| Component: (Network and Table) | |
|---|---|
| Network | 2415408 - Disclosure - Employee Benefit Plans - Change in Plan Assets (Detail) (http://www.exlservice.com/role/EmployeeBenefitPlansChangeInPlanAssetsDetail) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001297989 (http://www.sec.gov/CIK) |
| Compensation and Retirement Disclosure [Abstract] | Period [Axis] | |
|---|---|---|
2016-01-01 - 2016-12-31 | 2015-01-01 - 2015-12-31 | |
Compensation and Retirement Disclosure [Abstract] | ||
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] | ||
Plan assets at the beginning of the year | ||
Actual return | ||
Employer contribution | ||
Benefits paid | ( | ( |
Effect of exchange rate changes | ( | ( |
Plan assets at the ending of the year | 4,923,000 | |