XML 39 R1.htm IDEA: XBRL DOCUMENT v3.10.0.1
Document and Entity Information - USD ($)
shares in Millions, $ in Billions
 12 Months Ended
Dec. 31, 2018
Jan. 31, 2019
Jun. 30, 2018
Document And Entity Information [Abstract]      
Entity Registrant Name TERADATA CORP /DE/    
Entity Central Index Key 0000816761    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Document Type 10-K/A    
Document Period End Date Dec. 31, 2018    
Document Fiscal Year Focus 2018    
Trading Symbol TDC    
Document Fiscal Period Focus FY    
Amendment Flag true    
Amendment Description Teradata Corporation is filing this Amendment No. 1 to its Annual Report on Form 10-K for the fiscal year ended December 31, 2018 filed effective February 26, 2019 (the “Form 10-K”) solely for the purpose of filing a conformed copy of the Consent of Independent Registered Public Accounting Firm dated February 25, 2019 (the “Consent”) filed as Exhibit 23.1 to the Form 10-K. The conformed signature of PricewaterhouseCoopers LLC was inadvertently omitted from the copy of the Consent filed with the Form 10-K. A conformed copy of the Consent is filed as Exhibit 23.1 hereto. There are no other changes made by this Amendment No. 1.    
Entity Common Stock, Shares Outstanding (in shares)   117.3  
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 4.8
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false