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Note 13 - Receivables - Non Current | 12 Months Ended
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Dec. 31, 2019
Statement Line Items [Line Items] |
Disclosure of non-current receivables [text block] |
| 13 | Receivables – non current
|  | Year ended December 31,
|  | 2019 |  | 2018
Employee advances and loans |  |  | 6,008 |  |  |  | 3,740 |
Tax credits |  |  | 20,065 |  |  |  | 16,025 |
Receivables from related parties |  |  | 59,999 |  |  |  | 58,128 |
Legal deposits |  |  | 12,378 |  |  |  | 12,446 |
Advances to suppliers and other advances |  |  | 3,772 |  |  |  | 7,592 |
Derivative financial instruments |  |  | - |  |  |  | 52 |
Receivable Venezuelan subsidiaries |  |  | 48,659 |  |  |  | 48,659 |
Others |  |  | 6,222 |  |  |  | 5,263 |
|  |  | 157,103 |  |  |  | 151,905 |

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- Definition The disclosure for non-current receivables. + References No definition available. + Details
Name: | ts_DisclosureOfNoncurrentReceivablesTextBlock
Namespace Prefix: | ts_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | ts_StatementLineItems
Namespace Prefix: | ts_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration