| Document and Entity Information | Jun. 21, 2021 | Feb. 09, 2021 |
| Document and Entity Information | ||
| Document Type | 8-K/A | |
| Document Period End Date | Jun. 21, 2021 | |
| Entity Registrant Name | NCR CORP | |
| Entity File Number | 001-00395 | |
| Entity Incorporation, State or Country Code | MD | |
| Entity Tax Identification Number | 31-0387920 | |
| Entity Address, Address Line One | 864 Spring Street NW | |
| Entity Address, City or Town | Atlanta | |
| Entity Address, State or Province | GA | |
| Entity Address, Postal Zip Code | 30308 | |
| City Area Code | 937 | |
| Local Phone Number | 445-1936 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false | |
| Title of 12(b) Security | Common Stock, par value $0.01 per share | |
| Trading Symbol | NCR | |
| Security Exchange Name | NYSE | |
| Entity Emerging Growth Company | false | |
| Entity Central Index Key | 0000070866 | |
| Amendment Flag | false | |
| Document Amendment Filing Date | Sep. 1, 2021 |
