Grupo Simec, S.A.B. de C.V. (SIM) 20-F/A 12 Jan 21 2019 FY Annual report (foreign) (amended) Financial data

Document and Entity Information

Document and Entity Information	12 Months Ended
	Dec. 31, 2019shares
Document And Entity Information
Entity Registrant Name	GROUP SIMEC SA DE CV
Entity Central Index Key	0000887153
Document Type	20-F/A
Document Period End Date	Dec. 31, 2019
Amendment Flag	true
Amendment Description	This Amendment No. 1 to the Annual Report on Form 20-F for the year ended December 31, 2019, as filed with the U.S. Securities and Exchange Commission on June 5, 2020 (the "Original 20-F"), amends Items 5 (Critical Accounting Policies and Consolidated Statements of Comprehensive Income—Comparison of Years Ended December 31, 2018 and 2019— Income Tax), 15A, 15B, 15D and the audited consolidated financial statements of the Original 20-F. No other information included in the Original 20-F is amended hereby. For presentation purposes only, this Amendment No. 1 restates in its entirety the Original 20-F.
Current Fiscal Year End Date	--12-31
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Is Entity Emerging Growth Company?	false
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	463,979,288
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2019
Entity Shell Company	false
Document Annual Report	true
Document Transition Report	false
Document Shell Company Report	false
Entity Incorporation State Country Code	X1
Entity Interactive Data Current	Yes

Consolidated Statements of Fina

Consolidated Statements of Financial Position - MXN ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 7,446,447	$ 6,987,241
Trade receivables, net	4,186,239	4,802,891
Related parties receivables	13,925	15,731
Loans to related parties		265,875
Recoverable taxes	966,770	2,407,874
Other receivables, net	755,142	684,338
Prepaid expenses	798,400	798,593
Inventory, net	8,243,213	10,138,422
Total current assets	22,410,136	26,100,965
Non-current related parties receivables	648,281	648,281
Non-current loans to related parties	923,257	1,686,115
Non-current inventory, net	960,373	1,147,578
Property, plant and equipment, net	16,737,595	16,970,832
Intangible assets, net	2,260,095	2,270,914
Other non-current assets, net	75,022	29,138
Total assets	44,014,759	48,853,823
Current liabilities:
Short-term debt	5,700	5,936
Accounts payable trade	4,179,830	4,390,413
Related parties payable	241,526	334,591
Other accrued liabilities	1,547,214	2,057,557
Payable tax	193,510	1,833,796
Income tax	1,118,697	369,875
Total current liabilities	7,286,477	8,992,168
Non-current liabilities:
Employee benefits	123,368	81,770
Deferred income tax	3,410,106	3,507,746
Other liabilities	585,031	763,136
Total Non-current liabilities	4,118,505	4,352,652
Total liabilities	11,404,982	13,344,820
Contingencies and Commitments
Stockholders' equity:
Capital stock	2,832,268	2,832,268
Additional paid-in capital	4,575,233	4,575,233
Retained earnings	19,986,881	21,622,790
Repurchase of own capital stock reserve	2,940,332	3,096,390
Cumulative effect by translation of foreign subsidiaries	2,250,263	3,705,691
Total controlling interest	32,584,977	35,832,372
Non-controlling interest	24,800	(323,369)
Total stockholders' equity	32,609,777	35,509,003
Total liabilities and stockholders' equity	$ 44,014,759	$ 48,853,823

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - MXN ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Profit or loss [abstract]
Net sales		$ 34,171,201	$ 35,678,253	$ 28,700,450
Cost of sales		(30,067,141)	(30,563,315)	(23,994,526)
Gross profit		4,104,060	5,114,938	4,705,924
Administrative expenses		(1,637,425)	(1,080,012)	(1,238,943)
Other (expense) income, net		(136,582)	15,052	6,934
Interest income		145,995	312,821	252,291
Interest expense		(55,049)	(16,511)	(54,404)
Foreign exchange loss, net		(784,583)	(146,896)	(654,362)
Income before income taxes		1,636,416	4,199,392	3,017,440
Income taxes	[1]	(3,276,274)	(752,462)	(1,122,809)
Net (loss) income for the year		(1,639,858)	3,446,930	1,894,631
Comprehensive (loss) income for the year:
Translation effects of foreign subsidiaries		(1,103,310)	(615,167)	(529,905)
Total other comprehensive income (loss) for the year, net of income taxes		(1,103,310)	(615,167)	(529,905)
Comprehensive (loss) income for the year, net of tax		(2,743,168)	2,831,763	1,364,726
Net (loss) income attributable to:
Controlling interest		(1,635,909)	3,653,347	1,894,776
Non-controlling interest		(3,949)	(206,417)	(145)
Net (loss) income for the year		(1,639,858)	3,446,930	1,894,631
Comprehensive (loss) income attributable to:
Controlling interest		(3,091,337)	3,046,560	1,368,112
Non-controlling interest		(348,169)	(214,797)	(3,386)
Comprehensive (loss) income for the year, net of tax		$ (2,743,168)	$ 2,831,763	$ 1,364,726
(Loss) income per share:
Weighted average shares outstanding (in thousands of shares)		465,069	489,537	493,918
(Loss) income income per share (controlling interest) (Mexican pesos)		$ (3.52)	$ 7.46	$ 3.84
[1]	For the purpose of determining the effective tax rate, the payments corresponding to taxes from previous years and expenses that were paid by various group companies derived from repair agreements during the 2019 fiscal year were not considered within the income tax expense.

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - MXN ($) $ in Thousands	Capital stock [Member]	Additional paid-in capital [Member]	Retained earnings [Member]	Repurchase of own capital stock reserve [Member]	Cumulative translation effects in foreign subsidiaries [Member]	Total controlling interest [Member]	Non-controlling Interest [Member]	Total
Balance at Dec. 31, 2016	$ 2,832,268	$ 4,602,314	$ 19,074,667	$ 1,988,468	$ 4,839,142	$ 33,336,859	$ (105,186)	$ 33,231,673
Repurchase of own capital stock, net		(22,842)		(256,021)		(278,863)		(278,863)
Comprehensive income (loss)			1,894,776		(526,664)	1,368,112	(3,386)	1,364,726
Balance at Dec. 31, 2017	2,832,268	4,579,472	20,969,443	1,732,447	4,312,478	34,426,108	(108,572)	34,317,536
Increase in reserve			(3,000,000)	3,000,000				484,046
Repurchase of own capital stock, net		(4,239)		(1,636,057)		(1,640,296)		(1,640,296)
Comprehensive income (loss)			3,653,347		(606,787)	3,046,560	(214,797)	2,831,763
Balance at Dec. 31, 2018	2,832,268	4,575,233	21,622,790	3,096,390	3,705,691	35,832,372	(323,369)	35,509,003
Increase in reserve								484,046
Repurchase of own capital stock, net				(156,058)		(156,058)		(156,058)
Comprehensive income (loss)			(1,635,909)		(1,455,428)	(3,091,337)	348,169	(2,743,168)
Balance at Dec. 31, 2019	$ 2,832,268	$ 4,575,233	$ 19,986,881	$ 2,940,332	$ 2,250,263	$ 32,584,977	$ 24,800	$ 32,609,777

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating activities:
Net (loss) income for the year	$ (1,639,858)	$ 3,446,930	$ 1,894,631
Adjustments for:
Depreciation and amortization	1,108,629	1,112,418	1,465,759
Employee benefits	41,598	(10,051)	(7,962)
Allowance for doubtful accounts	5,320	27,904	5,339
Interest income from investing activities	(145,995)	(312,821)	(252,290)
Interest expense from financing activities	55,049	16,511	54,404
Unrealized foreign exchange loss (gain), net	18,030	(6,985)	(35,754)
Income tax	3,276,274	752,462	1,122,809
Total Adjustments	2,719,047	5,026,368	4,246,936
Decrease/(Increase) in Trade receivables	515,726	(1,082,991)	(1,209,134)
(Increase)/Decrease in Related parties receivables	(58,523)	17,465	(41,311)
Decrease/(Increase) in Inventory	1,812,770	(1,098,437)	(887,619)
(Increase) in Other receivables, recoverable taxes and prepaid expenses	(2,147,534)	(1,119,466)	(1,013,274)
(Decrease)/Increase in Accounts payable trade	(151,986)	460,359	1,249,042
(Decrease)/Increase in Related parties payables	(93,065)	90,806	39,604
(Decrease)/Increase in Accounts payable other and accrued liabilities and taxes other than income taxes	(1,553,682)	929,780	800,111
Net cash flows provided by operating activities	1,042,753	3,223,884	3,184,355
Investing activities:
Acquisition of property, plant and equipment	(1,271,420)	(1,994,465)	(3,039,501)
Decrease in other non-current assets	(52,293)	159,732	(60,131)
Decrease in Other investments		88,947	339,476
Cash paid for Business acquisition, net		(638,976)
Loans granted to related parties		(477,064)	(412,443)
Collection of loans to related parties	1,071,032	1,939,366
Interest income collected	145,995	102,307	54,237
Net cash flows (used) provided by investing activities	(106,686)	(820,153)	(3,118,362)
Financing activities:
Repurchase and placement of own capital stocks, net	(156,058)	(1,640,296)	(278,863)
Loans received from related parties		(984,623)	(41,027)
Interest expense	(55,049)	(16,511)	(54,404)
Net cash flows used in financing activities	(211,107)	(2,641,430)	(374,294)
Increase (decrease) in cash and cash equivalents	724,960	(237,699)	(308,301)
Cash and cash equivalents at beginning of year	6,987,241	7,203,604	7,536,534
Effects of exchange rate changes on the balance of cash and cash equivalents held in foreign currencies	(265,754)	21,336	(24,629)
Cash and cash equivalents at end of year	$ 7,446,447	$ 6,987,241	$ 7,203,604

Nature of business

Nature of business	12 Months Ended
	Dec. 31, 2019
Disclosure of nature of business [Abstract]
Nature of business	1. Nature of business Grupo Simec, S.A.B. de C.V. is a stock exchange corporation variable equity, The main activity of Grupo Simec, S.A.B. de C.V. and its subsidiaries (Simec or the Company) is manufacturing, processing and distribution of steel and steel alloys products in Mexico, the United States of America (USA) and Brazil. Shares of the Company are listed on the Mexican Stock Exchange (BMV) and the New York Stock Exchange (NYSE).

Significant events

Significant events	12 Months Ended
	Dec. 31, 2019
Disclosure of detailed information about business combination [abstract]
Significant events	2. Significant events a. On December 5, 2017, Grupo Simec, S. A. B. de C. V. and Simec International 7, S.A. de C. V. (a subsidiary company), acquired 2,000 class "I" shares of a company named Señales del Norte S.A. de C.V., representing 100% of the fixed portion of that company’s capital stock and 3,908,782 shares class "II" representing 100% of the variable portion of that company’s capital stock. These shares were purchased on $122.66 million pesos. After the purchase of those shares Señales del Norte S.A. de C.V. came under the control of Grupo Simec, S.A.B. de C.V. From that date the company Señales del Norte S.A. de C.V., is consolidated in the financial statements. Subsequent to December 31, 2017 on March 13, 2018 the name of Señales del Norte S.A. de C.V. was changed to "Siderurgicos Noroeste, S.A. de C.V.". b. On May 1, 2018, one steel mill was acquired in Brazil from ArcelorMittal, which is located in Cariacica, Espiritu Santo and has a production capacity of 600 thousand tons a year. Another steel mill is being rented from ArcelorMittal in Itauna, Minas Gerais with a production capacity of 120 thousand tons a year. Upon closing the transaction, the group significantly increased its participation in the long steel market in Brazil; a confidentiality agreement was signed for this operation. c. On January 1, 2019 Grupo Simec, S.A.B. of C.V. increased its shareholding percentage in SimRep Corporation to 99.41%. The Company acquired 83,862 common shares of SimRep Corporation at a price of USD $ 3,454 each, for total consideration of USD $ 289,660, such consideration was provided through the conversions of loans payable to the Company by SimRep.

Application of new and amended

Application of new and amended standards and interpretations and standards not in force yet	12 Months Ended
	Dec. 31, 2019
Application of new and amended standards and interpretations and standards not in force yet	3. Application of new and amended standards and interpretations and standards not in force yet The consolidated financial statements of Grupo Simec, S.A.B. de C.V. and its Subsidiaries for the periods presented have been prepared in accordance with the International Financial Reporting Standards (IFRS) issued by the International Accounting Standards Board (IASB). IFRS also includes all current International Accounting Standards (IAS), in force, as well as all related interpretations issued by the IFRS Interpretations Committee (IFRIC), including those issued previously by the Standing Interpretations Committee. The company applied the effective IFRS as of December 31, 2019. International Financial Reporting Standards, not in force yet. Below are the rules and amendments that could have an effect on Simec's financial information, which were issued by the IASB, but are not in effect at the date of these financial statements. Amendments applicable from 2020: a) Conceptual framework. In March 2018, the IASB issued a new revised version of the Conceptual Framework for financial reporting. Which contains updated definitions of assets and liabilities in the financial statements. In addition, new concepts and guidance on the following topics have been added: I. Measurement, including factors to consider when selecting a measurement basis. II. Presentation and disclosure, including when to classify income and expenses into other comprehensive income III. The reporting entity; and IV. When assets and liabilities are removed from the financial statements. The Conceptual Framework also clarifies the roles of management, prudence, and measurement uncertainty in financial reporting. Several IFRSs have also been amended by references to the Conceptual Framework. Amendments to IFRSs for changes to the Conceptual Framework update some of those references and citations to refer to the Conceptual Framework for Financial Reporting issued in 2018 and make other amendments to clarify which version of The Conceptual Framework is mentioned in each document. b) Amendment to IFRS 3.- Business combination. This amendment clarifies the definition of business, with the aim of helping entities determine whether a transaction should be accounted for as a business combination or as an asset acquisition. The amendment consists of the following: I. It clarifies that, to be considered a business, an acquired set of activities and assets must include, as a minimum, a contribution and a substantive process, which together contribute significantly to the ability to create products. II. It eliminates the assessment of market participants to determine if they are able to replace any missing inputs or processes and continue to produce products. III. Adds guidance and illustrative examples to help entities determine if a substantive process has been acquired. IV. Restricts definitions of a business and products, by focusing on the goods and services provided to customers and removing the reference to the ability to reduce costs. V. Adds an optional concentration test that allows for a simplified assessment of whether an acquired set of activities and assets is not a business. c) Amendments to IAS 1.- Presentation of financial statements and IAS 8.- Accounting policies, changes in estimates and accounting errors. These amendments clarify the definition of "Material" and, consequently, modifications are made to a series of other standards by the definition of Material. The amendments improve the understanding of the definition of material by: I) to line up the wording of the definition in IFRS Standards and the Conceptual Framework, to avoid the possibility of confusion arising from different definitions. II) Incorporate the support requirements in IAS 1, in the definition to give them more importance and clarify their applicability; and III) Provide existing information on the definition of Material, along with the definition. d) Amendments to IFRS 9.- Financial instruments, IAS 39.- Financial instruments: recognition and measurement and IFRS 7.- Financial instruments: disclosure information. These amendments change some specific requirements of hedge accounting to provide an exemption from the potential effects of the uncertainty caused by reference interest rate reform, such as the forthcoming elimination of interbank offered rates (IBOR). In addition, the modifications require that an entity provide additional information to investors about their hedging relationships that are directly affected by any of these uncertainties. Simec is evaluating the impact that these modifications will have on its financial statements.

