v3.26.1
Goodwill and intangible assets - Schedule of Changes in Goodwill (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Goodwill [Roll Forward]      
Opening balance $ 1,781,116 $ 1,669,769 $ 1,669,769
Goodwill relating to acquisitions consummated during the period   0 111,925
Impact of measurement period adjustments   0 346
Effect of exchange rate fluctuations (12,254) (12,254) (924)
Closing balance 1,768,862   1,781,116
Financial Services      
Goodwill [Roll Forward]      
Opening balance 411,428 404,997 404,997
Goodwill relating to acquisitions consummated during the period     6,132
Impact of measurement period adjustments     19
Effect of exchange rate fluctuations (2,781)   280
Closing balance 408,647   411,428
Consumer and Healthcare      
Goodwill [Roll Forward]      
Opening balance 676,484 587,797 587,797
Goodwill relating to acquisitions consummated during the period     88,519
Impact of measurement period adjustments     274
Effect of exchange rate fluctuations (4,585)   (106)
Closing balance 671,899   676,484
High Tech and Manufacturing      
Goodwill [Roll Forward]      
Opening balance 693,204 $ 676,975 676,975
Goodwill relating to acquisitions consummated during the period     17,274
Impact of measurement period adjustments     53
Effect of exchange rate fluctuations (4,888)   (1,098)
Closing balance $ 688,316   $ 693,204