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Cover Cover - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2024
Feb. 07, 2025
Jun. 30, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Current Fiscal Year End Date --12-31    
Document Period End Date Dec. 31, 2024    
Document Transition Report false    
Entity File Number 0-24429    
Entity Registrant Name COGNIZANT TECHNOLOGY SOLUTIONS CORPORATION    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 13-3728359    
Entity Address, Address Line One 300 Frank W. Burr Blvd.    
Entity Address, City or Town Teaneck    
Entity Address, State or Province NJ    
Entity Address, Postal Zip Code 07666    
City Area Code 201    
Local Phone Number 801-0233    
Title of 12(b) Security Class A Common Stock, $0.01 par value per share    
Trading Symbol CTSH    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 33.7
Entity Common Stock, Shares Outstanding   494,615,514  
Documents Incorporated by Reference The following documents are incorporated by reference into the Annual Report on Form 10-K: Portions of the registrant’s definitive Proxy Statement for its 2025 Annual Meeting of Stockholders are incorporated by reference into Part III of this Report.    
Amendment Flag false    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001058290