Basis of preparation and presen

Basis of preparation and presentation of the consolidated financial statements	12 Months Ended
	Dec. 31, 2019
Disclosure of basis of preparation and presentation of the consolidated financial statements [Abstract]
Basis of preparation and presentation of the consolidated financial statements	4. Basis of preparation and presentation of the consolidated financial statements The consolidated financial statements have been prepared in accordance with IFRS as discussed in Note 3, based on historical costs. Historical cost is generally based on the fair value of the consideration given in exchange for assets. Consolidation basis Within the consolidation process, adjustments are made to the financial statements of the subsidiaries to adapt their accounting policies so that they are aligned with those used by the Company. All significant intercompany transactions and balances between companies are eliminated during consolidation. Changes in investments in subsidiaries of the Company that do not result in a loss of control are recorded as equity transactions. The book value of the company's non-controlling investments and shares is adjusted to reflect changes in the corresponding investments in subsidiaries. Any difference between the amount by which non-controlling shares are adjusted and the fair value of the consideration paid or received is recognized directly and is attributed to the owners of the company. When the company loses control of a subsidiary, the profit or loss in the provision is calculated as the difference between (i) the sum of the fair value of the consideration received and the fair value of any retained ownership interest and (ii) the prior book value of assets (including commercial credit) and liabilities of the subsidiary and any non-controlling participation. The amounts previously recognized in other comprehensive income items related to the subsidiary are recorded (that is, reclassified to profit or loss or transferred directly to retained earnings) in the same manner established for the case of the disposal of significant assets or liabilities. The fair value of any investment retained by the former subsidiary on the date of loss of control is regarded as the fair value for initial recognition in its subsequent accounting treatment, according to IAS 39, financial instruments: Recognition and valuation, or, where appropriate, the cost in the initial recognition of an investment in an associate or entity under joint control. As of December 31, 2019, and 2018, the subsidiaries of Grupo Simec, S.A.B. de C.V. included in the consolidation are the following: Percentage of equity owned Subsidiaries established in Mexico: 2 0 1 9 2 0 1 8 Compañia Siderurgica de Guadalajara, S.A. de C.V. 99.99% 99.99% Arrendadora Simec, S.A. de C.V. 100.00% 100.00% Simec International, S.A. de C.V. 100.00% 100.00% Compañia Siderurgica del Pacifico, S.A. de C.V. 99.99% 99.99% Coordinadora de Servicios Siderurgicos de Calidad, S.A. de C.V. (8) 100.00% 100.00% Industrias del Acero y del Alambre, S.A. de C.V. 99.99% 99.99% Procesadora Mexicali, S.A. de C.V. 99.99% 99.99% Servicios Simec, S.A. de C.V. 100.00% 100.00% Sistemas de Transporte de Baja California, S.A. de C.V. 100.00% 100.00% Operadora de Servicios Siderurgicos de Tlaxcala, S.A. de C.V. (8) 100.00% 100.00% Operadora de Metales, S.A. de C.V. (8) 100.00% 100.00% Administradora de Servicios Siderurgicos de Tlaxcala, S.A. de C.V. (8) 100.00% 100.00% CSG Comercial, S.A. de C.V. 99.95% 99.95% Operadora de Servicios de la Industria Siderurgica ICH, S.A. de C.V. 100.00% 100.00% Corporacion Aceros DM, S.A. de C.V. and subsidiaries (1) 100.00% 100.00% Acero Transportes San, S.A. de C.V. (1) 100.00% 100.00% Simec Acero, S.A. de C.V. (8) 100.00% 100.00% Corporacion ASL, S. A. de C.V. 99.99% 99.99% Simec International 6, S.A. de C.V. (8) 100.00% 100.00% Simec International 7, S.A. de C.V. 99.99% 99.99% Simec International 9, S.A.P.I. de C.V. 100.00% 100.00% Corporativos G&DL, S.A. de C.V. (8) 100.00% 100.00% Orge, S.A. de C.V. 99.99% 99.99% Siderurgica del Occidente y Pacifico, S.A. de C.V. 100.00% 100.00% RRLC, S.A.P.I. de C.V. (8) 95.10% 95.10% Grupo Chant, S.A.P.I. de C.V. (8) 97.61% 97.61% Aceros Especiales Simec Tlaxcala, S.A. de C.V. 100.00% 100.00% Recursos Humanos de la Industria Siderurgica de Tlaxcala, S.A. de C.V. 100.00% 100.00% GSIM de Occidente S.A. de C.V. 100.00% 100.00% Fundiciones de Acero Estructural, S.A. de C.V. 100.00% 100.00% Siderúrgicos Noroeste, S.A. de C.V. (9) 100.00% 100.00% Simec Siderúrgico, S.A. de C.V. (10) 100.00% 100.00% Subsidiaries established in foreign countries: SimRep Corporation and Subsidiaries (3) (4) (5) 99.41% 50.22% Pacific Steel, Inc. (4) 100.00% 100.00% Pacific Steel Projects, Inc. (4) 100.00% 100.00% Simec Steel, Inc. (4) 100.00% 100.00% Simec USA, Corp. (4) 100.00% 100.00% Undershaft Investments, NV. (6) 100.00% 100.00% GV do Brasil Industria e Comercio de Aço LTDA (7) 100.00% 100.00% Companhia Siderurgica do Espiritu Santo S.A. (10) (7) 100.00% 100.00% GS Steel B.V. (2) Liquidated 100.00% (1) Companies located in San Luis Potosi. For purposes of this report constitute the “Grupo San”. (2) Company established in Netherlands. (3) ICH owns 0.59% of the shares in this company at December 31, 2019. (4) Companies established in the United States of America, except a subsidiary of SimRep which is established in Canada. (5) SimRep as an individual company has no significant operations or assets, except for its investment in Republic Steel. For purposes of this report, these companies are named “Republic”. (6) Company established in Curaçao. (7) Company established in Brazil. (8) Companies that have lost the entire capital stock, except Operadora de Metales, S.A. de C.V. which only have lost 2/3 of their capital stock. (9) Company incorporated in 2017. (10) Company incorporated in 2018. Summary of the main accounting policies a. Conversion of foreign subsidiaries financial statements – The Effects of Changes in Foreign Exchange Rates The U.S. dollar (US Dollar or USD$) was considered as the functional currency of all the U.S. subsidiaries and Brazilian real for subsidiaries established in Brazil; therefore, the financial statements of these subsidiaries abroad were converted to Mexican pesos applying: - The exchange rates at the balance sheet date, to all assets and liabilities. - The historical exchange rate at stockholders’ equity accounts and revenues, costs and expenses. The conversion differences are carried directly to the consolidated statements of comprehensive income as other comprehensive income under the caption translation effects of foreign subsidiaries. Relevant exchange rates used in the conversion of the financial statements of foreign subsidiaries were as follows (Mexican pesos per one U.S. dollar): Current exchange rate as of December 31, 2019 18.87 Current exchange rate as of December 31, 2018 19.66 Average exchange rate for the year ended December 31, 2019 (*) 19.26 Average exchange rate for the year ended December 31, 2018 (*) 19.23 Current exchange rate as of May, 27 of 2020 22.56 (*) Average exchange rate used to translate revenues, costs and expenses of the companies mentioned above. b. Business combinations – At the date of acquisition, the identifiable assets acquired and the liabilities assumed are recognized at their fair value, except: - Deferred tax assets or liabilities and liabilities or assets related to employee benefit arrangements, which are recognized and measured in accordance with IAS 12, Income Taxes, Employee Benefits, - Assets (or disposal groups) that are classified as held for sale in accordance with IFRS 5, Non- Assets Held for Sale and Discontinued Operations, Any excess of the cost of acquisition for the Group's interest in the net fair value of the identifiable assets, liabilities and contingent liabilities of the associated company recognized at the date of acquisition is recognized as goodwill. Goodwill is included in the carrying amount of the investment and is assessed for impairment annually. Any excess of the Group's interest in the net fair value of the assets, liabilities and contingent liabilities over the cost of acquisition, after the reassessment, is immediately recognized in profit and loss. When the consideration transferred by the Company in a business combination includes assets or liabilities resulting from a contingent consideration arrangement, the contingent consideration is measured at its acquisition-date fair value and later adjustments to the consideration are recognized against goodwill, providing that it has arisen from reliable information on the fair value at the acquisition date and occur during the ‘measurement period’ (which cannot exceed one year from the acquisition date). All other subsequent adjustments are recognized in profit or loss. The subsequent accounting for changes in the fair value of the contingent estimates that do not qualify as measurement period adjustments depends on how the contingent consideration is classified. Contingent consideration that is classified as equity is not remeasured at subsequent reporting dates. Contingencies classified as assets or liabilities are remeasured at subsequent reporting dates in accordance with IAS 37, Provisions, Contingent Liabilities and Contingent Assets When a business combination is achieved in stages, the Company’s previously held equity interest in the acquiree are remeasured to fair value at the acquisition date (i.e. the date when the Company obtains control) and the resulting gain or loss, if any, is recognized in profit or loss. Amounts arising from interests in the acquiree prior to the acquisition date that have been previously recognized in other comprehensive income (loss) are reclassified to profit or loss where such treatment would be appropriate if that interest were disposed of. If the initial accounting for a business combination is incomplete by the end of the reporting period in which the combination occurs, the Company reports provisional amounts for the items for which the accounting is incomplete. Those provisional amounts are adjusted during the measurement period, or additional assets or liabilities are recognized, to reflect new information obtained about facts and circumstances that existed at the acquisition date that, if known, would have affected the amounts recognized at that date. c. Cash and cash equivalents and temporary investments – Temporary investments in equity instruments are measured at the fair value prevailing at the date of the financial statements. Subsequent changes in the fair value are recognized in profit or loss. d. Allowances for doubtful accounts – e. Inventories and cost of sales – The Company classifies raw material inventory in the Consolidated Statements of Financial Position based on its expected consumption period, presenting as long-term inventories those which in accordance with historical data and production trends will not be consumed in the short-term (one year). The Company classified as long-term inventory certain parts and rollers that, according to historical data and trends, showing that such inventories will not be consumed in the short-term. The Company utilizes coke, a form of coal, as a raw material input to fuel its blast furnace which has been inactive in Lorain, Ohio USA plant (see Note 9). The Company has 136,541 metric tons (MT) of coke inventory valued at 747 million Mexican pesos (average of USD$ 290/MT) on hand at December 31, 2019 and 136,541 MT of coke inventory valued at 953 million Mexican pesos (average of USD$ 355.00/MT) on hand at December 31, 2018 that is classified as long-term in the accompanying Consolidated Statements of Financial Position. The Company follows the practice of providing a reserve for slow-moving inventory, considering the total of products and raw materials (including coke) with a turnover above one year, which is recorded in the statement of financial position and against account is the cost of sales. The cost of sales of the Company includes inventory costs, outbound freight charges, purchasing and receiving costs, inspection costs, and warehousing costs in cost of goods sold. Vendor payment incentives are recorded as a reduction to cost of goods sold. f. Property plant and equipment – r An item of property, plant and equipment is derecognized upon disposal or when no future economic benefits are expected to arise from the continued use of the asset. Any gain or loss arising on the disposal or retirement of an item of property, plant and equipment is determined as the difference between the sales proceeds and the carrying amount of the asset and is recognized in profit or loss. The initial estimated useful lives of the Company’s main assets are as follows: Years Buildings 10 to 65 Machinery and equipment 5 to 40 Transportation equipment 4 Furniture, mixtures and computer equipment 3 to 10 Repair and maintenance costs that significantly increase productive capacity or extend the useful lives of existing plant and equipment are capitalized. Supplies, comprising of spare parts and consumables for internal use are classified under property, plant and equipment and expensed as incurred in the manufacturing process. All other repair and maintenance costs are expensed as incurred. Capital expenditures for projects that cannot be put into use immediately are included in constructions and machinery in-progress. When constructions and machinery in-progress are completed, they are transferred to depreciable assets. g. Leases – h. Costs for loans – Investment income earned on the temporary investment of specific loans pending their expenditure on qualifying assets is deducted from the costs for loans eligible for capitalization. All other costs for loans are recognized in profit or loss in the period in which they are incurred. i. Intangible assets – Expenditure on research activities is recognized as an expense in the period in which it is incurred. An internally-generated intangible asset arising from development (or from the development phase of an internal project) is recognized if, and only if, all of the following have been demonstrated: - The technical feasibility of completing the intangible asset so that it will be available for use or sale; - The intention to complete the intangible asset and use or sell it; - The ability to use or sell the intangible asset; - How the intangible asset will generate probable future economic benefits; - The availability of adequate technical, financial and other resources to complete the development and to use or sell the intangible asset; and - The ability to measure reliably the expenditure attributable to the intangible asset during its development. The amount initially recognized for internally-generated intangible assets is the sum of the expenditure incurred from the date when the intangible asset first meets the recognition criteria listed above. Where no internally-generated intangible asset can be recognized, development expenditure is recognized in profit or loss in the period in which it is incurred. Subsequent to initial recognition, internally-generated intangible assets are reported at cost less accumulated amortization and accumulated impairment losses, on the same basis as intangible assets that are acquired separately. Intangible assets acquired in a business combination and recognized separately from goodwill are initially recognized at their fair value at the acquisition date (which is regarded as their cost). Subsequent to initial recognition, intangible assets acquired in a business combination are reported at cost less accumulated amortization and accumulated impairment losses, on the same basis as intangible assets that are acquired separately. An intangible asset is derecognized on disposal, or when no future economic benefits are expected from use or disposal. Gains or losses arising from derecognition of an intangible asset, measured as the difference between the net disposal proceeds and the carrying amount of the asset, are recognized in profit or loss. j. Goodwill – k. Impairment of tangible and intangible assets other than goodwill – An impairment loss is recognized immediately in profit or loss, unless the relevant asset is carried at a revalued amount, in which case the impairment loss is treated as a revaluation decrease. Where an impairment loss subsequently reverses, the carrying amount of the asset (or a cash-generating unit) is increased to the revised estimate of its recoverable amount, but so that the increased carrying amount does not exceed the carrying amount that would have been determined had no impairment loss been recognized for the asset (or cash-generating unit) in prior years. For purposes of allocation of goodwill when there is business combination will be distributed among each of the cash generating units of the acquiring entity, expected synergy benefits. A reversal of an impairment loss is recognized immediately in profit or loss and allocated to the assets of that unit, the carrying amount of an asset other than goodwill attributable to a reversal of an impairment loss of value shall not exceed the carrying amount that would have been obtained if had not recognized an impairment loss in value for the asset in prior periods. Unless the related asset is recognized at a revalued amount, in which case the reversal of the impairment loss is treated as a revaluation increase. l. Provisions The amount recognized as a provision is the best estimate of the consideration required to settle the present obligation at the balance sheet date, taking into account the risks and uncertainties surrounding the obligation. Where a provision is measured using the cash flows estimated to settle the present obligation, it´s carrying amount is the present value of those cash flows. m. Employee benefits – The retirement benefit liability is determined based on the present value of the defined benefit obligation at the date of the statement of financial position. Any compensation included in the determination of the liability premiums corresponds to seniority premiums for retirement. Actuarial gains and losses are recognized on profit or loss for the year. The retirement benefit liability and the related net cost of the period are determined under the projected unit credit method based on projected salaries and certain assumptions determined by independent actuaries. Liabilities for employee benefits recognized in the consolidated statement of financial position represent the present value of the defined benefit obligation. Republic operates various employee benefit plans. The contributions to these benefit plans are either contractually determined by the terms of a collective bargaining agreement with the United Steelworkers or they are under the terms of a defined contribution plan. Accordingly, the company pays fixed contributions to separate entities and they are expensed in the period in which the employees rendered the services entitling them to the benefits. n. Earnings per share – o. Income taxes – - Current tax - Deferred tax The carrying amount of deferred tax assets is reviewed at each balance sheet date and reduced by a valuation allowance to the extent that it is no longer probable that sufficient taxable earnings will be available to allow all or part of the asset to be recovered. Deferred tax assets and liabilities are computed using the tax rates that are expected to apply in the period in which the liability is settled or the asset realized, based on tax rates (and tax laws) that have been enacted or substantively enacted by the balance sheet date. The effects of changes in the statutory rates are accounted for in the period that includes the enactment date. The measurement of deferred tax liabilities and assets reflects the tax consequences that would follow from the manner in which the Company expects, at the reporting date, to recover or settle the carrying amount of its assets and liabilities. Deferred tax assets and liabilities are offset when there is a legally enforceable right to set off current tax assets against current tax liabilities and when they relate to income taxes levied by the same taxation authority and the Company intends to settle its current tax assets and liabilities on a net basis. The Company follows the practice of recognizing the benefit from the amortization of acquired or generated tax losses in current earnings that are amortized. - Current and deferred tax for the period - Interests on recoverable tax balances p. Foreign currencies – Exchange differences are recognized in profit or loss in the period in which they arise except for: - Exchange differences on foreign currency borrowings relating to assets under construction for future productive use, which are included in the cost of those assets when they are regarded as an adjustment to interest costs on those foreign currency borrowings; - Exchange differences on transactions entered into in order to hedge certain foreign currency risks; and - Exchange differences on monetary items receivable from or payable to a foreign operation for which settlement is neither planned nor likely to occur (therefore forming part of the net investment in the foreign operation), which are recognized initially in other comprehensive income and reclassified from equity to profit or loss on sell all or part of the net investment. q. Financial instruments – Financial assets and financial liabilities are initially measured at fair value. Transaction costs that are directly attributable to the acquisition or issue of financial assets and financial liabilities are added to or deducted from the fair value of the financial assets or financial liabilities, as appropriate, on initial recognition. Transaction costs directly attributable to the acquisition of financial assets or financial liabilities at fair value through profit or loss are recognized immediately in profit or loss. r. Financial assets – The effective interest method is a method of calculating the amortized cost of a debt instrument and of allocating interest income over the relevant period. The effective interest rate is the rate that exactly discounts estimated future cash receipts (including all fees and points paid or received that form an integral part of the effective interest rate, transaction costs and other premiums or discounts) through the expected life of the debt instrument, or, (where appropriate), a shorter period, to the net carrying amount on initial recognition. The Company does not have financial assets classified as “available-for-sale financial assets”. Loans and receivables are non-derivative financial assets with fixed or determinable payments that are not quoted in an active market. Loans and accounts receivable are measured at amortized cost using the effective interest method, less any impairment. Financial assets are assessed for indicators of impairment at the end of each reporting period. Financial assets are considered to be impaired when there is objective evidence that, as a result of one or more events that occurred after the initial recognition of the financial asset, the estimated future cash flows of the investment have been affected. Objective evidence of impairment could include: - Significant financial difficulty of the issuer or counterparty; - Breach of contract, such as a default or delinquency in interest or principal payments; - It becoming probable that the borrower will enter bankruptcy or financial re-organization; or - The disappearance of an active market for that financial asset because of financial difficulties. For certain categories of financial assets, such as trade receivables, assets that are assessed not to be impaired individually are, in addition, assessed for impairment on a collective basis. Objective evidence of impairment for a portfolio of receivables could include the Company’s past experience of collecting payments, as well as observable changes in national or local economic conditions that correlate with default on receivables. For financial assets carried at amortized cost, the amount of the impairment loss recognized is the difference between the asset’s carrying amount and the present value of estimated future cash flows, discounted at the financial asset’s original effective interest rate. The carrying amount of the financial asset is reduced by the impairment loss directly for all financial assets with the exception of trade receivables, where the carrying amount is reduced through the use of an allowance account. When a trade receivable is considered uncollectible, it is written off against the allowance account. Subsequent recoveries of amounts previously written off are credited against the allowance account. Changes in the carrying amount of the allowance account are recognized in profit or loss. Except for equity instruments available for sale, if, in a subsequent period, the amount of the impairment loss decreases and the decrease can be related objectively to an event occurring after the impairment was recognized, the previously recognized impairment loss is reversed through profit or loss to the extent that the carrying amount of the investment at the date the impairment is reversed does not exceed what the amortized cost would have been had the impairment not been recognized. The Company recognizes a financial asset only when the contractual rights to the cash flows from the asset expire, or when it transfers the financial asset and substantially all the risks and rewards of ownership of the asset to another entity. If the Company neither transfers nor retains substantially all the risks and rewards of ownership and continues to control the transferred asset, the Company recognizes its retained interest in the asset and an associated liability for amounts it may have to pay. If the Company retains substantially all the risks and rewards of ownership of a transferred financial asset, the Company continues to recognize the financial asset and also recognizes a collateralized borrowing for the proceeds received. On recognition totally a financial asset, the difference between the carrying amount of an asset and the sum of the consideration received and receivable and the cumulative gain or loss that had been recognized in other comprehensive income and accumulated in equity is recognized in profit or loss. When the financial asset is partially derecognized (when the Company retains the option to repurchase part of a transferred asset, or retains residual interest that does not result in the retention of substantial risks and rewards of ownership and the Company retains control), the Company will distribute the initial value of the financial asset between the part that continues to be recognized and the part that is no longer recognized based on the fair values ​​ of various parts as of the transfer date. The difference between the book value assigned to the part that is no longer recognized and the sum of the consideration received by such part; and any accumulated profit or loss assigned to it that has been recognized in other comprehensive income will be recognized in the consolidated income statement. s. Financial liabilities – Financial liability at fair value with changes through profit or loss is a financial liability classified as held for trading or it is designated as at fair value with changes through profit or loss. A financial liability is classified as held for trading if: - It has been acquired principally for the purpose of repurchasing it in the near term; - On initial recognition, it is part of a portfolio of identified financial instruments that the Company manages together and has a recent actual pattern of short-term profit-taking; or - It is a derivative that has not been designated as a hedging instrument and fulfils the condition to be effective. A financial liability other than a financial liability held for trading may be designated as at fair value through profit or loss upon initial recognition if: - Such designation eliminates or significantly reduces a measurement or recognition inconsistency that would otherwise arise; - The financial liability forms part of a group of financial assets or financial liabilities or both, which is managed and its performance is evaluated on a fair value basis, in accordance with the Company’s documented risk management or investment strategy, and information about the grouping is provided internally on that basis; or - It forms part of a contract containing one or more embedded derivatives, and IAS 39, Financial Instruments: Recognition and Measurement, - Financial liabilities at fair value through profit or loss are recorded at fair value, with any gains or losses arising on remeasurement recognized in profit or loss. The net gain or loss recognized in profit or loss incorporates any interest paid on the financial liability and is included in the ‘other gains and losses' line item in the consolidated statement of comprehensive income. - Other financial liabilities including borrowings are subsequently measured at amortized cost using the effective interest method. The effective interest method is a method of calculating the amortized cost of a financial liability and of allocating interest expense over the relevant period. The effective interest rate is the rate that exactly discounts estimated future cash payments through the expected life of the financial liability, or (where appropriate a shorter period), to the net carrying amount on initial recognition. - The Company derecognizes financial liabilities when, and only when, the Company’s obligations are discharged, cancelled or expire. The difference between the carrying amount of the financial liability derecognized and the consideration paid and payable is recognized in profit or loss at that time. t. Derivative financial instruments – These derivatives are initially recognized at fair value at the date the derivative contracts are entered into and subsequently are remeasured to the fair value at the end of reporting period. The resulting gain or loss is recognized in profit or loss immediately unless the derivative is designated and effective as a hedging instrument, in which event the timing of the recognition in profit or loss depends on the nature of the hedge relationship. To mitigate the risks associated with changes in natural gas prices occurring naturally as a result of the supply and demand on international markets, the Company uses natural gas cash-flow exchange contracts or natural gas swaps to offset fluctuations in the price of natural gas, whereby the Company receives a floating price and pays a fixed price. Fluctuations in natural gas prices from volumes consumed are recognized as part of the Company’s operating cost. At the inception of the hedge relationship, the Company documents the relationship between the hedging instrument and the hedged item, along with its risk management objectives and its strategy for undertaking various hedge transactions. Furthermore, at the inception of the hedge and on an ongoing basis, the Company documents whether the hedging instrument is highly effective in offsetting exposure to changes in fair values or cash flows of the hedged item attributable to the hedged risk. The effective portion of changes in the fair value of derivatives that are designated and qualify as cash flow hedges is recognized in other comprehensive income and accumulated under the heading of fair value of derivative financial instruments, The Company periodically evaluates the changes in cash flows of the derivative instrument to analyze if the swaps are highly effective for mitigating the exposure to natural gas price fluctuations. A hedge instrument is considered to be highly effective when changes in its fair value or cash flows of the primary position are compensated on a regular or cumulatively basis, by changes in fair value or cash flows of the hedging instrument in a range between 80% and 125%. Amounts previously recognized in other comprehensive income are reclassified to profit or loss in the periods when the hedged item is recognized in profit or loss, in the same line of the consolidated statement of comprehensive income as the recognized hedged item. However, when the hedged forecasted transaction results in the recognition of a non-financial asset or a non-financial liability, the gains and losses previously accumulated in equity are transferred from equity and included in the initial measurement of the cost of the non-financial asset or non-financial liability. Hedge accounting is discontinued when the Company revokes the hedging relationship, when the hedging instrument expires or is sold, terminated, or exerted, or when it no longer qualifies for hedge accounting. Any gain or loss accumulated from the hedge instrument that had been recognized in other comprehensive income a

Critical accounting judgments a

Critical accounting judgments and key sources of estimates	12 Months Ended
	Dec. 31, 2019
Disclosure of Critical Accounting Judgments and Key Sources of Estimation [Abstract]
Critical accounting judgments and key sources of estimates	5. Critical accounting judgments and key sources of estimates In the application of the Company’s accounting policies, which are described in Note 4, management is required to make judgments, estimates and assumptions regarding the carrying amounts of assets and liabilities. The estimates and associated assumptions are based on historical experience, the future and other factors that are considered to be relevant. Actual results may differ from these estimates. The estimates and underlying assumptions are reviewed on an ongoing basis and the resulting changes are recorded on the period in which the estimate has been modified, if such change affects only that period or in future periods. a. Critical accounting judgments – The following are the critical judgments in the application of accounting policies, apart from those involving estimations, that the management have made in the process of applying the Company’s accounting policies and that have the most significant effect on the amounts recognized in the financial statements: - Functional currency – b. Key information for estimates – The following is the key assumptions, and other key sources of estimation at the consolidated balance sheet date, that have a significant risk of causing a material adjustment to the carrying amounts of assets and liabilities within the following financial year. - Allowance for doubtful accounts - Net realizable value of inventory - Impairment of long-lived assets in use - Estimating useful lives and residual values of property, plant and equipment - Impairment of goodwill – - Employee Benefits A change in the economic, employment and fiscal conditions could modify the estimates. - Contingencies – - Deferred income tax assets – - Valuation of financial instruments – The Company’s management believes that the chosen valuation techniques and assumptions used are appropriate in determining the fair value of derivative financial instruments. At December 31, 2019 and 2018 the Company has not derivative financial instruments.

Cash and cash equivalents and o

Cash and cash equivalents and other investments	12 Months Ended
	Dec. 31, 2019
Cash and cash equivalents [abstract]
Cash and cash equivalents and other investments	6. Cash and cash equivalents and other investments Cash and cash equivalents are as follows: December 31, 2 0 1 9 2 0 1 8 Cash $ 898,394 $ 514,166 Cash equivalents (1) 6,548,053 6,473,075 $ 7,446,447 $ 6,987,241 (1) Cash equivalents are investments with initial original maturities of less than 90 days and consist primarily of Treasury Bills issued by the United States Treasury Department.

Trade receivables - Net

Trade receivables - Net	12 Months Ended
	Dec. 31, 2019
Trade and other receivables [abstract]
Trade receivables - Net	7. Trade receivables – Net The average collection period on sales of goods is between 30 and 60 days. No interest is charged on the outstanding accounts receivables from clients. The Company has recognized an allowance for doubtful accounts to show the possible financial loss caused by the inability of customers to make the corresponding payments. Allowances for doubtful accounts are calculated based on several factors including price adjustments, likelihood of recovery, aging and historical experience. Credit limits and credit scores of customer are reviewed twice a year. On December 31, 2019 and 2018 there were no customers who represent more than 5% of the total balance of trade receivables. The Company does not hold any collateral or other credit enhancements over these balances nor does it have a legal right of offset against any amounts owed by the Company to the counterparty. Trade receivables disclosed below include amounts that are past due at the end of the reporting period for which the Company has not recognized an allowance for doubtful debts because there has not been a significant change in credit quality and the amounts are still considered recoverable. The Company does not hold any collateral. In general terms, the accounts receivable does not show impairment. Age of net receivables that are past due were as follows: At December 31, 2 0 1 9 2 0 1 8 30 - 60 days $ 279,048 $ 221,996 61 - 90 days 121,790 57,119 91 + days 535,955 188,262 Total $ 936,793 $ 467,377 During the years ended December 31, 2019 and 2018, the movement in the allowance for doubtful accounts was as follows: 2 0 1 9 2 0 1 8 Balance at beginning of year $ 231,778 $ 199,855 Provisions 4,529 7,486 Recoveries (63) Translations effects 854 24,437 Balance at end of year $ 237,098 $ 231,778 In determining the nonrecoverable portion of accounts receivable, the Company considers any change in the credit quality of the trade receivable from the date credit was initially granted up to the end of the reporting period. The concentration of credit risk is minimum, due to the fact that the customer base is large and unrelated. Republic made an agreement with a third party ("buyer") to carry out a factoring of accounts receivable to customers. The maximum established amount of advances related to the allocation of accounts is USD $ 30 million. The remaining amount between the received and the value of the invoices is kept in reserve by the "buyer". The payments of the funds retained in reserve minus a discount will be made by the buyer within 4 days after receiving the collection payments related to each assigned account. Said discount will be made on the total of the invoice and is in a range of 1% if the payment is made within 15 days (from the advance date) or up to 3.75% if paid within 90 days and 1% for every additional fifteen days until the account is settled. This discount is recognized as an interest expense in the consolidated statement of comprehensive income. The purchaser has no recourse against the Company if payments are not received due to insolvency of an account debtor within 120 days of the invoice date. However, while the facility calls for the sale, assignment, transfer and conveyance of all rights, title and interests in the selected accounts receivable, the purchaser may put and charge-back any receivable not paid to the purchaser within 90 days of purchase for any reason besides insolvency of the account debtor. As collateral for the repayment of advances for receivables sold, the purchaser has a priority security interest in all accounts receivable of the Company (as defined by the Uniform Commercial Code of the United States of America). In 2019, the Company sold a nominal amount of USD $ 11.2 million ($23.1 million in 2018) of accounts receivable. The discount fees incurred by this contract were approximately USD $ 0.3 million in 2019 and USD$ 0.5 in 2018. These fees were included in expenses for interest in the Consolidated Statement of Comprehensive Income. As of December 31, 2019, and 2018 the buyer has USD$ 0.0 million and USD$ 2.7 million, respectively, of receivables that have not been recovered by the buyer.

Recoverable taxes

Recoverable taxes	12 Months Ended
	Dec. 31, 2019
Disclosure of Recoverable taxes [Abstract]
Recoverable taxes	8. Recoverable taxes December 31, 2 0 1 9 2 0 1 8 Valued Added Tax $ 781,082 $ 2,262,172 Income Tax 185,243 137,408 Other 445 8,294 $ 966,770 $ 2,407,874

Inventories

Inventories	12 Months Ended
	Dec. 31, 2019
Disclosure of Inventories [Abstract]
Inventories	9. Inventories December 31, 2 0 1 9 2 0 1 8 Finished goods $ 1,900,624 $ 1,961,627 Work in process 109,247 79,914 Billets 1,791,802 2,046,143 Raw materials and supplies 2,760,319 4,576,732 Materials, spare parts and rollers 1,146,705 1,154,586 Materials in transit 534,516 319,420 $ 8,243,213 $ 10,138,422 Non-current inventory: December 31, 2 0 1 9 2 0 1 8 Coke $ 747,300 $ 952,786 Spare parts 68,587 54,783 Rollers 144,486 140,009 Finished godos 353,095 353,095 1,313,468 1,500,673 Less, valuation allowance at the lower of cost or net realizable value. (353,095) (353,095) $ 960,373 $ 1,147,578 The Company has $ 747,300 and $ 952,786 of coke inventory on hand as of December 31, 2019 and 2018 respectively (See note 4-e), which the Company would use as an input to its blast furnace in the Lorain facility which is currently idled. Management of the Company continually evaluates both the idled facility and the coke inventory for impairment. Management periodically evaluates the potential degradation of the coke inventory and has determined that it continues to be suitable as a blast furnace input or, alternatively, for sale to other blast furnace facilities. As of May 2020, Management expects that there will be recovery in the industries in which the Company operates; this would result in the blast furnace being restarted in the future. However, the Company has recorded an impairment to the blast furnace resulting in a book value of zero. The Company has continued incurring certain costs to maintain the assets in Lorain, including the blast furnace and the coke; such costs are expensed as incurred. In order to restart the blast furnace the Company will incur certain expenses for the restoration of the equipment, and there is still uncertainty on the date on which the blast furnace will restart operation. The Company cannot offer any guarantee of the eventual restarting of the blast furnace or when conditions will become economically feasible to do so.

Property, plant and equipment

Property, plant and equipment	12 Months Ended
	Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [abstract]
Property, plant and equipment	10. Property, plant and equipment Cost of property, plant and equipment is as follows (in millions of Mexican pesos): Land Buildings Machinery and equipment Transportation equipment Furniture, mixtures and computer equipment Constructions and machinery in-progress Total Balance to January 1, 2018 1,094 4,776 24,805 158 129 3,434 34,396 Additions 137 90 1,305 1 11 1,370 2,914 Translation adjustments (14) (186) (543) (1) (4) (748) Balance as of December 31, 2018 1,217 $ 4,680 $ 25,567 $ 159 $ 139 $ 4,800 $ 36,562 Additions 89 591 532 2 4 53 1,271 Translation adjustments (15) (133) (563) 0 (2) (92) (805) Balance as of December 31, 2019 $ 1,291 $ 5,138 $ 25,536 $ 161 $ 141 $ 4,761 $ 37,028 Accumulated depreciation of property, plant and equipment is as follows (in millions of Mexican pesos): Buildings Machinery and equipment Transportation equipment Furniture, mixtures and computer equipment Total Balance to January 1, 2018 1,033 17,474 80 72 18,659 Depreciation expense 37 1,057 3 5 1,102 Translation effects (15) (151) (2) (2) (170) Balance as of December 31, 2018 1,055 $ 18,380 $ 81 $ 75 $ 19,591 Depreciation expense 30 1,063 4 2 1,099 Translation effects (3) (396) 0 0 (399) Balance as of December 31, 2019 $ 1,082 $ 19,047 $ 85 $ 77 $ 20,291 The depreciation expense for the years ended December 31, 2019, and 2018 amounted to $ 1,098,749 and $ 1,102,331, respectively. The net book value of property, plant and equipment is as follows (in millions of Mexican pesos): Net Book Value: Land Buildings Machinery and Equipment Transportation equipment Furniture, mixtures and computer equipment Constructions and machinery in-progress Total Balance as of December 31, 2017 $ 1,094 $ 3,743 $ 7,331 $ 78 $ 57 $ 3,434 $ 15,737 Balance as of December 31, 2018 $ 1,217 $ 3,625 $ 7,187 $ 78 $ 64 $ 4,800 $ 16,971 Balance as of December 31, 2019 $ 1,291 $ 4,056 $ 6,489 $ 76 $ 64 $ 4,761 $ 16,737 A facility of the Company located in Lorain, Ohio in the United States was idled in June of 2015 and management has no near-term plans to restart the facility. The expectation is that it will be restarted when market conditions improve substantially, particularly in the oil and gas drilling industry. The Company has property, machinery, and equipment with a net book value of approximately USD$ 41.5 and USD$ 32.7 million as of December 31, 2019 and 2018, pertaining to the Lorain, Ohio facility after recording an impairment charge when the facility was idled.

