XML 43 R1.htm IDEA: XBRL DOCUMENT v3.21.1
Document And Entity Information
 12 Months Ended
Dec. 31, 2020
shares
Cover page.  
Entity Registrant Name Tenaris SA
Entity Central Index Key 0001190723
Trading Symbol ts
Current Fiscal Year End Date --12-31
Entity Filer Category Large Accelerated Filer
Entity Current Reporting Status Yes
Entity Voluntary Filers No
Entity Well-known Seasoned Issuer Yes
Entity Emerging Growth Company false
Entity Interactive Data Current Yes
Entity Common Stock, Shares Outstanding (in shares) 1,180,536,830
Entity Shell Company false
Document Type 20-F
Document Period End Date Dec. 31, 2020
Document Fiscal Year Focus 2019
Document Fiscal Period Focus FY
Amendment Flag false
Title of 12(b) Security Ordinary Shares, par value $1.00 per share
Document Annual Report true
Document Transition Report false
Document Shell Company Report false