Employee Benefit Plans - Schedule of amounts contributed to defined contribution plans in various jurisdictions (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	$ 34,881	$ 32,366	$ 71,490	$ 67,046
India
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	13,644	11,887	26,488	23,038
U.S.
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	5,055	4,766	11,151	10,223
U.K.
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	4,084	4,202	10,019	10,162
China
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	6,970	6,671	14,310	13,522
Other Regions
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plans, contributed amount	$ 5,128	$ 4,840	$ 9,522	$ 10,101