Intangible and other long-term

Intangible and other long-term assets	12 Months Ended
	Dec. 31, 2019
Disclosure of detailed information about intangible assets [abstract]
Intangible and other long-term assets	11. Intangible and other long-term assets The balances as of December 31, 2019 and 2018 are as follows: 2 0 1 9 Amortization period (years) Assets Original Value Accumulated amortization Net Republic trade mark $ 101,657 $ $ 101,657 * Kobe Tech contract 118,471 118,471 12 Customers list 62,056 47,379 14,678 20 Total from Republic (1) 282,184 165,849 116,335 Customers list 2,205,700 2,205,700 9 San 42 trademark (2) 329,600 329,600 * Goodwill (2) 1,814,160 1,814,160 * Total from Grupo San (3) 4,349,460 2,205,700 2,143,760 4,631,644 2,371,549 2,260,095 Other assets 75,022 75,022 $ 4,706,666 $ 2,371,549 $ 2,335,117 2 0 1 8 Amortization period (years) Assets Original Value Accumulated Amortization Net Republic trade mark $ 105,879 $ $ 105,879 * Kobe Tech contract 123,392 123,392 12 Customers list 64,634 43,359 21,275 20 Total from Republic (1) 293,905 166,751 127,154 Customers list 2,205,700 2,205,700 9 San 42 trademark (2) 329,600 329,600 * Goodwill (2) 1,814,160 1,814,160 * Total from Grupo San (3) 4,349,460 2,205,700 2,143,760 4,643,365 2,372,451 2,270,914 Other assets 29,138 29,138 $ 4,672,503 $ 2,372,451 $ 2,300,052 * Intangible assets with undefined useful life. (1) Intangible assets from the Republic acquisition. (2) The San 42 trademark and the goodwill are presented net of impairment losses recorded in 2009 for $16,000 and $2,352,000, respectively. (3) Intangible assets from the Grupo San acquisition. The amortization amounted of these assets recorded in net income of the years ended December 31, 2019, 2018 and 2017 amounted to $ 9,880, $ 10,087 and $ 125,384, respectively. The other assets are not subject to amortization and they are primarily comprised of guarantee deposits. The reconciliation between the opening and closing balances of each year is presented below: Assets Original Value Accumulated amortization Net Balance at January 1, 2018 $ 4,841,423 $ (2,369,875) $ 2,471,548 Additions 10,087 (10,087) Disposals (122,487) (122,487) Adjustment effect of the year (56,520) 7,511 (49,009) Balance as of December 31, 2018 $ 4,672,503 $ (2,372,451) $ 2,300,052 Additions 9,880 (9,880) Adjustment effect of the year 24,283 10,782 35.065 Balance as of December 31, 2019 $ 4,706,666 $ (2,371,549) $ 2,335,117

Short-term debt

Short-term debt	12 Months Ended
	Dec. 31, 2019
Disclosure of detailed information about borrowings [abstract]
Short-term debt	12. Short-term debt On October 22, 1997 and August 17, 1998, the Company offered the holders of medium-term notes of Simec then outstanding, to exchange their bonds at par for new subordinated bonds. The new notes bear semi-annual interest at an annual rate of 10.5% interest and principal repayments were semiannual from May 15, 2000 until November 15, 2007. At December 31, 2019 and 2018, the amount of such notes outstanding totaled USD$ 0.3 million, plus accrued interest. At December 31, 2019 and 2018, liabilities in pesos for the new notes outstanding amounted $ 5,700 and $ 5,936, respectively.

Accounts payable trade and othe

Accounts payable trade and other accrued liabilities	12 Months Ended
	Dec. 31, 2019
Trade and other payables [abstract]
Accounts payable trade and other accrued liabilities	13. Accounts payable trade and other accrued liabilities December 31, 2 0 1 9 2 0 1 8 Trade accounts payable $ 4,179,830 $ 4,390,413 Other accrued liabilities 1,547,214 2,057,557 $ 5,727,044 $ 6,447,970 The average credit period on purchases of certain goods or services is 30 to 60 days, from the date of the receipt of the good or service. The Company has financial risk management policies in place to ensure that all payables are paid within the pre-agreed credit terms.

Employee benefits

Employee benefits	12 Months Ended
	Dec. 31, 2019
Disclosure of defined benefit plans [abstract]
Employee benefits	14. Employee benefits Mexican entities a. Collective bargaining agreements – b. Seniority premium benefits – The most important actuarial hypothesis used for the purposes of the determination of the net cost of the period related to the retirement benefits plan were as follows: 2 0 1 9 2 0 1 8 2 0 1 7 Discount rate 7.7 9.5 7.5 Rate of salary increase 4.5 4.5 4.5 Components of net cost of benefits plan to employees are as follows: 2 0 1 9 2 0 1 8 2 0 1 7 Current service cost $ 2,179 $ 2,839 $ 5,697 Financial cost 4,242 4,025 6,637 Past service cost 1,947 1,481 (3,575) Anticipated reduction obligations 296 (327) (12,517) Actuarial losses (gains) recognized in the year 32,934 (17,928) (4,339) $ 41,598 $ (9,910) $ (8,097) The expense for the years 2019, 2018 and 2017 was recorded as follows: 2 0 1 9 2 0 1 8 2 0 1 7 Cost of sales $ 23,296 $ (5,550) $ (4,534) Administrative expenses 18,302 (4,360) (3,563) $ 41,598 $ (9,910) $ (8,097) The amounts included in the Consolidated Statements of Financial Position as of December 31, 2019 and 2018 are $ 123,368 and $ 81,770, respectively, corresponding to the present value of defined benefit obligations. Changes in the present value of the defined benefit obligation and the balance of the liability consist of the following: 2 0 1 9 2 0 1 8 Opening balance of the defined benefit obligation $ 81,770 $ 91,822 Current service cost 2,179 2,697 Past service cost 1,947 1,481 Financial cost 4,242 4,025 Actuarial losses (gains) 32,934 (17,928) Benefits paid 296 (327) Closing balance of the defined benefit obligation $ 123,368 $ 81,770 c. Severance benefits – d. Employee profit sharing (EPS) – e. Governmental defined contribution plan – Foreign entities (Republic) Republic is the only subsidiary of the Company which offers other benefits and pension plans to their employees. Such benefit plans to employees are described below: a. Collective Bargaining Agreements As of December 31, 2019, 79% and 81% as of December 31, 2018, of the Republic employees are covered by a collective bargaining agreement (labor agreement) with the United Steelworkers ("USW"). The agreement initially expired on August 15, 2016, was extended for three years through August 15, 2019, and further extended through August 15, 2022. The extended agreement renews all the provisions, understandings and agreements set forth in the January 1, 2012 Basic Labor Agreement. The base rates of pay determined under the extended agreement will remain unchanged from those ruling under the expired agreement as of August 16, 2016. The extended agreement provides that Company's quarterly contributions to fund the Republic Retirement VEBA Benefit Trust (the "Benefit Trust") be reduced from $2.6 million to $0.25 million beginning in August 15, 2016 through June 30, 2019. Effective July 1, 2019, the Company's contribution to the Benefit Trust changed to $4.00 per hour for each hour worked by USW represented employees. Effective August 16, 2019, the Company was no longer obligated to fund the Benefit Trust through the expiration of the extended agreement. b. Defined Contribution Plans Plan for employees- Participation in a multi-employer pension plan agreed under terms of a collective bargaining agreement differs from a traditional qualified single employer defined benefit pension plan. The SPT shares risks associated with the plan in the following respects: I. Contributions to the SPT by Republic may be used to provide benefits to employees of other participating employers; II. If a participating employer stops contributing to the SPT, the unfunded obligations of the plan may be borne by the remaining participating employers; and III. If chooses to stop participating in the SPT, may be obliged to pay an amount based on the underfunded status of the plan, referred to as a withdrawal liability. c. VEBA Benefit Trust The Company is required to make quarterly contributions to the defined contribution plan for post-retirement health benefits VEBA as determined by the terms of the USW collective bargaining agreement. The Benefit Trust is a health and welfare plan for USW retiree benefits, and is not a "qualified" plan under the regulations of the Employee Retirement Income Security Act of 1974. For the years ended December 31, 2019, 2018 and 2017, the Company recorded expenses of USD$ 1.1 million, USD$ 1.0 million and USD$ 1.0 million, respectively, related to this benefits plan. For the years ended December 31, 2019, 2018 and 2017, Republic recorded combined expenses of USD$ 3.6 million, USD$ 3.0 and USD$ 3.5 million, respectively, related to the funding obligations of the retirement healthcare and pension benefits. The cost contributions to these two funds have been reduced from USD $ 2.6 million to USD$ 0.25 million per quarter effective after the review of the collective agreement on August 16 2016. d. 401(k) Plans The Company has a 401(k) defined contribution retirement plan that covers almost all the salaried and nonunion hourly employees. This plan is designed to provide retirement benefits through Company contributions and voluntary deferrals of employees' compensation. The Company funds contributions to this plan each pay period, based on the participant's age and years of service as of January first of each year. The amount of the Company contribution is equal to the monthly base salary multiplied by the appropriate percentage based on age and years of service. The contribution becomes 100% vested upon completion of three years of vesting service. In addition, employees are permitted to make contributions to this 401(k)-retirement plan through payroll deferrals. In this case, the Company provides a 25.0% matching contribution for the first 5.0% of payroll that an employee elects to contribute. Employees are 100% vested in both their and Republic matching 401(k) contributions. For the years ended December 31, 2019, 2018 and 2017, the Company recorded expense of USD$ 1.1 million, USD$ 1.0 million and USD$ 0.8 million, respectively, related to this defined contribution retirement plan. Employees who are covered by the USW labor agreement are eligible to participate in the 401(k) defined contribution retirement plan through voluntary deferrals of employees' compensation. There are no Company contributions or employer matching contributions relating to these employees. e. Profit Sharing and Incentive Compensation Plans The labor agreement includes a profit sharing plan to which the Company is required to contribute The extended agreement modified the plan to the following quarterly pretax income, as defined in the labor agreement ("EBT"): 3% of EBT between $0 and $25 million per quarter; 4% of EBT between $25 and $75 million per quarter; and 5% of EBT over $75 million per quarter. For the year end December 2019, the company does not make outlays, because the current year thresholds had not been achieve, USD $ 1.0 million of expense was recorded for the year ended December 31, 2018, and 2017, because the current year thresholds had not been achieved. Republic has a profit-sharing plan for all salaried employees and nonunion workers. The profit-sharing plan was based on achieving certain profitability, inventory and shipments targets. In the year ended December 31, 2019, 2018 and 2017, the Company paid USD 0.0 million, USD $ 0.8 and USD $0.9 million respectively under this plan.

Income taxes

Income taxes	12 Months Ended
	Dec. 31, 2019
Major components of tax expense (income) [abstract]
Income taxes	15. Income taxes The Company is subject to Income Tax (ISR). The analysis of the income tax charged to the results of 2019, 2018 and 2017 is as follows: 2 0 1 9 2 0 1 8 2 0 1 7 Income tax of the year for Mexican companies $ 3,177,506 $ 67,745 $ 19 Income tax year for foreign companies 301,263 444,104 44,751 Deferred tax for Mexican companies 12,978 408,141 656,060 Deferred tax for foreign companies (215,473) (167,528) 421,979 $ 3,276,274 $ 752,462 $ 1,122,809 Income tax amount for year ended 2019 of Mexican companies includes Ps. $2,323.7 million corresponding to previous years taxes and expenses that were covered by various companies of the Group, these taxes were determined by the tax authorities corresponding to audits for fiscal years 2013 to 2017, which are indicated in note 23 (l); The companies that covered the taxes, signed compensation agreements with the tax authorities of Mexico, regarding the audits for fiscal years 2013 to 2017, in order to reach a fair agreement and thereby resolve the disputes that were in the courts with the tax authorities indicated in note 23 (l). Additionally, in 2020 it is also reasonably estimated to cover the amount of $554.4 million, also signing a compensation agreement between the companies and the tax authorities of Mexico. With the payment of the reasonable estimate to be covered in 2020, the disputes that were in the courts with the tax authorities indicated in note 23 (l) will be fully resolved. During 2019 and 2018, the income tax expense (benefit) attributable to income was different from the one that will result for applying 30% (tax rate in Mexico) before these provisions, as a result of the items shown below: 2 0 1 9 2 0 1 8 2 0 1 7 Expected benefit, expense $ 514,294 $ 1,308,828 $ 890,249 Increase (decrease) as a result of: Inflation effect, net (417,960) (114,419) (217,249) Impact of the nominal rate differences between the USA and Mexico (23,368) (35,914) (16,572) Benefit from utilization of tax loss carry-forward sand others (1) (987,135) (1,238,444) (115,068) Others, net (includes permanent items) 1,802,118 832,411 581,449 Income tax expense (2) $ 887,949 $ 752,462 $ 1,122,809 Effective tax rate 54.26% 17.92% 37.21% (1) This amount corresponds to the income tax benefit obtained by those companies that used tax loss carry-forwards in the years presented that were generated previously 2019, 2018 and 2017 , less the effect of tax losses incurred by some subsidiaries for which no deferred tax asset was recorded. (2) For the purpose of determining the effective tax rate, the payments corresponding to taxes from previous years and expenses that were paid by various group companies derived from repair agreements during the 2019 fiscal year were not considered within the income tax expense. The Company has tax losses in some Mexican subsidiaries which, according to the ISR law in Mexico, can be amortized to reduce taxable income generated over the following ten years. Tax losses can be updated following certain procedures established in the law. As of November 18, 2015, the Finance Ministry (SHCP) issued a decree in which a fiscal incentive is given to those who pay income tax (ISR) under terms of the Titles II or IV, Chapter II, Section I of the Law of ISR. Taxpayers who had business income of up to 100 million pesos, could write off up to 82% of 2016 and 85% for 2017 of investment in new fixed assets. This incentive that was used by Aceros Especiales Simec Tlaxcala, S.A. de C.V. and Fundiciones de Acero Estructural, S.A. de C.V. Likewise, on January 18, 2017, a decree was issued in which similar benefits were granted but only 69% authorized as an immediate deduction, which was used by the company Simec International, S.A. de C.V. As of December 31, 2019, Grupo Simec, S.A.B. de C.V. and certain of its Mexican subsidiaries have updated tax losses pending of amortize as follows: Origin Date Expiration Date Tax losses available 2011 2021 9,293,585 (1) 2012 2022 9 2013 2023 4,842 2014 2024 16,198 2015 2025 7,874 2016 2026 121,737 2017 2027 310,041 2018 2028 112,323 2019 2029 1,196,196 $ 11,062,805 (1) This amount includes $ 9,268,569 corresponding to a tax loss from the sale of shares which, according to the Income Tax Law, can only be applied against taxable profits on the sale of shares generated in the future. As of December 31, 2019, Republic had USD$ 249.7 million of tax losses pending of amortize for federal tax purposes, which expire between 2033 and 2038; USD$ 323.6 million of tax losses for state and local purposes that expire between 2020 and 2039 and approximately USD$ 5.5 million of tax losses at the subsidiary located in Canada, which expire between 2032 and 2039. As of December 31, 2019, and 2018, GV do Brasil Industria e Comercio of Aço LTDA, a subsidiary established in Brazil, had 210.345 million Brazilian Reals ($ 985 million of Mexican pesos) and 202.008 million Brazilian Reals ($ 1,025 million of Mexican pesos) respectively of tax losses pending of amortize for federal tax purposes, which do not have an expiration date. As of December 31, 2019, Companhia Siderúrgica do Espirito Santo S.A. Below is a summary of the effects of the main temporary differences comprising the deferred income tax liability included in the consolidated statements of financial position. December 31, 2 0 1 9 2 0 1 8 Deferred tax assets: Allowance for doubtful accounts $ (50,476) $ 1,045 Advances from customers 182,635 113,224 Deferred tax assets 132,159 114,269 Deferred tax liabilities: Property, plant and equipment 3,159,719 3,224,295 Intangible assets from Grupo San 318,768 310,025 Provisions 30,641 57,816 Prepaid expenses 33,137 29,879 Total deferred liabilities 3,542,265 3,622,015 Deferred tax liabilities, net $ 3,410,106 $ 3,507,746

Stockholders' equity

Stockholders' equity	12 Months Ended
	Dec. 31, 2019
Disclosure of classes of share capital [abstract]
Stockholders' equity	16. Stockholders’ equity a. Common stock as of December 31, 2019 and 2018, is as follows: Number of shares (in thousands) Amount Fixed capital 90,850 $ 441,786 Variable capital 406,859 1,978,444 497,709 2,420,230 Effect of restatement 412,038 Total 497,709 $ 2,832,268 Common stock consists of nominative shares, fully subscribed, without nominal value. Variable capital can be increased without limitation. All shares correspond to Series “B”. This series is divided in “Class I” with 90,850,050 shares that represent the fixed capital, and “Class II” with 406,859,164 shares of variable capital stock. b. Retained earnings include the statutory legal reserve. According to the Mexican General Corporate Law, at least 5% of net profit of the year must be transferred to the legal reserve until the reserve equals 20% of capital stock at par value (historical Mexican Pesos). The legal reserve may be capitalized but should not be distributed unless the entity is dissolved, and it must be replenished if it is reduced for any reason. As of December 31, 2019, and 2018, the legal reserve of the Company amounted to $ 484,046 (nominal pesos), representing 20% of nominal capital. c. In 2018, a reserve was approved for $ 3,000,000 for the repurchase and placement of own shares, with this increase the reserve amounted to $ 5,000,000 for purchase and re-purchase operations, in order to increase the liquidity of the shares of the Company and promote stability and continuity of their prices through the Mexican Stock Exchange. As of December 31 2019, and 2018, the Company held 33,729,926 and 31,066,207 shares in treasury, respectively, which amounted to $2,059,668 and $1,903,610, respectively. The resulting profit in 2019 for the purchase and sale of treasury shares amounted to $ 0 (loss of $ 4,239 in 2018). d. A reconciliation of the number of shares outstanding shows below: Thousands of shares 2 0 1 9 2 0 1 8 Shares outstanding at beginning of year 466,643 494,047 Repurchase of capital shares, net (2,664) (27,044) Shares outstanding at year end 463,979 466,643

Non-controlling interest

Non-controlling interest	12 Months Ended
	Dec. 31, 2019
Disclosure of Non-controlling interest [Abstract]
Non-controlling interest	17. Non-controlling interest As mentioned in Note 4, Grupo Simec, S.A.B. de C.V. does not own 100% of the capital stock of all of its subsidiaries. The non-controlling interest represents the equity in subsidiaries owned by minority shareholders, and is presented in the consolidated statements of financial position after the controlling interest. The consolidated statements of comprehensive income (loss) also show total net profit or loss for the year as well as for the net comprehensive income or loss for the year. Controlling and non-controlling interest portions are presented after the consolidated comprehensive earning of the year. The table below shows the changes for the years ended December 31, 2019 and 2018: 2 0 1 9 2 0 1 8 Balance at beginning of year $ (323,369) $ (108,572) Share of profits and losses for the year (333,109) (206,417) Share of translation effects of foreign subsidiaries (116,648) (8,380) Balance at the end of the year $ (773,126) $ (323,369)

Transactions and balances with

Transactions and balances with related parties	12 Months Ended
	Dec. 31, 2019
Disclosure of transactions between related parties [abstract]
Transactions and balances with related parties	18. Transactions and balances with related parties a. Transactions with related parties, carried out in the ordinary course of business, were as follows: 2 0 1 9 2 0 1 8 2 0 1 7 Holding company Interest expense $ $ 7,346 $ 5,325 Interest income 265,200 210,514 198,054 Management staff Administrative services expenditures 23,548 23,494 25,603 Other related parties Sales 249,560 20,375 3,632 Purchases 438,052 372,759 51,760 Direct short-term benefits (*) 106,631 90,600 82,447 (*) Correspond to the salaries, allowances and bonuses paid to the executives of Simec. b. Balances receivable from and payable to related parties are as follows: December 31, 2 0 1 9 2 0 1 8 Short term Accounts receivable: Compañía Laminadora Vista Hermosa, S.A. de C.V. $ $ 360 Operadora Construalco, S.A. de C.V. 717 548 Operadora Industrial de Herramientas, S.A. de C.V. 38 912 Perfiles Comerciales Sigosa, S.A. de C.V. 2,250 1,597 Joist del Golfo, S.A. de C.V. 5,105 6,516 Others 5,815 5,798 $ 13,925 $ 15,731 These balances correspond to accounts receivable for services and / or sales of specific finished products for their activity. December 31, 2 0 1 9 2 0 1 8 Loans to related parties: Compañia Laminadora Vista Hermosa, S.A. de C.V. $ $ 183,171 Operadora Compañia Mexicana de Tubos, S.A. de C.V. 38,232 Compañia Manufacturera de Tubos, S.A. de C.V. 44,472 $ $ 265,875 Total short term $ 13,925 $ 281,606 Loans granted to related parties In 2018 loans were granted to Compañia Laminadora Vista Hermosa, S.A. de C.V. for USD 9,272,000 (as of December 31, 2018 this amounts, when translated to pesos, to $ 182,256 plus interest of $ 915 for a balance of $ 183,171), to Operadora Compañía Mexicana de Tubos, S.A. de C.V. for USD 1,900,000 (as of December 31, 2018 this amounts, when translated to pesos, to $ 37,347 plus interest of $ 885 for a balance of $ 38,232) and to Compañía Manufacturera de Tubos, S.A. de C.V. for USD 2,209,600 (as of December 31, 2018 this amounts, when translated to pesos, to $ 43,433 plus interest of $ 1,039, for a balance of $ 44,472). The agreed interest rate for these loans is the equivalent of the LIBOR rate plus 1 percentage point, which will be payable upon settlement of these loans. These loans and interest were paid off in the month of May 2019, according to agreements between the parties. December 31, December 31, 2 0 1 9 2 0 1 8 Long term Accounts receivable: Industrias CH, S.A.B. de C.V. $ 648,281 $ 648,281 $ 648,281 $ 648,281 Loans to related parties: Industrias CH, S.A.B de C.V. $ 780,989 $ 730,278 Perfiles Comerciales Sigosa, S.A. de C.V. 142,268 579,047 Proyectos Comerciales el Ninzi, S.A. de C.V. 376,790 $ 923,257 $ 1,686,115 Total, long term $ 1,571,538 $ 2,334,396 The account receivable with Industrias CH, S.A.B. de C.V. corresponds mainly to ISR balances to be recovered, due to the fact that some companies consolidated ISR for tax purposes until 2013 with this company. At December 31, 2019, loans denominated in both USD and pesos, were outstanding from Industrias CH, S.A.B. de C.V. The USD loan was for USD 25,400,000 when translated to pesos, to $479,368 plus interest of $61,978, plus VAT of $9,273 for a balance of $550,619 (as of December 31, 2018 this amounts, when translated to pesos, to $499,278 plus interest of $19,653, for a balance of $518,931); the agreed interest rate 2019 for this loan is the equivalent of the Interbank interest rate plus 1 percentage point. The loan in pesos for $186,752 plus interest of $37,602 plus the IVA of $6,016 for a balance of $230,370 (as of December 31, 2018 this amount, when to $186,752 plus interest of $21,881, plus VAT of $2,714 for a balance of $211,347). These granted loans in USD and pesos including interest amount to $780,989 as of December 31, 2019. (2018 730,278) At December 31, 2018, there was a loan receivable from Perfiles Comerciales Sigosa, S.A. de C.V., including interests of $ 579,047, during 2019 payments of $ 428,367 were received, resulting in a balance pending collection of $ 142,268, as of December 31, 2019. In 2018, we had loans and collection interests with Proyectos Comerciales el Ninzi, S.A. de C.V., which were liquidated in 2019. December 31, 2 0 1 9 2 0 1 8 Accounts payable: Aceros y Laminados Sigosa, S.A. de C.V. $ 1,853 $ 1,854 Industrias CH, S.A.B. de C.V. 208,223 205,879 Perfiles Comeciales Sigosa, S.A. de C.V. 3,632 Holding Protel, S.A. de C.V. 251 Compañia Laminadora Vista Hermosa, S.A. de C.V. 1,904 Operadora Perfiles Sigosa, S.A. de C.V. 5,850 112,587 Operadora Pytsa Industrial, S.A. de C.V. 8,233 5,185 Tuberias Procarsa, S.A. de C.V. 1,942 Compañia Manufacturera de Tubos, S.A. de C.V. 9,631 6,220 Others 1,949 924 $ 241,526 $ 334,591 The other accounts payable correspond to services and / or purchases of finished products according to their activity.

