CEMEX, S.A.B. de C.V. (CX) 20-F 30 Apr 18 2017 FY Annual report (foreign) Financial data

Document and Entity Information

Document and Entity Information	12 Months Ended
	Dec. 31, 2017shares
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	CX
Entity Registrant Name	CEMEX SAB DE CV
Entity Central Index Key	1,076,378
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
CPO [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	15,085,567,391
Series A Shares [member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	30,214,469,912
Series B Shares [member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	15,107,234,956

Consolidated Income Statements

Consolidated Income Statements - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Profit or loss [abstract]
Net sales	$ 258,131	$ 249,945	$ 219,299
Cost of sales	(169,534)	(160,433)	(144,513)
Gross profit	88,597	89,512	74,786
Operating expenses	(56,026)	(53,969)	(47,910)
Operating earnings before other expenses, net	32,571	35,543	26,876
Other expenses, net	(3,815)	(1,670)	(3,032)
Operating earnings	28,756	33,873	23,844
Financial expense	(19,301)	(21,487)	(19,784)
Financial income and other items, net	3,616	4,489	(1,333)
Share of profit of equity accounted investees	588	688	737
Earnings before income tax	13,659	17,563	3,464
Income tax	(520)	(3,125)	(2,368)
Net income from continuing operations	13,139	14,438	1,096
Discontinued operations	3,499	768	1,028
CONSOLIDATED NET INCOME	16,638	15,206	2,124
Non-controlling interest net income	1,417	1,173	923
CONTROLLING INTEREST NET INCOME	$ 15,221	$ 14,033	$ 1,201
Basic earnings per share	$ 0.34	$ 0.32	$ 0.03
Basic earnings per share from continuing operations	0.26	0.30	0.01
Diluted earnings per share	0.34	0.32	0.03
Diluted earnings per share from continuing operations	$ 0.26	$ 0.30	$ 0.01

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CONSOLIDATED NET INCOME	$ 16,638	$ 15,206	$ 2,124
Items that will not be reclassified subsequently to the income statement
Net actuarial (losses) from remeasurements of defined benefit pension plans	3	(4,019)	(748)
Income tax recognized directly in other comprehensive income	(1)	788	183
Items that will not be reclassified subsequently to profit or loss	2	(3,231)	(565)
Items that are or may be reclassified subsequently to the income statement
Effects from available-for-sale investments and derivative financial instruments designated as cash flow hedges	275	36	335
Currency translation of foreign subsidiaries	(9,519)	11,630	7,976
Income tax recognized directly in other comprehensive income	233	(696)	453
Items that are or may be reclassified subsequently to profit or loss	(9,011)	10,970	8,764
Total items of other comprehensive income, net	(9,009)	7,739	8,199
TOTAL COMPREHENSIVE INCOME	7,629	22,945	10,323
Non-controlling interest comprehensive income	1,928	5,164	3,221
CONTROLLING INTEREST COMPREHENSIVE INCOME	5,701	17,781	7,102
Discontinued Operations [member]
Items that are or may be reclassified subsequently to the income statement
CONTROLLING INTEREST COMPREHENSIVE INCOME	2,342	2,882	1,387
Continuing Operations [member]
Items that are or may be reclassified subsequently to the income statement
CONTROLLING INTEREST COMPREHENSIVE INCOME	$ 3,359	$ 14,899	$ 5,715

Consolidated Statements of Fina

Consolidated Statements of Financial Position $ in Millions, $ in Millions	Dec. 31, 2017MXN ($)	Dec. 31, 2016MXN ($)
CURRENT ASSETS
Cash and cash equivalents	$ 13,741	$ 11,616
Trade accounts receivables, net	30,478	30,160
Other accounts receivable	4,970	5,238
Inventories, net	18,852	18,098
Assets held for sale	1,378	21,029
Other current assets	1,946	2,300
Total current assets	71,365	88,441
NON-CURRENT ASSETS
Equity accounted investees	8,572	10,488
Other investments and non-current accounts receivable	5,758	7,120
Property, machinery and equipment, net	232,160	230,134
Goodwill and intangible assets, net	234,909	247,507
Deferred income tax assets	14,817	16,038
Total non-current assets	496,216	511,287
TOTAL ASSETS	567,581	599,728
CURRENT LIABILITIES
Short-term debt	16,973	1,222
Other financial obligations	19,362	11,658
Trade payables	46,428	40,338
Income tax payable	5,129	5,441
Other current liabilities	24,287	22,530
Liabilities directly related to assets held for sale	0	815
Total current liabilities	112,179	82,004
NON-CURRENT LIABILITIES
Long-term debt	177,022	235,016
Other financial obligations	12,859	25,972
Employee benefits	23,653	23,365
Deferred income tax liabilities	15,801	19,600
Other non-current liabilities	15,649	17,046
Total non-current liabilities	244,984	320,999
TOTAL LIABILITIES	357,163	403,003
Controlling interest:
Common stock and additional paid-in capital	144,654	127,336
Other equity reserves	13,483	24,793
Retained earnings	6,181	1,612
Net income	15,221	14,033
Total controlling interest	179,539	167,774
Non-controlling interest and perpetual debentures	30,879	28,951
TOTAL STOCKHOLDERS' EQUITY	210,418	196,725
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 567,581	$ 599,728

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
OPERATING ACTIVITIES
CONSOLIDATED NET INCOME	$ 16,638	$ 15,206	$ 2,124
Discontinued operations	3,499	768	1,028
Net income from continuing operations	13,139	14,438	1,096
Non-cash items:
Depreciation and amortization of assets	15,992	15,991	14,658
Impairment losses	2,936	2,518	1,517
Share of profit of equity accounted investees	(588)	(688)	(737)
Results on sale of subsidiaries, other disposal groups and others	(4,335)	(2,132)	(174)
Financial income and other items, net	15,685	16,998	21,117
Income taxes	520	3,125	2,368
Changes in working capital, excluding income taxes	8,040	11,017	3,596
Net cash flow provided by operating activities from continuing operations before financial expense, coupons on perpetual debentures and income taxes	51,389	61,267	43,441
Financial expense and coupons on perpetual debentures paid	(15,759)	(18,129)	(17,865)
Income taxes paid	(4,664)	(5,183)	(7,437)
Net cash flow provided by operating activities from continuing operations	30,966	37,955	18,139
Net cash flow provided by operating activities from discontinued operations	144	1,192	977
Net cash flows provided by operating activities	31,110	39,147	19,116
INVESTING ACTIVITIES
Property, machinery and equipment, net	(10,753)	(4,563)	(8,930)
Acquisition and disposal of subsidiaries and other disposal groups, net	23,841	1,424	2,722
Intangible assets and other deferred charges	(1,607)	(1,427)	(908)
Long term assets and others, net	128	(914)	(764)
Net cash flows used in investing activities from continuing operations	11,609	(5,480)	(7,880)
Net cash flows provided by (used in) investing activities from discontinued operations	0	1	(153)
Net cash flows used in investing activities	11,609	(5,479)	(8,033)
FINANCING ACTIVITIES
Sale of non-controlling interests in subsidiaries	(55)	9,777	0
Derivative instruments	246	399	1,098
Repayment of debt, net	(39,299)	(46,823)	(11,473)
Other financial obligations, net	0	0	177
Securitization of trade receivables	169	(999)	(506)
Non-current liabilities, net	(3,745)	(1,972)	(1,763)
Net cash flows used in financing activities	(42,684)	(39,618)	(12,467)
Decrease in cash and cash equivalents from continuing operations	(109)	(7,143)	(2,208)
Increase in cash and cash equivalents from discontinued operations	144	1,193	824
Cash conversion effect, net	2,090	2,244	4,117
Cash and cash equivalents at beginning of period	11,616	15,322	12,589
CASH AND CASH EQUIVALENTS AT END OF PERIOD	13,741	11,616	15,322
Changes in working capital, excluding income taxes:
Trade receivables, net	1,495	(4,386)	(3,561)
Other accounts receivable and other assets	1,120	(286)	(1,986)
Inventories	526	(1,239)	(1,472)
Trade payables	3,635	13,729	7,532
Other accounts payable and accrued expenses	1,264	3,199	3,083
Changes in working capital, excluding income taxes	$ 8,040	$ 11,017	$ 3,596

Statements of Changes in Stockh

Statements of Changes in Stockholders' Equity - MXN ($) $ in Millions	Total	Common stock [member]	Additional paid-in capital [member]	Other equity reserves [member]	Retained earnings [member]	Total controlling interest [Member]	Non-controlling interests and perpetual debentures [member]
Equity at beginning of period at Dec. 31, 2014	$ 148,171	$ 4,151	$ 101,216	$ 10,738	$ 14,998	$ 131,103	$ 17,068
Net income	2,124	0	0	0	1,201	1,201	923
Total other items of comprehensive income, net	8,199	0	0	5,901	0	5,901	2,298
Effects of early conversion and issuance of convertible subordinated notes	5,051	3	5,982	(934)	0	5,051	0
Capitalization of retained earnings	0	4	7,613	0	(7,617)	0	0
Share-based compensation	655	0	655	0	0	655	0
Effects of perpetual debentures	(432)	0	0	(432)	0	(432)	0
Equity at end of period at Dec. 31, 2015	163,768	4,158	115,466	15,273	8,582	143,479	20,289
Net income	15,206	0	0	0	14,033	14,033	1,173
Total other items of comprehensive income, net	7,739	0	0	3,748	0	3,748	3,991
Capitalization of retained earnings	0	4	6,966	0	(6,970)	0	0
Share-based compensation	742	0	742	0	0	742	0
Effects of perpetual debentures	(507)	0	0	(507)	0	(507)	0
Changes in non-controlling interest	9,777	0	0	6,279	0	6,279	3,498
Equity at end of period at Dec. 31, 2016	196,725	4,162	123,174	24,793	15,645	167,774	28,951
Net income	16,638	0	0	0	15,221	15,221	1,417
Total other items of comprehensive income, net	(9,009)	0	0	(9,520)	0	(9,520)	511
Effects of early conversion and issuance of convertible subordinated notes	5,729	4	7,059	(1,334)	0	5,729	0
Capitalization of retained earnings	0	5	9,459	0	(9,464)	0	0
Share-based compensation	817	0	791	26	0	817	0
Effects of perpetual debentures	(482)	0	0	(482)	0	(482)	0
Equity at end of period at Dec. 31, 2017	$ 210,418	$ 4,171	$ 140,483	$ 13,483	$ 21,402	$ 179,539	$ 30,879

Description of Business

Description of Business	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Description of Business	1) DESCRIPTION OF BUSINESS CEMEX, S.A.B. de C.V., founded in 1906, is a public stock corporation with variable capital (S.A.B. de C.V.) organized under the laws of the United Mexican States, or Mexico, holding company (parent) of entities whose main activities are oriented to the construction industry, through the production, marketing, distribution and sale of cement, ready-mix ready-mix The shares of CEMEX, S.A.B. de C.V. are listed on the Mexican Stock Exchange (“MSE”) as Ordinary Participation Certificates (“CPOs”) under the symbol “CEMEXCPO”. Each CPO represents two series “A” shares and one series “B” share of common stock of CEMEX, S.A.B. de C.V. In addition, CEMEX, S.A.B. de C.V.’s shares are listed on the New York Stock Exchange (“NYSE”) as American Depositary Shares The terms “CEMEX, S.A.B. de C.V.” and/or the “Parent Company” used in these accompanying notes to the financial statements refer to CEMEX, S.A.B. de C.V. without its consolidated subsidiaries. The terms the “Company” or “CEMEX” refer to CEMEX, S.A.B. de C.V. together with its consolidated subsidiaries. The issuance of these consolidated financial statements was authorized by the Board of Directors of CEMEX, S.A.B. de C.V. on February 1, 2018. These financial statements were authorized by the Annual General Ordinary Shareholders’ Meeting of CEMEX, S.A.B. de C.V. on April 5, 2018.

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Significant Accounting Policies	2) SIGNIFICANT ACCOUNTING POLICIES 2.1) BASIS OF PRESENTATION AND DISCLOSURE The consolidated financial statements as of December 31, 2017 and 2016 and for the years ended December 31, 2017, 2016 and 2015, were prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”). Presentation currency and definition of terms The presentation currency of the consolidated financial statements is the Mexican peso, currency in which the Company reports periodically to the MSE. When reference is made to pesos or “Ps” it means Mexican pesos. The amounts in the financial statements and the accompanying notes are stated in millions, except when references are made to earnings per share and/or prices per share. When reference is made to “US$” or “dollars”, it means dollars of the United States of America (“United States”). When reference is made to “€” or “euros,” it means the currency in circulation in a significant number of European Union (“EU”) countries. When reference is made to “£” or “pounds”, it means British pounds sterling. When it is deemed relevant, certain amounts in foreign currency presented in the notes to the financial statements include between parentheses a convenience translation into dollars and/or into pesos, as applicable. Previously reported convenience translations of prior years are not restated unless the transaction is still outstanding, in which case those are restated using the closing exchange rates as of the reporting date. These translations should not be construed as representations that the amounts in pesos or dollars, as applicable, actually represent those peso or dollar amounts or could be converted into pesos or dollars at the rate indicated. As of December 31, 2017 and 2016, translations of pesos into dollars and dollars into pesos, were determined for statement of financial position amounts using the closing exchange rates of Ps19.65 and Ps20.72 pesos per dollar, respectively, and for statements of operations amounts, using the average exchange rates of Ps18.88, Ps18.72 and Ps15.98 pesos per dollar for 2017, 2016 and 2015, respectively. When the amounts between parentheses are the peso and the dollar, the amounts were determined by translating the euro amount into dollars using the closing exchange rates at year-end Amounts disclosed in the notes in connection with tax or legal proceedings (notes 19.4 and 24), which are originated in jurisdictions which currencies are different to the peso or the dollar, are presented in dollar equivalents as of the closing of the most recent year presented. Consequently, without any change in the original currency, such dollar amounts will fluctuate over time due to changes in exchange rates. Discontinued operations On April 5, 2017, in connection with the agreements entered into between CEMEX and Duna-Dráva Duna-Dráva line-by-line re-presented ready-mix In addition, considering the disposal of entire reportable operating segments, CEMEX presents in the single line item of discontinued operations, the results of: a) its Pacific Northwest Materials Business operations in the United States sold on June 30, 2017; b) its Concrete Pipe Business operations in the United States sold on January 31, 2017; c) its operations in Bangladesh and Thailand sold on May 26, 2016; and d) its operations in Austria and Hungary sold on October 31, 2015 (note 4.2). Discontinued operations are presented net of income tax. Income statements CEMEX includes the line item titled “Operating earnings before other expenses, net” considering that it is a relevant measure for CEMEX’s management as explained in note 4.4. Under IFRS, the inclusion of certain subtotals such as “Operating earnings before other expenses, net” and the display of the statement of operations vary significantly by industry and company according to specific needs. The line item “Other expenses, net” consists primarily of revenues and expenses not directly related to CEMEX’s main activities, or which are of an unusual and/or non-recurring Statements of cash flows The statements of cash flows exclude the following transactions that did not represent sources or uses of cash: • In 2017, 2016 and 2015, the increases in common stock and additional paid-in • In 2017, 2016 and 2015, the increases in property, plant and equipment for Ps2,096, Ps7 and Ps63, respectively, associated with the finance leases during the year (note 14); • In 2017, the decrease in debt for Ps5,468, the net decrease in other equity reserves for Ps1,334, the increase in common stock for Ps4 and the increase in additional paid-in paid-in • In 2016, the increase in debt and in other current accounts receivable for Ps148, in connection with a guarantee signed by CEMEX Colombia, S.A. (“CEMEX Colombia”) over the debt of a trust committed to the development of housing projects in Colombia and the related beneficial interest that in turn holds CEMEX Colombia in the assets of such trust, which are comprised by land; and • In 2015, the decrease in other current and non-current 2.2) PRINCIPLES OF CONSOLIDATION The consolidated financial statements include those of CEMEX, S.A.B. de C.V. and those of the entities in which the Parent Company exercises control, including structured entities (special purposes entities), by means of which the Parent Company is exposed, or has rights, to variable returns from its involvement with the investee, and has the ability to affect those returns through its power over the investee’s relevant activities. Balances and operations between related parties are eliminated in consolidation. Investments are accounted for by the equity method when CEMEX has significant influence which is generally presumed with a minimum equity interest of 20%. The equity method reflects in the financial statements, the investee’s original cost and CEMEX’s share of the investee’s equity and earnings after acquisition. The financial statements of joint ventures, which relate to those arrangements in which CEMEX and other third-party investors have joint control and have rights to the net assets of the arrangements, are recognized under the equity method. During the reported periods, CEMEX did not have joint operations, referring to those cases in which the parties that have joint control of the arrangement have rights over specific assets and obligations for specific liabilities relating to the arrangements. The equity method is discontinued when the carrying amount of the investment, including any long-term interest in the investee or joint venture, is reduced to zero, unless CEMEX has incurred or guaranteed additional obligations of the investee or joint venture. Other permanent investments where CEMEX holds equity interests of less than 20% and/or there is no significant influence are carried at their historical cost. 2.3) USE OF ESTIMATES AND CRITICAL ASSUMPTIONS The preparation of financial statements in accordance with IFRS requires management to make estimates and assumptions that affect reported amounts of assets and liabilities, and the disclosure of contingent assets and liabilities at the date of the financial statements; as well as the reported amounts of revenues and expenses during the period. These assumptions are reviewed on an ongoing basis using available information. Actual results could differ from these estimates. The items subject to significant estimates and assumptions by management include impairment tests of long-lived assets, recognition of deferred income tax assets, as well as the measurement of financial instruments at fair value, and the assets and liabilities related to employee benefits. Significant judgment is required by management to appropriately assess the amounts of these concepts. 2.4) FOREIGN CURRENCY TRANSACTIONS AND TRANSLATION OF FOREIGN CURRENCY FINANCIAL STATEMENTS Transactions denominated in foreign currencies are recorded in the functional currency at the exchange rates prevailing on the dates of their execution. Monetary assets and liabilities denominated in foreign currencies are translated into the functional currency at the exchange rates prevailing at the statement of financial position date, and the resulting foreign exchange fluctuations are recognized in earnings, except for exchange fluctuations arising from: 1) foreign currency indebtedness associated with the acquisition of foreign entities; and 2) fluctuations associated with related parties’ balances denominated in foreign currency, which settlement is neither planned nor likely to occur in the foreseeable future and as a result, such balances are of a permanent investment nature. These fluctuations are recorded against “Other equity reserves”, as part of the foreign currency translation adjustment (note 20.2) until the disposal of the foreign net investment, at which time, the accumulated amount is recycled through the statement of operations as part of the gain or loss on disposal. The financial statements of foreign subsidiaries, as determined using their respective functional currency, are translated to pesos at the closing exchange rate for statement of financial position accounts and at the closing exchange rates of each month within the period for statements of operations accounts. The functional currency is that in which each consolidated entity primarily generates and expends cash. The corresponding translation effect is included within “Other equity reserves” and is presented in the statement of other comprehensive income for the period as part of the foreign currency translation adjustment (note 20.2) until the disposal of the net investment in the foreign subsidiary. Considering its integrated activities, for purposes of functional currency, the Parent Company is considered to have two divisions, one related with its financial and holding company activities, in which the functional currency is the dollar for all assets, liabilities and transactions associated with these activities, and another division related with the Parent Company’s operating activities in Mexico, in which the functional currency is the peso for all assets, liabilities and transactions associated with these activities. During the reported periods, there were no subsidiaries whose functional currency was the currency of a hyperinflationary economy, which is generally considered to exist when the cumulative inflation rate over the last three years is approaching, or exceeds, 100%. In a hyperinflationary economy, the accounts of the subsidiary’s statements of operations should be restated to constant amounts as of the reporting date, in which case, both the statement of financial position accounts and the income statement accounts would be translated to pesos at the closing exchange rates of the year. The most significant closing exchange rates and the approximate average exchange rates for statement of financial position accounts and statement of operations accounts as of December 31, 2017, 2016 and 2015, were as follows: 2017 2016 2015 Currency Closing Average Closing Average Closing Average Dollar 19.6500 18.8800 20.7200 18.7200 17.2300 15.9800 Euro 23.5866 21.4122 21.7945 20.6564 18.7181 17.6041 British Pound Sterling 26.5361 24.4977 25.5361 25.0731 25.4130 24.3638 Colombian Peso 0.0066 0.0064 0.0069 0.0062 0.0055 0.0058 Egyptian Pound 1.1082 1.0620 1.1234 1.8261 2.2036 2.0670 Philippine Peso 0.3936 0.3747 0.4167 0.3927 0.3661 0.3504 The financial statements of foreign subsidiaries are initially translated from their functional currencies into dollars and subsequently into pesos. Therefore, the foreign exchange rates presented in the table above between the functional currency and the peso represent the implied exchange rates resulting from this methodology. The peso to U.S. dollar exchange rate used by CEMEX is an average of free market rates available to settle its foreign currency transactions. No significant differences exist, in any case, between the foreign exchange rates used by CEMEX and those exchange rates published by the Mexican Central Bank. 2.5) CASH AND CASH EQUIVALENTS (note 8) The balance in this caption is comprised of available amounts of cash and cash equivalents, mainly represented by highly-liquid short-term investments, which are readily convertible into known amounts of cash, and which are not subject to significant risks of changes in their values, including overnight investments, which yield fixed returns and have maturities of less than three months from the investment date. These fixed-income investments are recorded at cost plus accrued interest. Accrued interest is included in the income statement as part of “Financial income and other items, net.” The amount of cash and cash equivalents in the statement of financial position includes restricted cash and investments, comprised of deposits in margin accounts that guarantee certain of CEMEX’s obligations, to the extent that the restriction will be lifted in less than three months from the statement of financial position reporting date. When the restriction period is greater than three months, such restricted cash and investments are not considered cash equivalents and are included within short-term or long-term “Other accounts receivable,” as appropriate. When contracts contain provisions for net settlement, these restricted amounts of cash and cash equivalents are offset against the liabilities that CEMEX has with its counterparties. 2.6) FINANCIAL INSTRUMENTS Beginning January 1, 2018, IFRS 9, Financial Instruments: classification and measurement Trade accounts receivable and other accounts receivable (notes 9 and 10) Instruments under these captions are classified as loans and receivables and are recorded at their amortized cost representing the net present value (“NPV”) of the consideration receivable or payable as of the transaction date. Due to their short-term nature, CEMEX initially recognizes these receivables at the original invoiced amount less an estimate of doubtful accounts. Allowances for doubtful accounts were recognized based on incurred loss estimates against administrative and selling expenses. Trade receivables sold under securitization programs, in which certain residual interest in the trade receivables sold in case of recovery failure and continued involvement in such assets is maintained, do not qualify for derecognition and are maintained on the statement of financial position. Other investments and non-current As part also of loans and receivables, non-current Investments in financial instruments held for trading, as well as those investments available for sale, are recognized at their estimated fair value, in the first case through the income statement as part of “Financial income and other items, net,” and in the second case, changes in valuation are recognized as part of “Other comprehensive income” for the period within “Other equity reserves” until their time of disposition, when all valuation effects accrued in equity are reclassified to “Financial income and other items, net,” in the income statement. These investments are tested for impairment upon the occurrence of a significant adverse change or at least once a year during the last quarter. Debt and other financial obligations (notes 16.1 and 16.2) Bank loans and notes payable are recognized at their amortized cost. Interest accrued on financial instruments is recognized within “Other accounts payable and accrued expenses” against financial expense. During the reported periods, CEMEX did not have financial liabilities voluntarily recognized at fair value or associated to fair value hedge strategies with derivative financial instruments. Direct costs incurred in debt issuances or borrowings, as well as debt refinancing or non-substantial Finance leases are recognized as financing liabilities against a corresponding fixed asset for the lesser of the market value of the leased asset and the NPV of future minimum lease payments, using the contract’s implicit interest rate to the extent available, or the incremental borrowing cost. The main factors that determine a finance lease are: a) ownership title of the asset is transferred to CEMEX at the expiration of the contract; b) CEMEX has a bargain purchase option to acquire the asset at the end of the lease term; c) the lease term covers the majority of the useful life of the asset; and/or d) the NPV of minimum payments represents substantially all the fair value of the related asset at the beginning of the lease. Financial instruments with components of both liabilities and equity (note 16.2) The financial instrument that contains components of both liability and equity, such as notes convertible into a fixed number of the issuer’s shares and denominated its same functional currency, each component is recognized separately in the statement of financial position according to the specific characteristics of each transaction. In the case of instruments mandatorily convertible into shares of the issuer, the liability component represents the NPV of interest payments on the principal amount using a market interest rate, without assuming early conversion, and is recognized within “Other financial obligations,” whereas the equity component represents the difference between the principal amount and the liability component, and is recognized within “Other equity reserves”, net of commissions. In the case of instruments that are optionally convertible into a fixed number of shares, the liability component represents the difference between the principal amount and the fair value of the conversion option premium, which reflects the equity component (note 2.14). When the transaction is denominated in a currency different than the functional currency of the issuer, the conversion option is accounted for as a derivative financial instrument at fair value in the income statement. Derivative financial instruments (note 16.4) CEMEX recognizes all derivative instruments as assets or liabilities in the statement of financial position at their estimated fair values, and the changes in such fair values are recognized in the income statement within “Financial income and other items, net” for the period in which they occur, except for the effective portion of changes in fair value of derivative instruments associated with cash flow hedges, in which case, such changes in fair value are recognized in stockholders’ equity, and are reclassified to earnings as the interest expense of the related debt is accrued, in the case of interest rate swaps, or when the underlying products are consumed in the case of contracts on the price of raw materials and commodities. Likewise, in hedges of the net investment in foreign subsidiaries, changes in fair value are recognized in stockholders’ equity as part of the foreign currency translation result (note 2.4), which reversal to earnings would take place upon disposal of the foreign investment. During the reported periods, CEMEX did not have derivatives designated as fair value hedges. Derivative instruments are negotiated with institutions with significant financial capacity; therefore, CEMEX believes the risk of non-performance CEMEX reviews its contracts to identify the existence of embedded derivatives. Identified embedded derivatives are analyzed to determine if they need to be separated from the host contract and recognized in the statement of financial position as assets or liabilities, applying the same valuation rules used for other derivative instruments. Put options granted for the purchase of non-controlling Represent agreements by means of which a non-controlling In respect of a put option granted for the purchase of an associate, CEMEX would recognize a liability against a loss in the statements of operations whenever the estimated purchase price exceeds the fair value of the net assets to be acquired by CEMEX, had the counterparty exercised its right to sell. As of December 31, 2017 and 2016, there were no written put options. Fair value measurements (note 16.3) Under IFRS, fair value represents an “Exit Value” which is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date, considering the counterparty’s credit risk in the valuation. The concept of Exit Value is premised on the existence of a market and market participants for the specific asset or liability. When there is no market and/or market participants willing to make a market, IFRS establishes a fair value hierarchy that gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to measurements involving significant unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are as follows: • Level 1.— represent quoted prices (unadjusted) in active markets for identical assets or liabilities that CEMEX has the ability to access at the measurement date. A quote price in an active market provides the most reliable evidence of fair value and is used without adjustment to measure fair value whenever available. • Level 2.— are inputs other than quoted prices in active markets that are observable for the asset or liability, either directly or indirectly, and are used mainly to determine the fair value of securities, investments or loans that are not actively traded. Level 2 inputs included equity prices, certain interest rates and yield curves, implied volatility and credit spreads, among others, as well as inputs extrapolated from other observable inputs. In the absence of Level 1 inputs, CEMEX determined fair values by iteration of the applicable Level 2 inputs, the number of securities and/or the other relevant terms of the contract, as applicable. • Level 3.— inputs are unobservable inputs for the asset or liability. CEMEX used unobservable inputs to determine fair values, to the extent there are no Level 1 or Level 2 inputs, in valuation models such as Black-Scholes, binomial, discounted cash flows or multiples of Operative EBITDA, including risk assumptions consistent with what market participants would use to arrive at fair value. 2.7) INVENTORIES (note 11) Inventories are valued using the lower of cost or net realizable value. The cost of inventories includes expenditures incurred in acquiring the inventories, production or conversion costs and other costs incurred in bringing them to their existing location and condition. CEMEX analyzes its inventory balances to determine if, as a result of internal events, such as physical damage, or external events, such as technological changes or market conditions, certain portions of such balances have become obsolete or impaired. When an impairment situation arises, the inventory balance is adjusted to its net realizable value, whereas, if an obsolescence situation occurs, the inventory obsolescence reserve is increased. In both cases, these adjustments are recognized against the results of the period. Advances to suppliers of inventory are presented as part of other current assets. 2.8) PROPERTY, MACHINERY AND EQUIPMENT (note 14) Property, machinery and equipment are recognized at their acquisition or construction cost, as applicable, less accumulated depreciation and accumulated impairment losses. Depreciation of fixed assets is recognized as part of cost and operating expenses (note 5), and is calculated using the straight-line method over the estimated useful lives of the assets, except for mineral reserves, which are depleted using the units-of-production Years Administrative buildings 35 Industrial buildings 30 Machinery and equipment in plant 17 Ready-mix 9 Office equipment and other assets 6 CEMEX capitalizes, as part of the related cost of fixed assets, interest expense from existing debt during the construction or installation period of significant fixed assets, considering CEMEX’s corporate average interest rate and the average balance of investments in process for the period. All waste removal costs or stripping costs incurred in the operative phase of a surface mine in order to access the mineral reserves are recognized as part of the carrying amount of the related quarries. The capitalized amounts are further amortized over the expected useful life of exposed ore body based on the units of production method. Costs incurred in respect of operating fixed assets that result in future economic benefits, such as an extension in their useful lives, an increase in their production capacity or in safety, as well as those costs incurred to mitigate or prevent environmental damage, are capitalized as part of the carrying amount of the related assets. The capitalized costs are depreciated over the remaining useful lives of such fixed assets. Periodic maintenance on fixed assets is expensed as incurred. Advances to suppliers of fixed assets are presented as part of other long-term accounts receivable. The useful lives and residual values of property, machinery and equipment are reviewed at each reporting date and adjusted if appropriate. 2.9) BUSINESS COMBINATIONS, GOODWILL AND OTHER INTANGIBLE ASSETS (notes 4.1 and 15) Business combinations are recognized using the acquisition method, by allocating the consideration transferred to assume control of the entity to all assets acquired and liabilities assumed, based on their estimated fair values as of the acquisition date. Intangible assets acquired are identified and recognized at fair value. Any unallocated portion of the purchase price represents goodwill, which is not amortized and is subject to periodic impairment tests (note 2.10). Goodwill may be adjusted for any correction to the preliminary assessment given to the assets acquired and/or liabilities assumed within the twelve-month period after purchase. Costs associated with the acquisition are expensed in the income statement as incurred. CEMEX capitalizes intangible assets acquired, as well as costs incurred in the development of intangible assets, when future economic benefits associated are identified and there is evidence of control over such benefits. Intangible assets are recognized at their acquisition or development cost, as applicable. Indefinite life intangible assets are not amortized since the period in which the benefits associated with such intangibles will terminate cannot be accurately established. Definite life intangible assets are amortized on straight-line basis as part of operating costs and expenses (note 5). Startup costs are recognized in the income statement as they are incurred. Costs associated with research and development activities (“R&D activities”), performed by CEMEX to create products and services, as well as to develop processes, equipment and methods to optimize operational efficiency and reduce costs are recognized in the operating results as incurred. Direct costs incurred in the development stage of computer software for internal use are capitalized and amortized through the operating results over the useful life of the software, which on average is approximately 5 years. Costs incurred in exploration activities such as payments for rights to explore, topographical and geological studies, as well as trenching, among other items incurred to assess the technical and commercial feasibility of extracting a mineral resource, which are not significant to CEMEX, are capitalized when future economic benefits associated with such activities are identified. When extraction begins, these costs are amortized during the useful life of the quarry based on the estimated tons of material to be extracted. When future economic benefits are not achieved, any capitalized costs are subject to impairment. CEMEX’s extraction rights have maximum useful lives that range from 30 to 100 years, depending on the sector and the expected life of the related reserves. As of December 31, 2017, except for extraction rights and/or as otherwise indicated, CEMEX’s intangible assets are amortized on a straight line basis over their useful lives that range on average from 3 to 20 years. 2.10) IMPAIRMENT OF LONG LIVED ASSETS (notes 14 and 15) Property, machinery and equipment, intangible assets of definite life and other investments These assets are tested for impairment upon the occurrence of factors such as the occurrence of a significant adverse event, changes in CEMEX’s operating environment or in technology, as well as expectations of lower operating results, in order to determine whether their carrying amounts may not be recovered. An impairment loss is recorded in the income statement for the period within “Other expenses, net,” for the excess of the asset’s carrying amount over its recoverable amount, corresponding to the higher of the fair value less costs to sell the asset, and the asset’s value in use, the latter represented by the NPV of estimated cash flows related to the use and eventual disposal of the asset. The main assumptions utilized to develop estimates of NPV are a discount rate that reflects the risk of the cash flows associated with the assets and the estimations of generation of future income. Those assumptions are evaluated for reasonableness by comparing such discount rates to available market information and by comparing to third-party expectations of industry growth, such as governmental agencies or industry chambers. When impairment indicators exist, for each intangible asset, CEMEX determines its projected revenue streams over the estimated useful life of the asset. In order to obtain discounted cash flows attributable to each intangible asset, such revenues are adjusted for operating expenses, changes in working capital and other expenditures, as applicable, and discounted to NPV using the risk adjusted discount rate of return. The most significant economic assumptions are: a) the useful life of the asset; b) the risk adjusted discount rate of return; c) royalty rates; and d) growth rates. Assumptions used for these cash flows are consistent with internal forecasts and industry practices. The fair values of these assets are very sensitive to changes in such significant assumptions. Certain key assumptions are more subjective than others. In respect of trademarks, CEMEX considers that the most subjective key assumption is the royalty rate. In respect of extraction rights and customer relationships, the most subjective assumptions are revenue growth rates and estimated useful lives. CEMEX validates its assumptions through benchmarking with industry practices and the corroboration of third party valuation advisors. Significant judgment by management is required to appropriately assess the fair values and values in use of the related assets, as well as to determine the appropriate valuation method and select the significant economic assumptions. Impairment of long lived assets — Goodwill Goodwill is tested for impairment when required due to significant adverse changes or at least once a year, during the last quarter of such year. CEMEX determines the recoverable amount of the group of cash-generating units (“CGUs”) to which goodwill balances were allocated, which consists of the higher of such group of CGUs fair value less cost to sell and its value in use, the latter represented by the NPV of estimated future cash flows to be generated by such CGUs to which goodwill was allocated, which are generally determined over periods of 5 years. However, in specific circumstances, when CEMEX considers that actual results for a CGU do not fairly reflect historical performance and most external economic variables provide confidence that a reasonably determinable improvement in the mid-term The geographic operating segments reported by CEMEX (note 4.4), represent CEMEX’s groups of CGUs to which goodwill has been allocated for purposes of testing goodwill for impairment, considering: a) that after the acquisition, goodwill was allocated at the level of the geographic operating segment; b) that the operating components that comprise the reported segment have similar economic characteristics; c) that the reported segments are used by CEMEX to organize and evaluate its activities in its internal information system; d) the homogeneous nature of the items produced and traded in each operative component, which are all used by the construction industry; e) the vertical integration in the value chain of the products comprising each component; f) the type of clients, which are substantially similar in all components; g) the operative integration among components; and h) that the compensation system of a specific cou

Revenues and Construction Contr

Revenues and Construction Contracts	12 Months Ended
	Dec. 31, 2017
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Revenues and Construction Contracts	3) REVENUES AND CONSTRUCTION CONTRACTS For the years ended December 31, 2017, 2016 and 2015, net sales, after eliminations between related parties resulting from consolidation, were as follows: 2017 2016 2015 From the sale of goods associated to CEMEX’s main activities 1 Ps 246,820 239,696 211,258 From the sale of services 2 3,313 3,110 2,811 From the sale of other goods and services 3 7,998 7,139 5,230 Ps 258,131 249,945 219,299 1 Includes in each period those revenues generated under construction contracts that are presented in the table below. 2 Refers mainly to revenues generated by Neoris N.V. and its subsidiaries, involved in providing information technology solutions and services. 3 Refers mainly to revenues generated by subsidiaries not individually significant operating in different lines of business. As of December 31, 2017 and 2016, amounts receivable for progress billings to customers of construction contracts and/or advances received by CEMEX from these customers were not significant. For 2017, 2016 and 2015, revenues and costs related to construction contracts in progress were as follows: Recognized 1 2017 2016 2015 Revenue from construction contracts included in consolidated net sales 2 Ps 5,508 992 1,033 994 Costs incurred in construction contracts included in consolidated cost of sales 3 (4,840 ) (1,205 ) (1,133 ) (919 ) Construction contracts gross operating profit (loss) Ps 668 (213 ) (100 ) 75 1 Revenues and costs recognized from inception of the contracts until December 31, 2017 in connection with those projects still in progress. 2 Revenues from construction contracts during 2017, 2016 and 2015, were mainly obtained in Mexico and Colombia. 3 Refers to actual costs incurred during the periods. The oldest contract in progress as of December 31, 2017 started in 2010.

