Commitments and Contingencies Disclosure [Line Items]          
Loss related to settlement | $     $ 800.9