Cost of sales and expenses by t

Cost of sales and expenses by their nature	12 Months Ended
	Dec. 31, 2019
Expenses by nature [abstract]
Cost of sales and expenses by their nature	19. Cost of sales and expenses by their nature At the years ended at December 31, 2019, 2018 and 2017, the cost of sales and administration expenses consist of the following: 2 0 1 9 2 0 1 8 2 0 1 7 Raw materials and consumables $ 16,411,788 $ 15,565,242 $ 11,268,400 Electrical energy 3,303,640 2,536,387 2,123,658 Ferroalloys 2,137,671 1,973,586 1,734,914 Refractories 707,214 613,563 492,781 Oxygen 276,648 279,272 213,838 Electrodes 1,293,096 1,463,091 419,741 Gas and fuels 962,001 766,163 612,605 Labor 2,042,433 3,181,556 2,699,414 Operation materials 919,893 954,415 1,000,752 Depreciation and amortization 1,108,629 1,112,418 1,465,759 Maintenance 2,221,595 2,243,255 2,586,507 Other expenses 319,958 954,379 615,100 $ 31,704,566 $ 31,643,327 $ 25,233,469 2 0 1 9 2 0 1 8 2 0 1 7 Cost of sales $ 30,067,141 $ 30,563,315 $ 23,994,526 Administrative expenses 1,637,425 1,080,012 1,238,943 $ 31,704,566 $ 31,643,327 $ 25,233,469

Other (income) expenses, net

Other (income) expenses, net	12 Months Ended
	Dec. 31, 2019
Analysis of income and expense [abstract]
Other (income) expenses, net	20. Other (income) expenses, net The components of other income (expenses) net, in the years ended December 31, 2019, 2018 and 2017, are the following: 2 0 1 9 2 0 1 8 2 0 1 7 Cancellation of balances $ 87,241 $ 786 $ 2,615 Land treatments in Pacific Steel, Inc. 3,362 8,922 7,674 Attorney’s fees 54,520 0 0 Bad debt estimate 5,320 0 0 Other expenses 150,443 9,708 10,289 Sale of scrap (3,182) (9,865) (10,434) Recovery of loss (6,397) (6,405) Update of balances in favor in taxes (2,699) (519) Other income (4,282) (5,791) (6,270) Other income (13,861) (24,760) (18,772) Other (income) and other expenses, net $ 136,582 $ (15,052) $ (6,934)

Financial Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2019
Disclosure of detailed information about financial instruments [abstract]
Financial Instruments	21. Financial instruments a. Capital risk management – b. Market risk – c. Foreign exchange risk management – December 31, 2 0 1 9 2 0 1 8 Short – term assets $ 11,176,625 $ 11,649,108 Short – term liabilities 4,843,976 5,567,083 Net monetary asset position in foreign currency $ 6,332,649 $ 6,082,025 Equivalent in U.S. Dollars (thousands) USD$ 335,545 USD$ 309,414 d. Credit risk management – Trade receivables consist of a large number of customers dedicated to construction and automotive industries, distributed in different geographic areas. Ongoing credit evaluation is performed on the financial condition of accounts receivable. The Company does not have significant credit risk exposure with any single counterparty or any group of counterparties having similar characteristics. The Company defines that the counterparties that have similar characteristics are considered related parties. Concentration of credit risk to any other counterparty did not exceed 5% of gross monetary assets at any time during the year. The credit risk on liquid funds and derivative financial instruments is limited because the counterparties are banks with high credit-ratings assigned by international credit-rating agencies. e. Liquidity risk and risk tables (In thousands of US dollars) December 31, 2 0 1 9 2 0 1 8 Bank loans credit lines: Drawn balances $ 350,000 $ 350,000 Undrawn balances 116,596 128,681 Available line balance $ 233,404 $ 221,319

Financial information by segmen

Financial information by segments	12 Months Ended
	Dec. 31, 2019
Disclosure of operating segments [abstract]
Financial information by segments	22. Financial information by segments The Company analyses its information by region, due to the operational structure and the organization of its business. Information used for making decisions is based on such regions. The Company’s sales are made mainly in Mexico and the United States of America. The Mexican segment includes the plants in Mexicali, Guadalajara, Tlaxcala and San Luis Potosi. The USA segment includes the six Republic plants five of which are located in the United States (Ohio, Indiana and New York) and one in Canada (Ontario). The plant in Canada represents approximately 0% and 3% of the segment’s total sales in 2019 and 2018, respectively, of all the sales of the segment. The segments are engaged in the manufacturing and sale of long steel products intended mainly for the building and automotive industries. Year ended December 31, 2019 Mexico USA Brazil Eliminations between segments Total Net sales $ 18,530,672 $ 7,120,360 $ 8,520,169 $ $ 34,171,201 Cost of sales 14,934,575 7,752,776 7,379,790 30,067,141 Gross profit (loss) 3,596,097 (632,416 ) 1,140,379 4,104,060 Administrative expenses 848,495 267,756 521,174 1,637,425 Other income (expenses), net 175,412 (71,324 ) 32,494 136,582 Interest income 145,729 266 0 145,995 Interest expense 3,438 (84,621) (110,919) 137,053 (55,049) Exchange rate gain (loss), net 628,044 (2,745) 177,314 (18,030) 784,583 Income (loss) before income taxes 2,093,313 (910,458) 298,478 155,083 1,636,416 Income taxes 3,505,015 (236,598) 7,857 3,276,274 Net income (loss) for the year $ (1,411,702) $ (673,860) $ 290,621 $ 155,083 $ (1,639,858) Depreciation and amortization $ 577,048 $ 260,760 $ 270,821 $ 1,108,629 Total assets 34,761,662 8,419,771 6,002,701 $ (3,343,456) 45,840,678 Total liabilities 9,079,632 4,219,817 3,274,908 (3,343,456) 13,230,901 Acquisitions of property, plant and equipment 785,818 278,467 207,135 1,271,420 Year ended December 31, 2018 Mexico USA Brazil Eliminations between segments Total Net sales $ 20,507,794 $ 9,246,444 $ 5,924,015 $ $ 35,678,253 Cost of sales 15,715,761 9,294,352 5,553,202 30,563,315 Gross profit (loss) 4,792,033 (47,908) 370,813 5,114,938 Administrative expenses 592,218 267,905 219,889 1,080,012 Other income (expenses), net 11,367 3,685 15,052 Interest income 307,279 5,542 312,821 Interest expense 52,226 (99,985) (103,141) 134,389 (16,511) Exchange rate gain (loss), net 445,289 7,522 (602,747) 3,040 (146,896) Income (loss) before income taxes 5,015,976 (399,049) (554,964) 137,429 4,199,392 Income taxes 905,482 7,145 (160,165) 752,462 Net income (loss) for the year $ 4,110,494 $ (406,194) $ (394,799) $ 137,429 $ 3,446,930 Depreciation and amortization $ 587,407 $ 268,635 $ 256,376 $ 1,112,418 Total assets 40,617,874 10,181,967 6,733,362 $ (8,679,380) 48,853,823 Total liabilities 8,458,465 10,815,692 2,750,043 (8,679,380) 13,344,820 Acquisitions of property, plant and equipment 1,552,587 433,154 8,724 1,994,465 Year ended December 31, 2017 Mexico USA Brazil Eliminations between segments Total Net sales $ 17,125,369 $ 8,370,999 $ 3,204,082 $ $ 28,700,450 Cost of sales 13,340,648 7,814,180 2,839,698 23,994,526 Gross profit (loss) 3,784,721 556,819 364,384 4,705,924 Administrative expenses (753,676) (257,001) (228,266) (1,238,943) Other income (expenses), net (98,915) 105,849 6,934 Interest income 252,074 217 252,291 Interest expense (7,459) (50,962) (65,186) $ 69,203 (54,404) Exchange rate gain (loss), net (1,291,909) (26,256) 1,861 661,942 (654,362) Income (loss) before income taxes 1,884,836 328,666 72,793 731,145 3,017,440 Income taxes 786,902 322,444 13,463 1,122,809 Net income (loss) for the year $ 1,097,934 $ 6,222 $ 59,330 $ 731,145 $ 1,894,631 Other information: Depreciation and amortization $ 677,665 $ 538,699 $ 249,395 $ 1,465,759 Total assets 32,878,144 10,548,895 5,356,860 $ (2,807,367) 45,976,532 Total liabilities 1,134,438 10,760,999 2,570,925 (2,807,367) 11,658,995 Acquisitions of property, plant and equipment 2,394,541 622,785 22,175 3,039,501 Information on products: Year ended December 31, 2 0 1 9 2 0 1 8 2 0 1 7 Light structural $ 1,396,632 $ 1,654,720 $ 1,557,567 Structural 3,304,178 2,441,079 2,232,979 Bars 2,220,264 1,575,291 1,065,731 Rebar 12,370,490 12,363,530 8,931,862 Flat rebar 1,833,576 2,271,347 1,552,578 Hot rolled bars 8,226,613 9,549,286 8,594,130 Cold drawn bars 3,102,544 3,779,385 3,370,150 Others 1,716,904 2,043,615 1,395,453 $ 34,171,201 $ 35,678,253 $ 28,700,450 Information about geographical areas: Year ended December 31, 2 0 1 9 2 0 1 8 2 0 1 7 Mexico $ 17,873,633 $ 20,421,529 $ 16,712,874 USA 7,544,078 8,975,585 8,333,259 Brazil 8,500,592 5,932,297 3,214,117 Canada 175,686 267,606 370,803 Latin America 60,672 60,578 30,173 Other (Europe and Asia) 16,540 20,658 39,224 $ 34,171,201 $ 35,678,253 $ 28,700,450

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2019
Disclosure of Contingencies [Abstract]
Contingencies	23. Contingencies As of December 31, 2019, the Company has the following contingencies: a. Pacific Steel, Inc. (PS), a subsidiary located in National City in San Diego County, California, United States of America, for which the main activity is the purchase and sale of scrap, has the following environmental contingencies: California Department of Toxic Substances Control On September 2002, the Department of Toxic Substances Control (DTSC) inspected PS facilities based on an alleged complaint from neighbors due to PS’s excavating to recover scrap metal on its property and on a neighboring property, which PS rents from a third party (BNSF Railway). In this same month, DTSC issued an enforcement order of imminent and substantial endangerment determination, which alleges that certain soil piles, soil management and metal recovery operations may cause an imminent and substantial danger to human health and the environment; consequently, DTSC sanctioned PS for violating Hazardous Waste Control Laws in the State of California and imposed the obligation to remedy the site. On July 26, 2004, in an effort to continue with this order, DTSC filed against PS a Complaint for Civil Penalties and Injunctive Relief in San Diego Superior Court. On July 26, 2004, the court issued a judgment, whereby PS was obligated to pay USD$ 0.2 million, which has been paid. On June 6, 2010, the DTSC and the San Diego Department of Environmental Health (DEH) inspected the facilities of PS, in response to a general complaint. On August 10, 2010 DTSC and DEH conducted a second inspection and found seven infractions. The DEH is satisfied with the compliance of PS on those issues; however, on October 19, 2010 the technical division of the DTSC recommended to the legal division of DTSC that it impose significant penalties. The land remediation was suspended at the beginning of 2011 due to the inefficiency of the process, which was verified by several studies. As an alternative, once the necessary permits were obtained from the authorities in Mexico, the Mexicali plant began the process of importing non-RCRA soil for final disposal in a secure landfill based in Nuevo Leon State. This landfill is deposited after the separation of the metal content, which is used as raw material in the smelting process. PS has completed the shipment of non-RCRA soil for final disposal in Nuevo Leon State. The disposition of a stack estimated at 8,000 tons of material classified RCRA (hazardous for Federal purposes) was also considered for shipment to Mexico. The process began in early 2013, but the response from the authorities was slow. Therefore, on April 9, 2015, a letter from the California Attorney General Department of Justice (Attorney General) was received where PS is required to, in the absence of obtaining permission from the Mexican authorities; present a program for transport the pile of contaminated soil classified as RCRA to an authorized confinement in the United States at the latest on April 22, 2015. This letter warned that PS must ship the RCRA soil no later than July 9, 2015, or risk DTSC proceeding with a civil lawsuit seeking the maximum amount of fines established by law and corresponding legal redress. On April 21, 2015, PS sent a letter to the Attorney General explaining that the authorities in Mexico had not denied permission to the Company but had simply requested that it present its application in a different format, which had already been presented and reviewed by the authority on April 17, 2015. On July 23, 2015, the Attorney General denied the extension requested by PS and demanded the immediate shipments of the RCRA stack to an authorized landfill. PS began transporting RCRA soil on July, 29, 2015, and completed removal of the RCRA stack by September 12, 2015 with a total of 3,000 metric tons. On January 5, 2016, the Attorney General and PS stipulated to filing a "final judgment and order on consent" or Consent Judgment in San Diego Superior Court. The parties negotiated the Consent Judgment, which includes the following terms: - PS to pay USD$ 0.138 million as a civil penalty for alleged violations of the 2004 Corrective Action Consent Agreement. PS has made all of the required payments to DTSC as of December 31, 2017. - Remove the RCRA soil pile and send it to an approved landfill. The Judgment indicates that the Company complied with this commitment by October 2, 2015. - After removing the RCRA soil pile, the Company must take samples of the soil in the area where the RCRA soil pile was located. Samples were taken and the results indicated that the soil had pollution levels that exceed the limits set by the State. On April 7, 2016, the Attorney General and DTSC demanded that the Company remove soil 10 feet across and 2 feet deep on the perimeter of the area where the RCRA soil pile was located and dispose of it in an approved confinement. Instead, PS convinced DTSC to enter into a Tolling Agreement on August 10, 2016, which tolls for two years (until August 10, 2018) the statute of limitations for DTSC to challenge PS’s compliance with the Consent Judgment. This Tolling Agreement was extended on August 10, 2018, for an additional two-year period. This Tolling Agreement remains in force as of December 31, 2018, and will end as of August 10, 2020. - The Company shall continue to meet the conditions of the final judgment, the corrective measures, and all tasks arising from this, which were entered in the same court in 2004. PS is working to develop a “corrective measures study” (CMS) that is intended to develop a plan for determining what remedy will be implemented at the site. As of December 31, 2019, it is unclear what will be the appropriate remedy to implement at the PS site, when the CMS will be completed, how long remediation will take, and how much it will cost. On May 29, 2019, the company presents, a proposal to the DTSC, to carry out a work plan in March 2020, the DTSC has agreed tentatively, with that proposal or work plan b. As with most steel producers in United States of America, Republic could incur significant costs related to environmental issues in the future, including those arising from environmental compliance activities and remediation stemming from historical waste management practices at the Republic’s facilities. The reserve created to cover probable environmental liabilities of USD$ 2.6 million and USD$ 2.6 million were recorded as of December 31, 2019 and 2018, respectively. The reserve includes incremental direct costs of remediation efforts and post-remediation monitoring costs that are expected to be paid after corrective actions are complete. As of December 31, 2019, the current and non-current portions of the reserve amounted to USD$ 1.0 million and USD$ 1.6 million, (USD$ 1.0 million and USD$ 1.6 million in 2018), respectively, are included in accounts payable and accumulated liabilities in the short and long term, respectively, in the Consolidated Statements of Financial Position. c. The Company is not aware of any material environmental remediation liabilities or contingent liabilities relating to environmental matters with respect to facilities, for which the establishment of an additional reserve would be necessary at this time. In the event that, in the future, the Company incurs in any such additional expenses, these costs will most likely be incurred over a number of years. However, future regulatory action regarding historical waste management practice in the facilities of Republic PS and future changes in applicable laws and regulations may require the Company to incur significant costs that may have a material adverse effect on the future financial performance of the Company. d. The Company is involved in a series of lawsuits and legal claims that have arisen during the normal course of its operations. The Company and its legal advisors do not expect the outcome of these matters to have any significant adverse effect on the Company's financial position and results of operations, therefore it has not been recognized any liabilities for such lawsuits and claims. e. Mexican tax authorities have the right to review, at least the previous five years and could determine differences in taxes payable, plus any corresponding adjustments, surcharges and fines. f. Tax authorities in United States of America have the right to review, at least the previous three years and could determine differences in taxes payable, plus its corresponding adjustments, surcharges and fines. g. Canadian tax authorities have the right to review, at least the previous four years and could determine differences in taxes payable, plus its corresponding adjustments, surcharges and fines. h. Brazilian tax authorities have the right to review, at least the previous five years and could determine differences in taxes payable, plus its corresponding adjustments, surcharges and fines. i. On January 19, 2017, the Company was notified with the excerpt issued by the General Direction of Crimes and Sanctions of the National Banking and Exchange Commission (CNBV), for the probable realization, in the re-purchase of own stock operations, of several behaviors that, under the judgment of the CNBV, could be different to the ones established in the “Ley del Mercado de Valores (LMV)”. On February 9, 2017 Grupo Simec filed the statement of manifestations to the administrative sanction procedure. The resolution was favorable for the company, issued on May 15, 2018. j. On September 5, 2017, Grupo Simec and GV do Brasil were notified of the arbitration procedure filed by SMS Concast at the International Court of Arbitration (ICC), which demands the payment of USD $ 1.4 million plus expenses, for additional costs incurred in the construction and assembly of the steelmaking area of the Brazilian plant. On November 6, 2017, the companies of the Group replied to the demand and filed a counterclaim against SMS Concast for the amount of USD $ 5 million, which GV do Brasil utilized on the equipment to work properly. On February 26, 2020 the arbitrators sentenced our companies to individual and joint payments of various amounts and in different currencies. We are currently requesting SMS Concast to supply us with the missing secondlevel equipment. k. In February 2017, the Securities and Exchange Commission ("SEC") notified the Company of the opening of an investigation to determine if the Company's management committed infractions of US federal securities laws related to the failure to maintain internal control over financial reporting. This investigation is derived, in part, from the failures in these systems which were reported in the 20-F (Annual Report) for the fiscal year 2015. On February 21, 2016, the Company began implementing the corrective measures recommended by a specialist firm in order to better comply with the COSO framework. On January 29, 2019, the Company reached a settlement with the SEC. Under the terms of the settlement, the Company paid a civil penalty of USD $200,000 and retained an independent consultant to ensure remediation of material weaknesses and the implementation and maintenance of internal controls over financial reporting. l. During the year 2018 Grupo Simec and some of its subsidiaries have been audited by the tax authorities of Mexico with respect to fiscal years from 2013 to 2017. The tax which the authority pretends to impose are non-existent taxes, which we have been litigating through various means including “amparo”, lawsuits, resources of revocation in some cases and nullity lawsuit in others. As of December 31, 2018, the payment has not been enforceable in any of the disputed matters. The amount of tax credits being appealed in court ascends to Ps. $ 5,880 million. During the 2019 financial year, some of the Simec Group subsidiaries that have oversight acts affected tax payments and expenses through Remedial Agreements signed between the companies and the Tax Administration Service (SAT) during the aforementioned year for an amount of PS. $ 2,323.7 million.

Commitments

Commitments	12 Months Ended
	Dec. 31, 2019
Disclosure of commitments [Abstract]
Commitments	Commitments a. On May 1, 2018, the Company signed a contract with ArcelorMittal S.A. in Brazil, for the acquisition of Cariacica and Itauna steels for rent, producing plants and wire drawing equipment for the production of wires and derivatives. The Cariacica unit has the capacity to produce 600 thousand metric tons of liquid steel per year and 450 thousand metric tons of rolled steel products. This plant has more than 500 employees and can produce rod and light structural profiles. The factory is located in the city of Cariacica, next to the city of Victoria, in the state of Espírito Santo on a land of more than 1,200,000 square meters. The Itauna unit has an installed capacity to produce 120,000 metric tons per year of steel laminate products and can manufacture light structural profiles and rods. The plant is located in the city of Itauna in the state of Minas Gerais, less than 100 kilometers away from Belo Horizonte and has 94 employees. The factory is leased under a contract expiring in August 2020. b. Republic leases certain equipment, office space and computer equipment under non-cancelable operating leases. The leases expire at various dates through 2020. During the years ended December 31, 2019, 2018 and 2017, rental expenses relating to operating leases amounted to USD$ 0.1 million, USD$ 0.7 million, and USD$ 0.5 million, respectively. Currently there are no additional obligations post-2020. c. In January 2013, the Company entered into an agreement with EnerNOC which enables Republic to receive payments for reducing the electricity consumption during a dispatch declared by PJM Interconnection as an emergency. The agreement is for 5 years, effective January 31, 2013 and expires on May 31, 2018. During the years ended December 31, 2019, 2018 and 2017, the Company recognized income from this agreement of USD$ 1.8 million, USD$ 2.8 million and USD$ 1.0 million, respectively. Unlike the previous contract the payments are earned by event and how they accrue. d. In connection with a sale and use tax audit by the Ohio Department of Taxes covering the period from January 1, 2009 to December 31, 2012, an assessment of $ 2,452,028 (including interests of $ 394,138) against the Company was issued, on December 9, 2016. The Company does not agree with the evaluation in its entirety and has filed a Reevaluation Petition on January 30, 2017 appealing the assessment to the Ohio Board of Tax Appeals. As of May 27, 2020, no resolution has been obtained on this appeal. Due to the nature of this matter and the uncertainty of the resolution on the appeal that is in the early stages, the Company has not recorded an expense in the fiscal year 2019 or 2018 that recognizes the evaluation or any estimated amount of liquidation. e. In January 2018, the Company entered into a contract with the supplier ECOM, LTDA. for an amount of USD $ 6.3 million for the purchase of energy of 10,000 MWH per month, for its subsidiary GV do Brasil Industria y Comercio de Aço LTDA, starting the supply in 2019. All payments with monthly maturity 6 days after of the month end closing. The contract ends in February 2020. f. February 22, 2018, the contract was signed with Primental Technologies of Italy, United States of America and Mexico, for the construction of the Lamination train and the supply of a new reheating furnace for the Mexicali plant, thereby increasing capacity manufacturing for the manufacture of finished product from 17,500 to 22,500 tons per month. A 20% advance payment of USD $ 1.67 million has already been paid, the amount exercised at the end of 2019 USD $ 11.9 and the process of placement of letters of credit continues. The project execution period is 16 months and a budget of $ 23.2 million is estimated. g. In order to maintain and increase the continuity and quality of the electricity supply in all the Group's plants, the scheme change from Basic Supply (SSB) to the Qualified Supply Service (SSC), with the provision of acquiring energy in the wholesale electricity market. With the implementation of this project, which only requires the modernization of the set of equipment that records the consumption measurements of the electrical substations of each plant, it seeks to achieve a more efficient, safe, clean and transparent electrical service and more competitive prices than those current. The estimated cost of this project is USD $ 1 million 850 thousand dollars and is expected to culminate in the month of November 2020. h. In execution of the program to remedy the breach of the requirement to keep placed between the investing public of at least 12% of the shares representing the Capital Stock of our issuer, presented to the Market Surveillance Directorate of the Bolsa Mexicana de Valores, S.A. de C.V., On August 27, 2019, are already in the process of being sufficient shares placed on the markets to exceed that minimum percentage of shareholding.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2019
Disclosure of non-adjusting events after reporting period [abstract]
Subsequent Events	25. Subsequent events Our company actively conducts ongoing reviews of our commercial practices in Mexico and other countries to avoid, as much as possible, the imposition of tariff rates on our products. On January 16, 2020, a preliminary tariff of 6.75% was imposed on our corrugated rod exports to the United States of America. We have contested these tariffs and anticipate that they will be decreased, given the almost unobserved result of the physical review carried out by the Department of Trade of that country in the plants of San Luis Potosí in February 2020. Dividends were paid on March 10, 2020. These dividends was approved at the Ordinary General Shareholders' Meeting held on February 10, 2020. The total amount paid was $ 1,990 million pesos. For purposes of Income Tax based on fraction XXX of article NINE of the transitional provisions of the Income Tax Law, the withholding referred to in the second paragraph of article 140, and sections I and IV of the Article 164 of the same Law, since the dividends decreed will be paid out of the Net Fiscal Profit account of the profits generated until December 31, 2013, which the company independently carries in other Net Fiscal Profit accounts to since January 1, 2014, under the terms of article 77 of the Income Tax Law. Risks Related to Global Economic The outbreak of COVID-19 and disruptions in the steel industry have had, and are expected to continue to have, an adverse effect on our results of operations, financial condition and cash flows. The global pandemic resulting from the spread of COVID-19 has had a significant effect on economies, businesses and individuals around the world. Efforts by governments around the world, including in the U.S., Mexico, and Brasil, to contain COVID-19 have involved, among other things, border closings and other significant travel restrictions; mandatory stay-at-home and work-from-home orders; mandatory business closures; public gathering limitations; and prolonged quarantines. These efforts and other governmental, business and individual responses to the COVID-19 pandemic have led to significant disruptions to commerce, supply chains, credit losses, lower consumer demand for goods and services and general uncertainty regarding the near-term and long-term effects of COVID-19 on the domestic and international economy and on public health. Global steel production has been and will continue to be affected by volatility in the market due to the COVID-19 pandemic. We expect steel consumption in the automotive and construction industries to be lower due to delays and reduced demand for steel products in North America and globally. These developments and other consequences of the COVID-19 outbreak have and could continue to materially adversely affect our results of operations, financial condition and cash flows. On March 31, 2020, the Mexican Ministry of Health published an Administrative Ruling setting out certain “Essential Activities” that may continue to operate during the national state of sanitary emergency. In accordance with the Administrative Ruling and the Ministry of Health’s Technical Guidelines issued on April 6, 2020, we have determined that our business qualifies within the defined “Essential Activity” list. Similarly, the U.S. Department of Homeland Security guidance has identified our business as a critical infrastructure industry, essential to the economic prosperity, security and continuity of the United States. However, although we continue to operate, we have experienced, and are likely to continue to experience, significant reductions in demand and supply chain disruption. For example, the automotive industry, which is one of our significant end markets, has been experiencing a significant amount of disruption at a time of declining demand, resulting in a decline in profitability. We also may experience disruptions to our operations resulting from changes in government policy or guidance; quarantines of employees, customers and suppliers in areas affected by the COVID-19 outbreak; and closures of businesses or manufacturing facilities that are critical to our business or our supply chain. The COVID-19 pandemic could also adversely affect our liquidity and ability to raise additional capital. Uncertainty regarding the duration of the COVID-19 pandemic and disruptions to the steel industry may, for example, adversely affect our ability to raise additional capital, or require additional capital, or require additional reductions in capital expenditures that are otherwise needed, to support working capital or continuation of our growth strategy. Additionally, government stimulus programs may not be available to us, our customers or our suppliers, or may prove to be ineffective. If we are unable to access additional capital at the levels we require, or the cost of credit is greater than expected, it could materially adversely affect our operating results. COVID-19 could negatively affect our internal controls over financial reporting as a portion of our workforce is required to work from home and therefore new processes, procedures, and controls could be required to respond to changes in our business environment. We may be susceptible to increased litigation related to, among other things, the financial effects of the COVID-19 pandemic on our business, our ability to meet contractual obligations due to the COVID-19 pandemic, employment practices or policies adopted during the health crisis, or litigation related to individuals contracting COVID-19 as result of alleged exposure on Company premises. In addition, the COVID-19 outbreak has significantly increased economic and demand uncertainty. The current outbreak and continued spread of COVID-19 could cause a global recession, which would have a further material adverse effect on our results of operations, financial condition and cash flows. The full extent to which the COVID-19 outbreak will affect our operations, and the steel industry generally, remains highly uncertain and will ultimately depend on future developments which cannot be predicted at this time, including, but not limited to, the duration, severity, speed and scope of the outbreak, the length of time required for demand to return and normal economic and operating conditions to resume.

Consolidated Financial Statemen

Consolidated Financial Statements Issuance	12 Months Ended
	Dec. 31, 2019
Disclosure of Consolidated Financial Statements Issuance [Abstract]
Consolidated financial statements issuance	26. Consolidated financial statements issuance These consolidated financial statements have been issued on May 27, 2020 by Ing. Rufino Vigil Gonzalez and C.P. Mario Moreno Cortez, General Director and Financial Coordinator of Grupo Simec, S.A.B. de C.V., for the approval of the Audit Committee and, where appropriate, by the Board of Directors.