Business Combinations, Disconti

Business Combinations, Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Business Combinations, Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment	4) BUSINESS COMBINATIONS, DISCONTINUED OPERATIONS, SALE OF OTHER DISPOSAL GROUPS AND SELECTED FINANCIAL INFORMATION BY GEOGRAPHIC OPERATING SEGMENT 4.1) BUSINESS COMBINATIONS On December 5, 2016, through its subsidiary Sierra Trading (“Sierra”), CEMEX presented an offer and take-over bid, which was amended on January 9, 2017 (the “Offer”), to all shareholders of Trinidad Cement Limited (“TCL”), a company publicly listed in Trinidad and Tobago, that was then also listed in Jamaica and Barbados, in which CEMEX already held a 39.5% interest prior to the Offer, to acquire up to 132,616,942 ordinary shares in TCL (equivalent to approximately 30.2% of TCL’s common stock). TCL’s main operations are located in Trinidad and Tobago, Jamaica and Barbados. Pursuant to the Offer, Sierra offered TT$5.07 in cash per TCL share, or its equivalent in US$0.76 except to Shareholders in Barbados (the “Offer Price”). On January 24, 2017, after all terms and conditions were complied with or waived, the Offer was declared unconditional. In addition, the Offer closed in Jamaica on February 7, 2017. TCL shares deposited in response to the Offer together with Sierra’s existing 39.5% shareholding in TCL represented approximately 69.8% of the outstanding shares of TCL. The total consideration paid by Sierra for the TCL shares under the Offer was US$86 (Ps1,791). CEMEX started consolidating TCL on February 1, 2017. During 2017, TCL was delisted from the Jamaica and Barbados stock exchanges. CEMEX determined a fair value of TCL’s assets as of February 1, 2017 of US$525 (Ps10,936), which considers a price of TT$5.07 per share for the percentage acquired in the Amended Offer and TT$4.15 per share, or the market price before the Offer, for the remaining shares, and US$113 (Ps2,354) of debt assumed, among other effects. The purchase of TCL represented a step acquisition. As a result, the remeasurement of CEMEX’s previous held ownership interest in TCL of 39.5% generated a gain of US$32 (Ps623) as part of “Financial income and other items, net.” All convenience translations to pesos above consider an exchange rate of 20.83 pesos per dollar as of February 1, 2017. As of December 31, 2017, after significantly concluding the allocation of TCL’s fair value to the assets acquired and liabilities assumed, the statement of financial position of TCL at the acquisition date of February 1, 2017 was as follows: As of February 1, 2017 Current assets US$ 84 Property, machinery and equipment 331 Intangible assets and other non-current 110 Total assets 525 Current liabilities (includes debt of US$47) 122 Non-current 154 Total liabilities 276 Net assets US$ 249 Non-controlling 70 Controlling interest net assets US$ 179 In connection with agreements entered into with Holcim Ltd (“Holcim” currently LafargeHolcim Ltd) on October 31, 2014, CEMEX and Holcim agreed a series of related transactions, executed on January 5, 2015, and with retrospective effects as of January 1, 2015, by means of which: a) in the Czech Republic, CEMEX acquired all of Holcim’s assets, including a cement plant, four aggregates quarries and 17 ready-mix The purchase price allocation of these acquisitions as of January 1, 2015 was as follows: Czech Republic Spain Total Current assets Ps 231 59 290 Property, machinery and equipment 1,419 2,004 3,423 Other non-current 270 — 270 Intangible assets 590 2 592 Fair value of assets acquired 2,510 2,065 4,575 Current liabilities 117 57 174 Non-current 344 114 458 Fair value of liabilities assumed 461 171 632 Fair value of net assets acquired Ps 2,049 1,894 3,943 4.2) DISCONTINUED OPERATIONS As mentioned in note 2.1, considering the resolution by the European Commission that ultimately did not allow Duna-Dráva line-by-line re-presented As of December 31, 2016, the condensed information of the statement of financial position of the Croatian Operations was as follows: 2016 Current assets Ps 573 Property, machinery and equipment, net 3,023 Intangible assets, net and other non-current 568 Total assets 4,164 Current liabilities 539 Non-current 112 Total liabilities 651 Net assets Ps 3,513 For the years 2016 and 2015, the condensed information of the income statement of the Croatian Operations was as follows: 2016 2015 Sales Ps 1,853 1,892 Cost of sales and operating expenses (1,629 ) (1,665 ) Other products (expenses), net (31 ) 13 Financial expenses, net and others (24 ) (35 ) Earnings before income tax 169 205 Income tax (29 ) (43 ) Net income Ps 140 162 On April 17, 2017, one of CEMEX’s subsidiaries in the United States signed a definitive agreement for the sale of its Pacific Northwest Materials Business consisting of aggregate, asphalt and ready-mix six-month On November 28, 2016, one of CEMEX’s subsidiaries in the United States signed a definitive agreement to divest its Concrete Reinforced Pipe Manufacturing Business (“Concrete Pipe Business”) in the United States to Quikrete Holdings, Inc. (“Quikrete”) for US$500 plus an additional US$40 contingent consideration based on future performance. On January 31, 2017, CEMEX closed the sale to Quikrete according to the agreed upon price conditions, determined a net gain on disposal of these assets for US$148 (Ps3,083), including US$260 (Ps5,369) of goodwill associated to the reporting segment in the United States that was proportionally allocated to these net assets based on their relative fair values. Considering the disposal of the entire Concrete Pipe Business, its operations for the one-month On May 26, 2016, CEMEX closed the sale of its operations in Bangladesh and Thailand to Siam City Cement Public Company Ltd. for US$70 (Ps1,450). The operations in Bangladesh and Thailand for the period from January 1 to May 26, 2016 and the year 2015, included in CEMEX’s income statements were reclassified to the single line item “Discontinued operations” and include in 2016, a gain on sale of US$24 (Ps424), net of the reclassification of foreign currency translation gains associated with these operations accrued in equity until disposal for US$7 (Ps122). With effective date October 31, 2015, after all agreed upon conditions precedent were satisfied, CEMEX completed the process for the sale of its operations in Austria and Hungary that started on August 12, 2015 to the Rohrdorfer Group for €165 (US$179 or Ps3,090), after final adjustments negotiated for changes in cash and working capital balances as of the transfer date. The combined operations in Austria and Hungary consisted of 29 aggregate quarries and 68 ready-mix ten-month The following table presents condensed combined information of the statement of operations of CEMEX’s discontinued operations in the Pacific Northwest Materials Business in the United States for the six-months one-month ten-month 2017 2016 2015 Sales Ps 1,549 8,979 11,888 Cost of sales and operating expenses (1,531 ) (8,440 ) (11,665 ) Other products (expenses), net 14 (2 ) 23 Financial expenses, net and others (3 ) (57 ) 49 Earnings before income tax 29 480 295 Income tax — (101 ) 6 Net income 29 379 301 Net income of non-controlling — — (15 ) Net income of controlling interest Ps 29 379 286 Selected condensed combined financial information of the statement of financial position at this date of such operations was as follows: 2016 Current assets Ps 1,146 Property, machinery and equipment, net 4,188 Intangible assets, net and other non-current 6,835 Total assets 12,169 Current liabilities (99 ) Non-current (336 ) Total liabilities (435 ) Net assets Ps 11,734 4.3) OTHER DISPOSAL GROUPS On November 18, 2016, a subsidiary of CEMEX in the United States closed the sale to an affiliate of Grupo Cementos de Chihuahua, S.A.B. de C.V. (“GCC”) of certain assets consisting in CEMEX’s cement plant in Odessa, Texas, two cement terminals and the building materials business in El Paso, Texas and Las Cruces, New Mexico, for an amount of US$306 (Ps6,340). The Odessa plant had an annual production capacity of approximately 537 thousand tons (unaudited). The transfer of control was effective on November 18, 2016. As a result of the sale of these assets, CEMEX recognized in 2016 a gain of US$104 (Ps2,159) as part of “Other expenses, net” in the income statement, net of an expense for the proportional write-off On September 12, 2016, CEMEX announced that one of its subsidiaries in the United States signed a definitive agreement for the sale of its Fairborn, Ohio cement plant and cement terminal in Columbus, Ohio to Eagle Materials Inc. (“Eagle Materials”) for US$400 (Ps8,288). Fairborn plant had an annual production capacity of approximately 730 thousand tons (unaudited). On February 10, 2017, CEMEX announced that such subsidiary in the United States closed the divestment of these assets, and recognized in 2017 a gain on disposal for US$188 (Ps3,694) as part of “Other expenses, net“ in the income statement, net of an expense for the proportional write-off The operations of the net assets sold to GCC and Eagle Materials, mentioned above, did not represent discontinued operations and were consolidated by CEMEX line-by-line For the years 2017, 2016 and 2015, selected combined statement of operations information of the net assets sold to GCC on November 18, 2016 and those to Eagle Materials was as follows: 2017 2016 2015 Net sales Ps 86 3,322 3,538 Operating costs and expenses (71 ) (2,800 ) (2,795 ) Operating earnings before other expenses, net Ps 15 522 743 On December 2, 2016, CEMEX agreed the sale of its assets and activities related to the ready-mix ready-mix In addition, as part of related transactions agreed with Holcim Ltd. (note 4.1), effective as of January 1, 2015, CEMEX sold to Holcim its assets in the western region of Germany, consisting of one cement plant, two cement grinding mills, one slag granulator, 22 aggregates quarries and 79 ready-mix 4.4) SELECTED FINANCIAL INFORMATION BY GEOGRAPHIC OPERATING SEGMENT Geographic operating segments represent the components of CEMEX that engage in business activities from which CEMEX may earn revenues and incur expenses, whose operating results are regularly reviewed by the entity’s top management to make decisions about resources to be allocated to the segments and assess their performance, and for which discrete financial information is available. CEMEX operates geographically on a regional basis. Effective January 1, 2016, according to an announcement made by CEMEX’s Chief Executive Officer (“CEO”), the Company’s operations were reorganized into five geographical regions, each under the supervision of a regional president, as follows: 1) Mexico, 2) United States, 3) Europe, 4) South, Central America and the Caribbean, and 5) Asia, Middle East and Africa. Each regional president supervises and is responsible for all the business activities in the countries comprising the region. These activities refer to the production, distribution, marketing and sale of cement, ready-mix The financial information by geographic operating segment issued in the financial statements of prior years was restated in order to give effect to: a) the reversal from discontinued operations related to CEMEX’s Croatian Operations for the years 2016 and 2015 (note 4.1); and b) the new geographical operating organization described above for the year 2015. Until December 31, 2015, CEMEX’s operations were organized into six geographical regions: 1) Mexico, 2) United States, 3) Northern Europe, 4) Mediterranean, 5) South, Central America and the Caribbean, and 6) Asia. Under the current operating organization, the geographical operating segments under the former Mediterranean region were incorporated into the current Europe region or the Asia, Middle East and Africa region, as corresponded. Considering the financial information that is regularly reviewed by CEMEX’s top management, each geographic region and the countries that comprise such regions represent reportable operating segments. However, for disclosure purposes in these notes, considering similar regional and economic characteristics and/or the fact that certain countries do not exceed certain materiality thresholds to be reported separately, such countries have been aggregated and presented as single line items as follows: a) “Rest of Europe” is mainly comprised of CEMEX’s operations in the Czech Republic, Poland, Croatia and Latvia, as well as trading activities in Scandinavia and Finland; b) “Rest of South, Central America and the Caribbean” is mainly comprised of CEMEX’s operations in Puerto Rico, the Dominican Republic, Nicaragua, Jamaica and other countries in the Caribbean, excluding TCL, Guatemala, and small ready-mix Considering that is an indicator of CEMEX’s ability to internally fund capital expenditures, as well as a widely accepted financial indicator to measure CEMEX’s ability to service or incur debt (note 16), one relevant indicator used by CEMEX’s management to evaluate the performance of each country is “Operating EBITDA” (operating earnings before other expenses, net, plus depreciation and amortization). This is not an indicator of CEMEX’s financial performance, an alternative to cash flows, a measure of liquidity or comparable to other similarly titled measures of other companies. This indicator, which is presented in the selected financial information by geographic operating segment, is consistent with the information used by CEMEX’s management for decision-making purposes. The accounting policies applied to determine the financial information by geographic operating segment are consistent with those described in note 2. Selected information of the consolidated statements of operations by geographic operating segment for the years ended December 31, 2017, 2016 and 2015 was as follows: 2017 Net sales Less: Net sales Operating Less: Operating Other Financial Other Mexico Ps 58,442 (1,075 ) 57,367 21,215 2,246 18,969 (687 ) (409 ) (534 ) United States 65,536 — 65,536 10,652 6,200 4,452 3,202 (631 ) (177 ) Europe United Kingdom 20,179 — 20,179 2,763 997 1,766 450 (77 ) (397 ) France 16,162 — 16,162 855 549 306 (129 ) (61 ) 18 Germany 10,056 (1,339 ) 8,717 743 509 234 (11 ) (14 ) (63 ) Spain 6,870 (990 ) 5,880 344 638 (294 ) (711 ) (34 ) 12 Poland 5,552 (74 ) 5,478 647 361 286 (140 ) (30 ) (8 ) Rest of Europe 9,439 (864 ) 8,575 1,463 688 775 (131 ) (24 ) 71 South, Central America and the Caribbean (“SAC”) Colombia 1 10,685 — 10,685 2,166 507 1,659 (642 ) (129 ) (36 ) Panama 1 5,112 (98 ) 5,014 2,007 319 1,688 (20 ) (5 ) 7 Costa Rica 1 2,805 (379 ) 2,426 1,000 99 901 — (5 ) 29 Caribbean TCL 3 4,332 (49 ) 4,283 1,059 610 449 (139 ) (215 ) (25 ) Rest of SAC 1 11,716 (872 ) 10,844 2,602 449 2,153 (1,069 ) (23 ) (12 ) Asia, Middle East and Africa (“AMEA”) Philippines 2 8,296 — 8,296 1,394 528 866 89 (3 ) (24 ) Egypt 3,862 — 3,862 594 299 295 (210 ) (60 ) 574 Rest of AMEA 13,516 — 13,516 1,855 363 1,492 (174 ) (28 ) 12 Others 22,514 (11,203 ) 11,311 (2,796 ) 630 (3,426 ) (3,493 ) (17,553 ) 4,169 Continuing operations 275,074 (16,943 ) 258,131 48,563 15,992 32,571 (3,815 ) (19,301 ) 3,616 Discontinued operations 1,550 (1 ) 1,549 75 57 18 14 (3 ) — Total Ps 276,624 (16,944 ) 259,680 48,638 16,049 32,589 (3,801 ) (19,304 ) 3,616 2016 Net sales Less: Net sales Operating Less: Operating Other Financial Other Mexico Ps 53,579 (848 ) 52,731 19,256 2,390 16,866 (608 ) (339 ) 2,695 United States 66,554 — 66,554 10,973 6,400 4,573 2,919 (487 ) (212 ) Europe United Kingdom 21,153 — 21,153 3,606 1,047 2,559 711 (63 ) (393 ) France 14,535 — 14,535 669 484 185 (110 ) (53 ) 2 Germany 9,572 (1,385 ) 8,187 553 464 89 (64 ) (15 ) (85 ) Spain 6,563 (841 ) 5,722 814 663 151 (112 ) (37 ) (9 ) Poland 4,799 (88 ) 4,711 579 330 249 6 (11 ) 123 Rest of Europe 7,935 (541 ) 7,394 1,141 660 481 (103 ) (33 ) 77 South, Central America and the Caribbean (“SAC”) Colombia 1 12,415 (1 ) 12,414 3,975 489 3,486 (575 ) 46 38 Panama 1 4,906 (124 ) 4,782 2,170 340 1,830 (7 ) (27 ) 5 Costa Rica 1 2,818 (351 ) 2,467 1,127 116 1,011 (23 ) (11 ) 27 Rest of SAC 1 11,378 (778 ) 10,600 2,875 437 2,438 (1,226 ) (28 ) (182 ) Asia, Middle East and Africa (“AMEA”) Philippines 2 9,655 — 9,655 2,687 530 2,157 21 (1 ) (24 ) Egypt 6,950 (5 ) 6,945 2,454 539 1,915 (213 ) (78 ) (253 ) Rest of AMEA 11,858 (12 ) 11,846 1,617 299 1,318 (112 ) (27 ) 27 Others 18,846 (8,597 ) 10,249 (2,962 ) 803 (3,765 ) (2,174 ) (20,323 ) 2,653 Continuing operations 263,516 (13,571 ) 249,945 51,534 15,991 35,543 (1,670 ) (21,487 ) 4,489 Discontinued operations 9,186 (207 ) 8,979 1,232 693 539 (2 ) (10 ) (47 ) Total Ps 272,702 (13,778 ) 258,924 52,766 16,684 36,082 (1,672 ) (21,497 ) 4,442 2015 Net sales Less: Net sales Operating Less: Operating Other Financial Other Mexico Ps 50,260 (5,648 ) 44,612 15,362 2,399 12,963 (684 ) (210 ) 915 United States 56,846 (18 ) 56,828 7,985 5,629 2,356 234 (437 ) (144 ) Europe United Kingdom 20,227 — 20,227 2,705 1,004 1,701 (147 ) (95 ) (299 ) France 12,064 — 12,064 670 438 232 (8 ) (48 ) (10 ) Germany 8,285 (1,276 ) 7,009 542 389 153 49 (14 ) (61 ) Spain 6,151 (755 ) 5,396 1,031 604 427 (735 ) (72 ) (2 ) Poland 4,445 (108 ) 4,337 598 295 303 18 (54 ) 33 Rest of Europe 7,457 (660 ) 6,797 1,110 739 371 (187 ) (23 ) (122 ) South, Central America and the Caribbean (“SAC”) Colombia 1 11,562 (2 ) 11,560 4,041 500 3,541 (88 ) (50 ) (570 ) Panama 1 4,599 (68 ) 4,531 1,869 298 1,571 (180 ) (13 ) 2 Costa Rica 1 2,658 (229 ) 2,429 1,096 102 994 (2 ) (9 ) 2 Rest of SAC 1 12,177 (1,988 ) 10,189 2,295 445 1,850 (87 ) (22 ) (119 ) Asia, Middle East and Africa (“AMEA”) Philippines 2 8,436 (4 ) 8,432 2,206 447 1,759 (12 ) (20 ) 19 Egypt 6,923 (5 ) 6,918 1,777 536 1,241 (254 ) (115 ) 114 Rest of AMEA 9,929 — 9,929 1,250 244 1,006 (53 ) (23 ) (1 ) Others 16,793 (8,752 ) 8,041 (3,003 ) 589 (3,592 ) (896 ) (18,579 ) (1,090 ) Continuing operations 238,812 (19,513 ) 219,299 41,534 14,658 26,876 (3,032 ) (19,784 ) (1,333 ) Discontinued operations 11,944 (56 ) 11,888 1,201 978 223 23 (17 ) 66 Total Ps 250,756 (19,569 ) 231,187 42,735 15,636 27,099 (3,009 ) (19,801 ) (1,267 ) 1 CEMEX Latam Holdings, S.A. (“CLH”), entity incorporated in Spain, trades its ordinary shares in the Colombian Stock Exchange. CLH is the indirect holding company of CEMEX’s operations in Colombia, Panama, Costa Rica, Guatemala, Nicaragua, El Salvador and Brazil. At year end 2017 and 2016, there is a non-controlling 2 CEMEX’s operations in the Philippines are conducted through CEMEX Holdings Philippines, Inc. (“CHP”), subsidiary incorporated in the Philippines which since July 2016 trades its ordinary shares in the Philippines Stock Exchange under the symbol CHP. As of December 31, 2017 and 2016, there is a non-controlling 3 As mentioned in note 4.1, in February 2017, CEMEX’s acquired a controlling interest in TCL, which main operations are located in Trinidad and Tobago (“T&T”), Jamaica and Barbados. TCL shares trade in the T&T stock exchange. As of December 31, 2017, there is a non-controlling The information of share of profits of equity accounted investees by geographic operating segment for the years ended December 31, 2017, 2016 and 2015 is included in the note 13.1. As of December 31, 2017 and 2016, selected statement of financial position information by geographic segment was as follows: 2017 Equity Other Total Total Net assets Additions to 1 Mexico Ps 241 71,280 71,521 23,574 47,947 2,133 United States 1,573 266,769 268,342 32,366 235,976 3,498 Europe United Kingdom 107 34,774 34,881 24,160 10,721 1,010 France 1,055 18,481 19,536 7,360 12,176 372 Germany 85 9,010 9,095 6,848 2,247 441 Spain — 25,731 25,731 3,543 22,188 553 Poland 9 5,477 5,486 3,086 2,400 230 Rest of Europe 158 16,123 16,281 3,627 12,654 321 South, Central America and the Caribbean Colombia — 24,406 24,406 11,307 13,099 1,178 Panama — 7,232 7,232 1,029 6,203 152 Costa Rica — 1,869 1,869 646 1,223 42 Caribbean TCL — 11,004 11,004 4,917 6,087 584 Rest of South, Central America and the Caribbean 31 11,298 11,329 4,366 6,963 357 Asia, Middle East and Africa Philippines 6 11,548 11,554 2,617 8,937 518 Egypt 1 4,602 4,603 1,776 2,827 418 Rest of Asia, Middle East and Africa — 13,671 13,671 8,027 5,644 449 Others 5,306 24,356 29,662 217,914 (188,252 ) 163 Continuing operations 8,572 557,631 566,203 357,163 209,040 12,419 Assets held for sale and related liabilities (note 12.1) — 1,378 1,378 — 1,378 — Total Ps 8,572 559,009 567,581 357,163 210,418 12,419 2016 Equity Other Total Total Net assets Additions to 1 Mexico Ps 490 70,012 70,502 20,752 49,750 1,651 United States 1,587 287,492 289,079 30,118 258,961 3,760 Europe United Kingdom 104 32,469 32,573 22,914 9,659 599 France 909 16,855 17,764 6,829 10,935 379 Germany 74 8,396 8,470 6,694 1,776 507 Spain 13 27,251 27,264 3,206 24,058 490 Poland 10 5,036 5,046 2,072 2,974 181 Rest of Europe 270 15,345 15,615 3,221 12,394 258 South, Central America and the Caribbean Colombia — 26,532 26,532 11,548 14,984 3,633 Panama — 7,958 7,958 1,144 6,814 126 Costa Rica — 1,928 1,928 691 1,237 73 Rest of South, Central America and the Caribbean 28 12,517 12,545 4,133 8,412 441 Asia, Middle East and Africa Philippines 6 12,308 12,314 2,696 9,618 341 Egypt 1 5,512 5,513 2,907 2,606 381 Rest of Asia, Middle East and Africa — 12,347 12,347 6,994 5,353 394 Others 6,996 26,253 33,249 276,269 (243,020 ) 65 Continuing operations 10,488 568,211 578,699 402,188 176,511 13,279 Assets held for sale and related liabilities (note 12.1) — 21,029 21,029 815 20,214 — Total Ps 10,488 589,240 599,728 403,003 196,725 13,279 1 In 2017 and 2016, the column “Additions to fixed assets” includes capital expenditures of Ps9,514 and Ps12,676, respectively (note 14). Total consolidated liabilities as of December 31, 2017 and 2016 included debt of Ps193,995 and Ps236,238, respectively. Of such balances, as of December 31, 2017 and 2016, approximately 80% and 73% was in the Parent Company, less than 1% and 1% was in Spain, 15% and 25% was in finance subsidiaries in the Netherlands, Luxembourg and the United States, and 4% and 2% was in other countries, respectively. The Parent Company and the finance subsidiaries mentioned above are included within the segment “Others.” Net sales by product and geographic segment for the years ended December 31, 2017, 2016 and 2015 were as follows: 2017 Cement Concrete Aggregates Others Eliminations Net sales Mexico Ps 42,195 14,672 3,416 11,211 (14,127 ) 57,367 United States 27,804 35,400 14,436 6,235 (18,339 ) 65,536 Europe United Kingdom 4,879 7,459 7,758 8,067 (7,984 ) 20,179 France — 13,367 6,373 205 (3,783 ) 16,162 Germany 3,595 4,668 2,134 2,335 (4,015 ) 8,717 Spain 5,499 944 259 676 (1,498 ) 5,880 Poland 3,230 2,532 701 226 (1,211 ) 5,478 Rest of Europe 6,236 2,715 1,055 462 (1,893 ) 8,575 South, Central America and the Caribbean Colombia 7,043 4,024 1,224 1,960 (3,566 ) 10,685 Panama 3,876 1,725 452 180 (1,219 ) 5,014 Costa Rica 2,095 386 122 120 (297 ) 2,426 Caribbean TCL 4,097 29 19 215 (77 ) 4,283 Rest of South, Central America and the Caribbean 11,412 1,308 268 307 (2,451 ) 10,844 Asia, Middle East and Africa Philippines 8,093 67 159 52 (75 ) 8,296 Egypt 3,347 479 16 173 (153 ) 3,862 Rest of Asia, Middle East and Africa 928 11,078 2,875 2,148 (3,513 ) 13,516 Others — — — 22,515 (11,204 ) 11,311 Continuing operations 134,329 100,853 41,267 57,087 (75,405 ) 258,131 Discontinued operations — 525 340 687 (3 ) 1,549 Total Ps 134,329 101,378 41,607 57,774 (75,408 ) 259,680 2016 Cement Concrete Aggregates Others Eliminations Net sales Mexico Ps 37,647 13,664 3,156 11,773 (13,509 ) 52,731 United States 28,585 35,843 14,565 7,107 (19,546 ) 66,554 Europe United Kingdom 5,267 7,830 8,195 7,889 (8,028 ) 21,153 France — 11,883 5,640 278 (3,266 ) 14,535 Germany 3,416 4,539 2,112 2,262 (4,142 ) 8,187 Spain 5,478 823 196 472 (1,247 ) 5,722 Poland 2,811 2,237 579 219 (1,135 ) 4,711 Rest of Europe 5,286 2,254 911 338 (1,395 ) 7,394 South, Central America and the Caribbean Colombia 8,814 4,522 1,364 1,761 (4,047 ) 12,414 Panama 3,794 1,577 413 139 (1,141 ) 4,782 Costa Rica 2,144 390 179 126 (372 ) 2,467 Rest of South, Central America and the Caribbean 10,998 1,526 322 298 (2,544 ) 10,600 Asia, Middle East and Africa Philippines 9,405 143 164 70 (127 ) 9,655 Egypt 6,076 943 26 217 (317 ) 6,945 Rest of Asia, Middle East and Africa 961 9,535 2,519 1,379 (2,548 ) 11,846 Others — — — 18,851 (8,602 ) 10,249 Continuing operations 130,682 97,709 40,341 53,179 (71,966 ) 249,945 Discontinued operations 422 1,366 785 6,665 (259 ) 8,979 Total Ps 131,104 99,075 41,126 59,844 (72,225 ) 258,924 2015 Cement Concrete Aggregates Others Eliminations Net sales Mexico Ps 30,384 13,163 2,860 9,956 (11,751 ) 44,612 United States 23,358 30,129 11,914 7,994 (16,567 ) 56,828 Europe United Kingdom 4,705 7,729 7,614 7,859 (7,680 ) 20,227 France — 10,026 4,410 224 (2,596 ) 12,064 Germany 3,098 3,749 1,790 2,103 (3,731 ) 7,009 Spain 5,265 721 150 392 (1,132 ) 5,396 Poland 2,630 1,916 489 197 (895 ) 4,337 Rest of Europe 5,075 1,945 728 562 (1,513 ) 6,797 South, Central America and the Caribbean Colombia 8,158 4,428 1,329 1,345 (3,700 ) 11,560 Panama 3,368 1,424 383 172 (816 ) 4,531 Costa Rica 2,092 367 138 109 (277 ) 2,429 Rest of South, Central America and the Caribbean 9,633 2,058 376 451 (2,329 ) 10,189 Asia, Middle East and Africa Philippines 8,270 115 96 62 (111 ) 8,432 Egypt 6,052 975 36 236 (381 ) 6,918 Rest of Asia, Middle East and Africa 880 7,956 1,931 1,115 (1,953 ) 9,929 Others — — — 16,811 (8,770 ) 8,041 Continuing operations 112,968 86,701 34,244 49,588 (64,202 ) 219,299 Discontinued operations 1,046 3,877 1,928 5,474 (437 ) 11,888 Total Ps 114,014 90,578 36,172 55,062 (64,639 ) 231,187

Operating Expenses, Depreciatio

Operating Expenses, Depreciation and Amortization	12 Months Ended
	Dec. 31, 2017
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Operating Expenses, Depreciation and Amortization	5) OPERATING EXPENSES, DEPRECIATION AND AMORTIZATION Consolidated operating expenses during 2017, 2016 and 2015 by function are as follows: 2017 2016 2015 Administrative expenses 1 Ps 21,081 20,750 18,653 Selling expenses 6,450 6,974 5,883 Distribution and logistics expenses 28,495 26,245 23,374 Ps 56,026 53,969 47,910 1 The Technology and Energy departments in CEMEX undertake all significant R&D activities as part of their daily activities. In 2017, 2016 and 2015, total combined expenses of these departments recognized within administrative expenses were Ps754 (US$38), Ps712 (US$38) and Ps660 (US$41), respectively. Depreciation and amortization recognized during 2017, 2016 and 2015 are detailed as follows: 2017 2016 2015 Depreciation and amortization expense included in cost of sales Ps 14,146 14,180 13,154 Depreciation and amortization expense included in administrative, selling and distribution and logistics expenses 1,846 1,811 1,504 Ps 15,992 15,991 14,658

Other Expenses, Net

Other Expenses, Net	12 Months Ended
	Dec. 31, 2017
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Other Expenses, Net	6) OTHER EXPENSES, NET The detail of the line item “Other expenses, net” in 2017, 2016 and 2015 was as follows: 2017 2016 2015 Impairment losses 1 Ps (2,936 ) (2,518 ) (1,517 ) Restructuring costs 2 (843 ) (778 ) (845 ) Charitable contributions (127 ) (93 ) (60 ) Results from the sale of assets and others, net 3 91 1,719 (610 ) Ps (3,815 ) (1,670 ) (3,032 ) 1 In 2017, 2016 and 2015, among others, includes impairment losses of fixed assets for approximately Ps984, Ps1,899 and Ps1,145, respectively, as well as impairment losses of goodwill in 2017 for Ps1,920 (notes 13.2, 14 and 15). 2 In 2017, 2016 and 2015, restructuring costs mainly refer to severance payments. 3 In 2017, includes an expense in Colombian pesos equivalent to approximately Ps491 (US$25) for a penalty imposed by the Commerce and Industry Superintendence in Colombia in connection with a market investigation (note 24.2).

Financial Income and Other Item

Financial Income and Other Items, Net	12 Months Ended
	Dec. 31, 2017
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Financial Income and Other Items, Net	7) FINANCIAL INCOME AND OTHER ITEMS, NET The detail of the line item “Financial income and other items, net” in 2017, 2016 and 2015 was as follows: 2017 2016 2015 Results in the sale of associates and remeasurement of previously held interest before change in control of associates (notes 4.1 and 13.1) Ps 4,164 — — Financial income 338 402 318 Results from financial instruments, net (notes 13.2 and 16.4) 161 113 (2,729 ) Foreign exchange results (26 ) 5,004 1,970 Effects of NPV on assets and liabilities and others, net (1,021 ) (1,030 ) (892 ) Ps 3,616 4,489 (1,333 )

Cash and Cash Equivalents

Cash and Cash Equivalents	12 Months Ended
	Dec. 31, 2017
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Cash and Cash Equivalents	8) CASH AND CASH EQUIVALENTS As of December 31, 2017 and 2016, consolidated cash and cash equivalents consisted of: 2017 2016 Cash and bank accounts Ps 9,292 9,104 Fixed-income securities and other cash equivalents 4,449 2,512 Ps 13,741 11,616 Based on net settlement agreements, the balance of cash and cash equivalents excludes deposits in margin accounts that guarantee several obligations of CEMEX of Ps196 in 2017 and Ps250 in 2016, which were offset against the corresponding obligations of CEMEX with the counterparties, considering CEMEX’s right, ability and intention to settle the amounts on a net basis.

Trade Accounts Receivable, Net

Trade Accounts Receivable, Net	12 Months Ended
	Dec. 31, 2017
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Trade Accounts Receivable, Net	9) TRADE ACCOUNTS RECEIVABLE, NET As of December 31, 2017 and 2016, consolidated trade accounts receivable consisted of: 2017 2016 Trade accounts receivable Ps 32,623 32,356 Allowances for doubtful accounts (2,145 ) (2,196 ) Ps 30,478 30,160 As of December 31, 2017 and 2016, trade accounts receivable include receivables of Ps12,713 (US$647) and Ps13,644 (US$658), respectively, sold under outstanding trade receivables securitization programs and/or factoring programs with recourse, established in Mexico, the United States, France and the United Kingdom, in which CEMEX effectively surrenders control associated with the trade accounts receivable sold and there is no guarantee or obligation to reacquire the assets; nonetheless, in such programs, CEMEX retains certain residual interest in the programs and/or maintains continuing involvement with the accounts receivable. Therefore, the trade accounts receivable sold were not removed from the statement of financial position and the funded amounts to CEMEX of Ps11,313 (US$576) in 2017 and Ps11,095 (US$535) in 2016, were recognized within the line item of “Other financial obligations,” the difference in each year against the trade receivables sold was maintained as reserves. Trade accounts receivable qualifying for sale exclude amounts over certain days past due or concentrations over certain limits to any one customer, according to the terms of the programs. The discount granted to the acquirers of the trade accounts receivable is recorded as financial expense and amounted to Ps308 in 2017, Ps258 in 2016 and Ps249 in 2015. CEMEX’s securitization programs are negotiated for periods of one to two years and are usually renewed at their maturity. Allowances for doubtful accounts were established until December 31, 2017 based on an incurred loss model according to the credit history and risk profile of each customer (note 2.20). Changes in the valuation of this caption allowance for doubtful accounts in 2017, 2016 and 2015, were as follows: 2017 2016 2015 Allowances for doubtful accounts at beginning of period Ps 2,196 2,152 1,856 Charged to selling expenses 252 556 434 Additions through business combinations 141 — — Deductions (449 ) (867 ) (276 ) Foreign currency translation effects 5 355 138 Allowances for doubtful accounts at end of period Ps 2,145 2,196 2,152

Other Accounts Receivable

Other Accounts Receivable	12 Months Ended
	Dec. 31, 2017
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Other Accounts Receivable	10) OTHER ACCOUNTS RECEIVABLE As of December 31, 2017 and 2016, consolidated other accounts receivable consisted of: 2017 2016 Non-trade 1 Ps 1,918 2,527 Interest and notes receivable 2 1,125 1,286 Current portion of valuation of derivative financial instruments 1,056 236 Loans to employees and others 233 188 Refundable taxes 638 1,001 Ps 4,970 5,238 1 Non-trade 2 Includes Ps27 in 2016, representing the short-term portion of a restricted investment related to coupon payments under CEMEX’s perpetual debentures (note 20.4). In addition, in 2016, includes CEMEX Colombia’s beneficial interest in a trust oriented to promote housing projects, which its only asset is land in the municipality of Zipaquira, Colombia and its only liability is a bank credit for Ps148, guaranteed by CEMEX Colombia, obtained to purchase the land. The estimated fair value of the land as determined by external appraiser significantly exceeds the amount of the loan.

Inventories, Net

Inventories, Net	12 Months Ended
	Dec. 31, 2017
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Inventories, Net	11) INVENTORIES, NET As of December 31, 2017 and 2016, the consolidated balance of inventories was summarized as follows: 2017 2016 Finished goods Ps 5,933 5,865 Work-in-process 3,814 3,378 Raw materials 3,237 3,128 Materials and spare parts 4,996 4,551 Inventory in transit 872 1,176 Ps 18,852 18,098 For the years ended December 31, 2017, 2016 and 2015, CEMEX recognized within “Cost of sales” in the income statement, inventory impairment losses of Ps23, Ps52 and Ps49, respectively.

Assets Held for Sale and Other

Assets Held for Sale and Other Current Asset	12 Months Ended
	Dec. 31, 2017
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Assets Held for Sale and Other Current Asset	12) ASSETS HELD FOR SALE AND OTHER CURRENT ASSETS 12.1) ASSETS HELD FOR SALE As of December 31, 2017 and 2016, assets held for sale, which are measured at the lower of their estimated realizable value, less costs to sell, and their carrying amounts, as well as liabilities directly related with such assets are detailed as follows: 2017 2016 Assets Liabilities Net assets Assets Liabilities Net assets Concrete Pipe Division (note 4.2) Ps — — — Ps 9,426 642 8,784 Fairborn cement plant (note 4.3) — — — 5,957 164 5,793 Investment in shares of GCC (note 13.1) 1 — — — 3,882 — 3,882 Idle assets in Andorra, Spain 580 — 580 560 — 560 Concrete pumping equipment (note 4.3) — — — 213 — 213 Other assets held for sale 798 — 798 991 9 982 Ps 1,378 — 1,378 Ps 21,029 815 20,214 1 During 2017, in separate transactions, CEMEX sold the direct investment in 23% of GCC’s common stock it maintained for sale (note 13.1). 12.2) OTHER CURRENT ASSETS As of December 31, 2017 and 2016, other current assets are mainly comprised of advance payments.

Equity Accounted Investees, Oth

Equity Accounted Investees, Other Investments and Non-Current Accounts Receivable	12 Months Ended
	Dec. 31, 2017
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Equity Accounted Investees, Other Investments and Non-Current Accounts Receivable	13) EQUITY ACCOUNTED INVESTEES, OTHER INVESTMENTS AND NON-CURRENT 13.1) EQUITY ACCOUNTED INVESTEES As of December 31, 2017 and 2016, the investments in common shares of associates were as follows: Activity Country % 2017 2016 Camcem, S.A. de C.V. Cement Mexico 40.1 Ps 3,618 3,674 Trinidad Cement Limited Cement Trinidad and 39.5 — 1,689 Concrete Supply Co. LLC Concrete United States 40.0 1,192 1,234 Akmenes Cementas AB Cement Lithuania 37.8 585 586 ABC Capital, S.A. Institución de Banca Múltiple Financing Mexico 33.9 228 474 Lehigh White Cement Company Cement United States 24.5 375 334 Société Méridionale de Carrières Aggregates France 33.3 367 300 Société d’Exploitation de Carrières Aggregates France 50.0 318 257 Cemento Interoceánico S.A. (formerly Industrias Básicas, S.A.) Cement Panama 25.0 168 155 Other companies — — — 1,721 1,785 Ps 8,572 10,488 Out of which: Book value at acquisition date Ps 6,957 8,275 Changes in stockholders’ equity Ps 1,615 2,213 During 2016, the Parent Company participated as shareholder in a share restructuring executed by Camcem, S.A. de C.V. (“Camcem”), indirect parent company of Control Administrativo Mexicano, S.A. de C.V. (“Camsa”) and GCC, aimed to simplify its corporate structure, by means of which, Imin de México, S.A. de C.V., intermediate holding company, Camsa and GCC were merged, prevailing GCC as the surviving entity. As a result of the share restructuring, CEMEX’s 10.3% interest in Camcem and 49% interest in Camsa, both before the restructuring, were exchanged on equivalent basis into a 40.1% interest in Camcem and a 23% interest in GCC, which shares of the latest trade in the MSE (note 12.1). On January 25, 2017, in a public offering to investors in Mexico conducted through the BMV and in a concurrent private placement to eligible investors outside of Mexico, the Parent Company and GCC announced the offering of up to 76,483,332 shares (all the shares of GCC owned by CEMEX) at a price range of between 95.00 to 115.00 pesos per share, which included 9,976,087 shares available to the underwriters of the offerings pursuant to a 30-day In addition, on September 28, 2017, CEMEX announced the definitive sale to two financial institutions of the remaining 31,483,332 shares of GCC, which represented approximately 9.47% of the equity capital of GCC. Proceeds from the sale were Ps3,012 and generated a gain on sale of Ps1,682 recognized as part of “Financial income and other items, net” in the income statement. CEMEX continues to have an approximate 20% indirect interest in GCC through Camcem. As mentioned in note 4.1, by means of a public offer and take-over bid through its subsidiary Sierra, and effective as of February 1, 2017, CEMEX acquired a majority ownership interest in TCL’s common stock and assumed control of this entity. Combined condensed statement of financial position information of CEMEX’s associates as of December 31, 2017 and 2016 is set forth below: 2017 2016 Current assets Ps 21,527 21,651 Non-current 32,071 41,085 Total assets 53,598 62,736 Current liabilities 10,863 11,612 Non-current 17,730 22,436 Total liabilities 28,593 34,048 Total net assets Ps 25,005 28,688 Combined selected information of the statements of operations of CEMEX’s associates in 2017, 2016 and 2015 is set forth below: 2017 2016 2015 Sales Ps 28,158 29,791 25,484 Operating earnings 4,458 4,730 3,523 Income before income tax 2,451 3,111 3,350 Net income 1,891 1,860 2,403 The share of equity accounted investees by geographic operating segment in the income statements for 2017, 2016 and 2015 is detailed as follows: 2017 2016 2015 Mexico Ps 269 452 330 United States 266 253 92 Europe 108 54 339 Corporate and others (55 ) (71 ) (24 ) Ps 588 688 737 13.2) OTHER INVESTMENTS AND NON-CURRENT As of December 31, 2017 and 2016, consolidated other investments and non-current 2017 2016 Non-current Ps 794 1,900 Non-current 1 4,612 4,572 Investments available-for-sale 2 275 491 Investments held for trading 3 77 157 Ps 5,758 7,120 1 Includes, among other items: a) advances to suppliers of fixed assets of Ps43 in 2017 and Ps52 in 2016. CEMEX recognized impairment losses of non-current 2 This line item refers mainly to a strategic investment in CPOs of Axtel, S.A.B. de C.V. (“Axtel”). This investment is recognized as available for sale at fair value and changes in valuation are recorded in other items comprehensive income, net until its disposal. 3 This line item refers to investments in private funds. In 2017 and 2016, no contributions were made to such private funds.

Property, Machinery and Equipme

Property, Machinery and Equipment, Net	12 Months Ended
	Dec. 31, 2017
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Property, Machinery and Equipment, Net	14) PROPERTY, MACHINERY AND EQUIPMENT, NET As of December 31, 2017 and 2016, consolidated property, machinery and equipment, net and the changes in such line item during 2017, 2016 and 2015, were as follows: 2017 Land and 1 Building 1 Machinery 2 Construction 3 Total Cost at beginning of period Ps 97,218 51,740 229,717 17,247 395,922 Accumulated depreciation and depletion (16,301 ) (24,224 ) (125,263 ) — (165,788 ) Net book value at beginning of period 80,917 27,516 104,454 17,247 230,134 Capital expenditures 547 802 8,165 — 9,514 Additions through capital leases — — 2,096 — 2,096 Stripping costs 809 — — — 809 Total capital expenditures 1,356 802 10,261 — 12,419 Disposals 4 (347 ) (223 ) (1,274 ) — (1,844 ) Reclassifications 5 (784 ) (82 ) (768 ) — (1,634 ) Business combinations 2,179 749 3,136 428 6,492 Depreciation and depletion for the period (2,571 ) (1,967 ) (9,417 ) — (13,955 ) Impairment losses (202 ) (1 ) (763 ) (18 ) (984 ) Foreign currency translation effects (1,895 ) 908 719 1,800 1,532 Cost at end of period 95,495 53,927 242,636 19,457 411,515 Accumulated depreciation and depletion (16,842 ) (26,225 ) (136,288 ) — (179,355 ) Net book value at end of period Ps 78,653 27,702 106,348 19,457 232,160 2016 Land and 1 Building 1 Machinery 2 Construction 3 Total 2015 Cost at beginning of period Ps 86,441 48,563 211,232 13,853 360,089 324,210 Accumulated depreciation and depletion (12,215 ) (21,228 ) (109,952 ) — (143,395 ) (118,668 ) Net book value at beginning of period 74,226 27,335 101,280 13,853 216,694 205,542 Capital expenditures 2,149 1,856 8,671 — 12,676 11,454 Additions through capital leases — — 7 — 7 63 Capitalization of financial expense — — — 175 175 73 Stripping costs 421 — — — 421 723 Total capital expenditures 2,570 1,856 8,678 175 13,279 12,313 Disposals 4 (388 ) (141 ) (1,268 ) (44 ) (1,841 ) (2,247 ) Reclassifications 5 (2,029 ) (703 ) (1,731 ) (86 ) (4,549 ) (3,099 ) Business combinations — — — — — 4,004 Depreciation and depletion for the period (2,426 ) (2,033 ) (9,582 ) — (14,041 ) (13,086 ) Impairment losses (671 ) (303 ) (547 ) (378 ) (1,899 ) (1,145 ) Foreign currency translation effects 9,635 1,505 7,624 3,727 22,491 14,412 Cost at end of period 97,218 51,740 229,717 17,247 395,922 360,089 Accumulated depreciation and depletion (16,301 ) (24,224 ) (125,263 ) — (165,788 ) (143,395 ) Net book value at end of period Ps 80,917 27,516 104,454 17,247 230,134 216,694 1 Includes corporate buildings and related land sold to financial institutions in previous years, which were leased back. The aggregate carrying amount of these assets as of December 31, 2017 and 2016 was Ps1,690 and Ps1,777, respectively. 2 Includes assets, mainly mobile equipment, acquired through finance leases, which carrying amount as of December 31, 2017 and 2016 was Ps2,096 and Ps7, respectively. 3 In July 2014, CEMEX Colombia began the construction of a new cement plant in the municipality of Maceo in the Antioquia department in Colombia with an annual capacity of approximately 1.1 million tons. The first phase included the construction of a cement mill, which began operating in testing phase for some months in 2016 with the supply of clinker from the Caracolito plant in Ibague, and the cement obtained was used in its entirety in the construction of the plant. The next phase, which includes the construction of the kiln, has been completed. In connection with the access road to the plant, the works were suspended meanwhile CEMEX Colombia obtains the permits for its completion. The beginning of commercial operations is subject to the successful conclusion of several ongoing processes related to certain operating permits and other proceedings. As a result of the investigations carried out for the deficiencies found (note 24.1), during the fourth quarter of 2016, CEMEX Colombia reduced construction in progress for Ps483 (US$23), of which, Ps295 (US$14) were recognized as impairment losses against “Other expenses, net,” considering that the assets, mainly advances for the purchase of land through a representative, were considered contingent assets based on the low probability for their recoverability due to deficiencies in the legal processes, and Ps188 (US$9) were decreased against “Other accounts payable” in connection with the cancellation of the portion payable of such assets. CEMEX Colombia determined an initial total budget for the plant of US$340. As of December 31, 2017, the carrying amount of the project, net of adjustments, is for an amount in Colombian pesos equivalent to US$333 (Ps6,543), considering the exchange rates as of December 31, 2017. 4 In 2017, includes sales of non-strategic non-strategic non-strategic 5 In 2017, refers mainly to those assets of the Pacific Northwest Materials Business in the United States for Ps1,634 (note 4.2). In 2016, refers mainly to those assets of the Concrete Pipe Business in the United States for Ps2,747, as well as other disposal groups in the United States reclassified to assets available for sale for Ps1,386 (notes 4.2, 4.3 and 12.1). In 2015, refers to other disposal groups in the United States reclassified to assets available for sale for Ps537 (notes 4.3 and 12.1). As a result of impairment tests conducted on several CGUs considering certain triggering events, mainly: a) the closing and/or reduction of operations of cement and ready-mix During the years ended December 31, 2017, 2016 and 2015 impairment losses of fixed assets by countries are as follows: 2017 2016 2015 Spain Ps 452 — 392 Czech Republic 157 — — United States 153 277 269 Panama 56 — 118 France 50 — — Latvia 46 — 126 Mexico 45 46 46 Puerto Rico — 1,087 172 Colombia — 454 — Other countries 25 35 22 Ps 984 1,899 1,145

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, Net	12 Months Ended
	Dec. 31, 2017
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Goodwill and Intangible Assets, Net	15) GOODWILL AND INTANGIBLE ASSETS, NET 15.1) BALANCES AND CHANGES DURING THE PERIOD As of December 31, 2017 and 2016, consolidated goodwill, intangible assets and deferred charges were summarized as follows: 2017 2016 Cost Accumulated Carrying Cost Accumulated Carrying Intangible assets of indefinite useful life: Goodwill Ps 195,474 — 195,474 Ps 206,319 — 206,319 Intangible assets of definite useful life: Extraction rights 39,603 (6,480 ) 33,123 40,995 (5,948 ) 35,047 Industrial property and trademarks 929 (364 ) 565 707 (350 ) 357 Customer relationships 3,859 (3,852 ) 7 4,343 (4,084 ) 259 Mining projects 797 (96 ) 701 961 (84 ) 877 Others intangible assets 14,941 (9,902 ) 5,039 13,814 (9,166 ) 4,648 Ps 255,603 (20,694 ) 234,909 Ps 267,139 (19,632 ) 247,507 The amortization of intangible assets of definite useful life was Ps2,037 in 2017, Ps1,950 in 2016 and Ps1,572 in 2015, and was recognized within operating costs and expenses. Goodwill Changes in consolidated goodwill in 2017, 2016 and 2015, were as follows: 2017 2016 2015 Balance at beginning of period Ps 206,319 184,156 160,544 Business combinations 1,965 — 64 Disposals, net (note 4.3) — (3,340 ) (552 ) Reclassification to assets held for sale and other current assets (notes 4.2, 4.3 and 12) (1,804 ) (9,734 ) — Impairment losses (1,920 ) — — Foreign currency translation effects (9,086 ) 35,237 24,100 Balance at end of period Ps 195,474 206,319 184,156 Intangible assets of definite life Changes in intangible assets of definite life in 2017, 2016 and 2015, were as follows: 2017 Extraction Industrial Customer Mining Others 1 Total Balance at beginning of period Ps 35,047 357 259 877 4,648 41,188 Additions (disposals), net 1 278 (783 ) — (148 ) 424 (229 ) Business combinations (note 4.1) — — — 4 72 76 Reclassifications (notes 4.1, 4.2 and 12) — — (27 ) — — (27 ) Amortization for the period (716 ) (110 ) (225 ) (12 ) (974 ) (2,037 ) Impairment losses (38 ) — — — (12 ) (50 ) Foreign currency translation effects (1,448 ) 1,101 — (20 ) 881 514 Balance at the end of period Ps 33,123 565 7 701 5,039 39,435 2016 Extraction Industrial Customer Mining Others 1 Total 2015 Balance at beginning of period Ps 30,327 622 1,004 805 3,808 36,566 32,940 Business combinations — — — — — — 616 Additions (disposals), net 1 201 (760 ) — (382 ) 343 (598 ) (186 ) Reclassifications (notes 4.1, 4.2 and 12) — — — — — — 1 Amortization for the period (712 ) (293 ) (658 ) (12 ) (275 ) (1,950 ) (1,572 ) Impairment losses (6 ) — — — (19 ) (25 ) (10 ) Foreign currency translation effects 5,237 788 (87 ) 466 791 7,195 4,777 Balance at the end of period Ps 35,047 357 259 877 4,648 41,188 36,566 1 As of December 31, 2017 and 2016, “Others” includes the carrying amount of internal-use internal-use 15.2) ANALYSIS OF GOODWILL IMPAIRMENT As of December 31, 2017 and 2016, goodwill balances allocated by operating segment were as follows: 2017 2016 Mexico Ps 7,371 7,529 United States 152,486 162,692 Europe Spain 10,000 12,316 United Kingdom 6,335 6,371 France 4,796 4,524 Czech Republic 709 583 South, Central America and the Caribbean Colombia 6,146 6,461 Dominican Republic 279 250 TCL 2,027 — Rest of South, Central America and the Caribbean 1 985 1,036 Asia, Middle East and Africa Philippines 1,817 1,911 United Arab Emirates 1,769 1,865 Egypt 232 231 Others Other reporting segments 2 522 550 Ps 195,474 206,319 1 This caption refers to the operating segments in the Caribbean, Costa Rica and Panama. 2 This caption is primarily associated with Neoris N.V., CEMEX’s subsidiary involved in the sale of information technology and services. For purposes of goodwill impairment tests, all cash-generating units within a country are aggregated, as goodwill is allocated at that level. Considering materiality for disclosure purposes, certain balances of goodwill were presented for Rest of South, Central America and the Caribbean, but this does not represent that goodwill was tested at a higher level than for operations in an individual country. During the last quarter of each year, CEMEX performs its annual goodwill impairment test. Based on these analyses, during 2017, in connection with the Operating Segment in Spain, considering the uncertainty over the improvement indicators affecting the country’s construction industry, and consequently in the expected consumption of cement, ready-mix During 2016 and 2015, CEMEX did not determine impairment losses of goodwill. Impairment tests are significantly sensitive to, among other factors, the estimation of future prices of CEMEX’s products, the development of operating expenses, local and international economic trends in the construction industry, the long-term growth expectations in the different markets, as well as the discount rates and the long-term growth rates applied. CEMEX’s cash flow projections to determine the value in use of its CGUs to which goodwill has been allocated consider the use of long-term economic assumptions. CEMEX believes that its discounted cash flow projections and the discount rates used reasonably reflect current economic conditions at the time of the calculations, considering, among other factors that: a) the cost of capital reflects current risks and volatility in the markets; and b) the cost of debt represents the average of industry specific interest rates observed in recent transactions. Other key assumptions used to determine CEMEX’s discounted cash flows are volume and price increases or decreases by main product during the projected periods. Volume increases or decreases generally reflect forecasts issued by trustworthy external sources, occasionally adjusted based on CEMEX’s actual backlog, experience and judgment considering its concentration in certain sectors, while price changes normally reflect the expected inflation in the respective country. Operating costs and expenses during all periods are maintained as a fixed percent of revenues considering historic performance. CEMEX’s pre-tax Discount rates Growth rates Groups of CGUs 2017 2016 2015 2017 2016 2015 United States 8.8% 8.6% 8.6% 2.5% 2.5% 2.5% Spain 9.5% 9.5% 9.9% 1.7% 1.6% 1.9% Mexico 10.2% 9.8% 9.6% 2.7% 2.9% 3.5% Colombia 10.5% 10.0% 9.8% 3.7% 4.0% 4.0% France 9.0% 9.1% 9.0% 1.8% 1.8% 1.6% United Arab Emirates 10.4% 10.2% 10.2% 3.1% 3.4% 3.6% United Kingdom 9.0% 8.8% 8.8% 1.7% 1.9% 2.3% Egypt 11.8% 11.4% 12.5% 6.0% 6.0% 4.6% Range of rates in other countries 9.1% - 11.7% 9.1% - 12.8% 9.0% - 13.8% 2.3% - 6.8% 2.2% - 7.0% 2.4% - 4.3% As of December 31, 2017, the discount rates used by CEMEX in its cash flows projections in the countries with the most significant goodwill balances increased slightly as compared to the values determined in 2016. During the year, the funding cost observed in industry slightly decreased from 6.2% in 2016 to 6.1% in 2017 and the risk multiple associated to the Company also decreased from 1.29 in 2016 to 1.26 in 2017. Nonetheless, these decreases were offset by an increase in the risk free rate which change from 2.70% in 2016 to 2.76% in 2017, as well as by overall increases in the sovereign risk rate of the majority of the countries. As of December 31, 2016, the discount rates remained almost flat in most cases as compared to the values determined in 2015. Among other factors, the funding cost observed in industry decreased from 6.9% in 2015 to 6.2% in 2016, and the risk free rate decreased from approximately 3.2% in 2015 to 2.7 % in 2016. Nonetheless, these increases were offset by reductions in 2016 in the country specific sovereign yields in the majority of the countries where CEMEX operates. As of December 31, 2015, the discount rates remained almost flat in most cases as compared to the values determined in previous year. In respect to long-term growth rates, following general practice under IFRS, CEMEX uses country specific rates, which are mainly obtained from the Consensus Economics, a compilation of analysts’ forecast worldwide, or from the International Monetary Fund when the first are not available for a specific country. In connection with the assumptions included in the table above, CEMEX made sensitivity analyses to changes in assumptions, affecting the value in use of all groups of CGUs with an independent reasonable possible increase of 1% in the pre-tax As of December 31, 2017, 2016 and 2015, except for the Operating Segment in Spain described above, in which CEMEX determined an impairment loss of goodwill in 2017, none of the other CEMEX’s sensitivity analyses resulted in a potential impairment risk in CEMEX’s operating segments. CEMEX continually monitors the evolution of the specific CGUs to which goodwill has been allocated that have presented relative goodwill impairment risk in any of the reported periods and, in the event that the relevant economic variables and the related cash flows projections would be negatively affected, it may result in a goodwill impairment loss in the future. As of December 31, 2017 and 2016, goodwill allocated to the United States accounted for approximately 78% and 79%, respectively, of CEMEX’s total amount of consolidated goodwill. In connection with CEMEX’s determination of value in use relative to its groups of CGUs in the United States in the reported periods, CEMEX has considered several factors, such as the historical performance of such operating segment, including the operating results in recent years, the long-term nature of CEMEX’s investment, the signs of recovery in the construction industry over the last years, the significant economic barriers for new potential competitors considering the high investment required, and the lack of susceptibility of the industry to technology improvements or alternate construction products, among other factors. CEMEX has also considered recent developments in its operations in the United States, such as the decrease in ready-mix ready-mix

