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SEGMENT INFORMATION (Tables)

12 Months Ended

Dec. 31, 2021

Disclosure of entity's operating segments [Abstract]

Disclosure of operating segments

						Year ended December 31, 2021
						Steel						Mining						Inter-segment eliminations						Total
IFRS
Net sales						16,043,033						526,270						(478,559)						16,090,744
Cost of sales						(10,082,270)						(310,634)						497,834						(9,895,070)
Gross profit						5,960,763						215,636						19,275						6,195,674
Selling, general and administrative expenses						(923,660)						(26,464)						—						(950,124)
Other operating income, net						24,515						1,071						—						25,586
Operating income - IFRS						5,061,618						190,243						19,275						5,271,136
Management view
Net sales						16,043,033						536,588						(488,877)						16,090,744
Operating income						4,210,135						204,070						1,586						4,415,791
Reconciliation items:
Differences in Cost of sales																								855,345
Operating income - IFRS																								5,271,136
Financial income (expense), net																								92,462
Equity in earnings (losses) of non-consolidated companies																								400,732
Income before income tax expense - IFRS																								5,764,330
Depreciation and amortization - IFRS						(528,144)						(63,646)						—						(591,790)

						Year ended December 31, 2020
						Steel						Mining						Inter-segment eliminations						Total
IFRS
Net sales						8,679,513						390,541						(334,619)						8,735,435
Cost of sales						(7,172,635)						(268,905)						341,617						(7,099,923)
Gross profit						1,506,878						121,636						6,998						1,635,512
Selling, general and administrative expenses						(740,056)						(22,826)						—						(762,882)
Other operating income (expenses), net						208,965						(2,122)						—						206,843
Operating income - IFRS						975,787						96,688						6,998						1,079,473
Management view
Net sales						8,679,513						384,255						(328,333)						8,735,435
Operating income						1,046,623						101,937						689						1,149,249
Reconciliation items:
Differences in Cost of sales																								(69,776)
Operating income - IFRS																								1,079,473
Financial income (expense), net																								22,331
Equity in earnings (losses) of non-consolidated companies																								57,555
Income before income tax expense - IFRS																								1,159,359
Depreciation and amortization - IFRS						(580,807)						(50,244)						—						(631,051)

4.    SEGMENT INFORMATION (continued)

						Year ended December 31, 2019
						Steel						Mining						Inter-segment eliminations						Total
IFRS
Net sales						10,186,171						364,058						(357,411)						10,192,818
Cost of sales						(8,552,493)						(259,535)						359,588						(8,452,440)
Gross profit						1,633,679						104,523						2,177						1,740,378
Selling, general and administrative expenses						(885,146)						(12,330)						—						(897,475)
Other operating income (expenses), net						21,931						(268)						—						21,663
Operating income - IFRS						770,466						91,924						2,177						864,566
Management view
Net sales						10,230,650						417,619						(410,972)						10,237,297
Operating income						841,169						146,636						2,177						989,982
Reconciliation items:
Differences in Cost of sales																								99,315
Effect of inflation adjustment (Note 3 (cc))																								(224,731)
Operating income - IFRS																								864,566
Financial income (expense), net																								(98,969)
Equity in earnings (losses) of non-consolidated companies																								60,967
Income before income tax expense - IFRS																								826,564
Depreciation and amortization - IFRS						(612,744)						(48,368)						—						(661,112)

Disclosure of geographical areas

						Year ended December 31, 2021
						Mexico						Southern region						Brazil and Other markets						Total
Net sales						8,990,868						3,377,596						3,722,280						16,090,744
Non-current assets (1)						4,789,273						861,149						1,683,412						7,333,834

						Year ended December 31, 2020
						Mexico						Southern region						Brazil and Other markets						Total
Net sales						4,660,278						1,762,785						2,312,372						8,735,435
Non-current assets (1)						4,726,342						919,490						1,767,432						7,413,264

						Year ended December 31, 2019
						Mexico						Southern region						Brazil and Other markets						Total
Net sales						5,477,690						1,704,132						3,010,996						10,192,818
Non-current assets (1)						4,584,802						1,008,860						1,889,757						7,483,419

(1) Includes Property, plant and equipment and Intangible assets.

Disclosure of products and services

						Year ended December 31,
						2021						2020						2019
Semi-finished (1)						167,138						3,632						51,496
Slabs						1,304,437						1,047,311						1,753,090
Hot rolled (2)						6,356,576						2,880,055						3,275,941
Cold rolled						1,990,143						1,101,963						1,165,406
Coated (3)						5,303,394						3,015,132						3,263,463
Roll-formed and tubular (4)						659,609						413,337						380,688
Other products (5)						309,447						274,005						302,734
TOTAL SALES						16,090,744						8,735,435						10,192,818

(1)Semi-finished includes billets and round bars.

(2)Hot rolled includes hot rolled flat products, merchant bars, reinforcing bars, stirrups and rods.

(3)Coated includes tin plate and galvanized products.

(4)Roll-formed and tubular includes tubes, beams, insulated panels, roofing and cladding, roof tiles, steel decks and pre-engineered metal building systems.

(5)Other products include mainly sales of energy and pig iron.

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