Basis of preparation and pres_2

Basis of preparation and presentation of the consolidated financial statements (Policies)	12 Months Ended
	Dec. 31, 2019
Disclosure of basis of preparation and presentation of the consolidated financial statements [Abstract]
Conversion of foreign subsidiaries financial statements	a. Conversion of foreign subsidiaries financial statements – The Effects of Changes in Foreign Exchange Rates The U.S. dollar (US Dollar or USD$) was considered as the functional currency of all the U.S. subsidiaries and Brazilian real for subsidiaries established in Brazil; therefore, the financial statements of these subsidiaries abroad were converted to Mexican pesos applying: - The exchange rates at the balance sheet date, to all assets and liabilities. - The historical exchange rate at stockholders’ equity accounts and revenues, costs and expenses. The conversion differences are carried directly to the consolidated statements of comprehensive income as other comprehensive income under the caption translation effects of foreign subsidiaries. Relevant exchange rates used in the conversion of the financial statements of foreign subsidiaries were as follows (Mexican pesos per one U.S. dollar): Current exchange rate as of December 31, 2019 18.87 Current exchange rate as of December 31, 2018 19.66 Average exchange rate for the year ended December 31, 2019 (*) 19.26 Average exchange rate for the year ended December 31, 2018 (*) 19.23 Current exchange rate as of May, 27 of 2020 22.56 (*) Average exchange rate used to translate revenues, costs and expenses of the companies mentioned above.
Business combinations	b. Business combinations – At the date of acquisition, the identifiable assets acquired and the liabilities assumed are recognized at their fair value, except: - Deferred tax assets or liabilities and liabilities or assets related to employee benefit arrangements, which are recognized and measured in accordance with IAS 12, Income Taxes, Employee Benefits, - Assets (or disposal groups) that are classified as held for sale in accordance with IFRS 5, Non- Assets Held for Sale and Discontinued Operations, Any excess of the cost of acquisition for the Group's interest in the net fair value of the identifiable assets, liabilities and contingent liabilities of the associated company recognized at the date of acquisition is recognized as goodwill. Goodwill is included in the carrying amount of the investment and is assessed for impairment annually. Any excess of the Group's interest in the net fair value of the assets, liabilities and contingent liabilities over the cost of acquisition, after the reassessment, is immediately recognized in profit and loss. When the consideration transferred by the Company in a business combination includes assets or liabilities resulting from a contingent consideration arrangement, the contingent consideration is measured at its acquisition-date fair value and later adjustments to the consideration are recognized against goodwill, providing that it has arisen from reliable information on the fair value at the acquisition date and occur during the ‘measurement period’ (which cannot exceed one year from the acquisition date). All other subsequent adjustments are recognized in profit or loss. The subsequent accounting for changes in the fair value of the contingent estimates that do not qualify as measurement period adjustments depends on how the contingent consideration is classified. Contingent consideration that is classified as equity is not remeasured at subsequent reporting dates. Contingencies classified as assets or liabilities are remeasured at subsequent reporting dates in accordance with IAS 37, Provisions, Contingent Liabilities and Contingent Assets When a business combination is achieved in stages, the Company’s previously held equity interest in the acquiree are remeasured to fair value at the acquisition date (i.e. the date when the Company obtains control) and the resulting gain or loss, if any, is recognized in profit or loss. Amounts arising from interests in the acquiree prior to the acquisition date that have been previously recognized in other comprehensive income (loss) are reclassified to profit or loss where such treatment would be appropriate if that interest were disposed of. If the initial accounting for a business combination is incomplete by the end of the reporting period in which the combination occurs, the Company reports provisional amounts for the items for which the accounting is incomplete. Those provisional amounts are adjusted during the measurement period, or additional assets or liabilities are recognized, to reflect new information obtained about facts and circumstances that existed at the acquisition date that, if known, would have affected the amounts recognized at that date.
Cash and cash equivalents and temporary investments	c. Cash and cash equivalents and temporary investments – Temporary investments in equity instruments are measured at the fair value prevailing at the date of the financial statements. Subsequent changes in the fair value are recognized in profit or loss.
Allowances for doubtful accounts	d. Allowances for doubtful accounts –
Inventories and cost of sales	e. Inventories and cost of sales – The Company classifies raw material inventory in the Consolidated Statements of Financial Position based on its expected consumption period, presenting as long-term inventories those which in accordance with historical data and production trends will not be consumed in the short-term (one year). The Company classified as long-term inventory certain parts and rollers that, according to historical data and trends, showing that such inventories will not be consumed in the short-term. The Company utilizes coke, a form of coal, as a raw material input to fuel its blast furnace which has been inactive in Lorain, Ohio USA plant (see Note 9). The Company has 136,541 metric tons (MT) of coke inventory valued at 747 million Mexican pesos (average of USD$ 290/MT) on hand at December 31, 2019 and 136,541 MT of coke inventory valued at 953 million Mexican pesos (average of USD$ 355.00/MT) on hand at December 31, 2018 that is classified as long-term in the accompanying Consolidated Statements of Financial Position. The Company follows the practice of providing a reserve for slow-moving inventory, considering the total of products and raw materials (including coke) with a turnover above one year, which is recorded in the statement of financial position and against account is the cost of sales. The cost of sales of the Company includes inventory costs, outbound freight charges, purchasing and receiving costs, inspection costs, and warehousing costs in cost of goods sold. Vendor payment incentives are recorded as a reduction to cost of goods sold.
Property, plant and equipment	f. Property plant and equipment – r An item of property, plant and equipment is derecognized upon disposal or when no future economic benefits are expected to arise from the continued use of the asset. Any gain or loss arising on the disposal or retirement of an item of property, plant and equipment is determined as the difference between the sales proceeds and the carrying amount of the asset and is recognized in profit or loss. The initial estimated useful lives of the Company’s main assets are as follows: Years Buildings 10 to 65 Machinery and equipment 5 to 40 Transportation equipment 4 Furniture, mixtures and computer equipment 3 to 10 Repair and maintenance costs that significantly increase productive capacity or extend the useful lives of existing plant and equipment are capitalized. Supplies, comprising of spare parts and consumables for internal use are classified under property, plant and equipment and expensed as incurred in the manufacturing process. All other repair and maintenance costs are expensed as incurred. Capital expenditures for projects that cannot be put into use immediately are included in constructions and machinery in-progress. When constructions and machinery in-progress are completed, they are transferred to depreciable assets.
Leases	g. Leases –
Costs for loans	h. Costs for loans – Investment income earned on the temporary investment of specific loans pending their expenditure on qualifying assets is deducted from the costs for loans eligible for capitalization. All other costs for loans are recognized in profit or loss in the period in which they are incurred.
Intangible assets	i. Intangible assets – Expenditure on research activities is recognized as an expense in the period in which it is incurred. An internally-generated intangible asset arising from development (or from the development phase of an internal project) is recognized if, and only if, all of the following have been demonstrated: - The technical feasibility of completing the intangible asset so that it will be available for use or sale; - The intention to complete the intangible asset and use or sell it; - The ability to use or sell the intangible asset; - How the intangible asset will generate probable future economic benefits; - The availability of adequate technical, financial and other resources to complete the development and to use or sell the intangible asset; and - The ability to measure reliably the expenditure attributable to the intangible asset during its development. The amount initially recognized for internally-generated intangible assets is the sum of the expenditure incurred from the date when the intangible asset first meets the recognition criteria listed above. Where no internally-generated intangible asset can be recognized, development expenditure is recognized in profit or loss in the period in which it is incurred. Subsequent to initial recognition, internally-generated intangible assets are reported at cost less accumulated amortization and accumulated impairment losses, on the same basis as intangible assets that are acquired separately. Intangible assets acquired in a business combination and recognized separately from goodwill are initially recognized at their fair value at the acquisition date (which is regarded as their cost). Subsequent to initial recognition, intangible assets acquired in a business combination are reported at cost less accumulated amortization and accumulated impairment losses, on the same basis as intangible assets that are acquired separately. An intangible asset is derecognized on disposal, or when no future economic benefits are expected from use or disposal. Gains or losses arising from derecognition of an intangible asset, measured as the difference between the net disposal proceeds and the carrying amount of the asset, are recognized in profit or loss.
Goodwill	j. Goodwill –
Impairment of tangible and intangible assets other than goodwill	k. Impairment of tangible and intangible assets other than goodwill – An impairment loss is recognized immediately in profit or loss, unless the relevant asset is carried at a revalued amount, in which case the impairment loss is treated as a revaluation decrease. Where an impairment loss subsequently reverses, the carrying amount of the asset (or a cash-generating unit) is increased to the revised estimate of its recoverable amount, but so that the increased carrying amount does not exceed the carrying amount that would have been determined had no impairment loss been recognized for the asset (or cash-generating unit) in prior years. For purposes of allocation of goodwill when there is business combination will be distributed among each of the cash generating units of the acquiring entity, expected synergy benefits. A reversal of an impairment loss is recognized immediately in profit or loss and allocated to the assets of that unit, the carrying amount of an asset other than goodwill attributable to a reversal of an impairment loss of value shall not exceed the carrying amount that would have been obtained if had not recognized an impairment loss in value for the asset in prior periods. Unless the related asset is recognized at a revalued amount, in which case the reversal of the impairment loss is treated as a revaluation increase.
Provisions	l. Provisions The amount recognized as a provision is the best estimate of the consideration required to settle the present obligation at the balance sheet date, taking into account the risks and uncertainties surrounding the obligation. Where a provision is measured using the cash flows estimated to settle the present obligation, it´s carrying amount is the present value of those cash flows.
Employee benefits	m. Employee benefits – The retirement benefit liability is determined based on the present value of the defined benefit obligation at the date of the statement of financial position. Any compensation included in the determination of the liability premiums corresponds to seniority premiums for retirement. Actuarial gains and losses are recognized on profit or loss for the year. The retirement benefit liability and the related net cost of the period are determined under the projected unit credit method based on projected salaries and certain assumptions determined by independent actuaries. Liabilities for employee benefits recognized in the consolidated statement of financial position represent the present value of the defined benefit obligation. Republic operates various employee benefit plans. The contributions to these benefit plans are either contractually determined by the terms of a collective bargaining agreement with the United Steelworkers or they are under the terms of a defined contribution plan. Accordingly, the company pays fixed contributions to separate entities and they are expensed in the period in which the employees rendered the services entitling them to the benefits.
Earnings per share	n. Earnings per share –
Income taxes	o. Income taxes – - Current tax - Deferred tax The carrying amount of deferred tax assets is reviewed at each balance sheet date and reduced by a valuation allowance to the extent that it is no longer probable that sufficient taxable earnings will be available to allow all or part of the asset to be recovered. Deferred tax assets and liabilities are computed using the tax rates that are expected to apply in the period in which the liability is settled or the asset realized, based on tax rates (and tax laws) that have been enacted or substantively enacted by the balance sheet date. The effects of changes in the statutory rates are accounted for in the period that includes the enactment date. The measurement of deferred tax liabilities and assets reflects the tax consequences that would follow from the manner in which the Company expects, at the reporting date, to recover or settle the carrying amount of its assets and liabilities. Deferred tax assets and liabilities are offset when there is a legally enforceable right to set off current tax assets against current tax liabilities and when they relate to income taxes levied by the same taxation authority and the Company intends to settle its current tax assets and liabilities on a net basis. The Company follows the practice of recognizing the benefit from the amortization of acquired or generated tax losses in current earnings that are amortized. - Current and deferred tax for the period - Interests on recoverable tax balances
Foreign currencies	p. Foreign currencies – Exchange differences are recognized in profit or loss in the period in which they arise except for: - Exchange differences on foreign currency borrowings relating to assets under construction for future productive use, which are included in the cost of those assets when they are regarded as an adjustment to interest costs on those foreign currency borrowings; - Exchange differences on transactions entered into in order to hedge certain foreign currency risks; and - Exchange differences on monetary items receivable from or payable to a foreign operation for which settlement is neither planned nor likely to occur (therefore forming part of the net investment in the foreign operation), which are recognized initially in other comprehensive income and reclassified from equity to profit or loss on sell all or part of the net investment.
Financial instruments	q. Financial instruments – Financial assets and financial liabilities are initially measured at fair value. Transaction costs that are directly attributable to the acquisition or issue of financial assets and financial liabilities are added to or deducted from the fair value of the financial assets or financial liabilities, as appropriate, on initial recognition. Transaction costs directly attributable to the acquisition of financial assets or financial liabilities at fair value through profit or loss are recognized immediately in profit or loss.
Financial assets	r. Financial assets – The effective interest method is a method of calculating the amortized cost of a debt instrument and of allocating interest income over the relevant period. The effective interest rate is the rate that exactly discounts estimated future cash receipts (including all fees and points paid or received that form an integral part of the effective interest rate, transaction costs and other premiums or discounts) through the expected life of the debt instrument, or, (where appropriate), a shorter period, to the net carrying amount on initial recognition. The Company does not have financial assets classified as “available-for-sale financial assets”. Loans and receivables are non-derivative financial assets with fixed or determinable payments that are not quoted in an active market. Loans and accounts receivable are measured at amortized cost using the effective interest method, less any impairment. Financial assets are assessed for indicators of impairment at the end of each reporting period. Financial assets are considered to be impaired when there is objective evidence that, as a result of one or more events that occurred after the initial recognition of the financial asset, the estimated future cash flows of the investment have been affected. Objective evidence of impairment could include: - Significant financial difficulty of the issuer or counterparty; - Breach of contract, such as a default or delinquency in interest or principal payments; - It becoming probable that the borrower will enter bankruptcy or financial re-organization; or - The disappearance of an active market for that financial asset because of financial difficulties. For certain categories of financial assets, such as trade receivables, assets that are assessed not to be impaired individually are, in addition, assessed for impairment on a collective basis. Objective evidence of impairment for a portfolio of receivables could include the Company’s past experience of collecting payments, as well as observable changes in national or local economic conditions that correlate with default on receivables. For financial assets carried at amortized cost, the amount of the impairment loss recognized is the difference between the asset’s carrying amount and the present value of estimated future cash flows, discounted at the financial asset’s original effective interest rate. The carrying amount of the financial asset is reduced by the impairment loss directly for all financial assets with the exception of trade receivables, where the carrying amount is reduced through the use of an allowance account. When a trade receivable is considered uncollectible, it is written off against the allowance account. Subsequent recoveries of amounts previously written off are credited against the allowance account. Changes in the carrying amount of the allowance account are recognized in profit or loss. Except for equity instruments available for sale, if, in a subsequent period, the amount of the impairment loss decreases and the decrease can be related objectively to an event occurring after the impairment was recognized, the previously recognized impairment loss is reversed through profit or loss to the extent that the carrying amount of the investment at the date the impairment is reversed does not exceed what the amortized cost would have been had the impairment not been recognized. The Company recognizes a financial asset only when the contractual rights to the cash flows from the asset expire, or when it transfers the financial asset and substantially all the risks and rewards of ownership of the asset to another entity. If the Company neither transfers nor retains substantially all the risks and rewards of ownership and continues to control the transferred asset, the Company recognizes its retained interest in the asset and an associated liability for amounts it may have to pay. If the Company retains substantially all the risks and rewards of ownership of a transferred financial asset, the Company continues to recognize the financial asset and also recognizes a collateralized borrowing for the proceeds received. On recognition totally a financial asset, the difference between the carrying amount of an asset and the sum of the consideration received and receivable and the cumulative gain or loss that had been recognized in other comprehensive income and accumulated in equity is recognized in profit or loss. When the financial asset is partially derecognized (when the Company retains the option to repurchase part of a transferred asset, or retains residual interest that does not result in the retention of substantial risks and rewards of ownership and the Company retains control), the Company will distribute the initial value of the financial asset between the part that continues to be recognized and the part that is no longer recognized based on the fair values ​​ of various parts as of the transfer date. The difference between the book value assigned to the part that is no longer recognized and the sum of the consideration received by such part; and any accumulated profit or loss assigned to it that has been recognized in other comprehensive income will be recognized in the consolidated income statement.
Financial liabilities	s. Financial liabilities – Financial liability at fair value with changes through profit or loss is a financial liability classified as held for trading or it is designated as at fair value with changes through profit or loss. A financial liability is classified as held for trading if: - It has been acquired principally for the purpose of repurchasing it in the near term; - On initial recognition, it is part of a portfolio of identified financial instruments that the Company manages together and has a recent actual pattern of short-term profit-taking; or - It is a derivative that has not been designated as a hedging instrument and fulfils the condition to be effective. A financial liability other than a financial liability held for trading may be designated as at fair value through profit or loss upon initial recognition if: - Such designation eliminates or significantly reduces a measurement or recognition inconsistency that would otherwise arise; - The financial liability forms part of a group of financial assets or financial liabilities or both, which is managed and its performance is evaluated on a fair value basis, in accordance with the Company’s documented risk management or investment strategy, and information about the grouping is provided internally on that basis; or - It forms part of a contract containing one or more embedded derivatives, and IAS 39, Financial Instruments: Recognition and Measurement, - Financial liabilities at fair value through profit or loss are recorded at fair value, with any gains or losses arising on remeasurement recognized in profit or loss. The net gain or loss recognized in profit or loss incorporates any interest paid on the financial liability and is included in the ‘other gains and losses' line item in the consolidated statement of comprehensive income. - Other financial liabilities including borrowings are subsequently measured at amortized cost using the effective interest method. The effective interest method is a method of calculating the amortized cost of a financial liability and of allocating interest expense over the relevant period. The effective interest rate is the rate that exactly discounts estimated future cash payments through the expected life of the financial liability, or (where appropriate a shorter period), to the net carrying amount on initial recognition. - The Company derecognizes financial liabilities when, and only when, the Company’s obligations are discharged, cancelled or expire. The difference between the carrying amount of the financial liability derecognized and the consideration paid and payable is recognized in profit or loss at that time.
Derivative financial instruments	t. Derivative financial instruments – These derivatives are initially recognized at fair value at the date the derivative contracts are entered into and subsequently are remeasured to the fair value at the end of reporting period. The resulting gain or loss is recognized in profit or loss immediately unless the derivative is designated and effective as a hedging instrument, in which event the timing of the recognition in profit or loss depends on the nature of the hedge relationship. To mitigate the risks associated with changes in natural gas prices occurring naturally as a result of the supply and demand on international markets, the Company uses natural gas cash-flow exchange contracts or natural gas swaps to offset fluctuations in the price of natural gas, whereby the Company receives a floating price and pays a fixed price. Fluctuations in natural gas prices from volumes consumed are recognized as part of the Company’s operating cost. At the inception of the hedge relationship, the Company documents the relationship between the hedging instrument and the hedged item, along with its risk management objectives and its strategy for undertaking various hedge transactions. Furthermore, at the inception of the hedge and on an ongoing basis, the Company documents whether the hedging instrument is highly effective in offsetting exposure to changes in fair values or cash flows of the hedged item attributable to the hedged risk. The effective portion of changes in the fair value of derivatives that are designated and qualify as cash flow hedges is recognized in other comprehensive income and accumulated under the heading of fair value of derivative financial instruments, The Company periodically evaluates the changes in cash flows of the derivative instrument to analyze if the swaps are highly effective for mitigating the exposure to natural gas price fluctuations. A hedge instrument is considered to be highly effective when changes in its fair value or cash flows of the primary position are compensated on a regular or cumulatively basis, by changes in fair value or cash flows of the hedging instrument in a range between 80% and 125%. Amounts previously recognized in other comprehensive income are reclassified to profit or loss in the periods when the hedged item is recognized in profit or loss, in the same line of the consolidated statement of comprehensive income as the recognized hedged item. However, when the hedged forecasted transaction results in the recognition of a non-financial asset or a non-financial liability, the gains and losses previously accumulated in equity are transferred from equity and included in the initial measurement of the cost of the non-financial asset or non-financial liability. Hedge accounting is discontinued when the Company revokes the hedging relationship, when the hedging instrument expires or is sold, terminated, or exerted, or when it no longer qualifies for hedge accounting. Any gain or loss accumulated from the hedge instrument that had been recognized in other comprehensive income and accumulated in equity at that time remains in equity until the forecast transaction is ultimately recognized in profit or loss. When a forecast transaction is no longer expected to occur, the gain or loss accumulated in equity is recognized immediately in profit or loss.
Revenue from contracts with customers	u. Revenue from contracts with customers – Sale of goods: In May 2014, the IASB issued IFRS 15, "Revenue from contracts with customers", which sets out the requirements in accounting for revenue arising from contracts with customers and which is based on the principle that revenue is recognized when control of a good or service is transferred to the customer. The Company has adopted IFRS 15 Revenue from Contracts with Customers, which resulted in no changes in accounting policies and adjustments to the amounts recognized in the financial statements. The Company’s revenues are mainly recognized at a point of time from sales to direct customers. The Company does not have any obligations to be fulfilled in the contracts, which are obligations to be fulfilled separately and in which a portion of the transaction price should be allocated, other than the delivery of products confirming to the specifications of a customer purchase order. When determining the transaction price for the sale of products, the Company would consider the possible effects of the variable consideration, the existence of important financing components, the consideration other than cash and the consideration payable to the client. Contract balances Contract assets An asset of the contract is the right to obtain a consideration in exchange for the goods or services transferred to the client when that right is conditioned by something other than the passage of time. If the Company fulfills an obligation by transferring goods or services to a customer before the customer pays the consideration or before collection is due, an asset derived from the contract is recognized for the conditional consideration that the Company is entitled to collect. Accounts receivable An account receivable represents the company's right to collect a consideration that is unconditional, that is, only the passage of time is required so that the payment of the consideration is payable. Contract liabilities A contract liability is the obligation of an entity to transfer goods or services to a customer from whom the entity has already received a consideration (advance from customers) or that consideration is already payable. If a customer pays a consideration, or the Company has an unconditional right to receive an amount as consideration before the Company transfers a good or service to the customer, the Company recognizes a contract liability when the payment is made or is due.
Financial information by operating segment	v. Financial information by operating segment -
Environmental liabilities	w. Environmental liabilities -
Cost of sales and expenses by function	x. Cost of sales and expenses by function -

Basis of preparation and pres_3

Basis of preparation and presentation of the consolidated financial statements (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of basis of preparation and presentation of the consolidated financial statements [Abstract]
Schedule of Subsidiaries	As of December 31, 2019, and 2018, the subsidiaries of Grupo Simec, S.A.B. de C.V. included in the consolidation are the following: Percentage of equity owned Subsidiaries established in Mexico: 2 0 1 9 2 0 1 8 Compañia Siderurgica de Guadalajara, S.A. de C.V. 99.99% 99.99% Arrendadora Simec, S.A. de C.V. 100.00% 100.00% Simec International, S.A. de C.V. 100.00% 100.00% Compañia Siderurgica del Pacifico, S.A. de C.V. 99.99% 99.99% Coordinadora de Servicios Siderurgicos de Calidad, S.A. de C.V. (8) 100.00% 100.00% Industrias del Acero y del Alambre, S.A. de C.V. 99.99% 99.99% Procesadora Mexicali, S.A. de C.V. 99.99% 99.99% Servicios Simec, S.A. de C.V. 100.00% 100.00% Sistemas de Transporte de Baja California, S.A. de C.V. 100.00% 100.00% Operadora de Servicios Siderurgicos de Tlaxcala, S.A. de C.V. (8) 100.00% 100.00% Operadora de Metales, S.A. de C.V. (8) 100.00% 100.00% Administradora de Servicios Siderurgicos de Tlaxcala, S.A. de C.V. (8) 100.00% 100.00% CSG Comercial, S.A. de C.V. 99.95% 99.95% Operadora de Servicios de la Industria Siderurgica ICH, S.A. de C.V. 100.00% 100.00% Corporacion Aceros DM, S.A. de C.V. and subsidiaries (1) 100.00% 100.00% Acero Transportes San, S.A. de C.V. (1) 100.00% 100.00% Simec Acero, S.A. de C.V. (8) 100.00% 100.00% Corporacion ASL, S. A. de C.V. 99.99% 99.99% Simec International 6, S.A. de C.V. (8) 100.00% 100.00% Simec International 7, S.A. de C.V. 99.99% 99.99% Simec International 9, S.A.P.I. de C.V. 100.00% 100.00% Corporativos G&DL, S.A. de C.V. (8) 100.00% 100.00% Orge, S.A. de C.V. 99.99% 99.99% Siderurgica del Occidente y Pacifico, S.A. de C.V. 100.00% 100.00% RRLC, S.A.P.I. de C.V. (8) 95.10% 95.10% Grupo Chant, S.A.P.I. de C.V. (8) 97.61% 97.61% Aceros Especiales Simec Tlaxcala, S.A. de C.V. 100.00% 100.00% Recursos Humanos de la Industria Siderurgica de Tlaxcala, S.A. de C.V. 100.00% 100.00% GSIM de Occidente S.A. de C.V. 100.00% 100.00% Fundiciones de Acero Estructural, S.A. de C.V. 100.00% 100.00% Siderúrgicos Noroeste, S.A. de C.V. (9) 100.00% 100.00% Simec Siderúrgico, S.A. de C.V. (10) 100.00% 100.00% Subsidiaries established in foreign countries: SimRep Corporation and Subsidiaries (3) (4) (5) 99.41% 50.22% Pacific Steel, Inc. (4) 100.00% 100.00% Pacific Steel Projects, Inc. (4) 100.00% 100.00% Simec Steel, Inc. (4) 100.00% 100.00% Simec USA, Corp. (4) 100.00% 100.00% Undershaft Investments, NV. (6) 100.00% 100.00% GV do Brasil Industria e Comercio de Aço LTDA (7) 100.00% 100.00% Companhia Siderurgica do Espiritu Santo S.A. (10) (7) 100.00% 100.00% GS Steel B.V. (2) Liquidated 100.00% (1) Companies located in San Luis Potosi. For purposes of this report constitute the “Grupo San”. (2) Company established in Netherlands. (3) ICH owns 0.59% of the shares in this company at December 31, 2019. (4) Companies established in the United States of America, except a subsidiary of SimRep which is established in Canada. (5) SimRep as an individual company has no significant operations or assets, except for its investment in Republic Steel. For purposes of this report, these companies are named “Republic”. (6) Company established in Curaçao. (7) Company established in Brazil. (8) Companies that have lost the entire capital stock, except Operadora de Metales, S.A. de C.V. which only have lost 2/3 of their capital stock. (9) Company incorporated in 2017. (10) Company incorporated in 2018.
Schedule of Relevant Exchange Rates Used	The conversion differences are carried directly to the consolidated statements of comprehensive income as other comprehensive income under the caption translation effects of foreign subsidiaries. Relevant exchange rates used in the conversion of the financial statements of foreign subsidiaries were as follows (Mexican pesos per one U.S. dollar): Current exchange rate as of December 31, 2019 18.87 Current exchange rate as of December 31, 2018 19.66 Average exchange rate for the year ended December 31, 2019 (*) 19.26 Average exchange rate for the year ended December 31, 2018 (*) 19.23 Current exchange rate as of May, 27 of 2020 22.56 (*) Average exchange rate used to translate revenues, costs and expenses of the companies mentioned above.
Schedule of Estimated Useful Lives of Assets	The initial estimated useful lives of the Company’s main assets are as follows: Years Buildings 10 to 65 Machinery and equipment 5 to 40 Transportation equipment 4 Furniture, mixtures and computer equipment 3 to 10

Cash and cash equivalents and_2

Cash and cash equivalents and other investments (Tables)	12 Months Ended
	Dec. 31, 2019
Cash and cash equivalents [abstract]
Schedule of Cash and cash equivalents	Cash and cash equivalents are as follows: December 31, 2 0 1 9 2 0 1 8 Cash $ 898,394 $ 514,166 Cash equivalents (1) 6,548,053 6,473,075 $ 7,446,447 $ 6,987,241 (1) Cash equivalents are investments with initial original maturities of less than 90 days and consist primarily of Treasury Bills issued by the United States Treasury Department.