Financial Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2017
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Financial Instruments	16) FINANCIAL INSTRUMENTS 16.1) SHORT-TERM AND LONG-TERM DEBT As of December 31, 2017 and 2016, CEMEX´s consolidated debt summarized by interest rates and currencies, was as follow: 2017 2016 Short-term Long-term Total Short-term Long-term Total Floating rate debt Ps 7,282 53,389 60,671 Ps 519 64,550 65,069 Fixed rate debt 9,691 123,633 133,324 703 170,466 171,169 Ps 16,973 177,022 193,995 Ps 1,222 235,016 236,238 Effective rate 1 Floating rate 6.1 % 3.0 % 9.7 % 4.4 % Fixed rate 4.8 % 5.7 % 4.4 % 6.5 % 2017 2016 Currency Short- Long- Total Effective 1 Short- Long- Total Effective 1 Dollars Ps 6,206 107,508 113,714 5.9 % Ps 114 179,675 179,789 6.3 % Euros 9,705 54,906 64,611 3.5 % 50 55,292 55,342 4.3 % Pounds — 9,141 9,141 2.6 % — — — — Philippine pesos — 5,408 5,408 4.6 % — — — — Pesos — — — — 648 — 648 4.4 % Other currencies 1,062 59 1,121 6.2 % 410 49 459 10.2 % Ps 16,973 177,022 193,995 Ps 1,222 235,016 236,238 1 In 2017 and 2016, represents the weighted average interest rate of the related debt agreements. As of December 31, 2017 and 2016, CEMEX´s consolidated debt summarized by type of instrument, was as follow: 2017 Short- Long- 2016 Short- Long- Bank loans Bank loans Loans in foreign countries, 2018 to 2022 Ps 910 5,439 Loans in foreign countries, 2017 to 2022 Ps 261 1,090 Syndicated loans, 2018 to 2020 — 50,132 Syndicated loans, 2017 to 2020 36 57,032 910 55,571 297 58,122 Notes payable Notes payable Notes payable in Mexico, 2018 — — Notes payable in Mexico, 2017 — 648 Medium-term notes, 2018 to 2026 224 133,949 Medium-term notes, 2017 to 2026 — 173,656 Other notes payable, 2018 to 2025 154 3,187 Other notes payable, 2017 to 2025 173 3,342 378 137,136 173 177,646 Total bank loans and notes payable 1,288 192,707 Total bank loans and notes payable 470 235,768 Current maturities 15,685 (15,685 ) Current maturities 752 (752 ) Ps 16,973 177,022 Ps 1,222 235,016 As of December 31, 2017 and 2016, discounts, fees and other direct costs incurred in the issuance of CEMEX’s outstanding notes payable and bank loans for US$84 and US$84, respectively, adjust the balance of notes payable and are amortized to financing expense over the maturity of the related debt instruments. Changes in consolidated debt for the years ended December 31, 2017, 2016 and 2015 were as follows: 2017 2016 2015 Debt at beginning of year Ps 236,238 229,343 205,834 Proceeds from new debt instruments 93,620 48,748 52,764 Debt repayments (128,411 ) (85,798 ) (64,237 ) Foreign currency translation and inflation effects (7,452 ) 43,945 34,982 Debt at end of year Ps 193,995 236,238 229,343 As of December 31, 2017 and 2016, as presented in the table above of debt by type of instrument, approximately 29% and 25%, respectively, of CEMEX’s total indebtedness, was represented by bank loans, of which the most significant portion corresponded to those balances under CEMEX’s facilities agreement entered into with 20 financial institutions on July 19, 2017 for an amount in different currencies equivalent to approximately US$4,050 at the origination date (the “2017 Credit Agreement”) which was mainly used to refinance the approximately US$3,680 outstanding under the facilities agreement dated September 29, 2014, as amended several times in 2015 and 2016 (the “2014 Credit Agreement”). In addition, as part of CEMEX’s currency diversification in its debt portfolio described in note 16.5, during 2017, CEMEX replaced debt denominated in dollars for US$280 pursuant to the negotiation of a bank loan denominated in Philippine pesos. In addition, as of December 31, 2017 and 2016, as presented in the table above of debt by type of instrument, approximately 71% and 75%, respectively, of CEMEX’s total indebtedness, was represented by notes payable, of which, the most significant portion was long-term in both periods. As of December 31, 2017 and 2016, CEMEX’s long-term notes payable are detailed as follows: Description Date of Issuer 1, 2 Currency Principal Rate 1 Maturity Date Repurchased US$ Outstanding 3 US$ 2017 2016 April 2026 Notes 8 16/Mar/16 CEMEX, S.A.B. de C.V. Dollar 1,000 7.75% 16/Apr/26 — 1,000 Ps 19,568 20,631 July 2025 Notes 02/Apr/03 CEMEX Materials LLC Dollar 150 7.70% 21/Jul/25 — 150 3,061 3,249 March 2025 Notes 03/Mar/15 CEMEX, S.A.B. de C.V. Dollar 750 6.125% 05/May/25 — 750 14,691 15,488 January 2025 Notes 11/Sep/14 CEMEX, S.A.B. de C.V. Dollar 1,100 5.70% 11/Jan/25 (29 ) 1,071 20,988 22,124 December 2024 4 05/Dec/17 CEMEX, S.A.B. de C.V. Euro 650 2.75% 05/Dec/24 — 780 15,257 — June 2024 Notes 8 14/Jun/16 CEMEX Finance LLC Euro 400 4.625% 15/Jun/24 — 480 9,390 8,665 April 2024 Notes 01/Apr/14 CEMEX Finance LLC Dollar 1,000 6.00% 01/Apr/24 (10 ) 990 18,924 19,886 March 2023 Notes 03/Mar/15 CEMEX, S.A.B. de C.V. Euro 550 4.375% 05/Mar/23 — 660 12,938 11,948 October 2022 5 , 8 12/Oct/12 CEMEX Finance LLC Dollar 1,500 9.375% 12/Oct/22 (1,500 ) — — 21,738 January 2022 Notes 5 11/Sep/14 CEMEX, S.A.B. de C.V. Euro 400 4.75% 11/Jan/22 — 480 9,434 8,696 April 2021 Notes 6 01/Apr/14 CEMEX Finance LLC Euro 400 5.25% 01/Apr/21 (447 ) — — 8,679 January 2021 7 , 8 02/Oct/13 CEMEX, S.A.B. de C.V. Dollar 1,000 7.25% 15/Jan/21 (659 ) 341 6,606 14,845 December 2019 5 , 7 , 8 12/Aug/13 CEMEX, S.A.B. de C.V. Dollar 1,000 6.50% 10/Dec/19 (1,000 ) — — 14,471 October 2018 Variable Notes 8 02/Oct/13 CEMEX, S.A.B. de C.V. Dollar 500 L+475bps 15/Oct/18 (187 ) 313 6,154 6,485 November 2017 Notes 30/Nov/07 CEMEX, S.A.B. de C.V. Peso 627 4.40% 17/Nov/17 (37 ) — — 648 Other notes payable 125 93 Ps 137,136 177,646 1 In all applicable cases the issuer refers to CEMEX España, S.A. acting through its Luxembourg Branch. The letter “L” included above refers to LIBOR, which represents the London Inter-Bank Offered Rate, variable rate used in international markets for debt denominated in U.S. dollars. As of December 31, 2017 and 2016, 3-Month 2 Unless otherwise indicated, all issuances are fully and unconditionally guaranteed by CEMEX, S.A.B. de C.V., CEMEX México, S.A. de C.V., CEMEX Concretos, S.A. de C.V., Empresas Tolteca de México, S.A. de C.V., New Sunward Holding B.V., CEMEX España, S.A., CEMEX Asia, B.V., CEMEX Corp., CEMEX Egyptian Investments, B.V., CEMEX Finance LLC, CEMEX France Gestion, (S.A.S.), CEMEX Research Group AG and CEMEX UK. CEMEX Egyptian Investments II, B.V. and CEMEX Shipping B.V. originally guaranteed the issuances listed above but were merged into CEMEX España, S.A. on October 3, 2016. 3 Presented net of all outstanding notes repurchased and held by CEMEX’s subsidiaries. 4 On December 5, 2017, CEMEX issued €650 of 2.75% senior secured notes due December 5, 2024 (the “December 2024 Notes”). The proceeds will be used to repay other indebtedness. 5 In connection with tender offers or the execution of call notice, as applicable, on December 10, 2017, CEMEX repurchased the outstanding amount of the December 2019 Notes for an aggregate principal amount of US$611; and on September 25, 2017, CEMEX repurchased US$701 aggregate principal amount of the October 2022 Notes. The notes of the holders that did not tender in the offer for US$343 were redeemed on October 12, 2017. In addition, on November 28, 2017, CEMEX announced its intention to redeem the total outstanding amount of the January 2022 Notes for an aggregate principal amount of €400 (US$480 or Ps9,432) that would be payable on January 10, 2018 and are presented as current maturities of long-term debt in the statement of financial position as of December 31, 2017 (note 26). 6 On May 31, 2017, by means of a tender offer for the April 2021 Notes, CEMEX redeemed the remaining €400 of aggregate principal amount of such notes. 7 On February 28, 2017, by means of a tender offer, CEMEX repurchased US$385 aggregate principal amount of the January 2021 Notes and US$90 of the December 2019 Notes. 8 During 2016, by means of tender offers, using available funds from the issuance of the April 2026 Notes, the June 2024 Notes, the sale of assets and cash flows provided by operating activities, CEMEX completed the purchase of US$739 principal amount of the October 2022 Notes, the purchase of US$178 principal amount of the October 2018 Variable Notes, the purchase of US$219 principal amount of the December 2019 Notes, and the purchase of US$242 principal amount of the January 2021 Notes. During 2017, 2016 and 2015, as a result of the debt transactions incurred including exchange offers and tender offers to replace and/or repurchase existing debt instruments, CEMEX paid combined premiums, fees and issuance costs for US$251 (Ps4,930), US$196 (Ps4,061) and US$61 (Ps1,047), respectively, of which US$212 (Ps4,160) in 2017, US$151 (Ps3,129) in 2016 and US$35 (Ps604) in 2015 are associated with the extinguished portion of the exchanged or repurchased notes and were recognized in the statement of operations in each year within “Financial expense”. In addition, US$39 (Ps770) in 2017, US$45 (Ps932) in 2016 and US$26 (Ps443) in 2015, corresponding to issuance costs of new debt and/or the portion of the combined premiums, fees and issuance costs treated as a refinancing of the old instruments by considering that: a) the relevant economic terms of the old and new notes were not substantially different; and b) the final holders of the new notes were the same of such portion of the old notes; adjusted the carrying amount of the new debt instruments, and are amortized over the remaining term of each instrument. Moreover, proportional fees and issuance costs related to the extinguished debt instruments for US$16 (Ps310) in 2017, US$37 (Ps767) in 2016 and US$31 (Ps541) in 2015 that were pending for amortization were recognized in the statement of operations of each year as part of “Financial expense.” The maturities of consolidated long-term debt as of December 31, 2017, were as follows: 2017 2019 Ps 30 2020 10,175 2021 26,948 2022 19,594 2023 and thereafter. 120,275 Ps 177,022 As of December 31, 2017, CEMEX had the following lines of credit, the majority of which are uncommitted, at annual interest rates ranging between 1.25% and 6.50%, depending on the negotiated currency: Lines of credit Available Other lines of credit in foreign subsidiaries Ps 9,506 7,237 Other lines of credit from banks 9,309 8,169 Ps 18,815 15,406 2017 Credit Agreement, 2014 Credit Agreement and Facilities Agreement As mentioned above, on July 19, 2017, the Parent Company and certain subsidiaries entered into the 2017 Credit Agreement with 20 financial institutions for an amount in different currencies equivalent to US$4,050 at the origination date, which proceeds were used to refinance in full the US$3,680 then outstanding under the 2014 Credit Agreement and other debt repayments, allowing CEMEX to increase the average life of its syndicated bank debt to approximately 4.3 years with a final maturity in July 2022. All tranches under the 2017 Credit Agreement have substantially the same terms, including an applicable margin over the benchmark interest rate of between 125 to 350 basis points, depending on CEMEX’s consolidated debt leverage ratio; and the tranches share the same guarantors and collateral package as the original tranches under the 2014 Credit Agreement and other secured debt obligations of CEMEX. As of December 31, 2017, total commitments under the 2017 Credit Agreement included US$2,746 (Ps53,959), €741 (US$889 or Ps17,469), £344 (US$465 or Ps9,137), out of which about US$1,135 (Ps22,303) were in a revolving credit facility. All tranches under the 2017 Credit Agreement amortize in five equal semi-annual payments beginning in July 2020, except for the commitments under the revolving credit which have a five-year maturity. The original proceeds from the 2014 Credit Agreement of US$1,350 were fully used to repay debt under the then existing facilities agreement entered into on September 17, 2012, as amended from time to time (the “Facilities Agreement”). On July 30, 2015, after several repayments under the Facilities Agreement using proceeds from other debt issuances, CEMEX repaid in full the then total amount outstanding of US$1,937 (Ps33,375) under the Facilities Agreement with additional funds from 21 financial institutions, which joined the 2014 Credit Agreement under new tranches, allowing CEMEX to increase the then average life of its syndicated bank debt to approximately 4 years as of such date. On November 30, 2016, CEMEX prepaid US$373 (Ps7,729) corresponding to the September 2017 amortization under the 2014 Credit Agreement and agreed with the lenders to exchange current funded commitments for US$664 maturing in 2018 into the revolving facility, maintaining their original amortization schedule and the same terms and conditions. As of December 31, 2016, total commitments under the 2014 Credit Agreement included US$2,826 (Ps58,555) and €746 (US$785 or Ps16,259), out of which about US$1,413 (Ps29,277) were in a revolving credit facility. Considering all commitments, the amortization profile was of US$783 in 2018, US$883 in 2019 and US$1,096 in 2020. All tranches under the 2017 Credit Agreement have substantially the same terms, including an applicable margin over LIBOR or EURIBOR, as applicable, of between 125 to 350 basis points, depending on the leverage ratio (as defined below) of CEMEX, as follows: Consolidated leverage ratio Applicable margin > = 5.50x 350 bps < 5.00x > 4.50x 300 bps < 4.50x > 4.00x 250 bps < 4.00x > 3.50x 212.5 bps < 3.50x > 3.00x 175 bps < 3.00x > 2.50x 150 bps < 2.50x 125 bps The 2017 Credit Agreement also modified the consolidated leverage ratio and consolidated coverage ratio limits as described below in the financial covenants section. For the years ended December 31, 2017 and 2016, under both the 2017 Credit Agreement and the 2014 Credit Agreement, CEMEX was required to comply with the following thresholds: (a) the aggregate amount allowed for capital expenditures cannot exceed US$1,000 per year excluding certain capital expenditures, and, joint venture investments and acquisitions by CHP and its subsidiaries and CLH and its subsidiaries, which capital expenditures, joint venture investments and acquisitions at any time then incurred are subject to a separate aggregate limit for each of CHP and CLH of US$500 (or its equivalent); and (b) the amounts allowed for permitted acquisitions and investments in joint ventures cannot exceed US$400 per year. Nonetheless, such limitations do not apply if capital expenditures or acquisitions do not exceed free cash flow generation, are funded with equity or asset disposals proceeds. The debt under the 2017 Credit Agreement and previously under the 2014 Credit Agreement is guaranteed by CEMEX México, S.A. de C.V., CEMEX Concretos, S.A. de C.V., Empresas Tolteca de México, S.A. de C.V., New Sunward Holding B.V., CEMEX España, S.A., CEMEX Asia, B.V., CEMEX Corp., CEMEX Egyptian Investments, B.V., CEMEX Finance LLC, CEMEX France Gestion, (S.A.S.), CEMEX Research Group AG and CEMEX UK. In addition, the debt under such agreements (together with all other senior capital markets debt issued or guaranteed by CEMEX, and certain other precedent facilities) is also secured by a first-priority security interest in: (a) substantially all the shares of CEMEX México, S.A. de C.V., CEMEX Operaciones México, S.A. de C.V, New Sunward Holding B.V., CEMEX Trademarks Holding Ltd. and CEMEX España, S.A. (the “Collateral”); and (b) all proceeds of such Collateral. CEMEX Egyptian Investments II, B.V. and CEMEX Shipping, B.V. originally guaranteed the 2014 Credit Agreement but were merged into CEMEX España, S.A. in October 2016. In addition to the restrictions mentioned above, and subject in each case to the permitted negotiated amounts and other exceptions, CEMEX is also subject to a number of negative covenants that, among other things, restrict or limit its ability to: (i) create liens; (ii) incur additional debt; (iii) change CEMEX’s business or the business of any obligor or material subsidiary (in each case, as defined in the 2017 Credit Agreement); (iv) enter into mergers; (v) enter into agreements that restrict its subsidiaries’ ability to pay dividends or repay intercompany debt; (vi) acquire assets; (vii) enter into or invest in joint venture agreements; (viii) dispose of certain assets; (ix) grant additional guarantees or indemnities; (x) declare or pay cash dividends or make share redemptions while the Leverage Ratio remains above 4.0 times; and (xi) enter into speculative derivatives transactions. The 2017 Credit Agreement contains a number of affirmative covenants that, among other things, require CEMEX to provide periodic financial information to its lenders. However, a number of those covenants and restrictions will automatically cease to apply or become less restrictive if CEMEX so elects when: (i) CEMEX’s Leverage Ratio (as defined hereinafter) for the two most recently completed quarterly testing periods is less than or equal to 3.75 times; and (ii) no default under the 2017 Credit Agreement is continuing. At that point the Leverage Ratio must not exceed 3.75 times. Restrictions that will cease to apply when CEMEX satisfies such conditions include the capital expenditure limitations mentioned above and several negative covenants, including limitations on CEMEX’s ability to declare or pay cash dividends and distributions to shareholders, limitations on CEMEX’s ability to repay existing financial indebtedness, certain asset sale restrictions, and restrictions on exercising call options in relation to any perpetual bonds CEMEX issues. At such time, several baskets and caps relating to negative covenants will also increase, including permitted financial indebtedness, permitted guarantees and limitations on liens. However, CEMEX cannot assure that it will be able to meet the conditions for these restrictions to cease to apply prior to the final maturity date under the 2017 Credit Agreement. In addition, the 2017 Credit Agreement, and previously the 2014 Credit Agreement, contains events of default, some of which may occur and are outside of CEMEX’s control such as expropriation, sequestration and availability of foreign exchange. As of December 31, 2017 and 2016, CEMEX was not aware of any event of default. CEMEX cannot assure that in the future it will be able to comply with the restrictive covenants and limitations contained in the 2017 Credit Agreement. CEMEX’s failure to comply with such covenants and limitations could result in an event of default, which could materially and adversely affect CEMEX’s business and financial condition. Financial Covenants The 2017 Credit Agreement and previously the 2014 Credit Agreement requires CEMEX the compliance with financial ratios, which mainly include: a) the consolidated ratio of debt to Operating EBITDA (the “Leverage Ratio”); and b) the consolidated ratio of Operating EBITDA to interest expense (the “Coverage Ratio”). These financial ratios are calculated according to the formulas established in the debt contracts using the consolidated amounts under IFRS. As of December 31, 2017, CEMEX must comply with a Coverage ratio and a Leverage ratio for each period of four consecutive fiscal quarters as follows: Period Coverage ratio Period Leverage ratio For the period ending on December 31, 2017 up to and including the period ending on March 31, 2020 > = 2.50 For the period ending on December 31, 2017 up to and including the period ending on March 31, 2018 < = 5.25 For the period ending on June 30, 2018 up to and including the period ending on September 30, 2018 < = 5.00 For the period ending on June 30, 2020 and each subsequent reference period > = 2.75 For the period ending on December 31, 2018 up to and including the period ending on March 31, 2019 < = 4.75 For the period ending on June 30, 2019 up to and including the period ending on March 31, 2020 < = 4.50 For the period ending on June 30, 2020 and each subsequent reference period < = 4.25 CEMEX’s ability to comply with these ratios may be affected by economic conditions and volatility in foreign exchange rates, as well as by overall conditions in the financial and capital markets. For the compliance periods ended as of December 31, 2017, 2016 and 2015, taking into account the 2017 Credit Agreement and the 2014 Credit Agreement, as applicable, CEMEX was in compliance with the financial covenants imposed by its debt contracts. The main consolidated financial ratios as of December 31, 2017, 2016 and 2015 were as follows: Consolidated financial ratios 2017 2016 2015 Leverage ratio 1, 2 Limit < = 5.25 < = 6.00 < = 6.00 Calculation 3.85 4.22 5.21 Coverage ratio 3 Limit > = 2.50 > = 1.85 > = 1.85 Calculation 3.46 3.18 2.61 1 The leverage ratio is calculated in pesos by dividing “Funded debt” by pro forma Operating EBITDA for the last twelve months as of the calculation date. Funded debt equals debt, as reported in the statement of financial position, excluding finance leases, components of liability of convertible subordinated notes, plus perpetual debentures and guarantees, plus or minus the fair value of derivative financial instruments, as applicable, among other adjustments. 2 Pro forma Operating EBITDA represents, all calculated in pesos, Operating EBITDA for the last twelve months as of the calculation date, plus the portion of Operating EBITDA referring to such twelve-month period of any significant acquisition made in the period before its consolidation in CEMEX, minus Operating EBITDA referring to such twelve-month period of any significant disposal that had already been liquidated. 3 The coverage ratio is calculated in pesos using the amounts from the financial statements, by dividing the pro forma Operating EBITDA by the financial expense for the last twelve months as of the calculation date. Financial expense includes interest accrued on the perpetual debentures. CEMEX will classify all of its outstanding debt as current debt in its statement of financial position if: 1) as of any measurement date CEMEX fails to comply with the aforementioned financial ratios; or 2) the cross default clause that is part of the 2017 Credit Agreement is triggered by the provisions contained therein; 3) as of any date prior to a subsequent measurement date CEMEX expects not to be in compliance with such financial ratios in the absence of: a) amendments and/or waivers covering the next succeeding 12 months; b) high probability that the violation will be cured during any agreed upon remediation period and be sustained for the next succeeding 12 months; and/or c) a signed refinancing agreement to refinance the relevant debt on a long-term basis. Moreover, concurrent with the aforementioned classification of debt in the short-term, the noncompliance of CEMEX with the financial ratios agreed upon pursuant to the 2017 Credit Agreement or, in such event, the absence of a waiver of compliance or a negotiation thereof, after certain procedures upon CEMEX’s lenders’ request, they would call for the acceleration of payments due under the 2017 Credit Agreement. That scenario will have a material adverse effect on CEMEX’s liquidity, capital resources and financial position. 16.2) OTHER FINANCIAL OBLIGATIONS As of December 31, 2017 and 2016, other financial obligations in the consolidated statement of financial position are detailed as follows: 2017 2016 Short-term Long-term Total Short-term Long-term Total I. Convertible subordinated notes due 2020 Ps — 9,985 9,985 Ps — 10,417 10,417 II. Convertible subordinated notes due 2018 7,115 — 7,115 — 13,575 13,575 III. Mandatorily convertible securities 2019 323 371 694 278 689 967 IV. Liabilities secured with accounts receivable 11,313 — 11,313 11,095 — 11,095 V. Finance leases 611 2,503 3,114 285 1,291 1,576 Ps 19,362 12,859 32,221 Ps 11,658 25,972 37,630 Financial instruments convertible into CEMEX’s shares contain components of liability and equity, which are recognized differently depending upon the currency in which the instrument is denominated and the functional currency of the issuer (note 2.6). I. Optional convertible subordinated notes due 2020 During 2015, the Parent Company issued US$521 aggregate principal amount of 3.72% convertible subordinated notes due in March 2020 (the “2020 Convertible Notes”). The 2020 Convertible Notes were issued: a) US$200 as a result of the exercise in March 13, 2015 of US$200 notional amount of Contingent Convertible Units (“CCUs”) (described below), and b) US$321 as a result of the exchange with certain investors in May 2015, which together with early conversions, resulted in settlement of US$626 aggregate principal amount of 3.25% convertible subordinated notes due in 2016 (the “2016 Convertible Notes”) held by such investors and the issuance and delivery by the Parent Company of an estimated 42 million ADSs, which included a number of additional ADSs issued to the holders as non-cash In October 2014, in connection with US$204 remaining principal amount of 4.875% Optional Convertible Subordinated Notes due in March 2015 (the “2015 Convertible Notes”), the Parent Company issued US$200 notional amount of CCUs at an annual rate of 3.0% on the notional amount, by means of which, in exchange for coupon payments, CEMEX secured the refinancing for any of the 2015 Convertible Notes that would mature without conversion up to US$200 of the principal amount. Pursuant to the CCUs, holders invested the US$200 in U.S. treasury bonds, and irrevocably agreed to apply such investment in March 2015, if necessary, to subscribe new convertible notes of the Parent Company for up to US$200. In March 2015, CEMEX exercised the CCUs, issued US$200 principal amount of the 2020 Convertible Notes to the holders of the CCUs and repaid the US$204 remaining principal amount of the 2015 Convertible Notes. II. Optional convertible subordinated notes due in 2016 and 2018 On March 15, 2011, the Parent Company closed the offering of US$978 principal amount of the 2016 Convertible Notes and US$690 principal amount of 3.75% convertible subordinated notes due in 2018 (the “2018 Convertible Notes”). The notes were subordinated to all of CEMEX’s liabilities and commitments. The notes are convertible into a fixed number of the Parent Company’s ADSs and are subject to antidilution adjustments. After the exchange of notes described in the paragraph above, the US$352 of the 2016 Convertible Notes that remained outstanding, were repaid in cash at their maturity on March 15, 2016. On June 19, 2017, the Parent Company agreed with certain institutional holders the early conversion of US$325 of the 2018 Convertible Notes in exchange for the issuance of approximately 43 million ADSs, which included the number of additional ADSs issued to the holders as non-cash paid-in III. Mandatorily convertible securities due in 2019 In December 2009, the Parent Company exchanged debt into US$315 principal amount of 10% mandatorily convertible securities in pesos with maturity in 2019 (the “2019 Mandatorily Convertible Securities”). Reflecting antidilution adjustments, the notes will be converted at maturity or earlier if the price of the CPO reaches Ps26.22 into approximately 236 million CPOs at a conversion price of Ps17.48 per CPO. Holders have an option to voluntarily convert their securities on any interest payment date into CPOs. The conversion option embedded in these securities is treated as a stand-alone derivative liability at fair value through the statement of operations (note 16.4). IV. Liabilities secured with accounts receivable As mentioned in note 9, as of December 31, 2017 and 2016, in connection with trade receivables sold under CEMEX’s outstanding programs, the funded amounts of such receivables sold are recognized in “Other financial obligations” in the statement of financial position. V. Finance leases CEMEX has several operating and administrative assets, including buildings and mobile equipment, under finance lease contracts. Future payments associated with these contracts are presented in note 23.5. 16.3) FAIR VALUE OF FINANCIAL INSTRUMENTS Financial assets and liabilities The carrying amounts of cash, trade accounts receivable, other accounts receivable, trade accounts payable, other accounts payable and accrued expenses, as well as short-term debt, approximate their corresponding estimated fair values due to the short-term maturity and revolving nature of these financial assets and liabilities. Cash equivalents and certain long-term investments are recognized at fair value, considering to the extent available, quoted market prices for the same or similar instruments. The estimated fair value of CEMEX´s long-term debt is level 2, and is either based on estimated market prices for such or similar instruments, considering interest rates currently available for CEMEX to negotiate debt with the same maturities, or determined by discounting future cash flows using market-based interest rates currently available to CEMEX. As of December 31, 2017 and 2016, the carrying amounts of financial assets and liabilities and their respective fair values were as follows: 2017 2016 Carrying Fair value Carrying Fair value Financial assets Derivative instruments (notes 13.2 and 16.4) Ps 794 794 Ps 1,900 1,900 Other investments and non-current 4,964 4,964 5,220 5,220 Ps 5,758 5,758 Ps 7,120 7,120 Financial liabilities Long-term debt (note 16.1) Ps 177,022 184,220 Ps 235,016 241,968 Other financial obligations (note 16.2) 12,859 13,381 25,972 27,419 Derivative instruments (notes 16.4 and 17) 402 402 818 818 Ps 190,283 198,003 Ps 261,806 270,205 Fair Value Hierarchy As of December 31, 2017 and 2016, assets and liabilities carried at fair value in the consolidated statements of financial position are included in the following fair value hierarchy categories: 2017 Level 1 Level 2 Level 3 Total Assets measured at fair value Derivative instruments (notes 13.2 and 16.4) Ps — 794 — 794 Investments available-for-sale 275 — — 275 Investments held for trading (note 13.2) — 77 — 77 Ps 275 871 — 1,146 Liabilities measured at fair value Derivative instruments (notes 16.4 and 17) Ps — 402 — 402 2016 Level 1 Level 2 Level 3 Total Assets measured at fair value Derivative instruments (notes 13.2 and 16.4) Ps — 1,900 — 1,900 Investments available-for-sale 491 — — 491 Investments held for trading (note 13.2) — 157 — 157 Ps 491 2,057 — 2,548 Liabilities measured at fair value Derivative instruments (notes 16.4 and 17) Ps — 818 — 818 16.4) DERIVATIVE FINANCIAL INSTRUMENTS During the reported periods, in compliance with the guidelines established by its Risk Management Committee, the restrictions set forth by its debt agreements and its hedging strategy (note 16.5), CEMEX held derivative instruments, with the objectives of, as the case may be of: a) changing the risk profile or fixed the price of fuels and electric energy; b) foreign exchange hedging; c) hedge of forecasted transactions; and d) other corporate purposes. As of December 31, 2017 and 2016, the notional amounts and fair values of CEMEX’s derivative instruments were as follows: 2017 2016 (U.S. dollars millions) Notional Fair value Notional Fair value I. Net investment hedge US$ 1,160 47 — — II. Foreign exchange forwards related to forecasted transactions 381 3 80 — III. Equity forwards on third party shares 168 7 — — IV. Interest rate swaps 137 16 147 23 V. Fuels price hedging 72 20 77 15 VI. 2019 Mandatorily Convertible Securities and options on the Parent Company’s own shares — (20 ) 576 26 US$ 1,918 73 880 64 The fair values determined by CEMEX for its derivative financial instruments are Level 2. There is no direct measure for the risk of CEMEX or its counterparties in connection with the derivative instruments. Therefore, the risk factors applied for CEMEX’s assets and liabilities originated by the valuation of such derivatives were extrapolated from publicly available risk discounts for other public debt instruments of CEMEX and its counterparties. The caption “Financial income and other items, net” includes gains and losses related to the recognition of changes in fair values of the derivative instruments during the applicable period and that represented net gains of US$9 (Ps161) in 2017, net gains of US$17 (Ps317) in 2016 and net losses of US$173 (Ps2,981) in 2015, respectively. The estimated fair value of derivative instruments fluctuates over time and is determined by measuring the effect of future relevant economic variables according to the yield curves shown in the market as of the reporting date. These values should be analyzed in relation to the fair values of the underlying transactions and as part of CEMEX’s overall exposure attributable to fluctuations in interest r

Other Current and Non-current L

Other Current and Non-current Liabilities	12 Months Ended
	Dec. 31, 2017
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Other Current and Non-current Liabilities	17) OTHER CURRENT AND NON-CURRENT As of December 31, 2017 and 2016, consolidated other current liabilities were as follows: 2017 2016 Provisions 1 Ps 12,667 11,716 Interest payable 2,496 3,425 Advances from customers 3,886 3,413 Other accounts payable and accrued expenses 2 5,238 3,976 Ps 24,287 22,530 1 Current provisions primarily consist of accrued employee benefits, insurance payments, accruals for legal assessments and others. These amounts are revolving in nature and are expected to be settled and replaced by similar amounts within the next 12 months. 2 In 2017, includes an account payable in Colombian pesos equivalent to Ps491 (US$25) to be settled on January 5, 2018 related to a penalty imposed by the Commerce and Industry Superintendence in Colombia in connection with a market investigation (note 24.2). As of December 31, 2017 and 2016, consolidated other non-current 2017 2016 Asset retirement obligations 1 Ps 7,906 8,237 Accruals for legal assessments and other responsibilities 2 1,599 1,514 Non-current 402 818 Environmental liabilities 3 991 1,172 Other non-current 4 4,751 5,305 Ps 15,649 17,046 1 Provisions for asset retirement include future estimated costs for demolition, cleaning and reforestation of production sites at the end of their operation, which are initially recognized against the related assets and are depreciated over their estimated useful life. 2 Provisions for legal claims and other responsibilities include items related to tax contingencies. 3 Environmental liabilities include future estimated costs arising from legal or constructive obligations, related to cleaning, reforestation and other remedial actions to remediate damage caused to the environment. The expected average period to settle these obligations is greater than 15 years. 4 As of December 31, 2017 and 2016, includes Ps1,498 and Ps2,300, respectively, of the non-current Changes in consolidated other current and non-current 2017 Asset Environmental Accruals for Valuation of Other Total 2016 Balance at beginning of period Ps 8,237 1,172 1,514 823 17,016 28,762 25,611 Business combinations — — — — 345 345 — Additions or increase in estimates 573 21 701 214 39,545 41,054 67,684 Releases or decrease in estimates (527 ) (54 ) (289 ) (306 ) (40,524 ) (41,700 ) (61,362 ) Reclassifications — (182 ) 530 — (1,462 ) (1,114 ) (741 ) Accretion expense (191 ) — — — (830 ) (1,021 ) (1,042 ) Foreign currency translation (186 ) 34 (857 ) (310 ) 3,309 1,990 (1,388 ) Balance at end of period Ps 7,906 991 1,599 421 17,399 28,316 28,762 Out of which: Current provisions Ps — — — 19 12,648 12,667 11,716

Pensions and Post-Employment Be

Pensions and Post-Employment Benefits	12 Months Ended
	Dec. 31, 2017
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Pensions and Post-Employment Benefits	18) PENSIONS AND POST-EMPLOYMENT BENEFITS Defined contribution pension plans The consolidated costs of defined contribution plans for the years ended December 31, 2017, 2016 and 2015 were Ps922, Ps865 and Ps706, respectively. CEMEX contributes periodically the amounts offered by the pension plan to the employee’s individual accounts, not retaining any remaining liability as of the financial statements´ date. Defined benefit pension plans Most CEMEX’s defined benefit plans have been closed to new participants for several years. Actuarial results related to pension and other post retirement benefits are recognized in the results and/or in “Other comprehensive income” for the period in which they are generated, as correspond. For the years ended December 31, 2017, 2016 and 2015, the effects of pension plans and other post-employment benefits are summarized as follows: Pensions Other benefits Total Net period cost (income): 2017 2016 2015 2017 2016 2015 2017 2016 2015 Recorded in operating costs and expenses Service cost Ps 221 151 128 33 25 30 254 176 158 Past service cost (55 ) 8 12 — — (20 ) (55 ) 8 (8 ) Loss for settlements and curtailments — — — — — (13 ) — — (13 ) 166 159 140 33 25 (3 ) 199 184 137 Recorded in other financial expenses Net interest cost 693 711 596 74 57 56 767 768 652 Recorded in other comprehensive income Actuarial (gains) losses for the period 20 3,985 872 (23 ) 34 (124 ) (3 ) 4,019 748 Ps 879 4,855 1,608 84 116 (71 ) 963 4,971 1,537 The reconciliations of the actuarial benefits obligations, pension plan assets, and liabilities recognized in the statement of financial position as of December 31, 2017 and 2016 are presented as follows: Pensions Other benefits Total 2017 2016 2017 2016 2017 2016 Change in benefits obligation: Projected benefit obligation at beginning of the period Ps 51,055 42,740 1,164 1,100 52,219 43,840 Service cost 221 151 33 25 254 176 Interest cost 1,625 1,685 76 59 1,701 1,744 Actuarial (gains) losses 727 6,263 (24 ) 35 703 6,298 Additions through business combinations 2,801 — 271 — 3,072 — Settlements and curtailments — — — (19 ) — (19 ) Plan amendments 15 8 — — 15 8 Benefits paid (2,920 ) (2,379 ) (81 ) (74 ) (3,001 ) (2,453 ) Foreign currency translation 1,386 2,587 (3 ) 38 1,383 2,625 Projected benefit obligation at end of the period 54,910 51,055 1,436 1,164 56,346 52,219 Change in plan assets: Fair value of plan assets at beginning of the period 28,828 25,547 26 24 28,854 25,571 Return on plan assets 932 974 2 2 934 976 Actuarial (gains) losses for the period 707 2,278 (1 ) 1 706 2,279 Employer contributions 1,494 1,289 81 93 1,575 1,382 Additions through business combinations 2,841 — — — 2,841 — Reduction for disposal of assets (4 ) — — — (4 ) — Settlements and curtailments — — — (19 ) — (19 ) Benefits paid (2,920 ) (2,379 ) (81 ) (74 ) (3,001 ) (2,453 ) Foreign currency translation 787 1,119 1 (1 ) 788 1,118 Fair value of plan assets at end of the period 32,665 28,828 28 26 32,693 28,854 Amounts recognized in the statements of financial position: Net projected liability recognized in the statement of financial position Ps 22,245 22,227 1,408 1,138 23,653 23,365 For the years 2017, 2016 and 2015, actuarial (gains) losses for the period were generated by the following main factors as follows: 2017 2016 2015 Actuarial (gains) losses due to experience Ps 121 (511 ) (105 ) Actuarial (gains) losses due to demographic assumptions (46 ) (231 ) (153 ) Actuarial (gains) losses due financial assumptions (78 ) 4,761 1,006 Ps (3 ) 4,019 748 In 2017, net actuarial gains due to financial assumptions were mainly driven by an increase in the discount rates applicable to the benefits’ obligations in Germany and Mexico and by actual returns higher than estimated in the United States, partially offset by a decrease in the discount rate in the United Kingdom. Net actuarial losses due to financial assumptions during 2016 were mainly generated by a significant reduction compared to 2015 in the discount rates applicable to the benefit obligations in the United Kingdom, Germany and other European countries, considering macroeconomic and political uncertainty, partially offset by an increase in the discount rate in Mexico. These actuarial losses originated by the reduction in the discount rates in 2016 were also partially offset by actual returns higher than estimated in some of the plan assets related to CEMEX’s defined benefit plans. During 2015, discounts rates increased slightly or remained flat as compared to 2014, but the resulting actuarial gains were offset and reversed by actuarial losses generated by actual returns lower than estimated in certain of CEMEX’s plan assets. As of December 31, 2017 and 2016, plan assets were measured at their estimated fair value and, based on the hierarchy of fair values, are detailed as follows: 2017 2016 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Cash Ps 579 — 111 690 Ps 1,075 1,024 — 2,099 Investments in corporate bonds 144 6,067 1 6,212 1,050 2,617 — 3,667 Investments in government bonds 1,701 9,407 — 11,108 209 10,081 — 10,290 Total fixed-income securities 2,424 15,474 112 18,010 2,334 13,722 — 16,056 Investment in marketable securities 6,212 1,735 — 7,947 2,001 5,956 — 7,957 Other investments and private funds 991 3,279 2,466 6,736 770 3,478 593 4,841 Total variable-income securities 7,203 5,014 2,466 14,683 2,771 9,434 593 12,798 Total plan assets Ps 9,627 20,488 2,578 32,693 Ps 5,105 23,156 593 28,854 As of December 31, 2017, estimated payments for pensions and other post-employment benefits over the next 10 years were as follows: 2017 2018 Ps 3,071 2019 2,952 2020 3,085 2021 3,080 2022 3,121 2023 – 2027 15,868 The most significant assumptions used in the determination of the benefit obligation were as follows: 2017 2016 Mexico United United Range of rates in Mexico United United Rates ranges in Discount rates 9.3 % 3.9 % 2.4 % 1.3% – 6.3% 9.0 % 4.2 % 2.6 % 1.1% – 7.0% Rate of return on plan assets 9.3 % 3.9 % 2.4 % 1.3% – 6.3% 9.0 % 4.2 % 2.6 % 1.1% – 7.0% Rate of salary increases 4.0 % — 3.2 % 1.5% – 6.0% 4.0 % — 3.3 % 1.5% – 6.0% As of December 31, 2017 and 2016, the aggregate projected benefit obligation (“PBO”) for pension plans and other post-employment benefits and the plan assets by country were as follows: 2017 2016 PBO Assets Deficit PBO Assets Deficit Mexico Ps 3,213 840 2,373 Ps 3,247 824 2,423 United States 6,378 4,031 2,347 7,110 4,192 2,918 United Kingdom 35,602 23,145 12,457 33,925 22,154 11,771 Germany 4,362 213 4,149 4,429 227 4,202 Other countries 6,791 4,464 2,327 3,508 1,457 2,051 Ps 56,346 32,693 23,653 Ps 52,219 28,854 23,365 Applicable regulation in the United Kingdom requires entities to maintain plan assets at a level similar to that of the obligations. In November 2012, in order to better manage CEMEX’s obligations under its defined benefit pension schemes and future cash funding requirements thereof, CEMEX implemented an asset backed pension funding arrangement in its operations in the United Kingdom by means of which CEMEX transferred certain operating assets to a non-transferable In some countries, CEMEX has established health care benefits for retired personnel limited to a certain number of years after retirement. As of December 31, 2017 and 2016, the projected benefits obligation related to these benefits was Ps1,080 and Ps837, respectively. The medical inflation rates used to determine the projected benefits obligation of these benefits in 2017 and 2016 for Mexico were 7.0% and 7.0%, respectively, for Puerto Rico 6.9% and 4.3%, respectively, and for the United Kingdom were 6.7% and 6.8%, respectively. In connection with TCL’s consolidation (note 4.1), CEMEX integrated TCL’s health care benefits to its operations. For 2017, the medical inflation rate used to determine the projected benefits obligation was 5.0%. Significant events related to employees’ pension benefits and other post-employment benefits during the reported periods During 2017, CEMEX in Spain removed certain increases in pensions benefits which resulted in an adjustment to past service cost generating gains of Ps99 (US$5) in 2017, recognized in the income statement for the year. In addition, due to the acquisition of TCL’s (note 4.1), CEMEX integrated its pensions plans, which were fully funded, as well as TCL’s health care benefits which represented an increase in the net projected liability of Ps271 (US$14). During 2015, CEMEX in the United States terminated the retiree medical coverage for certain participants not yet retired. In addition, during 2014, CEMEX in the United States terminated the retiree medical and life insurance coverage for most new retirees, and changed the existing retirees program effective January 1, 2015, where participants will cease their current plans and instead receive a Health Reimbursement Account (HRA) contribution, if they become eligible. These curtailment events resulted in an adjustment to past service cost which generated gains of Ps13 (US$1) in 2015, recognized immediately through the benefit cost of the respective period. Sensitivity analysis of pension and other post-employment benefits For the year ended December 31, 2017, CEMEX performed sensitivity analyses on the most significant assumptions that affect the PBO, considering reasonable independent changes of plus or minus 50 basis points in each of these assumptions. The increase (decrease) that would have resulted in the PBO of pensions and other post-employment benefits as of December 31, 2017 are shown below: Pensions Other benefits Total +50 bps -50 bps +50 bps -50 bps +50 bps -50 bps Assumptions: Discount Rate Sensitivity Ps (4,028 ) 4,426 (72 ) 83 (4,100 ) 4,509 Salary Increase Rate Sensitivity 154 (138 ) 34 (29 ) 189 (166 ) Pension Increase Rate Sensitivity 2,341 (2,209 ) — — 2,341 (2,209 )

