| Cover | Oct. 27, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Oct. 27, 2021 |
| Entity Registrant Name | Cognizant Technology Solutions Corporation |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 0-24429 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A Common Stock,$0.01 par value per share |
| Trading Symbol | CTSH |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001058290 |
| Amendment Flag | false |