Trade receivables - Net (Tables

Trade receivables - Net (Tables)	12 Months Ended
	Dec. 31, 2019
Trade and other receivables [abstract]
Schedule of Age of Receivables Past Due	Age of net receivables that are past due were as follows: At December 31, 2 0 1 9 2 0 1 8 30 - 60 days $ 279,048 $ 221,996 61 - 90 days 121,790 57,119 91 + days 535,955 188,262 Total $ 936,793 $ 467,377
Schedule of Allowance for Doubtful Accounts	During the years ended December 31, 2019 and 2018, the movement in the allowance for doubtful accounts was as follows: 2 0 1 9 2 0 1 8 Balance at beginning of year $ 231,778 $ 199,855 Provisions 4,529 7,486 Recoveries (63) Translations effects 854 24,437 Balance at end of year $ 237,098 $ 231,778

Recoverable taxes (Tables)

Recoverable taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of Recoverable taxes [Abstract]
Schedule of Recoverable Taxes	December 31, 2 0 1 9 2 0 1 8 Valued Added Tax $ 781,082 $ 2,262,172 Income Tax 185,243 137,408 Other 445 8,294 $ 966,770 $ 2,407,874

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of Inventories [Abstract]
Schedule of Short-term and Long-term Inventories	December 31, 2 0 1 9 2 0 1 8 Finished goods $ 1,900,624 $ 1,961,627 Work in process 109,247 79,914 Billets 1,791,802 2,046,143 Raw materials and supplies 2,760,319 4,576,732 Materials, spare parts and rollers 1,146,705 1,154,586 Materials in transit 534,516 319,420 $ 8,243,213 $ 10,138,422 Non-current inventory: December 31, 2 0 1 9 2 0 1 8 Coke $ 747,300 $ 952,786 Spare parts 68,587 54,783 Rollers 144,486 140,009 Finished godos 353,095 353,095 1,313,468 1,500,673 Less, valuation allowance at the lower of cost or net realizable value. (353,095) (353,095) $ 960,373 $ 1,147,578

Property, plant and equipment (

Property, plant and equipment (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [abstract]
Schedule of Cost of Investment Property, Plant and Equipment	Cost of property, plant and equipment is as follows (in millions of Mexican pesos): Land Buildings Machinery and equipment Transportation equipment Furniture, mixtures and computer equipment Constructions and machinery in-progress Total Balance to January 1, 2018 1,094 4,776 24,805 158 129 3,434 34,396 Additions 137 90 1,305 1 11 1,370 2,914 Translation adjustments (14) (186) (543) (1) (4) (748) Balance as of December 31, 2018 1,217 $ 4,680 $ 25,567 $ 159 $ 139 $ 4,800 $ 36,562 Additions 89 591 532 2 4 53 1,271 Translation adjustments (15) (133) (563) 0 (2) (92) (805) Balance as of December 31, 2019 $ 1,291 $ 5,138 $ 25,536 $ 161 $ 141 $ 4,761 $ 37,028
Schedule of Accumulated Depreciation of Property, Plant and Equipment	Accumulated depreciation of property, plant and equipment is as follows (in millions of Mexican pesos): Buildings Machinery and equipment Transportation equipment Furniture, mixtures and computer equipment Total Balance to January 1, 2018 1,033 17,474 80 72 18,659 Depreciation expense 37 1,057 3 5 1,102 Translation effects (15) (151) (2) (2) (170) Balance as of December 31, 2018 1,055 $ 18,380 $ 81 $ 75 $ 19,591 Depreciation expense 30 1,063 4 2 1,099 Translation effects (3) (396) 0 0 (399) Balance as of December 31, 2019 $ 1,082 $ 19,047 $ 85 $ 77 $ 20,291
Schedule of Net Book Value of Property, Plant and Equipment	The net book value of property, plant and equipment is as follows (in millions of Mexican pesos): Net Book Value: Land Buildings Machinery and Equipment Transportation equipment Furniture, mixtures and computer equipment Constructions and machinery in-progress Total Balance as of December 31, 2017 $ 1,094 $ 3,743 $ 7,331 $ 78 $ 57 $ 3,434 $ 15,737 Balance as of December 31, 2018 $ 1,217 $ 3,625 $ 7,187 $ 78 $ 64 $ 4,800 $ 16,971 Balance as of December 31, 2019 $ 1,291 $ 4,056 $ 6,489 $ 76 $ 64 $ 4,761 $ 16,737

Intangible and other long-ter_2

Intangible and other long-term assets (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of detailed information about intangible assets [abstract]
Schedule of Balances	The balances as of December 31, 2019 and 2018 are as follows: 2 0 1 9 Amortization period (years) Assets Original Value Accumulated amortization Net Republic trade mark $ 101,657 $ $ 101,657 * Kobe Tech contract 118,471 118,471 12 Customers list 62,056 47,379 14,678 20 Total from Republic (1) 282,184 165,849 116,335 Customers list 2,205,700 2,205,700 9 San 42 trademark (2) 329,600 329,600 * Goodwill (2) 1,814,160 1,814,160 * Total from Grupo San (3) 4,349,460 2,205,700 2,143,760 4,631,644 2,371,549 2,260,095 Other assets 75,022 75,022 $ 4,706,666 $ 2,371,549 $ 2,335,117 2 0 1 8 Amortization period (years) Assets Original Value Accumulated Amortization Net Republic trade mark $ 105,879 $ $ 105,879 * Kobe Tech contract 123,392 123,392 12 Customers list 64,634 43,359 21,275 20 Total from Republic (1) 293,905 166,751 127,154 Customers list 2,205,700 2,205,700 9 San 42 trademark (2) 329,600 329,600 * Goodwill (2) 1,814,160 1,814,160 * Total from Grupo San (3) 4,349,460 2,205,700 2,143,760 4,643,365 2,372,451 2,270,914 Other assets 29,138 29,138 $ 4,672,503 $ 2,372,451 $ 2,300,052 * Intangible assets with undefined useful life. (1) Intangible assets from the Republic acquisition. (2) The San 42 trademark and the goodwill are presented net of impairment losses recorded in 2009 for $16,000 and $2,352,000, respectively. (3) Intangible assets from the Grupo San acquisition.
Schedule of Reconciliation between Opening and Closing Balances	The reconciliation between the opening and closing balances of each year is presented below: Assets Original Value Accumulated amortization Net Balance at January 1, 2018 $ 4,841,423 $ (2,369,875) $ 2,471,548 Additions 10,087 (10,087) Disposals (122,487) (122,487) Adjustment effect of the year (56,520) 7,511 (49,009) Balance as of December 31, 2018 $ 4,672,503 $ (2,372,451) $ 2,300,052 Additions 9,880 (9,880) Adjustment effect of the year 24,283 10,782 35.065 Balance as of December 31, 2019 $ 4,706,666 $ (2,371,549) $ 2,335,117

Accounts payable trade and ot_2

Accounts payable trade and other accrued liabilities (Tables)	12 Months Ended
	Dec. 31, 2019
Trade and other payables [abstract]
Schedule of Accounts payable trade and other accrued liabilities	December 31, 2 0 1 9 2 0 1 8 Trade accounts payable $ 4,179,830 $ 4,390,413 Other accrued liabilities 1,547,214 2,057,557 $ 5,727,044 $ 6,447,970

Employee benefits (Tables)

Employee benefits (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of defined benefit plans [abstract]
Schedule of Net Cost of Period Related to Retirement Benefits Plan	The most important actuarial hypothesis used for the purposes of the determination of the net cost of the period related to the retirement benefits plan were as follows: 2 0 1 9 2 0 1 8 2 0 1 7 Discount rate 7.7 9.5 7.5 Rate of salary increase 4.5 4.5 4.5
Schedule of Components of Net Cost of Benefits Plan to Employees	Components of net cost of benefits plan to employees are as follows: 2 0 1 9 2 0 1 8 2 0 1 7 Current service cost $ 2,179 $ 2,839 $ 5,697 Financial cost 4,242 4,025 6,637 Past service cost 1,947 1,481 (3,575) Anticipated reduction obligations 296 (327) (12,517) Actuarial losses (gains) recognized in the year 32,934 (17,928) (4,339) $ 41,598 $ (9,910) $ (8,097)
Schedule of Components of Expense	The expense for the years 2019, 2018 and 2017 was recorded as follows: 2 0 1 9 2 0 1 8 2 0 1 7 Cost of sales $ 23,296 $ (5,550) $ (4,534) Administrative expenses 18,302 (4,360) (3,563) $ 41,598 $ (9,910) $ (8,097)
Schedule of Defined Benefit Obligation and Balance of Liability	Changes in the present value of the defined benefit obligation and the balance of the liability consist of the following: 2 0 1 9 2 0 1 8 Opening balance of the defined benefit obligation $ 81,770 $ 91,822 Current service cost 2,179 2,697 Past service cost 1,947 1,481 Financial cost 4,242 4,025 Actuarial losses (gains) 32,934 (17,928) Benefits paid 296 (327) Closing balance of the defined benefit obligation $ 123,368 $ 81,770

Income taxes (Tables)

Income taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Major components of tax expense (income) [abstract]
Schedule of Income Tax Charged (Credited)	The analysis of the income tax charged to the results of 2019, 2018 and 2017 is as follows: 2 0 1 9 2 0 1 8 2 0 1 7 Income tax of the year for Mexican companies $ 3,177,506 $ 67,745 $ 19 Income tax year for foreign companies 301,263 444,104 44,751 Deferred tax for Mexican companies 12,978 408,141 656,060 Deferred tax for foreign companies (215,473) (167,528) 421,979 $ 3,276,274 $ 752,462 $ 1,122,809
Schedule of Income Tax Expense (Benefit)	During 2019 and 2018, the income tax expense (benefit) attributable to income was different from the one that will result for applying 30% (tax rate in Mexico) before these provisions, as a result of the items shown below: 2 0 1 9 2 0 1 8 2 0 1 7 Expected benefit, expense $ 514,294 $ 1,308,828 $ 890,249 Increase (decrease) as a result of: Inflation effect, net (417,960) (114,419) (217,249) Impact of the nominal rate differences between the USA and Mexico (23,368) (35,914) (16,572) Benefit from utilization of tax loss carry-forward sand others (1) (987,135) (1,238,444) (115,068) Others, net (includes permanent items) 1,802,118 832,411 581,449 Income tax expense (2) $ 887,949 $ 752,462 $ 1,122,809 Effective tax rate 54.26% 17.92% 37.21% (1) This amount corresponds to the income tax benefit obtained by those companies that used tax loss carry-forwards in the years presented that were generated previously 2019, 2018 and 2017 , less the effect of tax losses incurred by some subsidiaries for which no deferred tax asset was recorded. (2) For the purpose of determining the effective tax rate, the payments corresponding to taxes from previous years and expenses that were paid by various group companies derived from repair agreements during the 2019 fiscal year were not considered within the income tax expense.
Schedule of Tax Losses Pending of Amortize	As of December 31, 2019, Grupo Simec, S.A.B. de C.V. and certain of its Mexican subsidiaries have updated tax losses pending of amortize as follows: Origin Date Expiration Date Tax losses available 2011 2021 9,293,585 (1) 2012 2022 9 2013 2023 4,842 2014 2024 16,198 2015 2025 7,874 2016 2026 121,737 2017 2027 310,041 2018 2028 112,323 2019 2029 1,196,196 $ 11,062,805 (1) This amount includes $ 9,268,569 corresponding to a tax loss from the sale of shares which, according to the Income Tax Law, can only be applied against taxable profits on the sale of shares generated in the future.
Schedule of Deferred Income Tax Liability	Below is a summary of the effects of the main temporary differences comprising the deferred income tax liability included in the consolidated statements of financial position. December 31, 2 0 1 9 2 0 1 8 Deferred tax assets: Allowance for doubtful accounts $ (50,476) $ 1,045 Advances from customers 182,635 113,224 Deferred tax assets 132,159 114,269 Deferred tax liabilities: Property, plant and equipment 3,159,719 3,224,295 Intangible assets from Grupo San 318,768 310,025 Provisions 30,641 57,816 Prepaid expenses 33,137 29,879 Total deferred liabilities 3,542,265 3,622,015 Deferred tax liabilities, net $ 3,410,106 $ 3,507,746

Stockholders' equity (Tables)

Stockholders' equity (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of classes of share capital [abstract]
Schedule of Common Stock	Common stock as of December 31, 2019 and 2018, is as follows: Number of shares (in thousands) Amount Fixed capital 90,850 $ 441,786 Variable capital 406,859 1,978,444 497,709 2,420,230 Effect of restatement 412,038 Total 497,709 $ 2,832,268
Schedule of Reconciliation of Number of Shares Outstanding	A reconciliation of the number of shares outstanding shows below: Thousands of shares 2 0 1 9 2 0 1 8 Shares outstanding at beginning of year 466,643 494,047 Repurchase of capital shares, net (2,664) (27,044) Shares outstanding at year end 463,979 466,643

Non-controlling interest (Table

Non-controlling interest (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of Non-controlling interest [Abstract]
Schedule of Non-controlling Interest Changes	The table below shows the changes for the years ended December 31, 2019 and 2018: 2 0 1 9 2 0 1 8 Balance at beginning of year $ (323,369) $ (108,572) Share of profits and losses for the year (333,109) (206,417) Share of translation effects of foreign subsidiaries (116,648) (8,380) Balance at the end of the year $ (773,126) $ (323,369)

Transactions and balances wit_2

Transactions and balances with related parties (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of transactions between related parties [abstract]
Schedule of Transactions with Related Parties	Transactions with related parties, carried out in the ordinary course of business, were as follows: 2 0 1 9 2 0 1 8 2 0 1 7 Holding company Interest expense $ $ 7,346 $ 5,325 Interest income 265,200 210,514 198,054 Management staff Administrative services expenditures 23,548 23,494 25,603 Other related parties Sales 249,560 20,375 3,632 Purchases 438,052 372,759 51,760 Direct short-term benefits (*) 106,631 90,600 82,447 (*) Correspond to the salaries, allowances and bonuses paid to the executives of Simec.
Schedule of Balances Receivable from and Payable to Related Parties	Balances receivable from and payable to related parties are as follows: December 31, 2 0 1 9 2 0 1 8 Short term Accounts receivable: Compañía Laminadora Vista Hermosa, S.A. de C.V. $ $ 360 Operadora Construalco, S.A. de C.V. 717 548 Operadora Industrial de Herramientas, S.A. de C.V. 38 912 Perfiles Comerciales Sigosa, S.A. de C.V. 2,250 1,597 Joist del Golfo, S.A. de C.V. 5,105 6,516 Others 5,815 5,798 $ 13,925 $ 15,731 These balances correspond to accounts receivable for services and / or sales of specific finished products for their activity. December 31, 2 0 1 9 2 0 1 8 Loans to related parties: Compañia Laminadora Vista Hermosa, S.A. de C.V. $ $ 183,171 Operadora Compañia Mexicana de Tubos, S.A. de C.V. 38,232 Compañia Manufacturera de Tubos, S.A. de C.V. 44,472 $ $ 265,875 Total short term $ 13,925 $ 281,606 December 31, 2 0 1 9 2 0 1 8 Long term Accounts receivable: Industrias CH, S.A.B. de C.V. $ 648,281 $ 648,281 $ 648,281 $ 648,281 Loans to related parties: Industrias CH, S.A.B de C.V. $ 780,989 $ 730,278 Perfiles Comerciales Sigosa, S.A. de C.V. 142,268 579,047 Proyectos Comerciales el Ninzi, S.A. de C.V. 376,790 $ 923,257 $ 1,686,115 Total, long term $ 1,571,538 $ 2,334,396 December 31, 2 0 1 9 2 0 1 8 Accounts payable: Aceros y Laminados Sigosa, S.A. de C.V. $ 1,853 $ 1,854 Industrias CH, S.A.B. de C.V. 208,223 205,879 Perfiles Comeciales Sigosa, S.A. de C.V. 3,632 Holding Protel, S.A. de C.V. 251 Compañia Laminadora Vista Hermosa, S.A. de C.V. 1,904 Operadora Perfiles Sigosa, S.A. de C.V. 5,850 112,587 Operadora Pytsa Industrial, S.A. de C.V. 8,233 5,185 Tuberias Procarsa, S.A. de C.V. 1,942 Compañia Manufacturera de Tubos, S.A. de C.V. 9,631 6,220 Others 1,949 924 $ 241,526 $ 334,591

Cost of sales and expenses by_2

Cost of sales and expenses by their nature (Tables)	12 Months Ended
	Dec. 31, 2019
Expenses by nature [abstract]
Schedule of Cost of Sales and Administration Expenses	At the years ended at December 31, 2019, 2018 and 2017, the cost of sales and administration expenses consist of the following: 2 0 1 9 2 0 1 8 2 0 1 7 Raw materials and consumables $ 16,411,788 $ 15,565,242 $ 11,268,400 Electrical energy 3,303,640 2,536,387 2,123,658 Ferroalloys 2,137,671 1,973,586 1,734,914 Refractories 707,214 613,563 492,781 Oxygen 276,648 279,272 213,838 Electrodes 1,293,096 1,463,091 419,741 Gas and fuels 962,001 766,163 612,605 Labor 2,042,433 3,181,556 2,699,414 Operation materials 919,893 954,415 1,000,752 Depreciation and amortization 1,108,629 1,112,418 1,465,759 Maintenance 2,221,595 2,243,255 2,586,507 Other expenses 319,958 954,379 615,100 $ 31,704,566 $ 31,643,327 $ 25,233,469 2 0 1 9 2 0 1 8 2 0 1 7 Cost of sales $ 30,067,141 $ 30,563,315 $ 23,994,526 Administrative expenses 1,637,425 1,080,012 1,238,943 $ 31,704,566 $ 31,643,327 $ 25,233,469

Other (income) expenses, net (T

Other (income) expenses, net (Tables)	12 Months Ended
	Dec. 31, 2019
Analysis of income and expense [abstract]
Schedule of Other Income (Expenses) Net	The components of other income (expenses) net, in the years ended December 31, 2019, 2018 and 2017, are the following: 2 0 1 9 2 0 1 8 2 0 1 7 Cancellation of balances $ 87,241 $ 786 $ 2,615 Land treatments in Pacific Steel, Inc. 3,362 8,922 7,674 Attorney’s fees 54,520 0 0 Bad debt estimate 5,320 0 0 Other expenses 150,443 9,708 10,289 Sale of scrap (3,182) (9,865) (10,434) Recovery of loss (6,397) (6,405) Update of balances in favor in taxes (2,699) (519) Other income (4,282) (5,791) (6,270) Other income (13,861) (24,760) (18,772) Other (income) and other expenses, net $ 136,582 $ (15,052) $ (6,934)

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of detailed information about financial instruments [abstract]
Schedule of Book Value of Assets and liabilities Denominated in Foreign Currency	The book value of the monetary assets and monetary liabilities denominated in foreign currency at the end of the reporting period are as follows (includes foreign subsidiaries): December 31, 2 0 1 9 2 0 1 8 Short – term assets $ 11,176,625 $ 11,649,108 Short – term liabilities 4,843,976 5,567,083 Net monetary asset position in foreign currency $ 6,332,649 $ 6,082,025 Equivalent in U.S. Dollars (thousands) USD$ 335,545 USD$ 309,414
Schedule of Additional Bank Lines of Credit	The following table sets out details of additional bank lines of credit (to be used as letter of credits) that the Company has at its disposal to reduce liquidity risk. These lines of credit are obtained by the Company and one part of them has been used for some of the subsidiaries of Industrias CH, S.A.B. de C.V.: (In thousands of US dollars) December 31, 2 0 1 9 2 0 1 8 Bank loans credit lines: Drawn balances $ 350,000 $ 350,000 Undrawn balances 116,596 128,681 Available line balance $ 233,404 $ 221,319

Financial information by segm_2

Financial information by segments (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of operating segments [abstract]
Schedule of Information by Region	The segments are engaged in the manufacturing and sale of long steel products intended mainly for the building and automotive industries. Year ended December 31, 2019 Mexico USA Brazil Eliminations between segments Total Net sales $ 18,530,672 $ 7,120,360 $ 8,520,169 $ $ 34,171,201 Cost of sales 14,934,575 7,752,776 7,379,790 30,067,141 Gross profit (loss) 3,596,097 (632,416 ) 1,140,379 4,104,060 Administrative expenses 848,495 267,756 521,174 1,637,425 Other income (expenses), net 175,412 (71,324 ) 32,494 136,582 Interest income 145,729 266 0 145,995 Interest expense 3,438 (84,621) (110,919) 137,053 (55,049) Exchange rate gain (loss), net 628,044 (2,745) 177,314 (18,030) 784,583 Income (loss) before income taxes 2,093,313 (910,458) 298,478 155,083 1,636,416 Income taxes 3,505,015 (236,598) 7,857 3,276,274 Net income (loss) for the year $ (1,411,702) $ (673,860) $ 290,621 $ 155,083 $ (1,639,858) Depreciation and amortization $ 577,048 $ 260,760 $ 270,821 $ 1,108,629 Total assets 34,761,662 8,419,771 6,002,701 $ (3,343,456) 45,840,678 Total liabilities 9,079,632 4,219,817 3,274,908 (3,343,456) 13,230,901 Acquisitions of property, plant and equipment 785,818 278,467 207,135 1,271,420 Year ended December 31, 2018 Mexico USA Brazil Eliminations between segments Total Net sales $ 20,507,794 $ 9,246,444 $ 5,924,015 $ $ 35,678,253 Cost of sales 15,715,761 9,294,352 5,553,202 30,563,315 Gross profit (loss) 4,792,033 (47,908) 370,813 5,114,938 Administrative expenses 592,218 267,905 219,889 1,080,012 Other income (expenses), net 11,367 3,685 15,052 Interest income 307,279 5,542 312,821 Interest expense 52,226 (99,985) (103,141) 134,389 (16,511) Exchange rate gain (loss), net 445,289 7,522 (602,747) 3,040 (146,896) Income (loss) before income taxes 5,015,976 (399,049) (554,964) 137,429 4,199,392 Income taxes 905,482 7,145 (160,165) 752,462 Net income (loss) for the year $ 4,110,494 $ (406,194) $ (394,799) $ 137,429 $ 3,446,930 Depreciation and amortization $ 587,407 $ 268,635 $ 256,376 $ 1,112,418 Total assets 40,617,874 10,181,967 6,733,362 $ (8,679,380) 48,853,823 Total liabilities 8,458,465 10,815,692 2,750,043 (8,679,380) 13,344,820 Acquisitions of property, plant and equipment 1,552,587 433,154 8,724 1,994,465 Year ended December 31, 2017 Mexico USA Brazil Eliminations between segments Total Net sales $ 17,125,369 $ 8,370,999 $ 3,204,082 $ $ 28,700,450 Cost of sales 13,340,648 7,814,180 2,839,698 23,994,526 Gross profit (loss) 3,784,721 556,819 364,384 4,705,924 Administrative expenses (753,676) (257,001) (228,266) (1,238,943) Other income (expenses), net (98,915) 105,849 6,934 Interest income 252,074 217 252,291 Interest expense (7,459) (50,962) (65,186) $ 69,203 (54,404) Exchange rate gain (loss), net (1,291,909) (26,256) 1,861 661,942 (654,362) Income (loss) before income taxes 1,884,836 328,666 72,793 731,145 3,017,440 Income taxes 786,902 322,444 13,463 1,122,809 Net income (loss) for the year $ 1,097,934 $ 6,222 $ 59,330 $ 731,145 $ 1,894,631 Other information: Depreciation and amortization $ 677,665 $ 538,699 $ 249,395 $ 1,465,759 Total assets 32,878,144 10,548,895 5,356,860 $ (2,807,367) 45,976,532 Total liabilities 1,134,438 10,760,999 2,570,925 (2,807,367) 11,658,995 Acquisitions of property, plant and equipment 2,394,541 622,785 22,175 3,039,501
Schedule of Information on Products	Information on products: Year ended December 31, 2 0 1 9 2 0 1 8 2 0 1 7 Light structural $ 1,396,632 $ 1,654,720 $ 1,557,567 Structural 3,304,178 2,441,079 2,232,979 Bars 2,220,264 1,575,291 1,065,731 Rebar 12,370,490 12,363,530 8,931,862 Flat rebar 1,833,576 2,271,347 1,552,578 Hot rolled bars 8,226,613 9,549,286 8,594,130 Cold drawn bars 3,102,544 3,779,385 3,370,150 Others 1,716,904 2,043,615 1,395,453 $ 34,171,201 $ 35,678,253 $ 28,700,450
Schedule of Information About Geographical Areas	Information about geographical areas: Year ended December 31, 2 0 1 9 2 0 1 8 2 0 1 7 Mexico $ 17,873,633 $ 20,421,529 $ 16,712,874 USA 7,544,078 8,975,585 8,333,259 Brazil 8,500,592 5,932,297 3,214,117 Canada 175,686 267,606 370,803 Latin America 60,672 60,578 30,173 Other (Europe and Asia) 16,540 20,658 39,224 $ 34,171,201 $ 35,678,253 $ 28,700,450