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
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Income Taxes	19) INCOME TAXES 19.1) INCOME TAXES FOR THE PERIOD The amounts of income tax revenue (expense) in the statements of operations for 2017, 2016 and 2015 are summarized as follows: 2017 2016 2015 Current income taxes Ps (3,458 ) (3,456 ) 6,121 Deferred income taxes 2,938 331 (8,489 ) Ps (520 ) (3,125 ) (2,368 ) 19.2) DEFERRED INCOME TAXES As of December 31, 2017 and 2016, the main temporary differences that generated the consolidated deferred income tax assets and liabilities are presented below: 2017 2016 Deferred tax assets: Tax loss carryforwards and other tax credits Ps 15,900 17,514 Accounts payable and accrued expenses 7,083 9,262 Intangible assets and deferred charges, net 4,175 6,358 Others — 411 Total deferred tax assets, net 27,158 33,545 Deferred tax liabilities: Property, machinery and equipment (27,268 ) (35,095 ) Investments and other assets (874 ) (2,012 ) Total deferred tax liabilities, net (28,142 ) (37,107 ) Net deferred tax liabilities Ps (984 ) (3,562 ) Out of which: Net deferred tax (liability) asset in Mexican entities Ps (3,644 ) (2,509 ) Net deferred tax (liability) asset in Foreign entities Ps 2,660 (1,053 ) The breakdown of changes in consolidated deferred income taxes during 2017, 2016 and 2015 were as follows: 2017 2016 2015 Deferred income tax (charged) credited to the income statement 1 Ps 2,938 331 (8,489 ) Deferred income tax (charged) credited to stockholders’ equity 200 514 1,089 Reclassification to other captions in the statement of financial position and in the income statement 2 (560 ) 531 (5,467 ) Change in deferred income tax during the period Ps 2,578 1,376 (12,867 ) 1 In 2017, includes a net income tax revenue related to the recognition of deferred income tax assets in CEMEX’s operations in the United States (note 19.4). 2 In 2017, 2016 and 2015, includes the effects of discontinued operations (note 4.2) and in 2015 the effects of the termination of tax consolidation regime in Mexico. Current and/or deferred income tax relative to items of other comprehensive income during 2017, 2016 and 2015 were as follows: 2017 2016 2015 Tax effects relative to foreign exchange fluctuations from debt (note 20.2) Ps — (410 ) (272 ) Tax effects relative to foreign exchange fluctuations from intercompany balances (note 20.2) 32 (12 ) (181 ) Tax effects relative to actuarial (gains) and losses (note 20.2) (1 ) 788 183 Foreign currency translation and other effects 201 (274 ) 906 Ps 232 92 636 For the recognition of deferred tax assets, CEMEX analyzes the aggregate amount of self-determined tax loss carryforwards included in its income tax returns in each country where CEMEX believes, based on available evidence, that the tax authorities would not reject such tax loss carryforwards; and the likelihood of the recoverability of such tax loss carryforwards prior to their expiration through an analysis of estimated future taxable income. If CEMEX believes that it is probable that the tax authorities would reject a self-determined deferred tax asset, it would decrease such asset. Likewise, if CEMEX believes that it would not be able to use a tax loss carryforward before its expiration or any other tax asset, CEMEX would not recognize such asset. Both situations would result in additional income tax expense for the period in which such determination is made. In order to determine whether it is probable that deferred tax assets will ultimately be realized, CEMEX takes into consideration all available positive and negative evidence, including factors such as market conditions, industry analysis, expansion plans, projected taxable income, carryforward periods, current tax structure, potential changes or adjustments in tax structure, tax planning strategies and future reversals of existing temporary differences. In addition, every reporting period, CEMEX analyzes its actual results versus its estimates, and adjusts, as necessary, its tax asset valuations. If actual results vary from CEMEX’s estimates, the deferred tax asset may be affected and necessary adjustments will be made based on relevant information, any adjustments recorded will affect CEMEX’s statements of operations in such period. As of December 31, 2017, consolidated tax loss and tax credits carryforwards expire as follows: Amount of Amount of Amount of 2018 Ps 1,099 415 684 2019 5,989 5,149 840 2020 8,929 8,115 814 2021 4,407 2,908 1,499 2022 and thereafter 288,466 230,425 58,041 Ps 308,890 247,012 61,878 As of December 31, 2017, in connection with CEMEX’s deferred tax loss carryforwards presented in the table above, in order to realize the benefits associated with such deferred tax assets that have not been reserved, before their expiration, CEMEX would need to generate Ps61,878 in consolidated pre-tax CEMEX does not recognize a deferred income tax liability related to its investments in subsidiaries considering that CEMEX controls the reversal of the temporary differences arising from these investments and management is satisfied that such temporary differences will not reverse in the foreseeable future. 19.3) RECONCILIATION OF EFFECTIVE INCOME TAX RATE For the years ended December 31, 2017, 2016 and 2015, the effective consolidated income tax rates were as follows: 2017 2016 2015 Income before income tax Ps 13,659 17,563 3,464 Income tax expense (520 ) (3,125 ) (2,368 ) Effective consolidated income tax rate 1 (3.8 )% (17.8 )% (68.4 )% 1 The average effective tax rate equals the net amount of income tax revenue or expense divided by income or loss before income taxes, as these line items are reported in the income statement. Differences between the financial reporting and the corresponding tax basis of assets and liabilities and the different income tax rates and laws applicable to CEMEX, among other factors, give rise to permanent differences between the statutory tax rate applicable in Mexico, and the effective tax rate presented in the consolidated statements of operations, which in 2017, 2016 and 2015 were as follows: 2017 2016 2015 % Ps % Ps % Ps Mexican statutory tax rate (30.0 ) (4,098 ) (30.0 ) (5,269 ) (30.0 ) (1,039 ) Non-taxable 0.1 14 0.2 32 37.0 1,280 Difference between accounting and tax expenses, net (20.9 ) (2,855 ) 82.6 14,507 (84.3 ) (2,919 ) Termination of the income tax consolidation regime in Mexico — — — — 32.8 1,136 Unrecognized effects during the year related to applicable tax consolidation regimes 0.9 123 (3.6 ) (632 ) 8.5 293 Non-taxable 15.0 2,049 3.7 650 36.5 1,263 Difference between book and tax inflation (31.2 ) (4,261 ) (11.0 ) (1,932 ) (26.6 ) (922 ) Differences in the income tax rates in the countries where CEMEX operates 1 21.9 2,991 11.0 1,932 48.9 1,693 Changes in deferred tax assets 2 39.8 5,433 (70.1 ) (12,320 ) (100.3 ) (3,473 ) Changes in provisions for uncertain tax positions (0.4 ) (55 ) 0.7 123 7.9 272 Others 1.0 139 (1.3 ) (216 ) 1.2 48 Effective consolidated tax rate (3.8 ) (520 ) (17.8 ) (3,125 ) (68.4 ) (2,368 ) 1 Refers mainly to the effects of the differences between the statutory income tax rate in Mexico of 30% against the applicable income tax rates of each country where CEMEX operates. In 2017, includes the effect related to the change in statutory tax rate in the United States (note 19.4). 2 Refers to the effects in the effective income tax rate associated with changes during the period in the amount of deferred income tax assets related to CEMEX’s tax loss carryforwards. The following table compares variations between the line item “Changes in deferred tax assets” as presented in the table above against the changes in deferred tax assets in the statement of financial position for the years ended December 31, 2017 and 2016: 2017 2016 Changes in the Amounts in Changes in the Amounts in Tax loss carryforwards generated and not recognized during the year Ps — 6,092 — (9,108 ) Derecognition related to tax loss carryforwards recognized in prior years (5,221 ) (5,221 ) (4,843 ) (4,843 ) Recognition related to unrecognized tax loss carryforwards 9,694 9,694 1,631 1,631 Foreign currency translation and other effects (6,087 ) (5,132 ) 4,068 — Changes in deferred tax assets Ps (1,614 ) 5,433 856 (12,320 ) 19.4) UNCERTAIN TAX POSITIONS AND SIGNIFICANT TAX PROCEEDINGS As of December 31, 2017 and 2016, as part of short-term and long-term provisions and other liabilities (note 17), CEMEX has recognized provisions related to unrecognized tax benefits in connection with uncertain tax positions taken, in which it is deemed probable that the tax authority would differ from the position adopted by CEMEX. As of December 31, 2017, the tax returns submitted by some subsidiaries of CEMEX located in several countries are under review by the respective tax authorities in the ordinary course of business. CEMEX cannot anticipate if such reviews will result in new tax assessments, which would, should any arise, be appropriately disclosed and/or recognized in the financial statements. A summary of the beginning and ending amount of unrecognized tax benefits for the years ended December 31, 2017, 2016 and 2015, excluding interest and penalties, is as follows: 2017 2016 2015 Balance of tax positions at beginning of the period Ps 1,132 1,190 1,396 Additions for tax positions of prior periods 663 200 134 Additions for tax positions of current period 16 90 71 Reductions for tax positions related to prior periods and other items (32 ) (131 ) (95 ) Settlements and reclassifications (119 ) (163 ) (204 ) Expiration of the statute of limitations (138 ) (126 ) (231 ) Foreign currency translation effects 49 72 119 Balance of tax positions at end of the period Ps 1,571 1,132 1,190 During 2017, considering recoverability analyses and cash flow projections, CEMEX recognized deferred income tax assets related to its operations in the United States for US$700 considering the then applicable income tax rate of 35%. However, regarding the Tax Cuts and Jobs Act (the “Act”) enacted on December 22, 2017, the U.S. statutory federal tax rate was reduced from 35% to 21%. For this reason, CEMEX reduced its net deferred tax assets by US$124. The reduction in the U.S. statutory federal tax rate is expected to positively impact CEMEX’s future after-tax Tax examinations can involve complex issues, and the resolution of issues may span multiple years, particularly if subject to negotiation or litigation. Although CEMEX believes its estimates of the total unrecognized tax benefits are reasonable, uncertainties regarding the final determination of income tax audit settlements and any related litigation could affect the amount of total unrecognized tax benefits in future periods. It is difficult to estimate the timing and range of possible changes related to the uncertain tax positions, as finalizing audits with the income tax authorities may involve formal administrative and legal proceedings. Accordingly, it is not possible to reasonably estimate the expected changes to the total unrecognized tax benefits over the next 12 months, although any settlements or statute of limitations expirations may result in a significant increase or decrease in the total unrecognized tax benefits, including those positions related to tax examinations being currently conducted. As of December 31, 2017, the Company’s most significant tax proceedings are as follows: • As part of an audit process, the tax authorities in Spain have challenged part of the tax loss carryforwards reported by CEMEX España covering the tax years from and including 2006 to 2009. During 2014, the tax authorities in Spain notified CEMEX España of fines in the aggregate amount of US$547 (Ps10,755). CEMEX España filed appeals against such resolution. On September 20, 2017, CEMEX España was notified about an adverse resolution to such appeals. CEMEX España challenged this decision and applied for the suspension of the payment before the National Court ( Audiencia Nacional • In December 2013, the Mexican Congress approved amendments to the income tax law effective January 1, 2014, which eliminated the tax consolidation regime. A period of up to 10 years was established for the settlement of any liability for income taxes related to the tax consolidation regime accrued until December 31, 2013, amount which considering the rules issued for the disconnection of the tax consolidation regime amounted to Ps24,804. In October 2015, a new tax reform approved by the Mexican Congress (the “new tax reform”) granted entities the option to settle a portion of the liability for the exit of the tax consolidation regime using available tax loss carryforwards of the previously consolidated entities, considering a discount factor, and a tax credit to offset certain items of the aforementioned liability. Consequently, as a result of payments made during 2014 and 2015, the liability was further reduced to Ps16,244, which after the application of the tax credit and tax loss carryforwards (as provided by the new tax reform) which had a book value for CEMEX before discount of Ps11,136, as of December 31, 2015, the Parent Company’s liability was reduced to Ps3,971. As of December 31, 2017 and 2016, considering payments made during these years net of inflation adjustments, CEMEX reduced the balance payable to Ps2,456 and Ps3,236, respectively. • In April 2011, the Colombian Tax Authority (“Dirección de Impuestos”) notified CEMEX Colombia of a special proceeding rejecting certain deductions taken by CEMEX Colombia in its 2009 tax return considering they are not linked to direct revenues recorded in the same fiscal year, and assessed an increase in taxes to be paid by CEMEX Colombia in an amount in Colombian pesos equivalent to US$30 (Ps593) and imposed a penalty in an amount in Colombian pesos equivalent to US$48 (Ps948), both as of December 31, 2017. After several appeals of CEMEX Colombia to the Colombian Tax Authority’s special proceeding in the applicable courts in which CEMEX Colombia obtained negative resolutions in each case over the years, in July 2014, CEMEX Colombia filed an appeal against this resolution before the Colombian State Council ( Consejo de Estado)

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2017
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Stockholders' Equity	20) STOCKHOLDERS’ EQUITY As of December 31,2017 and 2016, stockholders’ equity excludes investments in CPOs of the Parent Company held by subsidiaries of Ps301 (20,541,277 CPOs) and Ps327 (19,751,229 CPOs), respectively, which were eliminated within “Other equity reserves.” 20.1) COMMON STOCK AND ADDITIONAL PAID-IN As of December 31, 2017 and 2016, the breakdown of common stock and additional paid-in 2017 2016 Common stock Ps 4,171 4,162 Additional paid-in 140,483 123,174 Ps 144,654 127,336 As of December 31, 2017 and 2016 the common stock of CEMEX, S.A.B. de C.V. was presented as follows: 2017 2016 Shares 1 Series A 2 Series B 2 Series A 2 Series B 2 Subscribed and paid shares 30,214,469,912 15,107,234,956 28,121,583,148 14,060,791,574 Unissued shares authorized for executives’ stock compensation programs 531,739,616 265,869,808 638,468,154 319,234,077 Shares that guarantee the issuance of convertible securities 3 4,529,605,020 2,264,802,510 5,218,899,920 2,609,449,960 35,275,814,548 17,637,907,274 33,978,951,222 16,989,475,611 1 As of December 31, 2017 and 2016, 13,068,000,000 shares correspond to the fixed portion, and 39,845,721,822 shares in 2017 and 37,900,426,833 shares in 2016, correspond to the variable portion. 2 Series “A” or Mexican shares must represent at least 64% of CEMEX’s capital stock; meanwhile, Series “B” or free subscription shares must represent at most 36% of CEMEX’s capital stock. 3 Shares that guarantee the conversion of both the outstanding voluntary and mandatorily convertible securities and new securities issues (note 16.2). On March 30, 2017, stockholders at the annual ordinary shareholders’ meeting approved resolutions to: (i) increase the variable common stock through the capitalization of retained earnings by issuing up to 1,687 million shares (562 million CPOs), which shares were issued, representing an increase in common stock of Ps5, considering a nominal value of Ps0.00833 per CPO, and additional paid-in On March 31, 2016, stockholders at the annual ordinary shareholders’ meeting approved resolutions to: (i) increase the variable common stock through the capitalization of retained earnings by issuing up to 1,616 million shares (539 million CPOs), which shares were issued, representing an increase in common stock of Ps4, considering a nominal value of Ps0.00833 per CPO, and additional paid-in On March 26, 2015, stockholders at the annual ordinary shareholders’ meeting approved resolutions to: (i) increase the variable common stock through the capitalization of retained earnings by issuing up to 1,500 million shares (500 million CPOs), which shares were issued, representing an increase in common stock of Ps4, considering a nominal value of Ps0.00833 per CPO, and additional paid-in In connection with the long-term executive share-based compensation program (note 21) in 2017, 2016 and 2015, CEMEX issued approximately 53.2 million CPOs, 53.9 million CPOs and 49.2 million, respectively, generating an additional paid-in 20.2) OTHER EQUITY RESERVES As of December 31, 2017 and 2016 other equity reserves are summarized as follows: 2017 2016 Cumulative translation effect, net of effects from perpetual debentures and deferred income taxes recognized directly in equity (notes 19.2 and 20.4) Ps 21,288 31,293 Cumulative actuarial losses (10,931 ) (10,934 ) Effects associated with CEMEX´s convertible securities 1 3,427 4,761 Treasury shares held by subsidiaries (301 ) (327 ) Ps 13,483 24,793 1 Represents the equity component upon the issuance of CEMEX’s convertible securities described in note 16.2, as well as the effects associated with such securities in connection with the change in the Parent Company’s functional currency (note 2.4). Upon conversion of these securities, the balances have been correspondingly reclassified to common stock and/or additional paid-in For the years ended December 31, 2017, 2016 and 2015, the translation effects of foreign subsidiaries included in the statements of comprehensive income were as follows: 2017 2016 2015 Foreign currency translation result 1 Ps (3,116 ) 20,648 12,869 Foreign exchange fluctuations from debt 2 (4,160 ) 1,367 908 Foreign exchange fluctuations from intercompany balances 3 (2,243 ) (10,385 ) (5,801 ) Ps (9,519 ) 11,630 7,976 1 These effects refer to the result from the translation of the financial statements of foreign subsidiaries and include the changes in fair value of foreign exchange forward contracts designated as hedge of a net investment (note 16.4). 2 Generated by foreign exchange fluctuations over a notional amount of debt in CEMEX, S.A.B. de C.V., associated with the acquisition of foreign subsidiaries and designated as a hedge of the net investment in foreign subsidiaries (note 2.4). 3 Refers to foreign exchange fluctuations arising from balances with related parties in foreign currencies that are of a long-term investment nature considering that their liquidation is not anticipated in the foreseeable future and foreign exchange fluctuations over a notional amount of debt of a subsidiary of CEMEX España identified and designated as a hedge of the net investment in foreign subsidiaries. 20.3) RETAINED EARNINGS The Parent Company’s net income for the year is subject to a 5% allocation toward a legal reserve until such reserve equals one fifth of the common stock. As of December 31, 2017, the legal reserve amounted to Ps1,804. 20.4) NON-CONTROLLING Non-controlling Non-controlling non-controlling non-controlling non-controlling non-controlling • In February 2017, as described in note 4.1, CEMEX acquired a controlling interest in TCL, which shares trade in the Trinidad and Tobago Stock Exchange. As of December 31, 2017, there is a non-controlling • In July 2016, CHP, an indirect wholly-owned subsidiary of CEMEX España, S.A., closed its initial offering of 2,337,927,954 new common shares, or 45% of CHP’s common shares, at a price of 10.75 Philippine Pesos per common share. The net proceeds from the offering of US$507 (considering an exchange rate of 46.932 Philippines pesos per U.S. dollar on June 30, 2016), after deducting commissions and other offering expenses, were used by CEMEX for general corporate purposes, including the repayment of existing debt. CHP’s assets consist primarily of CEMEX’s cement manufacturing assets in the Philippines. As of December 31, 2017 and 2016, there is a non-controlling • In November 2012, pursuant to a public offering in Colombia and an international private placement, CLH, a direct subsidiary of CEMEX España, S.A., concluded its initial offering of common shares. CLH’s assets include substantially all of CEMEX’s assets in Colombia, Panama, Costa Rica, Brazil, Guatemala and El Salvador. As of December 31, 2017 and 2016, there is a non-controlling Perpetual debentures As of December 31, 2017, 2016 and 2015, the balances of the non-controlling Interest expense on the perpetual debentures, was included within “Other equity reserves” and amounted to Ps482 in 2017, Ps507 in 2016 and Ps432 in 2015, excluding in all the periods the amount of interest accrued by perpetual debentures held by subsidiaries. CEMEX’s perpetual debentures have no fixed maturity date and there are no contractual obligations for CEMEX to exchange any series of its outstanding perpetual debentures for financial assets or financial liabilities. As a result, these debentures, issued entirely by Special Purpose Vehicles (“SPVs”), qualify as equity instruments and are classified within non-controlling As of December 31, 2017 and 2016, the detail of CEMEX’s perpetual debentures, excluding the perpetual debentures held by subsidiaries, was as follows: 2017 2016 Repurchase option Interest rate Issuer Issuance date Nominal amount Nominal amount C10-EUR May 2007 € 64 € 64 Tenth anniversary EURIBOR + 4.79% C8 Capital (SPV) Ltd February 2007 US$ 135 US$ 135 Eighth anniversary LIBOR + 4.40% C5 Capital (SPV) Ltd 1 December 2006 US$ 61 US$ 61 Fifth anniversary LIBOR + 4.277% C10 Capital (SPV) Ltd December 2006 US$ 175 US$ 175 Tenth anniversary LIBOR + 4.71% 1 Under the 2017 Credit Agreement, and previously under the 2014 Credit Agreement, CEMEX is not permitted to call these debentures.

Executive Share-Based Compensat

Executive Share-Based Compensation	12 Months Ended
	Dec. 31, 2017
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Executive Share-Based Compensation	21) EXECUTIVE SHARE-BASED COMPENSATION CEMEX has long-term restricted share-based compensation programs providing for the grant of the Parent Company’s CPOs to a group of eligible executives, pursuant to which, new CPOs are issued under each annual program over a service period of four years (the “ordinary program”). The Parent Company’s CPOs of the annual grant (25% of each annual ordinary program) are placed at the beginning of the service period in the executives’ accounts to comply with a one year restriction on sale. Under the ordinary programs, the Parent Company issued new shares for approximately 53.2 million CPOs in 2017, 53.9 million CPOs in 2016 and 49.2 million CPOs in 2015 that were subscribed and pending for payment in the Parent Company’s treasury. As of December 31, 2017, there are approximately 79 million CPOs associated with these annual programs that are potentially expected to be issued in the following years as the executives render services. Moreover, beginning in 2017, with the approval of the Parent Company’s Board of Directors, for a group of key executives, the conditions of the program were modified for new awards by reducing the service period from four to three years and implementing three-annual internal and external performance metrics, which depending in their weighted achievement, may result in a final payment in the Parent Company’s CPOs at the end of the third year between 0% and 200% of the target for each annual program (the “key executives program”). During 2017, no CPOs of the Parent Company were issued under the key executives program. Beginning January 1, 2013, those eligible executives belonging to the operations of CLH and subsidiaries ceased to receive Parent Company’s CPOs and instead started receiving shares of CLH, sharing significantly the same conditions of CEMEX’s plan also over a service period of four years. During 2017, 2016 and 2015, CLH physically delivered 172,981 shares, 271,461 shares and 242,618 shares, respectively, corresponding to the vested portion of prior years’ grants, which were subscribed and held in CLH’s treasury. As of December 31, 2017, there are 798,552 shares of CLH associated with these annual programs that are expected to be delivered in the following years as the executives render services. The combined compensation expense related to the programs described above as determined considering the fair value of the awards at the date of grant in 2017, 2016 and 2015, was recognized in the operating results against other equity reserves and amounted to Ps817, Ps742 and Ps655, respectively. The weighted average price per CPO granted during the period was approximately 14.28 pesos in 2017, 13.79 pesos in 2016 and 13.34 pesos in 2015. Moreover, the weighted average price per CLH share granted during the period was 13,077 Colombian pesos in 2017, 13,423 Colombian pesos in 2016 and 14,291 Colombian pesos in 2015. As of December 31, 2017 and 2016, there were no options or commitments to make payments in cash to the executives based on changes in the market price of the Parent Company’s CPO or CLH’s shares.

Earnings per Share

Earnings per Share	12 Months Ended
	Dec. 31, 2017
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Earnings per Share	22) EARNINGS PER SHARE Basic earnings per share is calculated by dividing net income attributable to ordinary equity holders of the Parent Company (the numerator) by the weighted average number of shares outstanding (the denominator) during the period. Shares that would be issued depending only by the passage of time should be included in the determination of the basic weighted average number of shares outstanding. Diluted earnings per share should reflect in both, the numerator and denominator, the assumption that convertible instruments are converted, that options or warrants are exercised, or that ordinary shares are issued upon the satisfaction of specified conditions, to the extent that such assumption would led to a reduction in basic earnings per share or an increase in basic loss per share, otherwise, the effects of potential shares are not considered because they generate antidilution. The amounts considered for calculations of earnings per share in 2017, 2016 and 2015 were as follows: 2017 2016 2015 Denominator (thousands of shares) Weighted average number of shares outstanding 1 43,107,457 42,211,409 41,491,672 Capitalization of retained earnings 2 1,687,295 1,687,295 1,687,295 Effect of dilutive instruments — mandatorily convertible securities (note 16.2) 3 708,153 708,153 708,153 Weighted average number of shares — basic 45,502,905 44,606,857 43,887,120 Effect of dilutive instruments — share-based compensation (note 21) 3 237,102 226,972 171,747 Effect of potentially dilutive instruments — optionally convertible securities (note 16.2) 3 2,698,600 3,834,458 5,065,605 Weighted average number of shares — diluted 48,438,607 48,668,287 49,124,472 Numerator Net income from continuing operations Ps 13,139 14,438 1,096 Less: non-controlling 1,417 1,173 923 Controlling interest net income from continuing operations 11,722 13,265 173 Plus: after tax interest expense on mandatorily convertible securities 91 119 144 Controlling interest net income from continuing operations — for basic earnings per share calculations 11,813 13,384 317 Plus: after tax interest expense on optionally convertible securities 903 1,079 1,288 Controlling interest net income from continuing operations — for diluted earnings per share calculations Ps 12,716 14,463 1,605 Net income from discontinued operations Ps 3,499 768 1,028 Basic earnings per share Controlling interest basic earnings per share Ps 0.34 0.32 0.03 Controlling interest basic earnings per share from continuing operations 0.26 0.30 0.01 Controlling interest basic earnings per share from discontinued operations 0.08 0.02 0.02 Controlling interest diluted earnings per share 4 Controlling interest diluted earnings per share Ps 0.34 0.32 0.03 Controlling interest diluted earnings per share from continuing operations 0.26 0.30 0.01 Controlling interest diluted earnings per share from discontinued operations 0.08 0.02 0.02 1 The weighted average number of shares outstanding in 2016 and 2015 reflects the shares issued as a result of the capitalization of retained earnings declared on March 2016 and March 2015, as applicable (note 20.1). 2 According to resolution of the Parent Company’s stockholders’ meeting on March 30, 2017. 3 The number of CPOs to be issued under the executive share-based compensation programs, as well as the total amount of CPOs committed for issuance in the future under the mandatorily and optionally convertible securities, are computed from the beginning of the reporting period. The number of shares resulting from the executives’ stock option programs is determined under the inverse treasury method. 4 For 2017, 2016 and 2015, the effects on the denominator and numerator of potential dilutive shares generate antidilution; therefore, there is no change between the reported basic earnings per share and diluted earnings per share.

Commitments

Commitments	12 Months Ended
	Dec. 31, 2017
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Commitments	23) COMMITMENTS 23.1) GUARANTEES As of December 31, 2017 and 2016, CEMEX, S.A.B. de C.V., had guaranteed loans of certain subsidiaries for US$1,506 (Ps29,601) and US$2,887 (Ps59,819), respectively. 23.2) PLEDGED ASSETS CEMEX transferred to a guarantee trust the shares of its main subsidiaries, including, among others, CEMEX México, S.A. de C.V., New Sunward Holding B.V. and CEMEX España, S.A., and entered into pledge agreements in order to secure payment obligations under the 2017 Credit Agreement (formerly under the 2014 Credit Agreement and the Facilities Agreement) and other debt instruments entered into prior to the date of these agreements (note 16.1). As of December 31, 2017 and 2016, there are no liabilities secured by property, machinery and equipment. 23.3) OTHER COMMITMENTS As of December 31, 2017 and 2016, CEMEX was party of other commitments for several purposes, including the purchase of fuel and energy, which estimated future cash flows over their maturity are presented in note 23.5. A description of the most significant contracts is as follows: • In connection with the beginning of full commercial operations of the Ventika S.A.P.I. de C.V. and the Ventika II S.A.P.I. de C.V. wind farms (jointly “Ventikas”) located in the Mexican state of Nuevo Leon with a combined generation capacity of 252 Megawatts (“MW”), CEMEX agreed to acquire a portion of the energy generated by Ventikas for its overall electricity needs in Mexico for a period of 20 years, which began in April 2016. As of December 31, 2017, the estimated annual cost of this agreement is US$27 (unaudited) assuming that CEMEX receives all its energy allocation. Nonetheless, energy supply from wind source is variable in nature and final amounts will be determined considering the final MW effectively received at the agreed prices per unit. • On July 30, 2012, CEMEX signed a 10-year • Beginning in February 2010, for its overall electricity needs in Mexico CEMEX agreed with EURUS the purchase a portion of the electric energy generated for a period of no less than 20 years. EURUS is a wind farm with an installed capacity of 250 MW operated by ACCIONA in the Mexican state of Oaxaca. As of December 31, 2017, the estimated annual cost of this agreement is US$71 (unaudited) assuming that CEMEX receives all its energy allocation. Nonetheless, energy supply from wind source is variable in nature and final amounts will be determined considering the final MWh effectively received at the agreed prices per unit. • CEMEX maintains a commitment initiated in April 2004 to purchase the energy generated by Termoeléctrica del Golfo (“TEG”) until 2027 for its overall electricity needs in Mexico. As of December 31, 2017, the estimated annual cost of this agreement is US$110 (unaudited) assuming that CEMEX receives all its energy allocation. Nonetheless, final amounts will be determined considering the final MWg effectively received at the agreed prices per unit. • In regards with the above, CEMEX also committed to supply TEG and another third-party electrical energy generating plant adjacent to TEG all fuel necessary for their operations until the year 2027, equivalent to approximately 1.2 million tons of petroleum coke per year. CEMEX covers its commitments under this agreement acquiring the aforementioned volume of fuel from sources in the international markets and Mexico. • CEMEX OstZement GmbH (“COZ”), CEMEX’s subsidiary in Germany, held a long-term energy supply contract until 2023 with STEAG—Industriekraftwerk Rüdersdorf GmbH (“SIKW”) in connection with the overall electricity needs of CEMEX’s Rüdersdorf plant. Based on the contract, each year COZ has the option to fix in advance the volume of energy in terms of MW that it will acquire from VEN SIKW, with the option to adjust the purchase amount one time on a monthly and quarterly basis. The estimated annual cost of this agreement is approximately US$12 (unaudited) assuming that CEMEX receives all its energy allocation. 23.4) COMMITMENTS FROM EMPLOYEE BENEFITS In some countries, CEMEX has self-insured health care benefits plans for its active employees, which are managed on cost plus fee arrangements with major insurance companies or provided through health maintenance organizations. As of December 31, 2017, in certain plans, CEMEX has established stop-loss limits for continued medical assistance derived from a specific cause (e.g., an automobile accident, illness, etc.) ranging from 23 thousand dollars to 400 thousand dollars. In other plans, CEMEX has established stop-loss limits per employee regardless of the number of events ranging from 100 thousand dollars to 2.5 million dollars. The contingency for CEMEX if all employees qualifying for health care benefits required medical services simultaneously is significantly. However, this scenario is remote. The amount expensed through self-insured health care benefits was US$64 (Ps1,258) in 2017, US$69 (Ps1,430) in 2016 and US$69 (Ps1,189) in 2015. 23.5) CONTRACTUAL OBLIGATIONS As of December 31, 2017 and 2016, CEMEX had the following contractual obligations: (U.S. dollars millions) 2017 2016 Obligations Less than 1-3 years 3-5 years More 5 years Total Total Long-term debt US$ 798 519 2,411 6,164 9,892 11,379 Finance lease obligations 1 36 87 52 — 175 107 Convertible notes 2 379 527 — — 906 1,205 Total debt and other financial obligations 3 1,213 1,133 2,463 6,164 10,973 12,691 Operating leases 4 109 181 136 68 494 515 Interest payments on debt 5 448 968 809 848 3,073 3,996 Pension plans and other benefits 6 156 307 316 808 1,587 1,414 Purchases of raw materials, fuel and energy 7 649 810 866 2,001 4,326 4,440 Total contractual obligations US$ 2,575 3,399 4,590 9,889 20,453 23,056 Ps 50,599 66,790 90,193 194,319 401,901 477,720 1 Represent nominal cash flows. As of December 31, 2017, the NPV of future payments under such leases was US$158 (Ps3,105), of which, US$79 (Ps1,552) refers to payments from 1 to 3 years and US$48 (Ps943) refer to payments from 3 to 5 years. 2 Refers to the components of liability of the convertible notes described in note 16.2 and assumes repayment at maturity and no conversion of the notes. 3 The schedule of debt payments, which includes current maturities, does not consider the effect of any refinancing of debt that may occur during the following years. In the past, CEMEX has replaced its long-term obligations for others of a similar nature. 4 The amounts represent nominal cash flows. CEMEX has operating leases, primarily for operating facilities, cement storage and distribution facilities and certain transportation and other equipment, under which annual rental payments are required plus the payment of certain operating expenses. Rental expense was US$115 (Ps2,252) in 2017, US$121 (Ps2,507) in 2016 and US$114 (Ps1,967) in 2015. 5 Estimated cash flows on floating rate denominated debt were determined using the floating interest rates in effect as of December 31, 2017 and 2016. 6 Represents estimated annual payments under these benefits for the next 10 years (note 18), including the estimate of new retirees during such future years. 7 Future payments for the purchase of raw materials are presented on the basis of contractual nominal cash flows. Future nominal payments for energy were estimated for all contractual commitments on the basis of an aggregate average expected consumption per year using the future prices of energy established in the contracts for each period. Future payments also include CEMEX’s commitments for the purchase of fuel.

