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Note 1 - Segment Information (Tables) | 12 Months Ended
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Dec. 31, 2020
Disclosure of operating segments [abstract] |
Disclosure of operating segments [text block] |
Year ended December 31, 2020 |  | Tubes |  |  | Other |  |  | Total |
IFRS - Net Sales |  |  | 4,844 |  |  |  | 303 |  |  |  | 5,147 |
Management view - operating (loss) |  |  | (277 | ) |  |  | (50 | ) |  |  | (327 | )
Differences in cost of sales |  |  | (138 | ) |  |  | 4 |  |  |  | (134 | )
Differences in depreciation and amortization |  |  | 1 |  |  |  | (1 | ) |  |  | - |
Differences in selling, general and administrative expenses |  |  | (2 | ) |  |  | - |  |  |  | (2 | )
Differences in other operating income (expenses), net |  |  | (200 | ) |  |  | - |  |  |  | (200 | )
IFRS - operating (loss) |  |  | (616 | ) |  |  | (47 | ) |  |  | (663 | )
Financial income (expense), net |  |  |  |  |  |  |  |  |  |  | (65 | )
(Loss) before equity in earnings of non-consolidated companies and income tax |  |  |  |  |  |  |  |  |  |  | (728 | )
Equity in earnings of non-consolidated companies |  |  |  |  |  |  |  |  |  |  | 109 |
(Loss) before income tax |  |  |  |  |  |  |  |  |  |  | (619 | )
Capital expenditures |  |  | 189 |  |  |  | 4 |  |  |  | 193 |
Depreciation and amortization |  |  | 661 |  |  |  | 18 |  |  |  | 679 |
Year ended December 31, 2019 |  | Tubes |  |  | Other |  |  | Total |
IFRS - Net Sales |  |  | 6,870 |  |  |  | 424 |  |  |  | 7,294 |
Management view - operating income |  |  | 857 |  |  |  | 73 |  |  |  | 930 |
Differences in cost of sales |  |  | (105 | ) |  |  | 3 |  |  |  | (102) |
Differences in depreciation and amortization |  |  | (1 | ) |  |  | - |  |  |  | (1 | )
Differences in selling, general and administrative expenses |  |  | (1 | ) |  |  | 1 |  |  |  | - |
Differences in other operating income (expenses), net |  |  | 6 |  |  |  | - |  |  |  | 6 |
IFRS - operating income |  |  | 756 |  |  |  | 77 |  |  |  | 833 |
Financial income (expense), net |  |  |  |  |  |  |  |  |  |  | 19 |
Income before equity in earnings of non-consolidated companies and income tax |  |  |  |  |  |  |  |  |  |  | 852 |
Equity in earnings of non-consolidated companies |  |  |  |  |  |  |  |  |  |  | 82 |
Income before income tax |  |  |  |  |  |  |  |  |  |  | 934 |
Capital expenditures |  |  | 338 |  |  |  | 12 |  |  |  | 350 |
Depreciation and amortization |  |  | 523 |  |  |  | 17 |  |  |  | 540 |
Year ended December 31, 2018 |  | Tubes |  |  | Other |  |  | Total |
IFRS - Net Sales |  |  | 7,233 |  |  |  | 426 |  |  |  | 7,659 |
Management view - operating income |  |  | 702 |  |  |  | 81 |  |  |  | 783 |
Differences in cost of sales |  |  | 112 |  |  |  | 7 |  |  |  | 119 |
Differences in depreciation and amortization |  |  | (34 | ) |  |  | - |  |  |  | (34 | )
Differences in selling, general and administrative expenses |  |  | (2 | ) |  |  | 6 |  |  |  | 4 |
IFRS - operating income |  |  | 778 |  |  |  | 94 |  |  |  | 872 |
Financial income (expense), net |  |  |  |  |  |  |  |  |  |  | 37 |
Income before equity in earnings of non-consolidated companies and income tax |  |  |  |  |  |  |  |  |  |  | 909 |
