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Note 11 - Intangible Assets, Net - Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Values at the beginning of the year |  | $ 1,561,559 |  |  |
Values at the end of the year |  | 1,429,056 |  | $ 1,561,559 |
Information system projects [member] |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Values at the beginning of the year |  | 68,533 |  |  |
Values at the end of the year |  | 59,993 |  | 68,533 |
Licenses, patents and trademarks [member] |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Values at the beginning of the year | [1] | 89,970 |  |  |
Values at the end of the year | [1] | 167,969 |  | 89,970 |
Goodwill [member] |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Values at the beginning of the year |  | 1,320,245 |  |  |
Values at the end of the year |  | 1,085,968 |  | 1,320,245 |
Customer-related intangible assets [member] |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Values at the beginning of the year |  | 82,811 |  |  |
Values at the end of the year |  | 115,126 |  | 82,811 |
Gross carrying amount [member] |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Values at the beginning of the year |  | 5,326,500 |  | 5,189,988 |
Currency translation adjustment |  | (3,730) |  | (2,955) |
Increase due to business combinations |  | 526,846 | [2] | 114,466 | [3]
Additions |  | 25,567 |  | 36,259 |
Transfers / Reclassifications |  | (1,393) |  | (4,665) |
Disposals |  | (4,825) |  | (6,593) |
Values at the end of the year |  | 5,868,965 |  | 5,326,500 |
Gross carrying amount [member] | Information system projects [member] |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Values at the beginning of the year |  | 604,870 |  | 580,622 |
Currency translation adjustment |  | 1,108 |  | (1,917) |
Increase due to business combinations |  | 11,563 | [2] | 405 | [3]
Additions |  | 24,965 |  | 35,487 |
Transfers / Reclassifications |  | (1,393) |  | (4,665) |
Disposals |  | (3,761) |  | (5,062) |
Values at the end of the year |  | 637,352 |  | 604,870 |
Gross carrying amount [member] | Licenses, patents and trademarks [member] |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Values at the beginning of the year | [1] | 463,742 |  | 464,571 |
Currency translation adjustment | [1] | 220 |  | (70) |
Increase due to business combinations | [1] | 87,000 | [2] |  | [3]
Additions | [1] | 602 |  | 772 |
Transfers / Reclassifications | [1] |  |  |  |
Disposals | [1] | (1,064) |  | (1,531) |
Values at the end of the year | [1] | 550,500 |  | 463,742 |
Gross carrying amount [member] | Goodwill [member] |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Values at the beginning of the year |  | 2,117,837 |  | 2,085,936 |
Currency translation adjustment |  | (5,058) |  | (968) |
Increase due to business combinations |  | 357,183 | [2] | 32,869 | [3]
Additions |  |  |  |  |
Transfers / Reclassifications |  |  |  |  |
Disposals |  |  |  |  |
Values at the end of the year |  | 2,469,962 |  | 2,117,837 |
Gross carrying amount [member] | Customer-related intangible assets [member] |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Values at the beginning of the year |  | 2,140,051 |  | 2,058,859 |
Currency translation adjustment |  |  |  |  |
Increase due to business combinations |  | 71,100 | [2] | 81,192 | [3]
Additions |  |  |  |  |
Transfers / Reclassifications |  |  |  |  |
Disposals |  |  |  |  |
Values at the end of the year |  | 2,211,151 |  | 2,140,051 |
Accumulated depreciation, amortisation and impairment [member] |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Values at the beginning of the year |  | 3,764,941 |  | 3,724,023 |
Currency translation adjustment |  | 889 |  | (1,734) |
Impairment charge |  | 586,402 |  |  |
Transfers / Reclassifications |  | 931 |  |  |
Disposals |  | (3,730) |  | (5,263) |
Amortization charge |  | 90,476 |  | 47,915 |
Values at the end of the year |  | 4,439,909 |  | 3,764,941 |
Accumulated depreciation, amortisation and impairment [member] | Information system projects [member] |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Values at the beginning of the year |  | 536,337 |  | 513,984 |
Currency translation adjustment |  | 890 |  | (1,734) |
Impairment charge |  |  |  |  |
Transfers / Reclassifications |  | 931 |  |  |
Disposals |  | (3,730) |  | (4,850) |
Amortization charge |  | 42,931 |  | 28,937 |
Values at the end of the year |  | 577,359 |  | 536,337 |
Accumulated depreciation, amortisation and impairment [member] | Licenses, patents and trademarks [member] |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Values at the beginning of the year | [1] | 373,772 |  | 373,466 |
Currency translation adjustment | [1] | (1) |  |  |
Impairment charge | [1] |  |  |  |
Transfers / Reclassifications | [1] |  |  |  |
Disposals | [1] |  |  | (413) |
Amortization charge | [1] | 8,760 |  | 719 |
Values at the end of the year | [1] | 382,531 |  | 373,772 |
Accumulated depreciation, amortisation and impairment [member] | Goodwill [member] |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Values at the beginning of the year |  | 797,592 |  | 797,592 |
Currency translation adjustment |  |  |  |  |
Impairment charge |  | 586,402 |  |  |
Transfers / Reclassifications |  |  |  |  |
Disposals |  |  |  |  |
Amortization charge |  |  |  |  |
Values at the end of the year |  | 1,383,994 |  | 797,592 |
Accumulated depreciation, amortisation and impairment [member] | Customer-related intangible assets [member] |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Values at the beginning of the year |  | 2,057,240 |  | 2,038,981 |
Currency translation adjustment |  |  |  |  |
Impairment charge |  |  |  |  |
Transfers / Reclassifications |  |  |  |  |
Disposals |  |  |  |  |
Amortization charge |  | 38,785 |  | 18,259 |
Values at the end of the year |  | $ 2,096,025 |  | $ 2,057,240 |
[1] | Includes Proprietary Technology.
[2] | Related to IPSCO acquisition. See note 32.
[3] | Related to SSPC acquisition. See note 32.

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