Legal Proceedings

Legal Proceedings	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Legal Proceedings	24) LEGAL PROCEEDINGS 24.1) PROVISIONS RESULTING FROM LEGAL PROCEEDINGS CEMEX is involved in various significant legal proceedings, the resolutions of which are deemed probable and imply cash outflows or the delivery of other resources owned by CEMEX. As a result, certain provisions or losses have been recognized in the financial statements, representing the best estimate of the amounts payable or the amount of impaired assets. Therefore, CEMEX believes that it will not make significant expenditure or incur significant losses in excess of the amounts recorded. As of December 31, 2017, the details of the most significant events giving effect to provisions or losses are as follows: • Regarding the Maceo project in Colombia (note 14), in August 2012, CEMEX Colombia signed a memorandum of understanding (“MOU”) with the representative of CI Calizas y Minerales S.A. (“CI Calizas”), which objective was the acquisition and transfer of assets comprising land, the mining concession and the environmental permit, the common shares of the entity Zona Franca Especial Cementera del Magdalena Medio S.A.S. (“Zomam”) (holder of the free trade zone concession), as well as the rights to build the new cement plant. After signing the MOU, a former shareholder of CI Calizas, who presumptively transferred its shares of CI Calizas two years before the signing of the MOU, was linked to a process of expiration of property initiated by Colombia’s Attorney General (the “Attorney General”). Amongst other measures, the Attorney General ordered the seizure and consequent suspension of the right to dispose the assets subject to the MOU. CEMEX Colombia acquired the shares of Zomam before the beginning of such process; nonetheless, the Attorney General decided to also include them in the action of expiration of property. To protect its interests and defend its rights as a third party acting in good faith and free of guilt, CEMEX Colombia joined the expiration of property process fully cooperating with the Attorney General. In July 2013, CEMEX Colombia signed with the provisional depository of the assets, designed by the Drugs National Department ( Dirección Nacional de Estupefacientes Sociedad de Activos Especiales S.A.S. In May 2016, the Attorney General resolved to deny the inadmissibility request to the action for expiration of property previously filed by CEMEX Colombia, considering that it should broaden the collection of evidential elements and its analysis in order to take a resolution according to law. As of December 31, 2017, given the nature of the process and the several procedural stages, it is estimated that it may take between five and ten years for the issuance of a final resolution in respect to the aforementioned process, which is in its investigation stage awaiting for the defendants’ legal counsel (guardians ad litem Moreover, in connection with Maceo’s project, CEMEX Colombia also engaged the same representative of CI Calizas to also represent in the name and on behalf of CEMEX Colombia in the acquisition of land adjacent to the plant, signing a new memorandum of understanding with this representative (the “Land MOU”). During 2016, CEMEX received reports through its anonymous reporting line, related to possible deficiencies in the purchase process of land were the cement plant is located. At this respect, CEMEX initiated an investigation and internal audit in accordance with its corporate governance policies and its code of ethics, confirming the irregularities in such process described below. As a result, on September 23, 2016, CLH and CEMEX Colombia decided to terminate the employment relationship with the Vice President of Planning of CLH and CEMEX Colombia, with the Legal Counsel of CLH and CEMEX Colombia; and accepted the resignation of the Chief Executive Officer of CLH and President of CEMEX Colombia to facilitate investigations. In order to strengthen the levels of leadership, management and best practices of corporate governance, in October 2016, the Board of Directors of CLH decided to separate the roles of Chairman of the Board of Directors, Chief Executive Officer of CLH and President of CEMEX Colombia, and immediately made the respective appointments. Moreover, pursuant to a requirement of CEMEX, S.A.B. de C.V.’s Audit Committee and of CLH’s Audit Commission, an audit firm, experts in forensic audits, was engaged in order to perform an independent investigation of the Maceo project. Additionally, CEMEX Colombia and CLH engaged an external firm to assist CLH and CEMEX Colombia on the necessary collaboration with the Attorney General and management also engaged a team of external lawyers for its own legal advice. The internal audit initiated in 2016 found that CEMEX Colombia made cash advances and paid interest to this representative for amounts in Colombian pesos equivalent to US$13.4 and US$1.2, respectively, in both cases considering the Colombian peso to U.S. dollar exchange rate as of December 31, 2016. These payments were deposited in the representative’s personal bank account as advance payments under the MOU and the Land MOU. CEMEX Colombia paid interest according to the representative’s instructions. Pursuant to the expiration of property process of the assets subject to the MOU and the failures to legally formalize the purchases under the Land MOU, as of the reporting date, CEMEX Colombia is not the legitimate owner of the aforementioned assets. Considering that payments made by CEMEX Colombia under the MOU and the Land MOU were made in violation of CEMEX’s and CLH’s internal policies; both CLH and CEMEX Colombia reported these facts to the Attorney General, providing the findings obtained during the investigations and internal audits, and also filed a claim in the civil courts aiming that all property rights related to the additional land, some of which were assigned to the representative, would be effectively transferred to CEMEX. Based on the investigation and internal audit related to Maceo’s project mentioned above, and considering the findings and the legal opinions available, in December 2016, CEMEX determined: a) low probability of recovering resources delivered under the different memorandums of understanding for an amount in Colombian pesos equivalent to US$14.3 (Ps295) recognized as part of investments in progress, were reduced to zero recognizing an impairment loss for such amount against “Other expenses, net;” b) certain purchases of equipment installed in the plant were considered exempt for VAT purposes under the benefits of the free trade zone, however, as those assets were actually installed outside of the free trade zone’s area, they lack of such benefits, therefore, CEMEX increased investments in progress against VAT accounts payable for US$9.2 (Ps191); and c) the cancellation of the balance payable to CI Calizas under the MOU in connection with the acquisition of the assets for US$9.1 (Ps188) against a reduction in investments in progress. All these amounts considering the Colombian peso to U.S. dollar exchange rate as of December 31, 2016. During 2017, no additional significant adjustments or losses have been determined in relation to this project. CEMEX Colombia determined an initial total budget for the Maceo plant of US$340. As of December 31, 2017, the carrying amount of the project, net of adjustments, is for an amount in Colombian pesos equivalent to Ps6,543 (US$333), considering the exchange rates as of December 31, 2017. In relation to the aforementioned irregularities detected, there is an ongoing criminal investigation by the Attorney General. As of December 31, 2017, the investigation by the Attorney General is finalizing its initial stage (inquiry) and a hearing to present charges was set for January 15, 2018, which would initiate the second stage of the proceeding (investigation). CEMEX is neither able to predict the actions that the General Attorney could implement, nor the possibility and degree in which any of these possible actions, including the termination of employment of the aforementioned executives, could have a material adverse effect on CEMEX’s results of operation, liquidity or financial position. Under the presumption that CEMEX Colombia conducted itself in good faith, and considering that the rest of its investments made in the development of Maceo’s project were made with the consent of the SAE and CI Calizas, such investments are protected by Colombian law, under which, if a person builds on the property of a third party, with full knowledge of such third party, this third party may: a) take ownership of the plant, provided a corresponding indemnity to CEMEX Colombia, or otherwise, b) oblige CEMEX Colombia to purchase the land. Consequently, CEMEX considers that will be able to retain ownership of the plant and other refurbishments made. Nonetheless, had this not be the case, CEMEX Colombia would take all necessary actions to safeguard the project in Maceo. At this respect, there is the possibility that CEMEX considers remote, in which, in the event that the expiration of property over the assets subject to the MOU is ordered in favor of the State, the SAE may decide not to sell the assets to CEMEX Colombia, or, the SAE may elect to maintain ownership of the assets and not extend the Lease Contract. In both cases, under Colombian law, CEMEX Colombia would be entitled to an indemnity for the amount of its incurred investments. However, an adverse resolution at this respect could have a material adverse effect on the Company’s results of operations, liquidity or financial condition. In October 2016, considering information that also emerged from the audits, CEMEX decided to postpone the start-up • On December 11, 2017, in the context of a market investigation opened in 2013 against five cement companies and 14 executives of those companies, including two former executives of CEMEX Colombia for purported practices that limited free competition, and after several processes over the years, the Colombian Superintendence of Industry and Commerce ( Superintendencia de Industria y Comercio • In January 2007, the Polish Competition and Consumers Protection Office (the “Protection Office”) initiated an antitrust proceeding against all cement producers in the country, including CEMEX Polska Sp. Z.o.o.(“CEMEX Polska”) and another subsidiary in Poland, arguing that there was an agreement between all cement producers in Poland regarding prices, market quotas and other sales conditions; and that the producers exchanged information, all of which limited competition in the Polish cement market. In December 2009, the Protection Office issued a resolution imposing fines on a number of Polish cement producers, including CEMEX Polska for the period of 1998 to 2006. The fine imposed on CEMEX Polska, after an appeal before the Polish Court of Competition and Consumer Protection in Warsaw amounts to the equivalent of US$27 (Ps531). In 2014, CEMEX Polska filed an appeal against the fine and the case has been since in the Appeals Court in Warsaw (the “Appeals Court”). The above mentioned penalty is not enforceable until the Appeals Court issues its final judgment and if the penalty is maintained in the final resolution, then it will be payable within 14 calendar days of the announcement. As of December 31, 2017, CEMEX had accrued a provision for the full amount of the fine mentioned above representing the best estimate in connection with this resolution. CEMEX Polska estimates that the final judgment will be issued during 2018. • As of December 31, 2017, CEMEX had accrued environmental remediation liabilities in the United Kingdom pertaining to closed and current landfill sites for the confinement of waste, representing the NPV of such obligations for an amount in Sterling Pounds equivalent to US$178 (Ps3,493). Expenditure was assessed and quantified over the period in which the sites have the potential to cause environmental harm, which was accepted by the regulator as being up to 60 years from the date of closure. The assessed expenditure included the costs of monitoring the sites and the installation, repair and renewal of environmental infrastructure. • As of December 31, 2017, CEMEX had accrued environmental remediation liabilities in the United States for an amount of US$30 (Ps586), related to: a) the disposal of various materials in accordance with past industry practice, which might currently be categorized as hazardous substances or wastes, and b) the cleanup of sites used or operated by CEMEX, including discontinued operations, regarding the disposal of hazardous substances or waste, either individually or jointly with other parties. Most of the proceedings are in the preliminary stages, and a final resolution might take several years. Based on the information developed to date, CEMEX’s does not believe that it will be required to spend significant sums on these matters in excess of the amounts previously recorded. The ultimate cost that may be incurred to resolve these environmental issues cannot be assured until all environmental studies, investigations, remediation work and negotiations with, or litigation against, potential sources of recovery have been completed. 24.2) OTHER CONTINGENCIES FROM LEGAL PROCEEDINGS CEMEX is involved in various legal proceedings, which have not required the recognition of accruals, considering that the probability of loss is less than probable or remote. In certain cases, a negative resolution may represent the revocation of an operating license, in which case, CEMEX may experience a decrease in future revenues, an increase in operating costs or a loss. Nonetheless, until all stages in the procedures are exhausted in each proceeding, CEMEX cannot assure the achievement of a final favorable resolution. As of December 31, 2017, the most significant events with a quantification of the potential loss, when it is determinable and would not impair the outcome of the relevant proceeding, were as follows: • In December 2016, CEMEX, S.A.B. de C.V. received subpoenas from the United States Securities and Exchange Commission (“SEC”) seeking information that may allow determining whether there are violations of the U.S. Foreign Corrupt Practices Act in connection with the Maceo project. These subpoenas do not mean that the SEC has concluded that CEMEX violated the law. The payments made by CEMEX Colombia in connection with Maceo’s project under the MOU and the MOU with the Representative described above, were made to non-governmental • In September 2016, CEMEX España Operaciones, S.L.U. (“CEMEX España Operaciones”), a subsidiary of CEMEX in Spain, in the context of a market investigation initiated in 2014 for alleged anticompetitive practices in 2009 for the cement market and the years 2008, 2009, 2012, 2013 and 2014 for the ready-mix Comisión Nacional de los Mercados y la Competencia Audiencia Nacional • In February 2014, the Egyptian Tax Authority requested Assiut Cement Company (“ACC”), a subsidiary of CEMEX in Egypt, the payment of a development levy on clay applied to the Egyptian cement industry in amounts equivalent as of December 31, 2017 of US$18 (Ps357) for the period from May 5, 2008 to November 30, 2011. In March 2014, ACC appealed the levy and obtained a favorable resolution by the Ministerial Committee for Resolution of Investment Disputes, which instructed the Egyptian Tax Authority to cease claiming ACC the aforementioned payment of the levy on clay. It was further decided that the levy on clay should not be imposed on imported clinker. Nonetheless, in May 2016, the Egyptian Tax Authority challenged ACC´s right to cancel the levy on clay before the North Cairo Court, which referred the cases to Cairo’s Administrative Judiciary Court. As of December 31, 2017, a session has been scheduled for February 5, 2018 in order to review the two referred cases. At this stage, as of December 31, 2017, CEMEX does not expect a material adverse impact due to this matter in its results of operations, liquidity or financial position. • In September 2012, in connection with a lawsuit submitted to a first instance court in Assiut, Egypt in 2011, the first instance court of Assiut issued a resolution in order to nullify the Share Purchase Agreement (the “SPA”) pursuant to which CEMEX acquired in 1999 a controlling interest in Assiut Cement Company (“ACC”). In addition, during 2011 and 2012, lawsuits seeking, among other things, the annulment of the SPA were filed by different plaintiffs, including 25 former employees of ACC, before Cairo’s State Council. After several appeals, hearings and resolutions over the years, as of December 31, 2017, in connection with the first lawsuit of 2011, was referred by the Assiut’s Administrative Judiciary Court to the Commissioners’ Division to render the corresponding opinion; whereas in respect to the second lawsuits, the cases are held in Cairo’s 7 th • In 2012, in connection with a contract entered into in 1990 (the “Quarry Contract”) by CEMEX Granulats Rhône Méditerranée (“CEMEX GRM”), one of CEMEX’s subsidiaries in France, with SCI La Quinoniere (“SCI”) pursuant to which CEMEX GRM has drilling rights in order to extract reserves and do quarry remediation at a quarry in the Rhône region of France, SCI filed a claim against CEMEX GRM for breach of the Quarry Contract, requesting the rescission of such contract and damages plus interest for an amount in euros equivalent to US$66 (Ps1,297), arguing that CEMEX GRM partially filled the quarry allegedly in breach of the terms of the Quarry Contract. After many hearings, resolutions and appeals over the years, as of December 31, 2017, the case is held in the appeals court in Lyon, France, where a judgment is expected by mid 2018. As of December 31, 2017, CEMEX considers that an adverse resolution on this matter would not have a material adverse impact on CEMEX’s results of operations, liquidity and financial condition. • In June 2012, one of CEMEX’s subsidiaries in Israel and three other companies were notified about a class action suits filed by a homeowner who built his house with concrete supplied by the defendants in October 2010. The class action argues that the concrete supplied to him did not meet with the Israeli ready-mix non-financial non-conforming • In June 2010, the District of Bogota’s Environmental Secretary (the “Environmental Secretary”), ordered the suspension of CEMEX Colombia’s mining activities at El Tunjuelo quarry, located in Bogota, sealed off the mine to machinery and prohibited the removal of aggregates inventory, as well as those of other aggregates producers in the same area. The Environmental Secretary alleged that during the past 60 years, CEMEX Colombia and the other companies have illegally changed the course of the Tunjuelo River, have used the percolating waters without permission and have improperly used the edge of the river for mining activities. CEMEX Colombia responded to the injunction by requesting that it be revoked based on the fact that the mining activities at El Tunjuelo quarry are supported by the authorizations required by the applicable environmental laws and that all the environmental impact statements submitted by CEMEX Colombia have been reviewed and permanently authorized by the Ministry of Environment and Sustainable Development. Although there is not an official quantification of the possible fine, the Environmental Secretary has publicly declared that the fine could be up to the equivalent of US$100 (Ps1,976). As of December 31, 2017, CEMEX is not able to assess the likelihood of an adverse result or potential damages which could be borne by CEMEX Colombia. An adverse resolution on this case could have a material adverse impact on CEMEX’s results of operations, liquidity or financial condition. In connection with the legal proceedings presented in notes 24.1 and 24.2, the exchange rates as of December 31, 2017 used by CEMEX to convert the amounts in local currency to their equivalents in dollars were the official closing exchange rates of 3.47 Polish zloty per dollar, 0.83 Euro per dollar, 0.74 British pound sterling per dollar, 2,984.0 Colombian pesos per dollar and 3.47 Israelite shekel per dollar. In addition to the legal proceedings described above in notes 24.1 and 24.2, as of December 31, 2017, CEMEX is involved in various legal proceedings of minor impact that have arisen in the ordinary course of business. These proceedings involve: 1) product warranty claims; 2) claims for environmental damages; 3) indemnification claims relating to acquisitions or divestitures; 4) claims to revoke permits and/or concessions; and 5) other diverse civil actions. CEMEX considers that in those instances in which obligations have been incurred, CEMEX has accrued adequate provisions to cover the related risks. CEMEX believes these matters will be resolved without any significant effect on its business, financial position or results of operations. In addition, in relation to certain ongoing legal proceedings, CEMEX is sometimes able to make and disclose reasonable estimates of the expected loss or range of possible loss, as well as disclose any provision accrued for such loss, but for a limited number of ongoing legal proceedings, CEMEX may not be able to make a reasonable estimate of the expected loss or range of possible loss or may be able to do so but believes that disclosure of such information on a case-by-case

Related Parties

Related Parties	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Related Parties	25) RELATED PARTIES All significant balances and transactions between the entities that constitute the CEMEX group have been eliminated in the preparation of the consolidated financial statements. These balances with related parties resulted primarily from: (i) the sale and purchase of goods between group entities; (ii) the sale and/or acquisition of subsidiaries’ shares within the CEMEX group; (iii) the invoicing of administrative services, rentals, trademarks and commercial name rights, royalties and other services rendered between group entities; and (iv) loans between related parties. Transactions between group entities are conducted on arm’s length terms based on market prices and conditions. When market prices and/or market conditions are not readily available, CEMEX conducts transfer pricing studies in the countries in which it operates to assure compliance with regulations applicable to transactions between related parties. The definition of related parties includes entities or individuals outside the CEMEX group, which, pursuant to their relationship with CEMEX, may take advantage of being in a privileged situation. Likewise, this applies to cases in which CEMEX may take advantage of such relationships and obtain benefits in its financial position or operating results. CEMEX’s transactions with related parties are executed under market conditions. For the years ended December 31, 2017, 2016 and 2015, in ordinary course of business, CEMEX has entered into transactions with related parties for the sale of products, purchase of services or the lease of assets, all of which are not significant for CEMEX and the related party, are incurred for non-significant In addition, for the years ended December 31, 2017, 2016 and 2015, the aggregate amount of compensation of CEMEX board of directors, including alternate directors, and top management executives, was US$47 (Ps887), US$43 (Ps802) and US$36 (Ps579), respectively. Of these amounts, US$35 (Ps661) in 2017, US$32 (Ps595) in 2016, US$25 (Ps402) in 2015, was paid as base compensation plus performance bonuses, including pension and post-employment benefits. In addition, US$12 (Ps227) in 2017, US$11 (Ps207) in 2016 and US$11 (Ps177) in 2015 of the aggregate amount in each year, corresponded to allocations of CPOs under CEMEX’s executive share-based compensation programs.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Subsequent Events	26) SUBSEQUENT EVENTS On January 5, 2018, in connection with the fine associated with the market investigation imposed by the SIC in Colombia for US$25 (Ps491), CEMEX Colombia made the payment of such fine, CEMEX Colombia will not appeal the resolution of the SIC and instead intends directly to file an annulment and reestablishment of right claim before the Administrative Court within the four months after the resolution. Once filed, this claim could take a considerable amount of time in being resolved. As of December 31, 2017, CEMEX is not able to assess the likelihood for the recovery of the fine imposed by the SIC or the timeframe for the defense process. On January 10, 2018, in connection with the tender offer of the January 2022 Notes, the Parent Company incurred a payment of €419, which included, the principal amount oustanding of the notes of €400 plus the premium offer and the accrued interest at the date of redemption (note 16.1). On January 31, 2018, CEMEX España was notified, based on a resolution dated January 18, 2018, that the National Court ( Audiencia Nacional On February 14, 2018, CEMEX through one of its subsidiaries in the United States agreed to increase its ownership interest in Lehigh White Cement Company (“Lehigh White”) from 24.5% to 36.75%. On March 29, 2018 CEMEX closed the operation and paid a total of US$34 (note 13.1). On March 12, 2018, Department of Justice of the United States (“DOJ”) issued a grand jury subpoena to CEMEX, S.A.B. de C.V. relating to its operations in Colombia and other jurisdictions. CEMEX, S.A.B. de C.V. intends to cooperate fully with the SEC, DOJ, and any other investigatory entity. As of April 30, 2018, CEMEX, S.A.B. de C.V. is unable to predict the duration, scope, or outcome of either the SEC investigation or the DOJ investigation, or any other investigation that may arise, or, because of the current status of the SEC investigation and the preliminary nature of the DOJ investigation, the potential sanctions which could be borne by CEMEX, S.A.B. de C.V., or if such sanctions, if any, would have a material adverse impact on CEMEX, S.A.B. de C.V.‘s results of operations, liquidity and financial condition (note 24.1). In connection with the 2018 Convertible Notes, on March 15, 2018, CEMEX incurred a payment of US$372, which include the outstanding amount of US$365 plus accrued interest at the date of redemption. In addition, on March 15, 2018, CEMEX redeemed the outstanding amount of the January 2021 notes, for a total amount of US$357, which include the outstanding amount of US$341 plus the premium offer and the accrued interest at the date of redemption (note 16.1). On March 16, 2018, a putative securities class action complaint was filed against CEMEX and one of its members of the board of directors (CEO) and certain of its officers (CEO and CFO) in the U.S. District Court for the Southern District of New York, on behalf of the investors who purchased or otherwise acquired securities of CEMEX between August 14, 2014 to March 13, 2018, inclusive. The complaint alleges violations of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) based on purportedly issuing press releases and SEC filings that included materially false and misleading statements in connection with alleged misconduct relating to the Maceo project and the potential regulatory or criminal actions that might arise as a result. CEMEX denies liability and intends to vigorously defend the case. CEMEX is not able to assess the likelihood of an adverse result to this lawsuit. Because of its current status and its preliminary nature, CEMEX is not able to assess if a final adverse result in this lawsuit would have a material adverse impact on its results of operations, liquidity and financial condition. In connection with the tax proceedings of CEMEX Colombia, on April 9, 2018, the Colombian Tax Authority notified CEMEX Colombia of a proceeding notice in which the Colombian Tax Authority rejected certain deductions taken by CEMEX Colombia in its 2012 year-end income tax return. The Colombian Tax Authority assessed an increase in taxes to be paid by CEMEX Colombia in the amount of 124.79 billion Colombian Pesos (US$42) and imposed a penalty in the amount of 124.79 billion Colombian Pesos (US$42). CEMEX Colombia intends to appeal the Colombian Tax Authority’s decision and exhaust all legal recourses available. CEMEX is not able to assess the likelihood of an adverse result to this matter. However, if such matter is finally resolved adversely to CEMEX, CEMEX does not expect such adverse resolution would have a material adverse impact on its results of operations, liquidity and financial condition. As of the date of this annual report on Form 20-F, the Chief Executive Officer of CEMEX, S.A.B. de C.V. has authorized the inclusion of these consolidated financial statements, which were originally approved at CEMEX, S.A.B. de C.V.’s 2017 general ordinary shareholders’ meeting held on April 5, 2018, hereby updated for subsequent events, to be filed with the United States Securities and Exchange Commission.

Main Subsidiaries

Main Subsidiaries	12 Months Ended
	Dec. 31, 2017
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Main Subsidiaries	27) MAIN SUBSIDIARIES The main subsidiaries as of December 31, 2017 and 2016 were as follows: % Interest Subsidiary Country 2017 2016 CEMEX México, S. A. de C.V. 1 Mexico 100.0 100.0 CEMEX España, S.A. 2 Spain 99.9 99.9 CEMEX, Inc. United States of America 100.0 100.0 CEMEX Latam Holdings, S.A. 3 Spain 73.2 73.3 CEMEX (Costa Rica), S.A. Costa Rica 99.1 99.1 CEMEX Nicaragua, S.A. Nicaragua 100.0 100.0 Assiut Cement Company Egypt 95.8 95.8 CEMEX Colombia S.A. 4 Colombia 99.9 99.9 Cemento Bayano, S.A. 5 Panama 100.0 100.0 CEMEX Dominicana, S.A. Dominican Republic 100.0 100.0 Trinidad Cement Limited Trinidad and Tobago 69.8 — CEMEX de Puerto Rico Inc. Puerto Rico 100.0 100.0 CEMEX France Gestion (S.A.S.) France 100.0 100.0 CEMEX Holdings Philippines, Inc. 6 Philippines 55.0 55.0 Solid Cement Corporation 6 Philippines 100.0 100.0 APO Cement Corporation 6 Philippines 100.0 100.0 CEMEX Holdings (Malaysia) Sdn Bhd Malaysia 100.0 100.0 CEMEX U.K. United Kingdom 100.0 100.0 CEMEX Deutschland, AG. Germany 100.0 100.0 CEMEX Czech Republic, s.r.o. Czech Republic 100.0 100.0 CEMEX Polska sp. Z.o.o. Poland 100.0 100.0 CEMEX Holdings (Israel) Ltd. Israel 100.0 100.0 CEMEX SIA Latvia 100.0 100.0 CEMEX Topmix LLC, CEMEX Supermix LLC and CEMEX Falcon LLC 7 United Arab Emirates 100.0 100.0 Neoris N.V. 8 The Netherlands 99.8 99.8 CEMEX International Trading, LLC 9 United States of America 100.0 100.0 Transenergy, Inc. 10 United States of America 100.0 100.0 1 CEMEX México, S.A. de C.V. is the indirect holding company of CEMEX España, S.A. and subsidiaries. 2 CEMEX España, S.A is the indirect holding company of most of CEMEX’s international operations. 3 The interest reported excludes own shares held at CLH’s treasury. CLH, entity incorporated in Spain, trades its ordinary shares in the Colombian Stock Exchange under the symbol CLH, is the indirect holding company of CEMEX’s operations in Colombia, Panama, Costa Rica, Guatemala, Nicaragua, El Salvador and Brazil (note 20.4). 4 Represents our 99.7% and 98.9% interest in ordinary and preferred shares, respectively. 5 Includes a 0.515% interest held on Cemento Bayano’s treasury. 6 Represents CHP direct and indirect interest. CEMEX’s operations in the Philippines are conducted through CHP, subsidiary incorporated in the Philippines which since July 2016 trades its ordinary shares in the Philippines Stock Exchange under the symbol CHP (note 20.4). 7 CEMEX owns a 49% equity interest in each of these entities and holds the remaining 51% of the economic benefits, through agreements with other shareholders. 8 Neoris N.V. is the holding company of the entities involved in the sale of information technology solutions and services. 9 CEMEX International Trading, LLC is involved in the international trading of CEMEX’s products. 10 Formerly named Gulf Coast Portland Cement Co., it is engaged in the procurement and trading of fuels, such as coal and petroleum coke, used in certain operations of CEMEX’s.

