v3.23.2
Segment Reporting - Narrative (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
segment
member
Jun. 30, 2022
USD ($)
member
Segment Reporting Information [Line Items]        
Number of reportable segments | segment     3  
Total revenues $ 2,336 $ 2,413 $ 4,808 $ 4,872
Exchanges Segment        
Segment Reporting Information [Line Items]        
Total revenues 1,541 $ 1,604 $ 3,214 $ 3,247
Revenue | Exchanges Segment | Customer Concentration Risk        
Segment Reporting Information [Line Items]        
Number of members | member     1 1
Total revenues $ 130   $ 254 $ 213
Concentration risk, percentage 12.00%   12.00% 10.00%