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Geographic Information - Narrative (Details) - segment
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Concentration Risk [Line Items]      
Number of operating segments 1    
United States | Revenue | Geographic concentration risk      
Concentration Risk [Line Items]      
Concentration risk (in percent) 58.00% 61.00% 63.00%