Equity in earnings of non-consolidated companies |  |  |  |  |  |  |  |  |  |  | 194 |
Income before income tax |  |  |  |  |  |  |  |  |  |  | 1,103 |
Capital expenditures |  |  | 346 |  |  |  | 3 |  |  |  | 349 |
Depreciation and amortization |  |  | 645 |  |  |  | 19 |  |  |  | 664 |
Disclosure of geographical areas [text block] |
(all amounts in thousands of U.S. dollars) |  | North America |  | South America |  | Europe |  | Middle East & Africa |  | Asia Pacific |  | Unallocated (*) |  | Total |
Year ended December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  | 2,179,949 |  | 776,235 |  | 642,793 |  | 1,227,532 |  | 320,225 |  | - |  | 5,146,734 |
Total assets |  | 8,071,574 |  | 1,868,458 |  | 1,461,738 |  | 804,559 |  | 552,508 |  | 957,352 |  | 13,716,189 |
Trade receivables |  | 411,692 |  | 115,972 |  | 139,427 |  | 210,194 |  | 90,863 |  | - |  | 968,148 |
Property, plant and equipment, net |  | 3,971,101 |  | 1,050,619 |  | 823,057 |  | 242,939 |  | 105,465 |  | - |  | 6,193,181 |
Capital expenditures |  | 71,531 |  | 63,111 |  | 39,691 |  | 10,452 |  | 8,537 |  | - |  | 193,322 |
Depreciation and amortization |  | 408,546 |  | 106,827 |  | 84,518 |  | 44,259 |  | 34,656 |  | - |  | 678,806 |
Year ended December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  | 3,429,911 |  | 1,391,288 |  | 738,880 |  | 1,382,172 |  | 351,804 |  | - |  | 7,294,055 |
Total assets |  | 7,885,120 |  | 2,227,044 |  | 2,282,775 |  | 958,424 |  | 609,663 |  | 879,965 |  | 14,842,991 |
Trade receivables |  | 612,809 |  | 176,173 |  | 149,321 |  | 319,406 |  | 90,451 |  | - |  | 1,348,160 |
Property, plant and equipment, net |  | 3,771,570 |  | 1,129,260 |  | 816,721 |  | 254,858 |  | 117,608 |  | - |  | 6,090,017 |
Capital expenditures |  | 169,390 |  | 113,999 |  | 55,169 |  | 4,578 |  | 7,038 |  | - |  | 350,174 |
Depreciation and amortization |  | 276,046 |  | 105,308 |  | 82,400 |  | 42,520 |  | 33,247 |  | - |  | 539,521 |
Year ended December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  | 3,611,509 |  | 1,462,044 |  | 724,733 |  | 1,559,988 |  | 300,314 |  | - |  | 7,658,588 |
Total assets |  | 7,971,311 |  | 2,489,522 |  | 1,913,589 |  | 588,746 |  | 482,563 |  | 805,568 |  | 14,251,299 |
Trade receivables |  | 791,190 |  | 280,801 |  | 215,202 |  | 383,358 |  | 66,815 |  | - |  | 1,737,366 |
Property, plant and equipment, net |  | 3,859,060 |  | 1,133,113 |  | 848,178 |  | 94,040 |  | 129,517 |  | - |  | 6,063,908 |
Capital expenditures |  | 196,220 |  | 68,603 |  | 77,467 |  | 2,047 |  | 5,136 |  | - |  | 349,473 |
Depreciation and amortization |  | 441,705 |  | 108,558 |  | 82,769 |  | 10,389 |  | 20,936 |  | - |  | 664,357 |
Segment revenues by market [text block] |
Revenues Tubes (in millions of U.S. dollars) |  |  | 2020 |  |  |  | 2019 |  |  |  | 2018 |
Oil and Gas |  |  | 4,073 |  |  |  | 5,757 |  |  |  | 6,042 |
Hydrocarbon Processing and Power Generation |  |  | 371 |  |  |  | 534 |  |  |  | 602 |
Industrial and Other |  |  | 400 |  |  |  | 579 |  |  |  | 589 |
Total |  |  | 4,844 |  |  |  | 6,870 |  |  |  | 7,233 |

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