Annual report pursuant to Section 13 and 15(d)

COMMITMENTS AND CONTINGENCIES - Narrative (Details)

v3.22.0.1
COMMITMENTS AND CONTINGENCIES - Narrative (Details)
 12 Months Ended
Jul. 22, 2019
USD ($)
Dec. 31, 2021
USD ($)
claim
plaintiff
lawsuit
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 13, 2019
claim
Commitments and Contingencies Disclosure [Line Items]          
Cash paid for data processing, outsourcing services and other agreements   $ 51,000,000 $ 50,000,000 $ 52,000,000  
Change in control event, voting stock acquired (or more)   20.00%      
Percent of common stock received upon merger   66.67%      
Conditional payment for unrecognized severance benefit for key executives   $ 30,500,000      
Relative total shareholder return, period   3 years      
Conditional payout percentage of target award   100.00%      
Accrual related to indemnifications   $ 0 0    
Google Agreement          
Commitments and Contingencies Disclosure [Line Items]          
Expected future year's minimum contractual obligation   520,000,000      
Expected future year's minimum contractual obligation within any annual period   120,000,000      
Cash paid for data processing, outsourcing services and other agreements   $ 62,000,000 $ 29,000,000 14,000,000  
Minimum          
Commitments and Contingencies Disclosure [Line Items]          
Benefit continuation period   2 years      
Maximum          
Commitments and Contingencies Disclosure [Line Items]          
Debt instrument, term   1 year      
Data Processing, Outsourcing Services And Other Agreements | Minimum          
Commitments and Contingencies Disclosure [Line Items]          
Data processing, outsourcing services and other agreements, expiration year   2022      
Data processing, outsourcing services and other agreements, estimated aggregate contractual obligation   $ 902,400,000      
Non cancelable contractual obligations within any annual period   $ 260,600,000      
Data Processing, Outsourcing Services And Other Agreements | Maximum          
Commitments and Contingencies Disclosure [Line Items]          
Data processing, outsourcing services and other agreements, expiration year   2027      
IBM Operations Support Services Agreement          
Commitments and Contingencies Disclosure [Line Items]          
Expected future year's minimum contractual obligation   $ 42,000,000      
Expected future year's minimum contractual obligation within any annual period   $ 32,000,000      
Canada          
Commitments and Contingencies Disclosure [Line Items]          
Pending claims, number | claim   5      
Pending national claims, number | claim   4      
Loss contingency, number of plaintiffs | plaintiff   19,000      
Number of claims appealed | claim         1
Cybersecurity Incident          
Commitments and Contingencies Disclosure [Line Items]          
Loss contingency, loss in period $ 380,500,000     $ 800,900,000  
Additional contributions for unreimbursed costs and expenses   $ 125,000,000      
Cybersecurity Incident | Maximum          
Commitments and Contingencies Disclosure [Line Items]          
Settlement administration costs $ 80,500,000        
Cybersecurity Incident | GEORGIA          
Commitments and Contingencies Disclosure [Line Items]          
Pending claims, number | lawsuit   4      
Number of claims combined into a single claim | lawsuit   3