Organization	6 Months Ended
	Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization ExlService Holdings, Inc. (“ExlService Holdings”) is organized as a corporation under the laws of the state of Delaware. ExlService Holdings, together with its subsidiaries and affiliates (collectively, the “Company”), operates in the Business Process Management (“BPM”) industry providing operations management services and analytics services that helps its clients build and grow sustainable businesses. By orchestrating its domain expertise, data, analytics and digital technology, the Company looks deeper to design and manage agile, customer-centric operating models to improve global operations, drive profitability, enhance customer satisfaction, increase data-driven insights, and manage risk and compliance. The Company’s clients are located principally in the United States of America (“U.S.”) and the United Kingdom (“U.K”).