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Note 24 - Current allowances and provisions - Deducted From Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Allowance for doubtful accounts - trade receivables [member] |  |  |
Reconciliation of changes in allowance account for credit losses of financial assets [abstract] |  |  |
Values at the beginning of the year |  | $ (47,120) | $ (53,676)
Translation differences |  | (12) | 111
Decrease due to sale of subsidiaries | [1] |  | 2
(Additional) / reversal allowances |  | 223 | 4,297
Used |  | 1,414 | 2,146
Values at the end of the year |  | (45,495) | (47,120)
Allowance for other doubtful accounts - other receivables [member] |  |  |
Reconciliation of changes in allowance account for credit losses of financial assets [abstract] |  |  |
Values at the beginning of the year |  | (3,206) | (3,917)
Translation differences |  | 68 | 227
Decrease due to sale of subsidiaries | [1] |  | 10
(Additional) / reversal allowances |  | (346) | 379
Used |  | 5 | 95
Values at the end of the year |  | (3,479) | (3,206)
Allowance for inventory obsolescence [member] |  |  |
Reconciliation of changes in allowance account for credit losses of financial assets [abstract] |  |  |
Values at the beginning of the year |  | (245,774) | (263,635)
Translation differences |  | (405) | 1,877
Decrease due to sale of subsidiaries | [1] |  | 405
(Additional) / reversal allowances |  | (24,901) | (23,296)
Used |  | 48,414 | 38,875
Values at the end of the year |  | $ (222,666) | $ (245,774)
[1] | Rel ated to Geneva sale. See note 6 to these Consolidated Financial Statements.

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- Definition The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 16 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2022-03-24 + Details
Name: | ifrs-full_AllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The decrease in other provisions resulting from the loss of control of a subsidiary. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2022-03-24 -Paragraph 84 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2022-en-r&anchor=para_84&doctype=Standard -URIDate 2022-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2022-03-24 -Paragraph 84 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2022-en-r&anchor=para_84&doctype=Standard -URIDate 2022-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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- Definition The decrease in an allowance account for credit losses of financial assets resulting from the utilisation of the allowance. [Refer: Allowance account for credit losses of financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 16 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2022-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The increase (decrease) through reversals and (additional) allowances. + References No definition available. + Details
Name: | ts_IncreaseDecreaseThroughReversalsAndAdditionalAllowances
Namespace Prefix: | ts_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=ts_AllowanceForDoubtfulAccountsTradeReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=ts_AllowanceForInventoryObsolescenceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |