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Summary of Significant Accounting Policies - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2022
USD ($)
Institution
Segment
Customer
Dec. 31, 2021
USD ($)
Customer
Dec. 31, 2020
Customer
Properties and Equipment      
Number of operating segments | Segment 1    
Number of financial institutions | Institution 3    
Restricted cash | $ $ 10 $ 10  
Sales Revenue, Net | Customer      
Properties and Equipment      
Number of customers | Customer 2 0 3
Sales Revenue, Net | Customer | Customer One      
Properties and Equipment      
Percentage of Total Sales 13.00%   21.00%
Sales Revenue, Net | Customer | Customer Two      
Properties and Equipment      
Percentage of Total Sales 11.00%   16.00%
Sales Revenue, Net | Customer | Customer Three      
Properties and Equipment      
Percentage of Total Sales     12.00%
Minimum      
Properties and Equipment      
Estimated useful life 3 years    
Maximum      
Properties and Equipment      
Estimated useful life 30 years