Significant Accounting Polici34

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
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Explanatory Description Of Accounting Policy for Basis of Presentation and Disclosure	2.1) BASIS OF PRESENTATION AND DISCLOSURE The consolidated financial statements as of December 31, 2017 and 2016 and for the years ended December 31, 2017, 2016 and 2015, were prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”). Presentation currency and definition of terms The presentation currency of the consolidated financial statements is the Mexican peso, currency in which the Company reports periodically to the MSE. When reference is made to pesos or “Ps” it means Mexican pesos. The amounts in the financial statements and the accompanying notes are stated in millions, except when references are made to earnings per share and/or prices per share. When reference is made to “US$” or “dollars”, it means dollars of the United States of America (“United States”). When reference is made to “€” or “euros,” it means the currency in circulation in a significant number of European Union (“EU”) countries. When reference is made to “£” or “pounds”, it means British pounds sterling. When it is deemed relevant, certain amounts in foreign currency presented in the notes to the financial statements include between parentheses a convenience translation into dollars and/or into pesos, as applicable. Previously reported convenience translations of prior years are not restated unless the transaction is still outstanding, in which case those are restated using the closing exchange rates as of the reporting date. These translations should not be construed as representations that the amounts in pesos or dollars, as applicable, actually represent those peso or dollar amounts or could be converted into pesos or dollars at the rate indicated. As of December 31, 2017 and 2016, translations of pesos into dollars and dollars into pesos, were determined for statement of financial position amounts using the closing exchange rates of Ps19.65 and Ps20.72 pesos per dollar, respectively, and for statements of operations amounts, using the average exchange rates of Ps18.88, Ps18.72 and Ps15.98 pesos per dollar for 2017, 2016 and 2015, respectively. When the amounts between parentheses are the peso and the dollar, the amounts were determined by translating the euro amount into dollars using the closing exchange rates at year-end Amounts disclosed in the notes in connection with tax or legal proceedings (notes 19.4 and 24), which are originated in jurisdictions which currencies are different to the peso or the dollar, are presented in dollar equivalents as of the closing of the most recent year presented. Consequently, without any change in the original currency, such dollar amounts will fluctuate over time due to changes in exchange rates. Discontinued operations On April 5, 2017, in connection with the agreements entered into between CEMEX and Duna-Dráva Duna-Dráva line-by-line re-presented ready-mix In addition, considering the disposal of entire reportable operating segments, CEMEX presents in the single line item of discontinued operations, the results of: a) its Pacific Northwest Materials Business operations in the United States sold on June 30, 2017; b) its Concrete Pipe Business operations in the United States sold on January 31, 2017; c) its operations in Bangladesh and Thailand sold on May 26, 2016; and d) its operations in Austria and Hungary sold on October 31, 2015 (note 4.2). Discontinued operations are presented net of income tax. Income statements CEMEX includes the line item titled “Operating earnings before other expenses, net” considering that it is a relevant measure for CEMEX’s management as explained in note 4.4. Under IFRS, the inclusion of certain subtotals such as “Operating earnings before other expenses, net” and the display of the statement of operations vary significantly by industry and company according to specific needs. The line item “Other expenses, net” consists primarily of revenues and expenses not directly related to CEMEX’s main activities, or which are of an unusual and/or non-recurring Statements of cash flows The statements of cash flows exclude the following transactions that did not represent sources or uses of cash: • In 2017, 2016 and 2015, the increases in common stock and additional paid-in • In 2017, 2016 and 2015, the increases in property, plant and equipment for Ps2,096, Ps7 and Ps63, respectively, associated with the finance leases during the year (note 14); • In 2017, the decrease in debt for Ps5,468, the net decrease in other equity reserves for Ps1,334, the increase in common stock for Ps4 and the increase in additional paid-in paid-in • In 2016, the increase in debt and in other current accounts receivable for Ps148, in connection with a guarantee signed by CEMEX Colombia, S.A. (“CEMEX Colombia”) over the debt of a trust committed to the development of housing projects in Colombia and the related beneficial interest that in turn holds CEMEX Colombia in the assets of such trust, which are comprised by land; and • In 2015, the decrease in other current and non-current
Principles of Consolidation	2.2) PRINCIPLES OF CONSOLIDATION The consolidated financial statements include those of CEMEX, S.A.B. de C.V. and those of the entities in which the Parent Company exercises control, including structured entities (special purposes entities), by means of which the Parent Company is exposed, or has rights, to variable returns from its involvement with the investee, and has the ability to affect those returns through its power over the investee’s relevant activities. Balances and operations between related parties are eliminated in consolidation. Investments are accounted for by the equity method when CEMEX has significant influence which is generally presumed with a minimum equity interest of 20%. The equity method reflects in the financial statements, the investee’s original cost and CEMEX’s share of the investee’s equity and earnings after acquisition. The financial statements of joint ventures, which relate to those arrangements in which CEMEX and other third-party investors have joint control and have rights to the net assets of the arrangements, are recognized under the equity method. During the reported periods, CEMEX did not have joint operations, referring to those cases in which the parties that have joint control of the arrangement have rights over specific assets and obligations for specific liabilities relating to the arrangements. The equity method is discontinued when the carrying amount of the investment, including any long-term interest in the investee or joint venture, is reduced to zero, unless CEMEX has incurred or guaranteed additional obligations of the investee or joint venture. Other permanent investments where CEMEX holds equity interests of less than 20% and/or there is no significant influence are carried at their historical cost.
Use of Estimates and Critical Assumptions	2.3) USE OF ESTIMATES AND CRITICAL ASSUMPTIONS The preparation of financial statements in accordance with IFRS requires management to make estimates and assumptions that affect reported amounts of assets and liabilities, and the disclosure of contingent assets and liabilities at the date of the financial statements; as well as the reported amounts of revenues and expenses during the period. These assumptions are reviewed on an ongoing basis using available information. Actual results could differ from these estimates. The items subject to significant estimates and assumptions by management include impairment tests of long-lived assets, recognition of deferred income tax assets, as well as the measurement of financial instruments at fair value, and the assets and liabilities related to employee benefits. Significant judgment is required by management to appropriately assess the amounts of these concepts.
Foreign Currency Transactions and Translation of Foreign Currency Financial Statements	2.4) FOREIGN CURRENCY TRANSACTIONS AND TRANSLATION OF FOREIGN CURRENCY FINANCIAL STATEMENTS Transactions denominated in foreign currencies are recorded in the functional currency at the exchange rates prevailing on the dates of their execution. Monetary assets and liabilities denominated in foreign currencies are translated into the functional currency at the exchange rates prevailing at the statement of financial position date, and the resulting foreign exchange fluctuations are recognized in earnings, except for exchange fluctuations arising from: 1) foreign currency indebtedness associated with the acquisition of foreign entities; and 2) fluctuations associated with related parties’ balances denominated in foreign currency, which settlement is neither planned nor likely to occur in the foreseeable future and as a result, such balances are of a permanent investment nature. These fluctuations are recorded against “Other equity reserves”, as part of the foreign currency translation adjustment (note 20.2) until the disposal of the foreign net investment, at which time, the accumulated amount is recycled through the statement of operations as part of the gain or loss on disposal. The financial statements of foreign subsidiaries, as determined using their respective functional currency, are translated to pesos at the closing exchange rate for statement of financial position accounts and at the closing exchange rates of each month within the period for statements of operations accounts. The functional currency is that in which each consolidated entity primarily generates and expends cash. The corresponding translation effect is included within “Other equity reserves” and is presented in the statement of other comprehensive income for the period as part of the foreign currency translation adjustment (note 20.2) until the disposal of the net investment in the foreign subsidiary. Considering its integrated activities, for purposes of functional currency, the Parent Company is considered to have two divisions, one related with its financial and holding company activities, in which the functional currency is the dollar for all assets, liabilities and transactions associated with these activities, and another division related with the Parent Company’s operating activities in Mexico, in which the functional currency is the peso for all assets, liabilities and transactions associated with these activities. During the reported periods, there were no subsidiaries whose functional currency was the currency of a hyperinflationary economy, which is generally considered to exist when the cumulative inflation rate over the last three years is approaching, or exceeds, 100%. In a hyperinflationary economy, the accounts of the subsidiary’s statements of operations should be restated to constant amounts as of the reporting date, in which case, both the statement of financial position accounts and the income statement accounts would be translated to pesos at the closing exchange rates of the year. The most significant closing exchange rates and the approximate average exchange rates for statement of financial position accounts and statement of operations accounts as of December 31, 2017, 2016 and 2015, were as follows: 2017 2016 2015 Currency Closing Average Closing Average Closing Average Dollar 19.6500 18.8800 20.7200 18.7200 17.2300 15.9800 Euro 23.5866 21.4122 21.7945 20.6564 18.7181 17.6041 British Pound Sterling 26.5361 24.4977 25.5361 25.0731 25.4130 24.3638 Colombian Peso 0.0066 0.0064 0.0069 0.0062 0.0055 0.0058 Egyptian Pound 1.1082 1.0620 1.1234 1.8261 2.2036 2.0670 Philippine Peso 0.3936 0.3747 0.4167 0.3927 0.3661 0.3504 The financial statements of foreign subsidiaries are initially translated from their functional currencies into dollars and subsequently into pesos. Therefore, the foreign exchange rates presented in the table above between the functional currency and the peso represent the implied exchange rates resulting from this methodology. The peso to U.S. dollar exchange rate used by CEMEX is an average of free market rates available to settle its foreign currency transactions. No significant differences exist, in any case, between the foreign exchange rates used by CEMEX and those exchange rates published by the Mexican Central Bank.
Cash and Cash Equivalents	2.5) CASH AND CASH EQUIVALENTS (note 8) The balance in this caption is comprised of available amounts of cash and cash equivalents, mainly represented by highly-liquid short-term investments, which are readily convertible into known amounts of cash, and which are not subject to significant risks of changes in their values, including overnight investments, which yield fixed returns and have maturities of less than three months from the investment date. These fixed-income investments are recorded at cost plus accrued interest. Accrued interest is included in the income statement as part of “Financial income and other items, net.” The amount of cash and cash equivalents in the statement of financial position includes restricted cash and investments, comprised of deposits in margin accounts that guarantee certain of CEMEX’s obligations, to the extent that the restriction will be lifted in less than three months from the statement of financial position reporting date. When the restriction period is greater than three months, such restricted cash and investments are not considered cash equivalents and are included within short-term or long-term “Other accounts receivable,” as appropriate. When contracts contain provisions for net settlement, these restricted amounts of cash and cash equivalents are offset against the liabilities that CEMEX has with its counterparties.
Financial Instruments	2.6) FINANCIAL INSTRUMENTS Beginning January 1, 2018, IFRS 9, Financial Instruments: classification and measurement Trade accounts receivable and other accounts receivable (notes 9 and 10) Instruments under these captions are classified as loans and receivables and are recorded at their amortized cost representing the net present value (“NPV”) of the consideration receivable or payable as of the transaction date. Due to their short-term nature, CEMEX initially recognizes these receivables at the original invoiced amount less an estimate of doubtful accounts. Allowances for doubtful accounts were recognized based on incurred loss estimates against administrative and selling expenses. Trade receivables sold under securitization programs, in which certain residual interest in the trade receivables sold in case of recovery failure and continued involvement in such assets is maintained, do not qualify for derecognition and are maintained on the statement of financial position. Other investments and non-current As part also of loans and receivables, non-current Investments in financial instruments held for trading, as well as those investments available for sale, are recognized at their estimated fair value, in the first case through the income statement as part of “Financial income and other items, net,” and in the second case, changes in valuation are recognized as part of “Other comprehensive income” for the period within “Other equity reserves” until their time of disposition, when all valuation effects accrued in equity are reclassified to “Financial income and other items, net,” in the income statement. These investments are tested for impairment upon the occurrence of a significant adverse change or at least once a year during the last quarter. Debt and other financial obligations (notes 16.1 and 16.2) Bank loans and notes payable are recognized at their amortized cost. Interest accrued on financial instruments is recognized within “Other accounts payable and accrued expenses” against financial expense. During the reported periods, CEMEX did not have financial liabilities voluntarily recognized at fair value or associated to fair value hedge strategies with derivative financial instruments. Direct costs incurred in debt issuances or borrowings, as well as debt refinancing or non-substantial Finance leases are recognized as financing liabilities against a corresponding fixed asset for the lesser of the market value of the leased asset and the NPV of future minimum lease payments, using the contract’s implicit interest rate to the extent available, or the incremental borrowing cost. The main factors that determine a finance lease are: a) ownership title of the asset is transferred to CEMEX at the expiration of the contract; b) CEMEX has a bargain purchase option to acquire the asset at the end of the lease term; c) the lease term covers the majority of the useful life of the asset; and/or d) the NPV of minimum payments represents substantially all the fair value of the related asset at the beginning of the lease. Financial instruments with components of both liabilities and equity (note 16.2) The financial instrument that contains components of both liability and equity, such as notes convertible into a fixed number of the issuer’s shares and denominated its same functional currency, each component is recognized separately in the statement of financial position according to the specific characteristics of each transaction. In the case of instruments mandatorily convertible into shares of the issuer, the liability component represents the NPV of interest payments on the principal amount using a market interest rate, without assuming early conversion, and is recognized within “Other financial obligations,” whereas the equity component represents the difference between the principal amount and the liability component, and is recognized within “Other equity reserves”, net of commissions. In the case of instruments that are optionally convertible into a fixed number of shares, the liability component represents the difference between the principal amount and the fair value of the conversion option premium, which reflects the equity component (note 2.14). When the transaction is denominated in a currency different than the functional currency of the issuer, the conversion option is accounted for as a derivative financial instrument at fair value in the income statement. Derivative financial instruments (note 16.4) CEMEX recognizes all derivative instruments as assets or liabilities in the statement of financial position at their estimated fair values, and the changes in such fair values are recognized in the income statement within “Financial income and other items, net” for the period in which they occur, except for the effective portion of changes in fair value of derivative instruments associated with cash flow hedges, in which case, such changes in fair value are recognized in stockholders’ equity, and are reclassified to earnings as the interest expense of the related debt is accrued, in the case of interest rate swaps, or when the underlying products are consumed in the case of contracts on the price of raw materials and commodities. Likewise, in hedges of the net investment in foreign subsidiaries, changes in fair value are recognized in stockholders’ equity as part of the foreign currency translation result (note 2.4), which reversal to earnings would take place upon disposal of the foreign investment. During the reported periods, CEMEX did not have derivatives designated as fair value hedges. Derivative instruments are negotiated with institutions with significant financial capacity; therefore, CEMEX believes the risk of non-performance CEMEX reviews its contracts to identify the existence of embedded derivatives. Identified embedded derivatives are analyzed to determine if they need to be separated from the host contract and recognized in the statement of financial position as assets or liabilities, applying the same valuation rules used for other derivative instruments. Put options granted for the purchase of non-controlling Represent agreements by means of which a non-controlling In respect of a put option granted for the purchase of an associate, CEMEX would recognize a liability against a loss in the statements of operations whenever the estimated purchase price exceeds the fair value of the net assets to be acquired by CEMEX, had the counterparty exercised its right to sell. As of December 31, 2017 and 2016, there were no written put options. Fair value measurements (note 16.3) Under IFRS, fair value represents an “Exit Value” which is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date, considering the counterparty’s credit risk in the valuation. The concept of Exit Value is premised on the existence of a market and market participants for the specific asset or liability. When there is no market and/or market participants willing to make a market, IFRS establishes a fair value hierarchy that gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to measurements involving significant unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are as follows: • Level 1.— represent quoted prices (unadjusted) in active markets for identical assets or liabilities that CEMEX has the ability to access at the measurement date. A quote price in an active market provides the most reliable evidence of fair value and is used without adjustment to measure fair value whenever available. • Level 2.— are inputs other than quoted prices in active markets that are observable for the asset or liability, either directly or indirectly, and are used mainly to determine the fair value of securities, investments or loans that are not actively traded. Level 2 inputs included equity prices, certain interest rates and yield curves, implied volatility and credit spreads, among others, as well as inputs extrapolated from other observable inputs. In the absence of Level 1 inputs, CEMEX determined fair values by iteration of the applicable Level 2 inputs, the number of securities and/or the other relevant terms of the contract, as applicable. • Level 3.— inputs are unobservable inputs for the asset or liability. CEMEX used unobservable inputs to determine fair values, to the extent there are no Level 1 or Level 2 inputs, in valuation models such as Black-Scholes, binomial, discounted cash flows or multiples of Operative EBITDA, including risk assumptions consistent with what market participants would use to arrive at fair value.
Inventories	2.7) INVENTORIES (note 11) Inventories are valued using the lower of cost or net realizable value. The cost of inventories includes expenditures incurred in acquiring the inventories, production or conversion costs and other costs incurred in bringing them to their existing location and condition. CEMEX analyzes its inventory balances to determine if, as a result of internal events, such as physical damage, or external events, such as technological changes or market conditions, certain portions of such balances have become obsolete or impaired. When an impairment situation arises, the inventory balance is adjusted to its net realizable value, whereas, if an obsolescence situation occurs, the inventory obsolescence reserve is increased. In both cases, these adjustments are recognized against the results of the period. Advances to suppliers of inventory are presented as part of other current assets.
Property, Machinery and Equipment	2.8) PROPERTY, MACHINERY AND EQUIPMENT (note 14) Property, machinery and equipment are recognized at their acquisition or construction cost, as applicable, less accumulated depreciation and accumulated impairment losses. Depreciation of fixed assets is recognized as part of cost and operating expenses (note 5), and is calculated using the straight-line method over the estimated useful lives of the assets, except for mineral reserves, which are depleted using the units-of-production Years Administrative buildings 35 Industrial buildings 30 Machinery and equipment in plant 17 Ready-mix 9 Office equipment and other assets 6 CEMEX capitalizes, as part of the related cost of fixed assets, interest expense from existing debt during the construction or installation period of significant fixed assets, considering CEMEX’s corporate average interest rate and the average balance of investments in process for the period. All waste removal costs or stripping costs incurred in the operative phase of a surface mine in order to access the mineral reserves are recognized as part of the carrying amount of the related quarries. The capitalized amounts are further amortized over the expected useful life of exposed ore body based on the units of production method. Costs incurred in respect of operating fixed assets that result in future economic benefits, such as an extension in their useful lives, an increase in their production capacity or in safety, as well as those costs incurred to mitigate or prevent environmental damage, are capitalized as part of the carrying amount of the related assets. The capitalized costs are depreciated over the remaining useful lives of such fixed assets. Periodic maintenance on fixed assets is expensed as incurred. Advances to suppliers of fixed assets are presented as part of other long-term accounts receivable. The useful lives and residual values of property, machinery and equipment are reviewed at each reporting date and adjusted if appropriate.
Business Combinations, Goodwill, Other Intangible Assets and Deferred Charges	2.9) BUSINESS COMBINATIONS, GOODWILL AND OTHER INTANGIBLE ASSETS (notes 4.1 and 15) Business combinations are recognized using the acquisition method, by allocating the consideration transferred to assume control of the entity to all assets acquired and liabilities assumed, based on their estimated fair values as of the acquisition date. Intangible assets acquired are identified and recognized at fair value. Any unallocated portion of the purchase price represents goodwill, which is not amortized and is subject to periodic impairment tests (note 2.10). Goodwill may be adjusted for any correction to the preliminary assessment given to the assets acquired and/or liabilities assumed within the twelve-month period after purchase. Costs associated with the acquisition are expensed in the income statement as incurred. CEMEX capitalizes intangible assets acquired, as well as costs incurred in the development of intangible assets, when future economic benefits associated are identified and there is evidence of control over such benefits. Intangible assets are recognized at their acquisition or development cost, as applicable. Indefinite life intangible assets are not amortized since the period in which the benefits associated with such intangibles will terminate cannot be accurately established. Definite life intangible assets are amortized on straight-line basis as part of operating costs and expenses (note 5). Startup costs are recognized in the income statement as they are incurred. Costs associated with research and development activities (“R&D activities”), performed by CEMEX to create products and services, as well as to develop processes, equipment and methods to optimize operational efficiency and reduce costs are recognized in the operating results as incurred. Direct costs incurred in the development stage of computer software for internal use are capitalized and amortized through the operating results over the useful life of the software, which on average is approximately 5 years. Costs incurred in exploration activities such as payments for rights to explore, topographical and geological studies, as well as trenching, among other items incurred to assess the technical and commercial feasibility of extracting a mineral resource, which are not significant to CEMEX, are capitalized when future economic benefits associated with such activities are identified. When extraction begins, these costs are amortized during the useful life of the quarry based on the estimated tons of material to be extracted. When future economic benefits are not achieved, any capitalized costs are subject to impairment. CEMEX’s extraction rights have maximum useful lives that range from 30 to 100 years, depending on the sector and the expected life of the related reserves. As of December 31, 2017, except for extraction rights and/or as otherwise indicated, CEMEX’s intangible assets are amortized on a straight line basis over their useful lives that range on average from 3 to 20 years.
Impairment of Long-lived Assets	2.10) IMPAIRMENT OF LONG LIVED ASSETS (notes 14 and 15) Property, machinery and equipment, intangible assets of definite life and other investments These assets are tested for impairment upon the occurrence of factors such as the occurrence of a significant adverse event, changes in CEMEX’s operating environment or in technology, as well as expectations of lower operating results, in order to determine whether their carrying amounts may not be recovered. An impairment loss is recorded in the income statement for the period within “Other expenses, net,” for the excess of the asset’s carrying amount over its recoverable amount, corresponding to the higher of the fair value less costs to sell the asset, and the asset’s value in use, the latter represented by the NPV of estimated cash flows related to the use and eventual disposal of the asset. The main assumptions utilized to develop estimates of NPV are a discount rate that reflects the risk of the cash flows associated with the assets and the estimations of generation of future income. Those assumptions are evaluated for reasonableness by comparing such discount rates to available market information and by comparing to third-party expectations of industry growth, such as governmental agencies or industry chambers. When impairment indicators exist, for each intangible asset, CEMEX determines its projected revenue streams over the estimated useful life of the asset. In order to obtain discounted cash flows attributable to each intangible asset, such revenues are adjusted for operating expenses, changes in working capital and other expenditures, as applicable, and discounted to NPV using the risk adjusted discount rate of return. The most significant economic assumptions are: a) the useful life of the asset; b) the risk adjusted discount rate of return; c) royalty rates; and d) growth rates. Assumptions used for these cash flows are consistent with internal forecasts and industry practices. The fair values of these assets are very sensitive to changes in such significant assumptions. Certain key assumptions are more subjective than others. In respect of trademarks, CEMEX considers that the most subjective key assumption is the royalty rate. In respect of extraction rights and customer relationships, the most subjective assumptions are revenue growth rates and estimated useful lives. CEMEX validates its assumptions through benchmarking with industry practices and the corroboration of third party valuation advisors. Significant judgment by management is required to appropriately assess the fair values and values in use of the related assets, as well as to determine the appropriate valuation method and select the significant economic assumptions. Impairment of long lived assets — Goodwill Goodwill is tested for impairment when required due to significant adverse changes or at least once a year, during the last quarter of such year. CEMEX determines the recoverable amount of the group of cash-generating units (“CGUs”) to which goodwill balances were allocated, which consists of the higher of such group of CGUs fair value less cost to sell and its value in use, the latter represented by the NPV of estimated future cash flows to be generated by such CGUs to which goodwill was allocated, which are generally determined over periods of 5 years. However, in specific circumstances, when CEMEX considers that actual results for a CGU do not fairly reflect historical performance and most external economic variables provide confidence that a reasonably determinable improvement in the mid-term The geographic operating segments reported by CEMEX (note 4.4), represent CEMEX’s groups of CGUs to which goodwill has been allocated for purposes of testing goodwill for impairment, considering: a) that after the acquisition, goodwill was allocated at the level of the geographic operating segment; b) that the operating components that comprise the reported segment have similar economic characteristics; c) that the reported segments are used by CEMEX to organize and evaluate its activities in its internal information system; d) the homogeneous nature of the items produced and traded in each operative component, which are all used by the construction industry; e) the vertical integration in the value chain of the products comprising each component; f) the type of clients, which are substantially similar in all components; g) the operative integration among components; and h) that the compensation system of a specific country is based on the consolidated results of the geographic segment and not on the particular results of the components. In addition, the country level represents the lowest level within CEMEX at which goodwill is monitored for internal management purposes. Impairment tests are significantly sensitive to the estimation of future prices of CEMEX’s products, the development of operating expenses, local and international economic trends in the construction industry, the long-term growth expectations in the different markets, as well as the discount rates and the growth rates in perpetuity applied. For purposes of estimating future prices, CEMEX uses, to the extent available, historical data plus the expected increase or decrease according to information issued by trusted external sources, such as national construction or cement producer chambers and/or in governmental economic expectations. Operating expenses are normally measured as a constant proportion of revenues, following past experience. However, such operating expenses are also reviewed considering external information sources in respect of inputs that behave according to international prices, such as oil and gas. CEMEX uses specific pre-tax pre-tax
Provisions	2.11) PROVISIONS CEMEX recognizes provisions when it has a legal or constructive obligation resulting from past events, whose resolution would imply cash outflows or the delivery of other resources owned by the Company. As of December 31, 2017 and 2016 some significant proceedings that gave rise to a portion of the carrying amount of CEMEX’s other current and non-current Considering guidance under IFRS, CEMEX recognizes provisions for levies imposed by governments until the obligating event or the activity that triggers the payment of the levy has occurred, as defined in the legislation. Restructuring CEMEX recognizes provisions for restructuring when the restructuring detailed plans have been properly finalized and authorized by management, and have been communicated to the third parties involved and/or affected by the restructuring prior to the statement of financial position date. These provisions may include costs not associated with CEMEX’s ongoing activities. Asset retirement obligations (note 17) Unavoidable obligations, legal or constructive, to restore operating sites upon retirement of long-lived assets at the end of their useful lives are measured at the NPV of estimated future cash flows to be incurred in the restoration process, and are initially recognized against the related assets’ book value. The increase to the assets’ book value is depreciated during its remaining useful life. The increase in the liability related to adjustments to NPV by the passage of time is charged to the line item “Financial income and other items, net.” Adjustments to the liability for changes in estimations are recognized against fixed assets, and depreciation is modified prospectively. These obligations are related mainly to future costs of demolition, cleaning and reforestation, so that quarries, maritime terminals and other production sites are left in acceptable condition at the end of their operation. Costs related to remediation of the environment (notes 17 and 24) Provisions associated with environmental damage represent the estimated future cost of remediation, which are recognized at their nominal value when the time schedule for the disbursement is not clear, or when the economic effect for the passage of time is not significant; otherwise, such provisions are recognized at their discounted values. Reimbursements from insurance companies are recognized as assets only when their recovery is practically certain. In that case, such reimbursement assets are not offset against the provision for remediation costs. Contingencies and commitments (notes 23 and 24) Obligations or losses related to contingencies are recognized as liabilities in the statement of financial position only when present obligations exist resulting from past events that are expected to result in an outflow of resources and the amount can be measured reliably. Otherwise, a qualitative disclosure is included in the notes to the financial statements. The effects of long-term commitments established with third parties, such as supply contracts with suppliers or customers, are recognized in the financial statements on an incurred or accrued basis, after taking into consideration the substance of the agreements. Relevant commitments are disclosed in the notes to the financial statements. The Company does not recognize contingent revenues, income or assets, unless their realization is virtually certain.
Pensions and Other Post-Employment Benefits	2.12) PENSIONS AND OTHER POST-EMPLOYMENT BENEFITS (note 18) Defined contribution pension plans The costs of defined contribution pension plans are recognized in the operating results as they are incurred. Liabilities arising from such plans are settled through cash transfers to the employees’ retirement accounts, without generating future obligations. Defined benefit pension plans and other post-employment benefits The costs associated with employees’ benefits for: a) defined benefit pension plans; and b) other post-employment benefits, basically comprised of health care benefits, life insurance and seniority premiums, granted by CEMEX and/or pursuant to applicable law, are recognized as services are rendered, based on actuarial estimations of the benefits’ present value with the advice of external actuaries. For certain pension plans, CEMEX has created irrevocable trust funds to cover future benefit payments (“plan assets”). These plan assets are valued at their estimated fair value at the statement of financial position date. The actuarial assumptions and accounting policy consider: a) the use of nominal rates; b) a single rate is used for the determination of the expected return on plan assets and the discount of the benefits obligation to present value; c) a net interest is recognized on the net defined benefit liability (liability minus plan assets); and d) all actuarial gains and losses for the period, related to differences between the projected and real actuarial assumptions at the end of the period, as well as the difference between the expected and real return on plan assets, are recognized as part of “Other items of comprehensive income, net” within stockholders’ equity. The service cost, corresponding to the increase in the obligation for additional benefits earned by employees during the period, is recognized within operating costs and expenses. The net interest cost, resulting from the increase in obligations for changes in NPV and the change during the period in the estimated fair value of plan assets, is recognized within “Financial income and other items, net.” The effects from modifications to the pension plans that affect the cost of past services are recognized within operating costs and expenses over the period in which such modifications become effective to the employees or without delay if changes are effective immediately. Likewise, the effects from curtailments and/or settlements of obligations occurring during the period, associated with events that significantly reduce the cost of future services and/or reduce significantly the population subject to pension benefits, respectively, are recognized within operating costs and expenses. Termination benefits Termination benefits, not associated with a restructuring event, which mainly represent severance payments by law, are recognized in the operating results for the period in which they are incurred.
Income Taxes	2.13) INCOME TAXES (note 19) The effects reflected in the income statement for income taxes include the amounts incurred during the period and the amounts of deferred income taxes, determined according to the income tax law applicable to each subsidiary. Consolidated deferred income taxes represent the addition of the amounts determined in each subsidiary by applying the enacted statutory income tax rate to the total temporary differences resulting from comparing the book and taxable values of assets and liabilities, considering tax assets such as loss carryforwards and other recoverable taxes, to the extent that it is probable that future taxable profits will be available against which they can be utilized. The measurement of deferred income taxes at the reporting period reflects the tax consequences that follow the manner in which CEMEX expects to recover or settle the carrying amount of its assets and liabilities. Deferred income taxes for the period represent the difference between balances of deferred income taxes at the beginning and the end of the period. Deferred income tax assets and liabilities relating to different tax jurisdictions are not offset. According to IFRS, all items charged or credited directly in stockholders’ equity or as part of other comprehensive income or loss for the period are recognized net of their current and deferred income tax effects. The effect of a change in enacted statutory tax rates is recognized in the period in which the change is officially enacted. Deferred tax assets are reviewed at each reporting date and are reduced when it is not deemed probable that the related tax benefit will be realized, considering the aggregate amount of self-determined tax loss carryforwards that CEMEX believes will not be rejected by the tax authorities based on available evidence and the likelihood of recovering them prior to their expiration through an analysis of estimated future taxable income. If it is probable that the tax authorities would reject a self-determined deferred tax asset, CEMEX would decrease such asset. When it is considered that a deferred tax asset will not be recovered before its expiration, CEMEX would not recognize such deferred tax asset. Both situations would result in additional income tax expense for the period in which such determination is made. In order to determine whether it is probable that deferred tax assets will ultimately be recovered, CEMEX takes into consideration all available positive and negative evidence, including factors such as market conditions, industry analysis, expansion plans, projected taxable income, carryforward periods, current tax structure, potential changes or adjustments in tax structure, tax planning strategies, future reversals of existing temporary differences. Likewise, CEMEX analyzes its actual results versus the Company’s estimates, and adjusts, as necessary, its tax asset valuations. If actual results vary from CEMEX’s estimates, the deferred tax asset and/or valuations may be affected and necessary adjustments will be made based on relevant information in CEMEX’s income statement for such period. The income tax effects from an uncertain tax position are recognized when is probable that the position will be sustained based on its technical merits and assuming that the tax authorities will examine each position and have full knowledge of all relevant information, and they are measured using a cumulative probability model. Each position has been considered on its own, regardless of its relation to any other broader tax settlement. The high probability threshold represents a positive assertion by management that CEMEX is entitled to the economic benefits of a tax position. If a tax position is considered not probable of being sustained, no benefits of the position are recognized. Interest and penalties related to unrecognized tax benefits are recorded as part of the income tax in the consolidated income statements. The effective income tax rate is determined dividing the line item “Income Tax” by the line item “Earnings before income tax.” This effective tax rate is further reconciled to CEMEX’s statutory tax rate applicable in Mexico (note 19.3). A significant effect in CEMEX’s effective tax rate and consequently in the aforementioned reconciliation of CEMEX’s effective tax rate, relates to the difference between the statutory income tax rate in Mexico of 30% against the applicable income tax rates of each country where CEMEX operates. For the years ended December 31, 2017, 2016 and 2015, the statutory tax rates in CEMEX’s main operations were as follows: Country 2017 2016 2015 Mexico 30.0% 30.0% 30.0% United States 35.0% 35.0% 35.0% United Kingdom 19.3% 20.0% 20.3% France 34.4% 34.4% 38.0% Germany 28.2% 28.2% 29.8% Spain 25.0% 25.0% 28.0% Philippines 30.0% 30.0% 30.0% Colombia 40.0% 40.0% 39.0% Egypt 22.5% 22.5% 22.5% Switzerland 9.6% 9.6% 9.6% Others 7.8% – 39.0% 7.8% – 39.0% 7.8% – 39.0% CEMEX’s current and deferred income tax amounts included in the income statement for the period are highly variable, and are subject, among other factors, to taxable income determined in each jurisdiction in which CEMEX operates. Such amounts of taxable income depend on factors such as sale volumes and prices, costs and expenses, exchange rates fluctuations and interest on debt, among others, as well as to the estimated tax assets at the end of the period due to the expected future generation of taxable gains in each jurisdiction.
Stockholders' Equity	2.14) STOCKHOLDERS’ EQUITY Common stock and additional paid-in These items represent the value of stockholders’ contributions, and include increases related to the capitalization of retained earnings and the recognition of executive compensation programs in CEMEX’s CPOs as well as decreases associated with the restitution of retained earnings. Other equity reserves (note 20.2) Groups the cumulative effects of items and transactions that are, temporarily or permanently, recognized directly to stockholders’ equity, and includes the comprehensive income, which reflects certain changes in stockholders’ equity that do not result from investments by owners and distributions to owners. The most significant items within “Other equity reserves” during the reported periods are as follows: Items of “Other equity reserves” included within other comprehensive income: • Currency translation effects from the translation of foreign subsidiaries, net of: a) exchange results from foreign currency debt directly related to the acquisition of foreign subsidiaries; and b) exchange results from foreign currency related parties balances that are of a non-current • The effective portion of the valuation and liquidation effects from derivative instruments under cash flow hedging relationships, which are recorded temporarily in stockholders’ equity (note 2.6); • Changes in fair value of available-for-sale • Current and deferred income taxes during the period arising from items whose effects are directly recognized in stockholders’ equity. Items of “Other equity reserves” not included in comprehensive income: • Effects related to controlling stockholders’ equity for changes or transactions affecting non-controlling • Effects attributable to controlling stockholders’ equity for financial instruments issued by consolidated subsidiaries that qualify for accounting purposes as equity instruments, such as the interest expense paid on perpetual debentures; • The equity component of securities which are mandatorily or optionally convertible into shares of the Parent Company (notes 2.6 and 16.2). Upon conversion, this amount will be reclassified to common stock and additional paid-in • The cancellation of the Parent Company’s shares held by consolidated entities. Retained earnings (note 20.3) Retained earnings represent the cumulative net results of prior years, net of: a) dividends declared; b) capitalization of retained earnings; and c) restitution of retained earnings when applicable. Non-controlling This caption includes the share of non-controlling
Revenue Recognition	2.15) REVENUE RECOGNITION (note 3) Beginning January 1, 2018, IFRS 15, Revenue from contracts with customers CEMEX’s consolidated net sales represent the value, before tax on sales, of revenues originated by products and services sold by consolidated subsidiaries as a result of their ordinary activities, after the elimination of transactions between related parties, and are quantified at the fair value of the consideration received or receivable, decreased by any trade discounts or volume rebates granted to customers. Revenue from the sale of goods and services is recognized when goods are delivered or services are rendered to customers, there is no condition or uncertainty implying a reversal thereof, and they have assumed the risk of loss. Revenue from trading activities, in which CEMEX acquires finished goods from a third party and subsequently sells the goods to another third-party, are recognized on a gross basis, considering that CEMEX assumes the total risk on the goods purchased, not acting as agent or broker. Revenue and costs related to construction contracts are recognized in the period in which the work is performed by reference to the contract’s stage of completion at the end of the period, considering that the following have been defined: a) each party’s enforceable rights regarding the asset under construction; b) the consideration to be exchanged; c) the manner and terms of settlement; d) actual costs incurred and contract costs required to complete the asset are effectively controlled; and e) it is probable that the economic benefits associated with the contract will flow to the entity. The stage of completion of construction contracts represents the proportion that contract costs incurred for work performed to date bear to the estimated total contract costs or the surveys of work performed or the physical proportion of the contract work completed, whichever better reflects the percentage of completion under the specific circumstances. Progress payments and advances received from customers do not reflect the work performed and are recognized as a short or long term advanced payments, as appropriate.
Cost of Sales and Operating Expenses	2.16) COST OF SALES AND OPERATING EXPENSES (note 5) Cost of sales represents the production cost of inventories at the moment of sale. Such cost of sales includes depreciation, amortization and depletion of assets involved in production, expenses related to storage in production plants and freight expenses of raw material in plants and delivery expenses of CEMEX’s ready-mix Administrative expenses represent the expenses associated with personnel, services and equipment, including depreciation and amortization, related to managerial activities and back office for the Company’s management. Sales expenses represent the expenses associated with personnel, services and equipment, including depreciation and amortization, involved specifically in sales activities. Distribution and logistics expenses refer to expenses of storage at points of sales, including depreciation and amortization, as well as freight expenses of finished products between plants and points of sale and freight expenses between points of sales and the customers’ facilities.
Executive Share-Based Compensation	2.17) EXECUTIVE SHARE-BASED COMPENSATION (note 21) Share-based payments to executives are defined as equity instruments when services received from employees are settled by delivering shares of the Parent Company and/or a subsidiary; or as liability instruments when CEMEX commits to make cash payments to the executives on the exercise date of the awards based on changes in the Parent Company and/or subsidiary’s own stock (intrinsic value). The cost of equity instruments represents their estimated fair value at the date of grant and is recognized in the income statement during the period in which the exercise rights of the employees become vested. In respect of liability instruments, these instruments are valued at their estimated fair value at each reporting date, recognizing the changes in fair value through the operating results. CEMEX determines the estimated fair value at the date of grant of stock compensation programs with performance conditions using Monte Carlo simulations.
Emission Rights	2.18) EMISSION RIGHTS In certain countries where CEMEX operates, such as EU countries, mechanisms aimed at reducing carbon dioxide emissions (“CO 2 2 2 2 2 2 CEMEX does not maintain emission rights, CERs and/or enter into forward transactions with trading purposes. CEMEX accounts for the effects associated with CO 2 • Certificates received for free are not recognized in the statement of financial position. Revenues from the sale of any surplus of certificates are recognized by decreasing cost of sales. In forward sale transactions, revenues are recognized upon physical delivery of the emission certificates. • Certificates and/or CERs acquired to hedge current CO 2 • CEMEX accrues a provision against cost of sales when the estimated annual emissions of CO 2 • CERs received from the UNFCCC are recognized as intangible assets at their development cost, which are attributable mainly to legal expenses incurred in the process of obtaining such CERs. During 2017, 2016 and 2015, there were no sales of emission rights to third parties. In addition, in certain countries, the environmental authorities impose levies per ton of CO 2
Concentration of Credit	2.19) CONCENTRATION OF CREDIT CEMEX sells its products primarily to distributors in the construction industry, with no specific geographic concentration within the countries in which CEMEX operates. As of and for the years ended December 31, 2017, 2016 and 2015, no single customer individually accounted for a significant amount of the reported amounts of sales or in the balances of trade receivables. In addition, there is no significant concentration of a specific supplier relating to the purchase of raw materials.
Newly Issued IFRS Not Yet Adopted	2.20) NEWLY ISSUED IFRS NOT YET ADOPTED There are a number of IFRS issued as of the date of issuance of these financial statements which have not yet been adopted, described as follow: IFRS 9, Financial Instruments: classification and measurement (“IFRS 9”) IFRS 9 sets forth the guidance relating to the classification and measurement of financial assets and liabilities, the accounting for expected credit losses of financial assets and commitments to extend credits, as well as the requirements for hedge accounting; and will replace IAS 39, Financial Instruments: recognition and measurement In addition, under the new impairment model based on expected credit losses, impairment losses for the entire lifetime of financial assets, including trade accounts receivable, are recognized on initial recognition, and at each subsequent reporting period, even in the absence of a credit event or if the loss has not yet been incurred, considering for their measurement past events and current conditions, as well as reasonable and supportable forecasts affecting collectability. Changes in the allowance for doubtful accounts under the new expected credit loss model upon adoption of IFRS 9 on January 1, 2018 will be recognized through equity. In this regard, CEMEX developed an expected credit loss model applicable to its trade accounts receivable that considers the historical performance, as well as the credit risk and expected developments for each group of customers, ready for the prospective adoption of IFRS 9 on January 1, 2018. The preliminary effects for adoption of IFRS 9 on January 1, 2018 related to the new expected credit loss model which do not represent any significant impact on CEMEX’s operating results, financial situation and compliance of contractual obligations (financial restrictions), represent an estimated increase in the allowance for doubtful accounts as of December 31, 2017 of Ps519 that will be recognized against equity. In connection with hedge accounting under IFRS 9, among other changes, there is a relief for entities in performing: a) the retrospective effectiveness test at inception of the hedging relationship; and b) the requirement to maintain a prospective effectiveness ratio between 0.8 and 1.25 at each reporting date for purposes of sustaining the hedging designation, both requirements of IAS 39. Under IFRS 9, a hedging relationship can be established to the extent the entity considers, based on the analysis of the overall characteristics of the hedging and hedged items, that the hedge will be highly effective in the future and the hedge relationship at inception is aligned with the entity’s reported risk management strategy. Nonetheless, IFRS 9 maintains the same hedging accounting categories of cash flow hedge, fair value hedge and hedge of a net investment established in IAS 39, as well as the requirement of recognizing the ineffective portion of a cash flow hedge immediately in the income statement. CEMEX does not expect any significant effect upon adoption of the new hedge accounting rules under IFRS 9 beginning January 1, 2018. Considering the prospective adoption of IFRS 9 as of January 1, 2018, according to the options provided in the standard, there may be lack of comparability beginning January 1, 2018, with the information of impairment of financial assets disclosed in prior years, however, the effects are not significant. IFRS 15, Revenues from contracts with customers (“IFRS 15”) Under IFRS 15, an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services, following a five step model: Step 1: Identify the contract(s) with a customer (agreement that creates enforceable rights and obligations); Step 2: Identify the different performance obligations (promises) in the contract and account for those separately; Step 3: Determine the transaction price (amount of consideration an entity expects to be entitled in exchange for transferring promised goods or services); Step 4: Allocate the transaction price to each performance obligation based on the relative stand-alone selling prices of each distinct good or service; and Step 5: Recognize revenue when (or as) the entity satisfies a performance obligation by transferring control of a promised good or service to the customer. A performance obligation may be satisfied at a point in time (typically for the sale of goods) or over time (typically for the sale of services and construction contracts). IFRS 15 also includes disclosure requirements to provide comprehensive information about the nature, amount, timing and uncertainty of revenue and cash flows arising from the entity’s contracts with customers. IFRS 15 is effective on January 1, 2018 and will supersede all existing guidance on revenue recognition. Beginning January 1, 2018, CEMEX will adopt IFRS 15 using the full retrospective approach, which represents the restatement of the financial statements of prior years. CEMEX started in 2015 the evaluation of the impacts of IFRS 15 on the accounting and disclosures of its revenues. As of December 31, 2017, CEMEX has analyzed its contracts with customers in all the countries in which it operates in order to review the different performance obligations and other promises (discounts, loyalty programs, rebates, etc.) included in such contracts, among other aspects, aimed to determine the differences in the accounting recognition of revenue with respect to current IFRS and concluded the theoretical assessment. In addition, key personnel were trained in the new standard with the support of external experts and an online training course was implemented. Moreover, CEMEX also concluded the quantification of the adjustments that are necessary to present prior year’s information under IFRS 15 beginning in 2018. The adjustments determined in CEMEX’s revenue recognition will not generate any material impact on CEMEX’s operating results, financial situation and compliance of contractual obligations (financial restrictions). Among other minor effects, the main changes under IFRS 15 as they apply to CEMEX refer to: a) several reclassifications that are required to comply with IFRS 15 new accounts in the statement of financial position aimed to recognize contract assets (costs to obtain a contract) and contract liabilities (deferred revenue for promises not yet fulfilled); b) rebates and/or discounts offered to customers in a sale transaction that are redeemable by the customer in a subsequent purchase transaction, are considered separate performance obligations, rather than future costs, and a portion of the sale price of such transaction allocated to these promises should be deferred to revenue until the promise is redeemed or expires; and c) awards (points) offer to customers through their purchases under loyalty programs that are later redeemable for goods or services, also represent separate performance obligations, rather than future costs, and a portion of the sale price of such transactions allocated to these points should be deferred to revenue until the points are redeemed or expire. These reclassifications and adjustments are not expected to be material. Considering the full retrospective adoption of IFRS 15 beginning January 1, 2018, according to the options considered in the standard, there will not be lack of comparability of the financial information prepared in prior years. IFRS 16, Leases (“IFRS 16”) IFRS 16 defines leases as any contract or part of a contract that conveys to the lessee the right to use an asset for a period of time in exchange for consideration and the lessee directs the use of the identified asset throughout that period. In summary, IFRS 16 introduces a single lessee accounting model, and requires a lessee to recognize, for all leases with a term of more than 12 months, unless the underlying asset is of low value, assets for the right-of-use right-of-use right-of-use As of December 31, 2017, CEMEX has concluded an assessment of its main outstanding lease contracts and other contracts that may have embedded the use of an asset, in order to inventory the most relevant characteristics of such contracts (types of assets, committed payments, maturity dates, renewal clauses, etc.). During the first quarter of 2018, CEMEX expects to define its future policy under IFRS 16 in connection with the exception for short-term leases and low-value “right-of-use” CEMEX does not expect any significant effect on its operation results, financial situation and compliance with contractual obligations (financial restrictions) due to the adoption effects. If retrospective adoption of IFRS 16 beginning January 1, 2019 is applied, according to the options considered in the standard, there would not be lack of comparability of the financial information prepared in prior years. IFRIC 23, Uncertainty over income tax treatments (“IFRIC 23”) IFRIC 23 clarifies the accounting for uncertainties in income taxes. Among other aspects, when an entity concludes that it is not probable that a particular tax treatment is accepted, the entity has to use the most likely amount or the expected value of the tax treatment when determining taxable profit (tax loss), tax bases, unused tax losses, unused tax credits and tax rates. The decision should be based on which method provides better predictions of the resolution of the uncertainty. IFRIC 23 is effective beginning January 1, 2019. Considering CEMEX’s current policy for uncertain tax positions (note 2.13) CEMEX does not expect any significant effect from the adoption of IFRIC 23.

