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Net revenues - Schedule of net revenues disaggregated by customer (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Segment Reporting Information [Line Items]      
Total net revenues $ 4,371,172 $ 4,022,211 $ 3,709,377
Data-Tech-AI      
Segment Reporting Information [Line Items]      
Total net revenues 1,959,889 1,692,281 1,383,971
Digital Operations      
Segment Reporting Information [Line Items]      
Total net revenues $ 2,411,283 $ 2,329,930 $ 2,325,406