Organization	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	OrganizationExlService 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”), is a leading data analytics and digital operations and solutions company that partners with clients to improve business outcomes and unlock growth. By bringing together deep domain expertise with robust data, powerful analytics, cloud, artificial intelligence and machine learnings, the Company creates agile, scalable solutions and executes complex operations for the world’s leading corporations in industries including insurance, healthcare, banking and financial services, media, and retail, among others. The Company’s clients are located principally in the United States of America (“U.S.”) and the United Kingdom (“U.K.”).