Significant events (Details)

Significant events (Details) $ / shares in Units, $ in Thousands, $ in Thousands	Dec. 31, 2018USD ($)shares$ / shares	May 01, 2018T	Dec. 05, 2017MXN ($)shares
Senales del Norte S.A. de C.V. [Member]
Disclosure of detailed information about business combination [line items]
Shares acquired by subsidiary, value | $			$ 122,660
Senales del Norte S.A. de C.V. [Member] | Class I Shares [Member]
Disclosure of detailed information about business combination [line items]
Shares acquired by subsidiary			2,000
Percentage of capital stock acquired by subsidiary			100.00%
Senales del Norte S.A. de C.V. [Member] | Class II Shares [Member]
Disclosure of detailed information about business combination [line items]
Shares acquired by subsidiary			3,908,782
Percentage of capital stock acquired by subsidiary			100.00%
First Steel Mill of ArcelorMittal in Brazil [Member]
Disclosure of detailed information about business combination [line items]
Production capacity | T		600,000
Second Steel Mill of ArcelorMittal in Brazil [Member]
Disclosure of detailed information about business combination [line items]
Production capacity | T		120,000
SimRep Corporation [Member]
Disclosure of detailed information about business combination [line items]
Shares acquired by subsidiary	83,862
Percentage of capital stock acquired by subsidiary	99.41%
Number of common shares acquired per share price | $ / shares	$ 3,454
Amount of Consideration | $	$ 289,660

Basis of preparation and pres_4

Basis of preparation and presentation of the consolidated financial statements (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019MXN ($)Mg	Dec. 31, 2018MXN ($)Mg
Disclosure of subsidiaries [line items]
Coke inventory | Mg	136,541	136,541
Coke inventory, value	$ 747,000	$ 953,000
Bottom of range [Member]
Disclosure of subsidiaries [line items]
Percentage range of changes in fair value or cash flows of hedging instrument	80.00%
Top of range [Member]
Disclosure of subsidiaries [line items]
Percentage range of changes in fair value or cash flows of hedging instrument	125.00%
USD [Member]
Disclosure of subsidiaries [line items]
Average price of coke per metric tons	$ 290	$ 355
ICH (Holding Company) share in SimRep Corporation and Subsidiaries [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	0.59%

Basis of preparation and pres_5

Basis of preparation and presentation of the consolidated financial statements (Schedule of Subsidiaries) (Details)		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Compania Siderurgica de Guadalajara, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		99.99%	99.99%
Arrendadora Simec, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		100.00%	100.00%
Simec International, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		100.00%	100.00%
Compania Siderurgica del Pacifico, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		99.99%	99.99%
Coordinadora de Servicios Siderurgicos de Calidad, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[1]	100.00%	100.00%
Industrias del Acero y del Alambre, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		99.99%	99.99%
Procesadora Mexicali, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		99.99%	99.99%
Servicios Simec, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		100.00%	100.00%
Sistemas de Transporte de Baja California, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		100.00%	100.00%
Operadora de Servicios Siderurgicos de Tlaxcala, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[1]	100.00%	100.00%
Operadora de Metales, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[1]	100.00%	100.00%
Administradora de Servicios Siderurgicos de Tlaxcala, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[1]	100.00%	100.00%
CSG Comercial, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		99.95%	99.95%
Operadora de Servicios de la Industria Siderurgica ICH, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		100.00%	100.00%
Corporacion Aceros DM, S.A. de C.V. and subsidiaries [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[2]	100.00%	100.00%
Acero Transportes San, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[2]	100.00%	100.00%
Simec Acero, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[1]	100.00%	100.00%
Corporacion ASL, S. A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		99.99%	99.99%
Simec International 6, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[1]	100.00%	100.00%
Simec International 7, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		99.99%	99.99%
Simec International 9, S.A.P.I. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		100.00%	100.00%
Corporativos G&DL, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[1]	100.00%	100.00%
Orge, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		99.99%	99.99%
Siderurgica del Occidente y Pacifico, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		100.00%	100.00%
RRLC, S.A.P.I. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[1]	95.10%	95.10%
Grupo Chant, S.A.P.I. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[1]	97.61%	97.61%
Aceros Especiales Simec Tlaxcala, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		100.00%	100.00%
Recursos Humanos de la Industria Siderurgica de Tlaxcala, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		100.00%	100.00%
GSIM de Occidente S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		100.00%	100.00%
Fundiciones de Acero Estructural, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned		100.00%	100.00%
Siderurgicos Noroeste, S.A. DE C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[3]	100.00%	100.00%
Simec Siderurgico, S.A. de C.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[4]	100.00%	100.00%
SimRep Corporation and Subsidiaries [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[5],[6],[7]	99.41%	50.22%
Pacific Steel, Inc. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[5]	100.00%	100.00%
Pacific Steel Projects, Inc. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[5]	100.00%	100.00%
Simec Steel, Inc. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[5]	100.00%	100.00%
Simec USA, Corp. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[5]	100.00%	100.00%
Undershaft Investments, NV. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[8]	100.00%	100.00%
GV do Brasil Industria e Comercio de Aco LTDA [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[9]	100.00%	100.00%
Companhia Siderurgica do Espiritu Santo S.A. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[4],[9]	100.00%	100.00%
GS Steel B.V. [Member]
Disclosure of subsidiaries [line items]
Percentage of equity owned	[10]		100.00%
[1]	Companies that have lost the entire capital stock, except Operadora de Metales, S.A. de C.V. which only have lost 2/3 of their capital stock.
[2]	Companies located in San Luis Potosi. For purposes of this report constitute the "Grupo San".
[3]	Company incorporated in 2017.
[4]	Company incorporated in 2018.
[5]	Companies established in the United States of America, except a subsidiary of SimRep which is established in Canada.
[6]	ICH owns 0.59% of the shares in this company at December 31, 2019.
[7]	SimRep as an individual company has no significant operations or assets, except for its investment in Republic Steel. For purposes of this report, these companies are named "Republic".
[8]	Company established in Curacao.
[9]	Company established in Brazil.
[10]	Company established in Netherlands.

Basis of preparation and pres_6

Basis of preparation and presentation of the consolidated financial statements (Schedule of Relevant Exchange Rates) (Details)		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	May 27, 2020
Disclosure of subsidiaries [line items]
Current exchange rate as of (Mexican pesos per one U.S. dollar)		18.87	19.66
Average exchange rate for the year ended December 31 (Mexican pesos per one U.S. dollar)	[1]	19.26	19.23
Non-adjusting events after reporting period [member]
Disclosure of subsidiaries [line items]
Current exchange rate as of (Mexican pesos per one U.S. dollar)				22.56
[1]	Average exchange rate used to translate revenues, costs and expenses of the companies mentioned above.

Basis of preparation and pres_7

Basis of preparation and presentation of the consolidated financial statements (Schedule of Estimated Useful Lives) (Details)	12 Months Ended
	Dec. 31, 2019
Buildings [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of assets in Years	10 to 65
Machinery and equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of assets in Years	5 to 40
Transportation equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of assets in Years	4
Furniture, mixtures and computer Equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of assets in Years	3 to 10

Cash and cash equivalents and_3

Cash and cash equivalents and other investments (Schedule of Cash and cash equivalents) (Details) - MXN ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash and cash equivalents [abstract]
Cash		$ 898,394	$ 514,166
Cash equivalents	[1]	6,548,053	6,473,075
Total cash and cash equivalents		$ 7,446,447	$ 6,987,241	$ 7,203,604	$ 7,536,534
[1]	Cash equivalents are investments with initial original maturities of less than 90 days and consist primarily of Treasury Bills issued by the United States Treasury Department.

Trade receivables - Net (Narrat

Trade receivables - Net (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Trade and other receivables [abstract]
Amount of advances related to allocation of accounts	$ 30,000
Nominal amount of accounts receivables	11,200	$ 23,100
Discounts fees	300	500
Amount of recovered by buyer	$ 0	$ 2,700

Trade receivables - Net (Schedu

Trade receivables - Net (Schedule of Age of Receivables Past Due) (Details) - MXN ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Disclosure of financial assets that are either past due or impaired [line items]
Total	$ 936,793	$ 467,377
Trade receivables [Member] | 30 - 60 days [Member]
Disclosure of financial assets that are either past due or impaired [line items]
Total	279,048	221,996
Trade receivables [Member] | 61 - 90 days [Member]
Disclosure of financial assets that are either past due or impaired [line items]
Total	121,790	57,119
Trade receivables [Member] | 91 + days [Member]
Disclosure of financial assets that are either past due or impaired [line items]
Total	$ 535,955	$ 188,262

Trade receivables - Net (Sche_2

Trade receivables - Net (Schedule of Allowance for Doubtful Accounts) (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Trade and other receivables [abstract]
Balance at beginning of year	$ 231,778	$ 199,855
Provisions	4,529	7,486
Recoveries	(63)
Translations effects	854	24,437
Balance at end of year	$ 237,098	$ 231,778

Recoverable taxes (Details)

Recoverable taxes (Details) - MXN ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Disclosure of Recoverable taxes [Abstract]
Valued Added Tax	$ 781,082	$ 2,262,172
Income Tax	185,243	137,408
Other	445	8,294
Total recoverable taxes	$ 966,770	$ 2,407,874

Inventories (Schedule of Short-

Inventories (Schedule of Short-term and Long-term Inventories) (Details) - MXN ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Short-term:
Finished goods	$ 1,900,624	$ 1,961,627
Work in process	109,247	79,914
Billets	1,791,802	2,046,143
Raw materials and supplies	2,760,319	4,576,732
Materials, spare parts and rollers	1,146,705	1,154,586
Materials in transit	534,516	319,420
Short-term Inventories, net	8,243,213	10,138,422
Long-term:
Coke	747,300	952,786
Spare parts	68,587	54,783
Rollers	144,486	140,009
Finished godos	353,095	353,095
Long-term inventories, gross	1,313,468	1,500,673
Less, valuation allowance at the lower of cost or net realizable value	(353,095)	(353,095)
Long-term inventories, net	$ 960,373	$ 1,147,578

Property, plant and equipment_2

Property, plant and equipment (Narrative) (Details) $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019MXN ($)	Dec. 31, 2018MXN ($)	Dec. 31, 2019USD ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018USD ($)	Dec. 31, 2018MXN ($)	Dec. 31, 2017MXN ($)
Disclosure of detailed information about property, plant and equipment [line items]
Depreciation expense	$ 1,098,749	$ 1,102,331
Net Book Value				$ 16,737,595		$ 16,970,832	$ 15,737,081
Lorain Ohio facility [Member] | USD [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Net Book Value			$ 41,500		$ 32,700

Property, plant and equipment_3

Property, plant and equipment (Schedule of Cost of Investment Property, Plant and Equipment) (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	$ 16,970,832	$ 15,737,081
Balance at end of year	16,737,595	16,970,832
Land [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	1,217,000	1,094,000
Balance at end of year	1,291,000	1,217,000
Buildings [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	3,625,000	3,743,000
Balance at end of year	4,056,000	3,625,000
Machinery and equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	7,187,000	7,331,000
Balance at end of year	6,489,000	7,187,000
Transportation equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	78,000	78,000
Balance at end of year	76,000	78,000
Furniture, mixtures and computer Equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	64,000	57,000
Balance at end of year	64,000	64,000
Constructions and machinery in-progress [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	4,800,000	3,434,000
Balance at end of year	4,761,000	4,800,000
Cost [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	36,562,000	34,396,000
Additions	1,271,000	2,914,000
Translation adjustments	(805,000)	(748,000)
Balance at end of year	37,028,000	36,562,000
Cost [Member] | Land [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	1,217,000	1,094,000
Additions	89,000	137,000
Translation adjustments	(15,000)	(14,000)
Balance at end of year	1,291,000	1,217,000
Cost [Member] | Buildings [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	4,680,000	4,776,000
Additions	591,000	90,000
Translation adjustments	(133,000)	(186,000)
Balance at end of year	5,138,000	4,680,000
Cost [Member] | Machinery and equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	25,567,000	24,805,000
Additions	532,000	1,305,000
Translation adjustments	(563,000)	(543,000)
Balance at end of year	25,536,000	25,567,000
Cost [Member] | Transportation equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	159,000	158,000
Additions	2,000	1,000
Translation adjustments	0
Balance at end of year	161,000	159,000
Cost [Member] | Furniture, mixtures and computer Equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	139,000	129,000
Additions	4,000	11,000
Translation adjustments	(2,000)	(1,000)
Balance at end of year	141,000	139,000
Cost [Member] | Constructions and machinery in-progress [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	4,800,000	3,434,000
Additions	53,000	1,370,000
Translation adjustments	(92,000)	(4,000)
Balance at end of year	$ 4,761,000	$ 4,800,000

Property, plant and equipment_4

Property, plant and equipment (Schedule of Accumulated Depreciation of Property, Plant and Equipment) (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	$ 16,970,832	$ 15,737,081
Depreciation expense	1,098,749	1,102,331
Balance at end of year	16,737,595	16,970,832
Buildings [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	3,625,000	3,743,000
Balance at end of year	4,056,000	3,625,000
Machinery and equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	7,187,000	7,331,000
Balance at end of year	6,489,000	7,187,000
Transportation equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	78,000	78,000
Balance at end of year	76,000	78,000
Furniture, mixtures and computer Equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	64,000	57,000
Balance at end of year	64,000	64,000
Accumulated amortization [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	19,591,000	18,659,000
Depreciation expense	1,099,000	1,102,000
Translation effects	(399,000)	(170,000)
Balance at end of year	20,291,000	19,591,000
Accumulated amortization [Member] | Buildings [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	1,055,000	1,033,000
Depreciation expense	30,000	37,000
Translation effects	(3,000)	(15,000)
Balance at end of year	1,082,000	1,055,000
Accumulated amortization [Member] | Machinery and equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	18,380,000	17,474,000
Depreciation expense	1,063,000	1,057,000
Translation effects	(396,000)	(151,000)
Balance at end of year	19,047,000	18,380,000
Accumulated amortization [Member] | Transportation equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	81,000	80,000
Depreciation expense	4,000	3,000
Translation effects	0	(2,000)
Balance at end of year	85,000	81,000
Accumulated amortization [Member] | Furniture, mixtures and computer Equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance at beginning of year	75,000	72,000
Depreciation expense	2,000	5,000
Translation effects	0	(2,000)
Balance at end of year	$ 77,000	$ 75,000

Property, plant and equipment_5

Property, plant and equipment (Schedule of Net Book Value of Property, Plant and Equipment) (Details) - MXN ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of detailed information about property, plant and equipment [line items]
Net Book Value	$ 16,737,595	$ 16,970,832	$ 15,737,081
Land [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Net Book Value	1,291,000	1,217,000	1,094,000
Buildings [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Net Book Value	4,056,000	3,625,000	3,743,000
Machinery and equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Net Book Value	6,489,000	7,187,000	7,331,000
Transportation equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Net Book Value	76,000	78,000	78,000
Furniture, mixtures and computer Equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Net Book Value	64,000	64,000	57,000
Constructions and machinery in-progress [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Net Book Value	$ 4,761,000	$ 4,800,000	$ 3,434,000

Intangible and other long-ter_3

Intangible and other long-term assets (Narrative) (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2009
Disclosure of detailed information about intangible assets [line items]
Amortization of intangible assets	$ 9,880	$ 10,087	$ 125,384
Trademark San 42 [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible assets impairment loss				$ 16,000
Goodwill [Member]
Disclosure of detailed information about intangible assets [line items]
Goodwill impairment loss				$ 2,352,000

Intangible and other long-ter_4

Intangible and other long-term assets (Schedule of Balances) (Details) - MXN ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross		$ 2,260,095	$ 2,270,914
Other assets		75,022	29,138
Intangible and other non-current assets, net		2,335,117	2,300,052	$ 2,471,548
Republic [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross	[1]	116,335	127,154
Grupo San [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross	[2]	2,143,760	2,143,760
Republic trade mark [Member] | Republic [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross		$ 101,657	$ 105,879
Kobe Tech contract [Member] | Republic [Member]
Disclosure of detailed information about intangible assets [line items]
Amortization period (years)		12	12
Customers list [Member] | Republic [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross		$ 14,678	$ 21,275
Amortization period (years)		20	20
Customers list [Member] | Grupo San [Member]
Disclosure of detailed information about intangible assets [line items]
Amortization period (years)		9	9
Trademark San 42 [Member] | Grupo San [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross	[3]	$ 329,600	$ 329,600
Goodwill [Member] | Grupo San [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross	[3]	1,814,160	1,814,160
Cost [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross		4,631,644	4,643,365
Other assets		75,022	29,138
Intangible and other non-current assets, net		4,706,666	4,672,503	4,841,423
Cost [Member] | Republic [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross	[1]	282,184	293,905
Cost [Member] | Grupo San [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross	[2]	4,349,460	4,349,460
Cost [Member] | Republic trade mark [Member] | Republic [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross		101,657	105,879
Cost [Member] | Kobe Tech contract [Member] | Republic [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross		118,471	123,392
Cost [Member] | Customers list [Member] | Republic [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross		62,056	64,634
Cost [Member] | Customers list [Member] | Grupo San [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross		2,205,700	2,205,700
Cost [Member] | Trademark San 42 [Member] | Grupo San [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross	[3]	329,600	329,600
Cost [Member] | Goodwill [Member] | Grupo San [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross	[3]	1,814,160	1,814,160
Accumulated amortization [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross		2,371,549	2,372,451
Other assets
Intangible and other non-current assets, net		(2,371,549)	(2,372,451)	$ (2,369,875)
Accumulated amortization [Member] | Republic [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross	[1]	165,849	166,751
Accumulated amortization [Member] | Grupo San [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross	[2]	2,205,700	2,205,700
Accumulated amortization [Member] | Kobe Tech contract [Member] | Republic [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross		118,471	123,392
Accumulated amortization [Member] | Customers list [Member] | Republic [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross		47,379	43,359
Accumulated amortization [Member] | Customers list [Member] | Grupo San [Member]
Disclosure of detailed information about intangible assets [line items]
Intangible and other non-current assets, gross		$ 2,205,700	$ 2,205,700
[1]	Intangible assets from the Republic acquisition.
[2]	Intangible assets from the Grupo San acquisition.
[3]	The San 42 trademark and the goodwill are presented net of impairment losses recorded in 2009 for $16,000 and $2,352,000, respectively.

Intangible and other long-ter_5

Intangible and other long-term assets (Schedule of Reconciliation between Opening and Closing Balances) (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about intangible assets [line items]
Balance	$ 2,300,052	$ 2,471,548
Disposals		(122,487)
Adjustment effect of the year	35,065	(49,009)
Balance	2,335,117	2,300,052
Cost [Member]
Disclosure of detailed information about intangible assets [line items]
Balance	4,672,503	4,841,423
Additions	9,880	10,087
Disposals		(122,487)
Adjustment effect of the year	24,283	(56,520)
Balance	4,706,666	4,672,503
Accumulated amortization [Member]
Disclosure of detailed information about intangible assets [line items]
Balance	(2,372,451)	(2,369,875)
Additions	(9,880)	(10,087)
Adjustment effect of the year	10,782	7,511
Balance	$ (2,371,549)	$ (2,372,451)

Short-term debt (Details)

Short-term debt (Details) $ in Thousands, $ in Thousands	Dec. 31, 2019USD ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018USD ($)	Dec. 31, 2018MXN ($)	Aug. 17, 1998
Disclosure of detailed information about borrowings [line items]
Principal amount outstanding		$ 5,700		$ 5,936
Medium-term notes of Simec [Member]
Disclosure of detailed information about borrowings [line items]
Annual interest rate					10.50%
Principal amount outstanding		$ 5,700		$ 5,936
Medium-term notes of Simec [Member] | USD [Member]
Disclosure of detailed information about borrowings [line items]
Principal amount outstanding	$ 300		$ 300

Accounts payable trade and ot_3

Accounts payable trade and other accrued liabilities (Schedule of Accounts Payable Trade and Accrued Liabilities) (Details) - MXN ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Trade and other payables [abstract]
Trade accounts payable	$ 4,179,830	$ 4,390,413
Other accrued liabilities	1,547,214	2,057,557
Total accounts payable trade and other accrued liabilities	$ 5,727,044	$ 6,447,970

Employee benefits (Narrative) (

Employee benefits (Narrative) (Details) $ / shares in Units, $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2019MXN ($)$ / shares	Dec. 31, 2018USD ($)	Dec. 31, 2018MXN ($)	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)
Disclosure of defined benefit plans [line items]
Percentage of collective bargaining agreements	43.00%	43.00%	53.00%	53.00%
Percentage share of employers profits	10.00%	10.00%
Employee profit sharing amount		$ 633		$ 0
Percentage payment of workers daily integrated salary	2.00%	2.00%
Defined contribution plan expense		$ 12,338		$ 13,687		$ 12,838
Republic employees [Member]
Disclosure of defined benefit plans [line items]
Percentage of collective bargaining agreements	79.00%	79.00%	81.00%	81.00%
Agreement description	The agreement initially expired on August 15, 2016, was extended for three years through August 15, 2019, and further extended through August 15, 2022.	The agreement initially expired on August 15, 2016, was extended for three years through August 15, 2019, and further extended through August 15, 2022.
Company's quarterly contributions	The extended agreement provides that Company's quarterly contributions to fund the Republic Retirement VEBA Benefit Trust (the "Benefit Trust") be reduced from $2.6 million to $0.25 million beginning in August 15, 2016 through June 30, 2019. Effective July 1, 2019, the Company's contribution to the Benefit Trust changed to $4.00 per hour for each hour worked by USW represented employees. Effective August 16, 2019, the Company was no longer obligated to fund the Benefit Trust through the expiration of the extended agreement.	The extended agreement provides that Company's quarterly contributions to fund the Republic Retirement VEBA Benefit Trust (the "Benefit Trust") be reduced from $2.6 million to $0.25 million beginning in August 15, 2016 through June 30, 2019. Effective July 1, 2019, the Company's contribution to the Benefit Trust changed to $4.00 per hour for each hour worked by USW represented employees. Effective August 16, 2019, the Company was no longer obligated to fund the Benefit Trust through the expiration of the extended agreement.
Fixed amount per hour for each covered employees | $ / shares		$ 1.68
VEBA Benefit Trust [Member]
Disclosure of defined benefit plans [line items]
Agreement description	The cost contributions to these two funds have been reduced from USD $ 2.6 million to USD$ 0.25 million per quarter effective after the review of the collective agreement on August 16 2016.	The cost contributions to these two funds have been reduced from USD $ 2.6 million to USD$ 0.25 million per quarter effective after the review of the collective agreement on August 16 2016.
VEBA Benefit Trust [Member] | USD [Member]
Disclosure of defined benefit plans [line items]
Defined contribution plan expense	$ 1,100		$ 1,000		$ 1,000
401(k) Plans [Member] | USD [Member]
Disclosure of defined benefit plans [line items]
Defined contribution plan expense	$ 1,100		1,000		800
Profit Sharing and Incentive Compensation Plans [Member]
Disclosure of defined benefit plans [line items]
Agreement description	The labor agreement includes a profit sharing plan to which the Company is required to contribute The extended agreement modified the plan to the following quarterly pretax income, as defined in the labor agreement ("EBT"): 3% of EBT between $0 and $25 million per quarter; 4% of EBT between $25 and $75 million per quarter; and 5% of EBT over $75 million per quarter.	The labor agreement includes a profit sharing plan to which the Company is required to contribute The extended agreement modified the plan to the following quarterly pretax income, as defined in the labor agreement ("EBT"): 3% of EBT between $0 and $25 million per quarter; 4% of EBT between $25 and $75 million per quarter; and 5% of EBT over $75 million per quarter.
Profit Sharing and Incentive Compensation Plans [Member] | USD [Member]
Disclosure of defined benefit plans [line items]
Defined contribution plan expense			1,000		1,000
Benefits paid	0		800		900
Republic [Member] | USD [Member]
Disclosure of defined benefit plans [line items]
Defined contribution plan expense	$ 3,600		$ 3,000		$ 3,500

Employee benefits (Schedule of

Employee benefits (Schedule of Net Cost of Period Related to Retirement Benefits Plan) (Details)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of defined benefit plans [abstract]
Discount rate	77.00%	9.50%	7.50%
Rate of salary increase	4.50%	4.50%	4.50%

Employee benefits (Schedule o_2

Employee benefits (Schedule of Components of Net Cost of Benefits Plan to Employees) (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of defined benefit plans [line items]
Current service cost	$ 2,179	$ 2,697
Financial cost	4,242	4,025
Past service cost	(1,947)	(1,481)
Anticipated reduction obligations	296	(327)
Actuarial losses (gains) recognized in the year	32,934	(17,928)
Net cost of benefits	41,598	(9,910)	$ (8,097)
Employees [Member]
Disclosure of defined benefit plans [line items]
Current service cost	2,179	2,839	5,697
Financial cost	4,242	4,025	6,637
Past service cost	1,947	1,481	(3,575)
Anticipated reduction obligations	296	(327)	(12,517)
Actuarial losses (gains) recognized in the year	32,934	(17,928)	(4,339)
Net cost of benefits	$ 41,598	$ (9,910)	$ (8,097)

