Segment Operating Results - Revenues Derived From Clients by Geographical Areas (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Net Revenues	$ 3,776,775	$ 2,891,267	$ 2,344,703
Americas
Segment Reporting Information [Line Items]
Net Revenues	3,067,300	2,331,369	1,826,861
EMEA
Segment Reporting Information [Line Items]
Net Revenues	626,250	503,496	469,694
Asia-Pacific
Segment Reporting Information [Line Items]
Net Revenues	83,225	56,402	48,148
United States
Segment Reporting Information [Line Items]
Net Revenues	$ 2,885,717	$ 2,187,916	$ 1,719,337