| Document and Entity Information | Oct. 07, 2021 |
| Cover [Abstract] | |
| Entity Registrant Name | CONDUENT Inc |
| Amendment Flag | false |
| Entity Central Index Key | 0001677703 |
| Document Type | 8-K |
| Document Period End Date | Oct. 7, 2021 |
| Entity Incorporation State Country Code | NY |
| Entity File Number | 001-37817 |
| Entity Tax Identification Number | 81-2983623 |
| Entity Address, Address Line One | 100 Campus Drive |
| Entity Address, Address Line Two | Suite 200 |
| Entity Address, City or Town | Florham Park |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 07932 |
| City Area Code | (844) |
| Local Phone Number | 663-2638 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, $0.01 par value |
| Trading Symbol | CNDT |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