Employee benefits (Schedule o_3

Employee benefits (Schedule of Components of Expense) (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of defined benefit plans [abstract]
Cost of sales	$ 23,296	$ (5,550)	$ (4,534)
Administrative expenses	18,302	(4,360)	(3,563)
Net cost of benefits	$ 41,598	$ (9,910)	$ (8,097)

Employee benefits (Schedule o_4

Employee benefits (Schedule of Defined Benefit Obligation and Balance of Liability) (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of defined benefit plans [abstract]
Opening balance of the defined benefit obligation	$ 81,770	$ 91,822
Current service cost	2,179	2,697
Past service cost	1,947	1,481
Financial cost	4,242	4,025
Actuarial losses (gains)	32,934	(17,928)
Benefits paid	296	(327)
Closing balance of the defined benefit obligation	$ 123,368	$ 81,770

Income taxes (Narrative) (Detai

Income taxes (Narrative) (Details) R$ in Thousands, $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020MXN ($)	Dec. 31, 2019USD ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2019BRL (R$)	Dec. 31, 2018MXN ($)	Dec. 31, 2018BRL (R$)	Dec. 31, 2017	Dec. 31, 2016
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Effective tax rate		54.26%	54.26%	54.26%	17.92%	17.92%	37.21%
Amount of tax payments and expenses increase (decrease)			$ 2,323,700
GV do Brasil Industria e Comercio of Aco LTDA [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Tax losses			985,000		$ 1,025,000
Companhia Siderurgica do Espirito Santo S.A. [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Tax losses			94,000
USD [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Tax losses			$ 9,268,569
Brazil, Brazil Real [Member] | GV do Brasil Industria e Comercio of Aco LTDA [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Tax losses | R$				R$ 210345		R$ 202008
Brazil, Brazil Real [Member] | Companhia Siderurgica do Espirito Santo S.A. [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Tax losses | R$				R$ 20042
Mexican companies [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Effective tax rate		30.00%	30.00%	30.00%	30.00%	30.00%
Description of decree issued by finance ministry		As of November 18, 2015, the Finance Ministry (SHCP) issued a decree in which a fiscal incentive is given to those who pay income tax (ISR) under terms of the Titles II or IV, Chapter II, Section I of the Law of ISR. Taxpayers who had business income of up to 100 million pesos,	As of November 18, 2015, the Finance Ministry (SHCP) issued a decree in which a fiscal incentive is given to those who pay income tax (ISR) under terms of the Titles II or IV, Chapter II, Section I of the Law of ISR. Taxpayers who had business income of up to 100 million pesos,	As of November 18, 2015, the Finance Ministry (SHCP) issued a decree in which a fiscal incentive is given to those who pay income tax (ISR) under terms of the Titles II or IV, Chapter II, Section I of the Law of ISR. Taxpayers who had business income of up to 100 million pesos,
Percentage of investment of new fixed assets		69.00%	69.00%	69.00%			85.00%	82.00%
Amount of tax payments and expenses increase (decrease)			$ 2,323,700
Mexican companies [Member] | Income Tax Estimated Recovery [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Amount of tax payments and expenses increase (decrease)	$ 554,400
Republic [Member] | USD [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Tax losses		$ 249,700
Expiration period		expire between 2033 and 2038	expire between 2033 and 2038	expire between 2033 and 2038
State and local [Member] | USD [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Tax losses		$ 323,600
Expiration period		expire between 2020 and 2039	expire between 2020 and 2039	expire between 2020 and 2039
Canada [Member] | USD [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Tax losses		$ 5,500
Expiration period		expire between 2032 and 2039	expire between 2032 and 2039	expire between 2032 and 2039

Income taxes (Schedule of Incom

Income taxes (Schedule of Income Tax Charged (Credited)) (Details) - MXN ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Income taxes	[1]	$ 3,276,274	$ 752,462	$ 1,122,809
Mexican companies [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Income tax		3,177,506	67,745	19
Deferred Tax		12,978	408,141	656,060
Foreign companies [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Income tax		301,263	444,104	44,751
Deferred Tax		$ (215,473)	$ (167,528)	$ 421,979
[1]	For the purpose of determining the effective tax rate, the payments corresponding to taxes from previous years and expenses that were paid by various group companies derived from repair agreements during the 2019 fiscal year were not considered within the income tax expense.

Income taxes (Schedule of Inc_2

Income taxes (Schedule of Income Tax Expense (Benefit)) (Details) - MXN ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Major components of tax expense (income) [abstract]
Expected benefit, expense		$ 514,294	$ 1,308,828	$ 890,249
Increase (decrease) as a result of:
Inflation effect, net		(417,960)	(114,419)	(217,249)
Impact of the nominal rate differences between the USA and Mexico		(23,368)	(35,914)	(16,572)
Benefit from utilization of tax loss carry-forward and others	[1]	(987,135)	(1,238,444)	(115,068)
Others, net (includes permanent items)		1,802,118	832,411	581,449
Income tax expense		$ 887,949	$ 752,462	$ 1,122,809
Effective tax rate		54.26%	17.92%	37.21%
[1]	This amount corresponds to the income tax benefit obtained by those companies that used tax loss carry-forwards in the years presented that were generated previously 2019, 2018 and 2017 , less the effect of tax losses incurred by some subsidiaries for which no deferred tax asset was recorded.

Income taxes (Schedule of Tax L

Income taxes (Schedule of Tax Losses Pending of Amortize) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019MXN ($)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Tax losses available	$ 11,062,805
2011 [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Expiration Date	2021
Tax losses available	$ 9,293,585	[1]
2012 [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Expiration Date	2022
Tax losses available	$ 9
2013 [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Expiration Date	2023
Tax losses available	$ 4,842
2014 [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Expiration Date	2024
Tax losses available	$ 16,198
2015 [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Expiration Date	2025
Tax losses available	$ 7,874
2016 [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Expiration Date	2026
Tax losses available	$ 121,737
2017 [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Expiration Date	2027
Tax losses available	$ 310,041
2018 [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Expiration Date	2028
Tax losses available	$ 112,323
2019 [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Expiration Date	2029
Tax losses available	$ 1,196,196
[1]	This amount includes $ 9,268,569 corresponding to a tax loss from the sale of shares which, according to the Income Tax Law, can only be applied against taxable profits on the sale of shares generated in the future.

Income taxes (Schedule of Defer

Income taxes (Schedule of Deferred Income Tax Liability) (Details) - MXN ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Deferred tax assets	$ 132,159	$ 114,269
Deferred tax liabilities:
Total deferred liabilities	3,542,265	3,622,015
Deferred tax liabilities, net	3,410,106	3,507,746
Allowance for doubtful accounts [Member]
Deferred tax assets:
Deferred tax assets		1,045
Deferred tax assets reduction in allowance for doubtful accounts	(50,476)
Provisions [Member]
Deferred tax liabilities:
Total deferred liabilities	30,641	57,816
Advances from customers [Member]
Deferred tax assets:
Deferred tax assets	182,635	113,224
Property, plant and equipment [Member]
Deferred tax liabilities:
Total deferred liabilities	3,159,719	3,224,295
Intangible assets from Grupo San [Member]
Deferred tax liabilities:
Total deferred liabilities	318,768	310,025
Prepaid expenses [Member]
Deferred tax liabilities:
Total deferred liabilities	$ 33,137	$ 29,879

Stockholders' equity (Narrative

Stockholders' equity (Narrative) (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Statement Line Items [Line Items]
Percentage of legal reserve	5.00%
Legal reserve amount	$ 484,046	$ 484,046
Percentage of nominal capital	20.00%
Reserve		3,000,000
Increase reserve amount		5,000,000
Treasury Shares	$ 33,729,926	31,066,207
Treasury amount	2,059,668	1,903,610
Profit (loss) on treasury shares	$ 0	$ 4,239
Fixed capital, Shares	90,850,000	90,850,000
Variable capital, Shares	406,859,000	406,859,000
Class I Shares [Member]
Statement Line Items [Line Items]
Fixed capital, Shares	90,850,050
Class II Shares [Member]
Statement Line Items [Line Items]
Fixed capital, Shares	406,859,164

Stockholders' equity (Schedule

Stockholders' equity (Schedule of Common Stock) (Details) - MXN ($) shares in Thousands, $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Disclosure of classes of share capital [abstract]
Fixed capital, Shares	90,850	90,850
Variable capital, Shares	406,859	406,859
Share capital, Shares	497,709	497,709
Total shares	497,709	497,709
Fixed capital, Amount	$ 441,786	$ 441,786
Variable capital, Amount	1,978,444	1,978,444
Share capital, Amount	2,420,230	2,420,230
Effect of restatement, Amount	412,038	412,038
Total shares, Amount	$ 2,832,268	$ 2,832,268

Stockholders' equity (Schedul_2

Stockholders' equity (Schedule of Reconciliation of Number of Shares Outstanding) (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of classes of share capital [abstract]
Shares outstanding at beginning of year	466,643	494,047
Repurchase of capital shares, net	(2,664)	(140)
Shares outstanding at year end	463,979	466,643

Non-controlling interest (Sched

Non-controlling interest (Schedule of Non-controlling Interest Changes) (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of Non-controlling interest [Abstract]
Balance at beginning of year	$ (323,369)	$ (108,572)
Share of profits and losses for the year	(3,949)	(206,417)	$ (145)
Share of translation effects of foreign subsidiaries	(116,648)	(8,380)
Balance at the end of the year	$ 24,800	$ (323,369)	$ (108,572)

Transactions and balances wit_3

Transactions and balances with related parties (Narrative) (Details) $ in Thousands, $ in Thousands	Dec. 31, 2019USD ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018USD ($)	Dec. 31, 2018MXN ($)
Laminadora Vista Hermosa Company, S.A. de C.V [Member]
Disclosure of transactions between related parties [line items]
Loan				$ 182,256
Interest				915
Balance amount				183,171
Laminadora Vista Hermosa Company, S.A. de C.V [Member] | USD [Member]
Disclosure of transactions between related parties [line items]
Loan			$ 9,272,000
Operadora Compania Mexicana de Tubos S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Loan				37,347
Interest				885
Balance amount				38,232
Operadora Compania Mexicana de Tubos S.A. de C.V. [Member] | USD [Member]
Disclosure of transactions between related parties [line items]
Loan			1,900,000
Compania Manufacturera de Tubos, S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Loan				43,433
Interest				1,039
Balance amount				44,472
Compania Manufacturera de Tubos, S.A. de C.V. [Member] | USD [Member]
Disclosure of transactions between related parties [line items]
Loan			$ 2,209,600
Industrias CH, S.A.B. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Loan		$ 479,368		499,278
Interest		61,978		19,653
Balance amount		550,619		518,931
Value added tax payables		9,273
Industrias CH, S.A.B. de C.V. [Member] | USD [Member]
Disclosure of transactions between related parties [line items]
Loan	$ 25,400,000
Industrias CH, S.A.B. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Loan		186,752		186,752
Borrowings		780,989		730,278
Interest		37,602		21,881
Balance amount		230,370		211,347
Value added tax payables		6,016		2,714
Perfiles Comerciales Sigosa, S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Amount received		428,367
Balance amount		$ 142,268		$ 579,047

Transactions and balances wit_4

Transactions and balances with related parties (Schedule of Transactions with Related Parties) (Details) - MXN ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Holding company
Interest expense			$ 7,346	$ 5,325
Interest income		$ 265,200	210,514	198,054
Management staff
Administrative services expenditures		23,548	23,494	25,603
Other related parties
Sales		249,560	20,375	3,632
Purchases		438,052	372,759	51,760
Direct short-term benefits	[1]	$ 106,631	$ 90,600	$ 82,447
[1]	Correspond to the salaries, allowances and bonuses paid to the executives of Simec.

Transactions and balances wit_5

Transactions and balances with related parties (Schedule of Balances Receivable from and Payable to Related Parties) (Details) - MXN ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Disclosure of transactions between related parties [line items]
Accounts receivable	$ 13,925	$ 15,731
Loans to related parties		265,875
Loans to related parties, long term	923,257	1,686,115
Balances receivable	13,925	281,606
Total long term	1,571,538	2,334,396
Accounts payable	241,526	334,591
Compania Laminadora Vista Hermosa, S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Accounts receivable		360
Loans to related parties		183,171
Accounts payable	1,904
Operadora Construalco, S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Accounts receivable	717	548
Operadora Industrial de Herramientas, S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Accounts receivable	38	912
Perfiles Comerciales Sigosa, S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Accounts receivable	2,250	1,597
Loans to related parties	142,268	579,047
Accounts payable	3,632
Joist del Golfo, S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Accounts receivable	5,105	6,516
Other accounts receivable by operation [Member]
Disclosure of transactions between related parties [line items]
Accounts receivable	5,815	5,798
Operadora Compania Mexicana de Tubos S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Loans to related parties		38,232
Compania Manufacturera de Tubos, S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Loans to related parties		44,472
Accounts payable	9,631	6,220
Industrias CH, S.A.B. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Accounts receivable	648,281	648,281
Loans to related parties	780,989	730,278
Accounts payable	208,223	205,879
Proyectos Comerciales el Ninzi, S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Loans to related parties		376,790
Aceros y Laminados Sigosa, S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Accounts payable	1,853	1,854
Holding Protel, S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Accounts payable	251
Operadora Perfiles Sigosa, S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Accounts payable	5,850	112,587
Operadora Pytsa Industrial, S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Accounts payable	8,233	5,185
Tuberias Procarsa, S.A. de C.V. [Member]
Disclosure of transactions between related parties [line items]
Accounts payable		1,942
Others [Member]
Disclosure of transactions between related parties [line items]
Accounts payable	$ 1,949	$ 924

Cost of sales and expenses by_3

Cost of sales and expenses by their nature (Schedule of Cost of Sales and Administration Expenses) (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Expenses by nature [abstract]
Raw materials and consumables	$ 16,411,788	$ 15,565,242	$ 11,268,400
Electrical energy	3,303,640	2,536,387	2,123,658
Ferroalloys	2,137,671	1,973,586	1,734,914
Refractories	707,214	613,563	492,781
Oxygen	276,648	279,272	213,838
Electrodes	1,293,096	1,463,091	419,741
Gas and fuels	962,001	766,163	612,605
Labor	2,042,433	3,181,556	2,699,414
Operation materials	919,893	954,415	1,000,752
Depreciation and amortization	1,108,629	1,112,418	1,465,759
Maintenance	2,221,595	2,243,255	2,586,507
Other expenses	319,958	954,379	615,100
Total expense	31,704,566	31,643,327	25,233,469
Cost of sales	30,067,141	30,563,315	23,994,526
Administrative expenses	$ 1,637,425	$ 1,080,012	$ 1,238,943

Other (income) expenses, net (S

Other (income) expenses, net (Schedule of Other Income (Expenses) Net) (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Analysis of income and expense [abstract]
Cancellation of balances	$ 87,241	$ 786	$ 2,615
Land treatments in Pacific Steel, Inc.	3,362	8,922	7,674
Attorney’s fees	54,520	0	0
Bad debt estimate	5,320	0	0
Other expenses	150,443	9,708	10,289
Sale of scrap	(3,182)	(9,865)	(10,434)
Recovery of loss	(6,397)	(6,405)
Update of balances in favor in taxes		(2,699)	(519)
Other income	(4,282)	(5,791)	(6,270)
Other income	(13,861)	(24,760)	(17,223)
Other (income) and other expenses, net	$ 136,582	$ (15,052)	$ (6,934)

Financial Instruments (Schedule

Financial Instruments (Schedule of Book Value of Assets and liabilities Denominated in Foreign Currency) (Details) $ in Thousands, $ in Thousands	Dec. 31, 2019USD ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018USD ($)	Dec. 31, 2018MXN ($)
Disclosure of nature and extent of risks arising from financial instruments [line items]
Short - term assets		$ 22,410,136		$ 26,100,965
Short - term liabilities		7,286,477		8,992,168
Currency risk [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Short - term assets		11,176,625		11,649,108
Short - term liabilities		4,843,976		5,567,083
Net monetary asset position in foreign currency		$ 6,332,649		$ 6,082,025
Currency risk [Member] | USD [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Net monetary asset position in foreign currency	$ 335,545		$ 309,414

Financial Instruments (Schedu_2

Financial Instruments (Schedule of Additional Bank Lines of Credit) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Bank loans credit lines:
Drawn balances	$ 350,000	$ 350,000
Undrawn balances	116,596	128,681
Available line balance	$ 233,404	$ 221,319

Financial information by segm_3

Financial information by segments (Narrative) (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Canada [Member]
Disclosure of geographical areas [line items]
Percentage of sales	0.00%	3.00%

Financial information by segm_4

Financial information by segments (Schedule of Information by Region) (Details) - MXN ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of operating segments [line items]
Net sales		$ 34,171,201	$ 35,678,253	$ 28,700,450
Cost of sales		30,067,141	30,563,315	23,994,526
Gross profit		4,104,060	5,114,938	4,705,924
Administrative expenses		1,637,425	1,080,012	(1,238,943)
Other income (expenses), net		(136,582)	15,052	6,934
Interest income		145,995	312,821	252,291
Interest expense		(55,049)	(16,511)	(54,404)
Exchange rate gain (loss), net		(784,583)	(146,896)	(654,362)
Income (loss) before income taxes		1,636,416	4,199,392	3,017,440
Income taxes	[1]	3,276,274	752,462	1,122,809
Net income (loss) for the year		(1,639,858)	3,446,930	1,894,631
Depreciation and amortization		1,108,629	1,112,418	1,465,759
Total assets		44,014,759	48,853,823	45,976,532
Total liabilities		11,404,982	13,344,820	11,658,995
Acquisitions of property, plant and equipment		1,271,420	1,994,465	3,039,501
Mexico [Member]
Disclosure of operating segments [line items]
Net sales		18,530,672	20,507,794	17,125,369
Cost of sales		14,934,575	15,715,761	13,340,648
Gross profit		3,596,097	4,792,033	3,784,721
Administrative expenses		848,495	592,218	(753,676)
Other income (expenses), net		175,412	11,367	(98,915)
Interest income		145,729	307,279	252,074
Interest expense		3,438	52,226	(7,459)
Exchange rate gain (loss), net		628,044	445,289	(1,291,909)
Income (loss) before income taxes		2,093,313	5,015,976	1,884,836
Income taxes		3,505,015	905,482	786,902
Net income (loss) for the year		(1,411,702)	4,110,494	1,097,934
Depreciation and amortization		577,048	587,407	677,665
Total assets		34,761,662	40,617,874	32,878,144
Total liabilities		9,079,632	8,458,465	1,134,438
Acquisitions of property, plant and equipment		785,818	1,552,587	2,394,541
USA [Member]
Disclosure of operating segments [line items]
Net sales		7,120,360	9,246,444	8,370,999
Cost of sales		7,752,776	9,294,352	7,814,180
Gross profit		(632,416)	(47,908)	556,819
Administrative expenses		267,756	267,905	(257,001)
Other income (expenses), net		(71,324)	3,685	105,849
Interest income		266	5,542	217
Interest expense		(84,621)	(99,985)	(50,962)
Exchange rate gain (loss), net		(2,745)	7,522	(26,256)
Income (loss) before income taxes		(910,458)	(399,049)	328,666
Income taxes		(236,598)	7,145	322,444
Net income (loss) for the year		(673,860)	(406,194)	6,222
Depreciation and amortization		260,760	268,635	538,699
Total assets		8,419,771	10,181,967	10,548,895
Total liabilities		4,219,817	10,815,692	10,760,999
Acquisitions of property, plant and equipment		278,467	433,154	622,785
Brazil [Member]
Disclosure of operating segments [line items]
Net sales		8,520,169	5,924,015	3,204,082
Cost of sales		7,379,790	5,553,202	2,839,698
Gross profit		1,140,379	370,813	364,384
Administrative expenses		521,174	219,889	(228,266)
Other income (expenses), net		32,494
Interest income		0
Interest expense		(110,919)	(103,141)	(65,186)
Exchange rate gain (loss), net		177,314	(602,747)	1,861
Income (loss) before income taxes		298,478	(554,964)	72,793
Income taxes		7,857	(160,165)	13,463
Net income (loss) for the year		290,621	(394,799)	59,330
Depreciation and amortization		270,821	256,376	249,395
Total assets		6,002,701	6,733,362	5,356,860
Total liabilities		3,274,908	2,750,043	2,570,925
Acquisitions of property, plant and equipment		207,135	8,724	22,175
Eliminations Between Segments [Member]
Disclosure of operating segments [line items]
Interest expense		137,053	134,389	69,203
Exchange rate gain (loss), net		(18,030)	3,040	661,942
Income (loss) before income taxes		155,083	137,429	731,145
Net income (loss) for the year		155,083	137,429	731,145
Total assets		(3,343,456)	(8,679,380)	(2,807,367)
Total liabilities		$ (3,343,456)	$ (8,679,380)	$ (2,807,367)
[1]	For the purpose of determining the effective tax rate, the payments corresponding to taxes from previous years and expenses that were paid by various group companies derived from repair agreements during the 2019 fiscal year were not considered within the income tax expense.

Financial information by segm_5

Financial information by segments (Schedule of Information on Products) (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of products and services [line items]
Revenue	$ 34,171,201	$ 35,678,253	$ 28,700,450
Light structural [Member]
Disclosure of products and services [line items]
Revenue	1,396,632	1,654,720	1,557,567
Structural [Member]
Disclosure of products and services [line items]
Revenue	3,304,178	2,441,079	2,232,979
Bars [Member]
Disclosure of products and services [line items]
Revenue	2,220,264	1,575,291	1,065,731
Rebar [Member]
Disclosure of products and services [line items]
Revenue	12,370,490	12,363,530	8,931,862
Flat rebar [Member]
Disclosure of products and services [line items]
Revenue	1,833,576	2,271,347	1,552,578
Hot rolled bars [Member]
Disclosure of products and services [line items]
Revenue	8,226,613	9,549,286	8,594,130
Cold drawn bars [Member]
Disclosure of products and services [line items]
Revenue	3,102,544	3,779,385	3,370,150
Others [Member]
Disclosure of products and services [line items]
Revenue	$ 1,716,904	$ 2,043,615	$ 1,395,453

Financial information by segm_6

Financial information by segments (Schedule of Information About Geographical Areas) (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of geographical areas [line items]
Revenue	$ 34,171,201	$ 35,678,253	$ 28,700,450
Mexico [Member]
Disclosure of geographical areas [line items]
Revenue	18,530,672	20,507,794	17,125,369
USA [Member]
Disclosure of geographical areas [line items]
Revenue	7,120,360	9,246,444	8,370,999
Brazil [Member]
Disclosure of geographical areas [line items]
Revenue	8,520,169	5,924,015	3,204,082
Canada [Member]
Disclosure of geographical areas [line items]
Revenue	175,686	267,606	370,803
Latin America [Member]
Disclosure of geographical areas [line items]
Revenue	60,672	60,578	30,173
Other (Europe and Asia) [Member]
Disclosure of geographical areas [line items]
Revenue	$ 16,540	$ 20,658	$ 39,224

Contingencies (Details)

Contingencies (Details) $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018USD ($)	Dec. 31, 2018MXN ($)	Dec. 31, 2019MXN ($)	Jan. 29, 2019USD ($)	Dec. 31, 2018MXN ($)	Nov. 06, 2017USD ($)	Sep. 05, 2017USD ($)	Dec. 31, 2004USD ($)	Jul. 26, 2004USD ($)
Disclosure of contingent liabilities in business combination [line items]
Accounts payable					$ 4,179,830		$ 4,390,413
Amount of lawsuit				$ 5,880
Amount of tax payments and expenses increase (decrease)		$ 2,323,700
USD [Member]
Disclosure of contingent liabilities in business combination [line items]
Environmental liabilities	$ 2,600		$ 2,600
Accounts payable	1,000		1,000
Accumulated liabilities	$ 1,600		$ 1,600
Amount of claims the payments									$ 1,400
Amount of add up								$ 5,000
Non-adjusting events after reporting period [member] | USD [Member]
Disclosure of contingent liabilities in business combination [line items]
Amount of penalty paid						$ 200
Pacific Steel [Member] | USD [Member]
Disclosure of contingent liabilities in business combination [line items]
Contingent amount to pay										$ 138	$ 200

Commitments (Details)

Commitments (Details) $ in Thousands, $ in Thousands	1 Months Ended		12 Months Ended
	Jan. 31, 2018USD ($)	Jan. 31, 2013	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2019MXN ($)	Feb. 22, 2018USD ($)	Dec. 31, 2012MXN ($)
Disclosure of contingent liabilities in business combination [line items]
Lease Expire dates			2020
EnerNOC [Member]
Disclosure of contingent liabilities in business combination [line items]
Term of agreement		5 years
ECOM LTDA [Member]
Disclosure of contingent liabilities in business combination [line items]
Termination period of agreement	February 2020
Primental Technologies [Member]
Disclosure of contingent liabilities in business combination [line items]
Termination period of agreement			16 months
Percentage of advance payment			20.00%
Estimated project cost						$ 23,200
USD [Member]
Disclosure of contingent liabilities in business combination [line items]
Rental expenses relating to operating leases			$ 100	$ 700	$ 500
Consideration of sales and used tax								$ 2,452,028
Interest on sales and used tax								$ 394,138
USD [Member] | EnerNOC [Member]
Disclosure of contingent liabilities in business combination [line items]
Annual consideration			1,800	$ 2,800	$ 1,000
USD [Member] | ECOM LTDA [Member]
Disclosure of contingent liabilities in business combination [line items]
Obligation under agreements	$ 6,300
USD [Member] | Primental Technologies [Member]
Disclosure of contingent liabilities in business combination [line items]
Obligation under agreements							$ 1,670
Amount exercised under agreement							$ 11,900
USD [Member] | Qualified Supply Service Scheme [Member]
Disclosure of contingent liabilities in business combination [line items]
Estimated project cost			$ 1,850

Subsequent Events (Details)

Subsequent Events (Details) - Event After Reporting Period [Member] - MXN ($) $ in Millions	Mar. 10, 2020	Jan. 16, 2020
Disclosure of non-adjusting events after reporting period [line items]
Preliminary tariff rate on products		6.75%
Dividend paid	$ 1,990