Significant Accounting Polici35

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Summary of Foreign Exchange Rates	The most significant closing exchange rates and the approximate average exchange rates for statement of financial position accounts and statement of operations accounts as of December 31, 2017, 2016 and 2015, were as follows: 2017 2016 2015 Currency Closing Average Closing Average Closing Average Dollar 19.6500 18.8800 20.7200 18.7200 17.2300 15.9800 Euro 23.5866 21.4122 21.7945 20.6564 18.7181 17.6041 British Pound Sterling 26.5361 24.4977 25.5361 25.0731 25.4130 24.3638 Colombian Peso 0.0066 0.0064 0.0069 0.0062 0.0055 0.0058 Egyptian Pound 1.1082 1.0620 1.1234 1.8261 2.2036 2.0670 Philippine Peso 0.3936 0.3747 0.4167 0.3927 0.3661 0.3504
Summary of Maximum Average Useful Lives of Fixed Assets	As of December 31, 2017, the average useful lives by category of fixed assets were as follows: Years Administrative buildings 35 Industrial buildings 30 Machinery and equipment in plant 17 Ready-mix 9 Office equipment and other assets 6
Summary of Statutory Tax Rates	For the years ended December 31, 2017, 2016 and 2015, the statutory tax rates in CEMEX’s main operations were as follows: Country 2017 2016 2015 Mexico 30.0% 30.0% 30.0% United States 35.0% 35.0% 35.0% United Kingdom 19.3% 20.0% 20.3% France 34.4% 34.4% 38.0% Germany 28.2% 28.2% 29.8% Spain 25.0% 25.0% 28.0% Philippines 30.0% 30.0% 30.0% Colombia 40.0% 40.0% 39.0% Egypt 22.5% 22.5% 22.5% Switzerland 9.6% 9.6% 9.6% Others 7.8% – 39.0% 7.8% – 39.0% 7.8% – 39.0%

Revenues and Construction Con36

Revenues and Construction Contracts (Tables)	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Summary of Net Sales, After Sales and Eliminations Between Related Parties Resulting from Consolidation	For the years ended December 31, 2017, 2016 and 2015, net sales, after eliminations between related parties resulting from consolidation, were as follows: 2017 2016 2015 From the sale of goods associated to CEMEX’s main activities 1 Ps 246,820 239,696 211,258 From the sale of services 2 3,313 3,110 2,811 From the sale of other goods and services 3 7,998 7,139 5,230 Ps 258,131 249,945 219,299 1 Includes in each period those revenues generated under construction contracts that are presented in the table below. 2 Refers mainly to revenues generated by Neoris N.V. and its subsidiaries, involved in providing information technology solutions and services. 3 Refers mainly to revenues generated by subsidiaries not individually significant operating in different lines of business.
Disclosure of recognised revenue from construction contracts	For 2017, 2016 and 2015, revenues and costs related to construction contracts in progress were as follows: Recognized 1 2017 2016 2015 Revenue from construction contracts included in consolidated net sales 2 Ps 5,508 992 1,033 994 Costs incurred in construction contracts included in consolidated cost of sales 3 (4,840 ) (1,205 ) (1,133 ) (919 ) Construction contracts gross operating profit (loss) Ps 668 (213 ) (100 ) 75 1 Revenues and costs recognized from inception of the contracts until December 31, 2017 in connection with those projects still in progress. 2 Revenues from construction contracts during 2017, 2016 and 2015, were mainly obtained in Mexico and Colombia. 3 Refers to actual costs incurred during the periods. The oldest contract in progress as of December 31, 2017 started in 2010.

Business Combinations, Discon37

Business Combinations, Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment (Tables)	12 Months Ended
	Dec. 31, 2017
Summary of Consolidating Statements of Operations by Geographic Operating Segments	Selected information of the consolidated statements of operations by geographic operating segment for the years ended December 31, 2017, 2016 and 2015 was as follows: 2017 Net sales Less: Net sales Operating Less: Operating Other Financial Other Mexico Ps 58,442 (1,075 ) 57,367 21,215 2,246 18,969 (687 ) (409 ) (534 ) United States 65,536 — 65,536 10,652 6,200 4,452 3,202 (631 ) (177 ) Europe United Kingdom 20,179 — 20,179 2,763 997 1,766 450 (77 ) (397 ) France 16,162 — 16,162 855 549 306 (129 ) (61 ) 18 Germany 10,056 (1,339 ) 8,717 743 509 234 (11 ) (14 ) (63 ) Spain 6,870 (990 ) 5,880 344 638 (294 ) (711 ) (34 ) 12 Poland 5,552 (74 ) 5,478 647 361 286 (140 ) (30 ) (8 ) Rest of Europe 9,439 (864 ) 8,575 1,463 688 775 (131 ) (24 ) 71 South, Central America and the Caribbean (“SAC”) Colombia 1 10,685 — 10,685 2,166 507 1,659 (642 ) (129 ) (36 ) Panama 1 5,112 (98 ) 5,014 2,007 319 1,688 (20 ) (5 ) 7 Costa Rica 1 2,805 (379 ) 2,426 1,000 99 901 — (5 ) 29 Caribbean TCL 3 4,332 (49 ) 4,283 1,059 610 449 (139 ) (215 ) (25 ) Rest of SAC 1 11,716 (872 ) 10,844 2,602 449 2,153 (1,069 ) (23 ) (12 ) Asia, Middle East and Africa (“AMEA”) Philippines 2 8,296 — 8,296 1,394 528 866 89 (3 ) (24 ) Egypt 3,862 — 3,862 594 299 295 (210 ) (60 ) 574 Rest of AMEA 13,516 — 13,516 1,855 363 1,492 (174 ) (28 ) 12 Others 22,514 (11,203 ) 11,311 (2,796 ) 630 (3,426 ) (3,493 ) (17,553 ) 4,169 Continuing operations 275,074 (16,943 ) 258,131 48,563 15,992 32,571 (3,815 ) (19,301 ) 3,616 Discontinued operations 1,550 (1 ) 1,549 75 57 18 14 (3 ) — Total Ps 276,624 (16,944 ) 259,680 48,638 16,049 32,589 (3,801 ) (19,304 ) 3,616 2016 Net sales Less: Net sales Operating Less: Operating Other Financial Other Mexico Ps 53,579 (848 ) 52,731 19,256 2,390 16,866 (608 ) (339 ) 2,695 United States 66,554 — 66,554 10,973 6,400 4,573 2,919 (487 ) (212 ) Europe United Kingdom 21,153 — 21,153 3,606 1,047 2,559 711 (63 ) (393 ) France 14,535 — 14,535 669 484 185 (110 ) (53 ) 2 Germany 9,572 (1,385 ) 8,187 553 464 89 (64 ) (15 ) (85 ) Spain 6,563 (841 ) 5,722 814 663 151 (112 ) (37 ) (9 ) Poland 4,799 (88 ) 4,711 579 330 249 6 (11 ) 123 Rest of Europe 7,935 (541 ) 7,394 1,141 660 481 (103 ) (33 ) 77 South, Central America and the Caribbean (“SAC”) Colombia 1 12,415 (1 ) 12,414 3,975 489 3,486 (575 ) 46 38 Panama 1 4,906 (124 ) 4,782 2,170 340 1,830 (7 ) (27 ) 5 Costa Rica 1 2,818 (351 ) 2,467 1,127 116 1,011 (23 ) (11 ) 27 Rest of SAC 1 11,378 (778 ) 10,600 2,875 437 2,438 (1,226 ) (28 ) (182 ) Asia, Middle East and Africa (“AMEA”) Philippines 2 9,655 — 9,655 2,687 530 2,157 21 (1 ) (24 ) Egypt 6,950 (5 ) 6,945 2,454 539 1,915 (213 ) (78 ) (253 ) Rest of AMEA 11,858 (12 ) 11,846 1,617 299 1,318 (112 ) (27 ) 27 Others 18,846 (8,597 ) 10,249 (2,962 ) 803 (3,765 ) (2,174 ) (20,323 ) 2,653 Continuing operations 263,516 (13,571 ) 249,945 51,534 15,991 35,543 (1,670 ) (21,487 ) 4,489 Discontinued operations 9,186 (207 ) 8,979 1,232 693 539 (2 ) (10 ) (47 ) Total Ps 272,702 (13,778 ) 258,924 52,766 16,684 36,082 (1,672 ) (21,497 ) 4,442 2015 Net sales Less: Net sales Operating Less: Operating Other Financial Other Mexico Ps 50,260 (5,648 ) 44,612 15,362 2,399 12,963 (684 ) (210 ) 915 United States 56,846 (18 ) 56,828 7,985 5,629 2,356 234 (437 ) (144 ) Europe United Kingdom 20,227 — 20,227 2,705 1,004 1,701 (147 ) (95 ) (299 ) France 12,064 — 12,064 670 438 232 (8 ) (48 ) (10 ) Germany 8,285 (1,276 ) 7,009 542 389 153 49 (14 ) (61 ) Spain 6,151 (755 ) 5,396 1,031 604 427 (735 ) (72 ) (2 ) Poland 4,445 (108 ) 4,337 598 295 303 18 (54 ) 33 Rest of Europe 7,457 (660 ) 6,797 1,110 739 371 (187 ) (23 ) (122 ) South, Central America and the Caribbean (“SAC”) Colombia 1 11,562 (2 ) 11,560 4,041 500 3,541 (88 ) (50 ) (570 ) Panama 1 4,599 (68 ) 4,531 1,869 298 1,571 (180 ) (13 ) 2 Costa Rica 1 2,658 (229 ) 2,429 1,096 102 994 (2 ) (9 ) 2 Rest of SAC 1 12,177 (1,988 ) 10,189 2,295 445 1,850 (87 ) (22 ) (119 ) Asia, Middle East and Africa (“AMEA”) Philippines 2 8,436 (4 ) 8,432 2,206 447 1,759 (12 ) (20 ) 19 Egypt 6,923 (5 ) 6,918 1,777 536 1,241 (254 ) (115 ) 114 Rest of AMEA 9,929 — 9,929 1,250 244 1,006 (53 ) (23 ) (1 ) Others 16,793 (8,752 ) 8,041 (3,003 ) 589 (3,592 ) (896 ) (18,579 ) (1,090 ) Continuing operations 238,812 (19,513 ) 219,299 41,534 14,658 26,876 (3,032 ) (19,784 ) (1,333 ) Discontinued operations 11,944 (56 ) 11,888 1,201 978 223 23 (17 ) 66 Total Ps 250,756 (19,569 ) 231,187 42,735 15,636 27,099 (3,009 ) (19,801 ) (1,267 ) 1 CEMEX Latam Holdings, S.A. (“CLH”), entity incorporated in Spain, trades its ordinary shares in the Colombian Stock Exchange. CLH is the indirect holding company of CEMEX’s operations in Colombia, Panama, Costa Rica, Guatemala, Nicaragua, El Salvador and Brazil. At year end 2017 and 2016, there is a non-controlling 2 CEMEX’s operations in the Philippines are conducted through CEMEX Holdings Philippines, Inc. (“CHP”), subsidiary incorporated in the Philippines which since July 2016 trades its ordinary shares in the Philippines Stock Exchange under the symbol CHP. As of December 31, 2017 and 2016, there is a non-controlling 3 As mentioned in note 4.1, in February 2017, CEMEX’s acquired a controlling interest in TCL, which main operations are located in Trinidad and Tobago (“T&T”), Jamaica and Barbados. TCL shares trade in the T&T stock exchange. As of December 31, 2017, there is a non-controlling
Summary of Balance sheet Information by Geographic Segment	As of December 31, 2017 and 2016, selected statement of financial position information by geographic segment was as follows: 2017 Equity Other Total Total Net assets Additions to 1 Mexico Ps 241 71,280 71,521 23,574 47,947 2,133 United States 1,573 266,769 268,342 32,366 235,976 3,498 Europe United Kingdom 107 34,774 34,881 24,160 10,721 1,010 France 1,055 18,481 19,536 7,360 12,176 372 Germany 85 9,010 9,095 6,848 2,247 441 Spain — 25,731 25,731 3,543 22,188 553 Poland 9 5,477 5,486 3,086 2,400 230 Rest of Europe 158 16,123 16,281 3,627 12,654 321 South, Central America and the Caribbean Colombia — 24,406 24,406 11,307 13,099 1,178 Panama — 7,232 7,232 1,029 6,203 152 Costa Rica — 1,869 1,869 646 1,223 42 Caribbean TCL — 11,004 11,004 4,917 6,087 584 Rest of South, Central America and the Caribbean 31 11,298 11,329 4,366 6,963 357 Asia, Middle East and Africa Philippines 6 11,548 11,554 2,617 8,937 518 Egypt 1 4,602 4,603 1,776 2,827 418 Rest of Asia, Middle East and Africa — 13,671 13,671 8,027 5,644 449 Others 5,306 24,356 29,662 217,914 (188,252 ) 163 Continuing operations 8,572 557,631 566,203 357,163 209,040 12,419 Assets held for sale and related liabilities (note 12.1) — 1,378 1,378 — 1,378 — Total Ps 8,572 559,009 567,581 357,163 210,418 12,419 2016 Equity Other Total Total Net assets Additions to 1 Mexico Ps 490 70,012 70,502 20,752 49,750 1,651 United States 1,587 287,492 289,079 30,118 258,961 3,760 Europe United Kingdom 104 32,469 32,573 22,914 9,659 599 France 909 16,855 17,764 6,829 10,935 379 Germany 74 8,396 8,470 6,694 1,776 507 Spain 13 27,251 27,264 3,206 24,058 490 Poland 10 5,036 5,046 2,072 2,974 181 Rest of Europe 270 15,345 15,615 3,221 12,394 258 South, Central America and the Caribbean Colombia — 26,532 26,532 11,548 14,984 3,633 Panama — 7,958 7,958 1,144 6,814 126 Costa Rica — 1,928 1,928 691 1,237 73 Rest of South, Central America and the Caribbean 28 12,517 12,545 4,133 8,412 441 Asia, Middle East and Africa Philippines 6 12,308 12,314 2,696 9,618 341 Egypt 1 5,512 5,513 2,907 2,606 381 Rest of Asia, Middle East and Africa — 12,347 12,347 6,994 5,353 394 Others 6,996 26,253 33,249 276,269 (243,020 ) 65 Continuing operations 10,488 568,211 578,699 402,188 176,511 13,279 Assets held for sale and related liabilities (note 12.1) — 21,029 21,029 815 20,214 — Total Ps 10,488 589,240 599,728 403,003 196,725 13,279 1 In 2017 and 2016, the column “Additions to fixed assets” includes capital expenditures of Ps9,514 and Ps12,676, respectively (note 14).
Summary of Net Sales by Product and Geographic Segment	Net sales by product and geographic segment for the years ended December 31, 2017, 2016 and 2015 were as follows: 2017 Cement Concrete Aggregates Others Eliminations Net sales Mexico Ps 42,195 14,672 3,416 11,211 (14,127 ) 57,367 United States 27,804 35,400 14,436 6,235 (18,339 ) 65,536 Europe United Kingdom 4,879 7,459 7,758 8,067 (7,984 ) 20,179 France — 13,367 6,373 205 (3,783 ) 16,162 Germany 3,595 4,668 2,134 2,335 (4,015 ) 8,717 Spain 5,499 944 259 676 (1,498 ) 5,880 Poland 3,230 2,532 701 226 (1,211 ) 5,478 Rest of Europe 6,236 2,715 1,055 462 (1,893 ) 8,575 South, Central America and the Caribbean Colombia 7,043 4,024 1,224 1,960 (3,566 ) 10,685 Panama 3,876 1,725 452 180 (1,219 ) 5,014 Costa Rica 2,095 386 122 120 (297 ) 2,426 Caribbean TCL 4,097 29 19 215 (77 ) 4,283 Rest of South, Central America and the Caribbean 11,412 1,308 268 307 (2,451 ) 10,844 Asia, Middle East and Africa Philippines 8,093 67 159 52 (75 ) 8,296 Egypt 3,347 479 16 173 (153 ) 3,862 Rest of Asia, Middle East and Africa 928 11,078 2,875 2,148 (3,513 ) 13,516 Others — — — 22,515 (11,204 ) 11,311 Continuing operations 134,329 100,853 41,267 57,087 (75,405 ) 258,131 Discontinued operations — 525 340 687 (3 ) 1,549 Total Ps 134,329 101,378 41,607 57,774 (75,408 ) 259,680 2016 Cement Concrete Aggregates Others Eliminations Net sales Mexico Ps 37,647 13,664 3,156 11,773 (13,509 ) 52,731 United States 28,585 35,843 14,565 7,107 (19,546 ) 66,554 Europe United Kingdom 5,267 7,830 8,195 7,889 (8,028 ) 21,153 France — 11,883 5,640 278 (3,266 ) 14,535 Germany 3,416 4,539 2,112 2,262 (4,142 ) 8,187 Spain 5,478 823 196 472 (1,247 ) 5,722 Poland 2,811 2,237 579 219 (1,135 ) 4,711 Rest of Europe 5,286 2,254 911 338 (1,395 ) 7,394 South, Central America and the Caribbean Colombia 8,814 4,522 1,364 1,761 (4,047 ) 12,414 Panama 3,794 1,577 413 139 (1,141 ) 4,782 Costa Rica 2,144 390 179 126 (372 ) 2,467 Rest of South, Central America and the Caribbean 10,998 1,526 322 298 (2,544 ) 10,600 Asia, Middle East and Africa Philippines 9,405 143 164 70 (127 ) 9,655 Egypt 6,076 943 26 217 (317 ) 6,945 Rest of Asia, Middle East and Africa 961 9,535 2,519 1,379 (2,548 ) 11,846 Others — — — 18,851 (8,602 ) 10,249 Continuing operations 130,682 97,709 40,341 53,179 (71,966 ) 249,945 Discontinued operations 422 1,366 785 6,665 (259 ) 8,979 Total Ps 131,104 99,075 41,126 59,844 (72,225 ) 258,924 2015 Cement Concrete Aggregates Others Eliminations Net sales Mexico Ps 30,384 13,163 2,860 9,956 (11,751 ) 44,612 United States 23,358 30,129 11,914 7,994 (16,567 ) 56,828 Europe United Kingdom 4,705 7,729 7,614 7,859 (7,680 ) 20,227 France — 10,026 4,410 224 (2,596 ) 12,064 Germany 3,098 3,749 1,790 2,103 (3,731 ) 7,009 Spain 5,265 721 150 392 (1,132 ) 5,396 Poland 2,630 1,916 489 197 (895 ) 4,337 Rest of Europe 5,075 1,945 728 562 (1,513 ) 6,797 South, Central America and the Caribbean Colombia 8,158 4,428 1,329 1,345 (3,700 ) 11,560 Panama 3,368 1,424 383 172 (816 ) 4,531 Costa Rica 2,092 367 138 109 (277 ) 2,429 Rest of South, Central America and the Caribbean 9,633 2,058 376 451 (2,329 ) 10,189 Asia, Middle East and Africa Philippines 8,270 115 96 62 (111 ) 8,432 Egypt 6,052 975 36 236 (381 ) 6,918 Rest of Asia, Middle East and Africa 880 7,956 1,931 1,115 (1,953 ) 9,929 Others — — — 16,811 (8,770 ) 8,041 Continuing operations 112,968 86,701 34,244 49,588 (64,202 ) 219,299 Discontinued operations 1,046 3,877 1,928 5,474 (437 ) 11,888 Total Ps 114,014 90,578 36,172 55,062 (64,639 ) 231,187
Trinidad Cement Limited [member]
Summary of Purchase Price Allocation	As of December 31, 2017, after significantly concluding the allocation of TCL’s fair value to the assets acquired and liabilities assumed, the statement of financial position of TCL at the acquisition date of February 1, 2017 was as follows: As of February 1, 2017 Current assets US$ 84 Property, machinery and equipment 331 Intangible assets and other non-current 110 Total assets 525 Current liabilities (includes debt of US$47) 122 Non-current 154 Total liabilities 276 Net assets US$ 249 Non-controlling 70 Controlling interest net assets US$ 179
Croatia [Member]
Summary of Condensed Combined Financial Information of Balance Sheet	As of December 31, 2016, the condensed information of the statement of financial position of the Croatian Operations was as follows: 2016 Current assets Ps 573 Property, machinery and equipment, net 3,023 Intangible assets, net and other non-current 568 Total assets 4,164 Current liabilities 539 Non-current 112 Total liabilities 651 Net assets Ps 3,513
Summary of Condensed Combined Information of the Statement of Operations of Discontinued Operations	For the years 2016 and 2015, the condensed information of the income statement of the Croatian Operations was as follows: 2016 2015 Sales Ps 1,853 1,892 Cost of sales and operating expenses (1,629 ) (1,665 ) Other products (expenses), net (31 ) 13 Financial expenses, net and others (24 ) (35 ) Earnings before income tax 169 205 Income tax (29 ) (43 ) Net income Ps 140 162
Pacific Northwest Materials And Concrete Pipe Business [Member] | United States, Bangladesh, Thailand, Austria, and Hungary [member]
Summary of Condensed Combined Financial Information of Balance Sheet	Selected condensed combined financial information of the statement of financial position at this date of such operations was as follows: 2016 Current assets Ps 1,146 Property, machinery and equipment, net 4,188 Intangible assets, net and other non-current 6,835 Total assets 12,169 Current liabilities (99 ) Non-current (336 ) Total liabilities (435 ) Net assets Ps 11,734
Summary of Condensed Combined Information of the Statement of Operations of Discontinued Operations	The following table presents condensed combined information of the statement of operations of CEMEX’s discontinued operations in the Pacific Northwest Materials Business in the United States for the six-months one-month ten-month 2017 2016 2015 Sales Ps 1,549 8,979 11,888 Cost of sales and operating expenses (1,531 ) (8,440 ) (11,665 ) Other products (expenses), net 14 (2 ) 23 Financial expenses, net and others (3 ) (57 ) 49 Earnings before income tax 29 480 295 Income tax — (101 ) 6 Net income 29 379 301 Net income of non-controlling — — (15 ) Net income of controlling interest Ps 29 379 286
Eagle Materials Inc And Grupo Cementos de Chihuahua SAB De C.V. [member]
Summary of Combined Statement of Operations Information of the Net Assets Sold	For the years 2017, 2016 and 2015, selected combined statement of operations information of the net assets sold to GCC on November 18, 2016 and those to Eagle Materials was as follows: 2017 2016 2015 Net sales Ps 86 3,322 3,538 Operating costs and expenses (71 ) (2,800 ) (2,795 ) Operating earnings before other expenses, net Ps 15 522 743
Holcim Ltd. [member]
Summary of Purchase Price Allocation	The purchase price allocation of these acquisitions as of January 1, 2015 was as follows: Czech Republic Spain Total Current assets Ps 231 59 290 Property, machinery and equipment 1,419 2,004 3,423 Other non-current 270 — 270 Intangible assets 590 2 592 Fair value of assets acquired 2,510 2,065 4,575 Current liabilities 117 57 174 Non-current 344 114 458 Fair value of liabilities assumed 461 171 632 Fair value of net assets acquired Ps 2,049 1,894 3,943

Operating Expenses, Depreciat38

Operating Expenses, Depreciation and Amortization (Tables)	12 Months Ended
	Dec. 31, 2017
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Summary of Consolidated Operating Expense	Consolidated operating expenses during 2017, 2016 and 2015 by function are as follows: 2017 2016 2015 Administrative expenses 1 Ps 21,081 20,750 18,653 Selling expenses 6,450 6,974 5,883 Distribution and logistics expenses 28,495 26,245 23,374 Ps 56,026 53,969 47,910 1 The Technology and Energy departments in CEMEX undertake all significant R&D activities as part of their daily activities. In 2017, 2016 and 2015, total combined expenses of these departments recognized within administrative expenses were Ps754 (US$38), Ps712 (US$38) and Ps660 (US$41), respectively.
Summary of Depreciation and Amortization Recognized	Depreciation and amortization recognized during 2017, 2016 and 2015 are detailed as follows: 2017 2016 2015 Depreciation and amortization expense included in cost of sales Ps 14,146 14,180 13,154 Depreciation and amortization expense included in administrative, selling and distribution and logistics expenses 1,846 1,811 1,504 Ps 15,992 15,991 14,658

Other Expenses, Net (Tables)

Other Expenses, Net (Tables)	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Summary of Other Expenses	The detail of the line item “Other expenses, net” in 2017, 2016 and 2015 was as follows: 2017 2016 2015 Impairment losses 1 Ps (2,936 ) (2,518 ) (1,517 ) Restructuring costs 2 (843 ) (778 ) (845 ) Charitable contributions (127 ) (93 ) (60 ) Results from the sale of assets and others, net 3 91 1,719 (610 ) Ps (3,815 ) (1,670 ) (3,032 ) 1 In 2017, 2016 and 2015, among others, includes impairment losses of fixed assets for approximately Ps984, Ps1,899 and Ps1,145, respectively, as well as impairment losses of goodwill in 2017 for Ps1,920 (notes 13.2, 14 and 15). 2 In 2017, 2016 and 2015, restructuring costs mainly refer to severance payments. 3 In 2017, includes an expense in Colombian pesos equivalent to approximately Ps491 (US$25) for a penalty imposed by the Commerce and Industry Superintendence in Colombia in connection with a market investigation (note 24.2).

Financial Income and Other It40

Financial Income and Other Items, Net (Tables)	12 Months Ended
	Dec. 31, 2017
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Summary of Financial Income and Other Items	The detail of the line item “Financial income and other items, net” in 2017, 2016 and 2015 was as follows: 2017 2016 2015 Results in the sale of associates and remeasurement of previously held interest before change in control of associates (notes 4.1 and 13.1) Ps 4,164 — — Financial income 338 402 318 Results from financial instruments, net (notes 13.2 and 16.4) 161 113 (2,729 ) Foreign exchange results (26 ) 5,004 1,970 Effects of NPV on assets and liabilities and others, net (1,021 ) (1,030 ) (892 ) Ps 3,616 4,489 (1,333 )

Cash and Cash Equivalents (Tabl

Cash and Cash Equivalents (Tables)	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Summary of Cash and Cash Equivalents	As of December 31, 2017 and 2016, consolidated cash and cash equivalents consisted of: 2017 2016 Cash and bank accounts Ps 9,292 9,104 Fixed-income securities and other cash equivalents 4,449 2,512 Ps 13,741 11,616

Trade Accounts Receivable, Net

Trade Accounts Receivable, Net (Tables)	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Summary of Trade Accounts Receivable	As of December 31, 2017 and 2016, consolidated trade accounts receivable consisted of: 2017 2016 Trade accounts receivable Ps 32,623 32,356 Allowances for doubtful accounts (2,145 ) (2,196 ) Ps 30,478 30,160
Summary of Changes in Valuation of Caption Allowance for Doubtful Accounts	Changes in the valuation of this caption allowance for doubtful accounts in 2017, 2016 and 2015, were as follows: 2017 2016 2015 Allowances for doubtful accounts at beginning of period Ps 2,196 2,152 1,856 Charged to selling expenses 252 556 434 Additions through business combinations 141 — — Deductions (449 ) (867 ) (276 ) Foreign currency translation effects 5 355 138 Allowances for doubtful accounts at end of period Ps 2,145 2,196 2,152

Other Accounts Receivable (Tabl

Other Accounts Receivable (Tables)	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Summary of Consolidated Other Accounts Receivable	As of December 31, 2017 and 2016, consolidated other accounts receivable consisted of: 2017 2016 Non-trade 1 Ps 1,918 2,527 Interest and notes receivable 2 1,125 1,286 Current portion of valuation of derivative financial instruments 1,056 236 Loans to employees and others 233 188 Refundable taxes 638 1,001 Ps 4,970 5,238 1 Non-trade 2 Includes Ps27 in 2016, representing the short-term portion of a restricted investment related to coupon payments under CEMEX’s perpetual debentures (note 20.4). In addition, in 2016, includes CEMEX Colombia’s beneficial interest in a trust oriented to promote housing projects, which its only asset is land in the municipality of Zipaquira, Colombia and its only liability is a bank credit for Ps148, guaranteed by CEMEX Colombia, obtained to purchase the land. The estimated fair value of the land as determined by external appraiser significantly exceeds the amount of the loan.

Inventories, Net (Tables)

Inventories, Net (Tables)	12 Months Ended
	Dec. 31, 2017
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Summary of Consolidated Balance of Inventories	As of December 31, 2017 and 2016, the consolidated balance of inventories was summarized as follows: 2017 2016 Finished goods Ps 5,933 5,865 Work-in-process 3,814 3,378 Raw materials 3,237 3,128 Materials and spare parts 4,996 4,551 Inventory in transit 872 1,176 Ps 18,852 18,098

Assets Held for Sale and Othe45

Assets Held for Sale and Other Current Asset (Tables)	12 Months Ended
	Dec. 31, 2017
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Summary of Assets and Liabilities Held for Sale	As of December 31, 2017 and 2016, assets held for sale, which are measured at the lower of their estimated realizable value, less costs to sell, and their carrying amounts, as well as liabilities directly related with such assets are detailed as follows: 2017 2016 Assets Liabilities Net assets Assets Liabilities Net assets Concrete Pipe Division (note 4.2) Ps — — — Ps 9,426 642 8,784 Fairborn cement plant (note 4.3) — — — 5,957 164 5,793 Investment in shares of GCC (note 13.1) 1 — — — 3,882 — 3,882 Idle assets in Andorra, Spain 580 — 580 560 — 560 Concrete pumping equipment (note 4.3) — — — 213 — 213 Other assets held for sale 798 — 798 991 9 982 Ps 1,378 — 1,378 Ps 21,029 815 20,214 1 During 2017, in separate transactions, CEMEX sold the direct investment in 23% of GCC’s common stock it maintained for sale (note 13.1).

Equity Accounted Investees, O46

Equity Accounted Investees, Other Investments and Non-Current Accounts Receivable (Tables)	12 Months Ended
	Dec. 31, 2017
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Summary of Main Investments in Common Shares of Associates	As of December 31, 2017 and 2016, the investments in common shares of associates were as follows: Activity Country % 2017 2016 Camcem, S.A. de C.V. Cement Mexico 40.1 Ps 3,618 3,674 Trinidad Cement Limited Cement Trinidad and 39.5 — 1,689 Concrete Supply Co. LLC Concrete United States 40.0 1,192 1,234 Akmenes Cementas AB Cement Lithuania 37.8 585 586 ABC Capital, S.A. Institución de Banca Múltiple Financing Mexico 33.9 228 474 Lehigh White Cement Company Cement United States 24.5 375 334 Société Méridionale de Carrières Aggregates France 33.3 367 300 Société d’Exploitation de Carrières Aggregates France 50.0 318 257 Cemento Interoceánico S.A. (formerly Industrias Básicas, S.A.) Cement Panama 25.0 168 155 Other companies — — — 1,721 1,785 Ps 8,572 10,488 Out of which: Book value at acquisition date Ps 6,957 8,275 Changes in stockholders’ equity Ps 1,615 2,213
Summary of Combined Condensed Statement of Financial Position	Combined condensed statement of financial position information of CEMEX’s associates as of December 31, 2017 and 2016 is set forth below: 2017 2016 Current assets Ps 21,527 21,651 Non-current 32,071 41,085 Total assets 53,598 62,736 Current liabilities 10,863 11,612 Non-current 17,730 22,436 Total liabilities 28,593 34,048 Total net assets Ps 25,005 28,688
Summary of Combined Selected Information of the Statements of Operations	Combined selected information of the statements of operations of CEMEX’s associates in 2017, 2016 and 2015 is set forth below: 2017 2016 2015 Sales Ps 28,158 29,791 25,484 Operating earnings 4,458 4,730 3,523 Income before income tax 2,451 3,111 3,350 Net income 1,891 1,860 2,403
Summary of Share of Profit of Equity Accounted Investees by Geographic Operating Segment	The share of equity accounted investees by geographic operating segment in the income statements for 2017, 2016 and 2015 is detailed as follows: 2017 2016 2015 Mexico Ps 269 452 330 United States 266 253 92 Europe 108 54 339 Corporate and others (55 ) (71 ) (24 ) Ps 588 688 737
Summary of Other Investments and Non-current Accounts Receivable	As of December 31, 2017 and 2016, consolidated other investments and non-current 2017 2016 Non-current Ps 794 1,900 Non-current 1 4,612 4,572 Investments available-for-sale 2 275 491 Investments held for trading 3 77 157 Ps 5,758 7,120 1 Includes, among other items: a) advances to suppliers of fixed assets of Ps43 in 2017 and Ps52 in 2016. CEMEX recognized impairment losses of non-current 2 This line item refers mainly to a strategic investment in CPOs of Axtel, S.A.B. de C.V. (“Axtel”). This investment is recognized as available for sale at fair value and changes in valuation are recorded in other items comprehensive income, net until its disposal. 3 This line item refers to investments in private funds. In 2017 and 2016, no contributions were made to such private funds.

Property, Machinery and Equip47

Property, Machinery and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Disclosure of Net Change in Property, Machinery and Equipment	As of December 31, 2017 and 2016, consolidated property, machinery and equipment, net and the changes in such line item during 2017, 2016 and 2015, were as follows: 2017 Land and 1 Building 1 Machinery 2 Construction 3 Total Cost at beginning of period Ps 97,218 51,740 229,717 17,247 395,922 Accumulated depreciation and depletion (16,301 ) (24,224 ) (125,263 ) — (165,788 ) Net book value at beginning of period 80,917 27,516 104,454 17,247 230,134 Capital expenditures 547 802 8,165 — 9,514 Additions through capital leases — — 2,096 — 2,096 Stripping costs 809 — — — 809 Total capital expenditures 1,356 802 10,261 — 12,419 Disposals 4 (347 ) (223 ) (1,274 ) — (1,844 ) Reclassifications 5 (784 ) (82 ) (768 ) — (1,634 ) Business combinations 2,179 749 3,136 428 6,492 Depreciation and depletion for the period (2,571 ) (1,967 ) (9,417 ) — (13,955 ) Impairment losses (202 ) (1 ) (763 ) (18 ) (984 ) Foreign currency translation effects (1,895 ) 908 719 1,800 1,532 Cost at end of period 95,495 53,927 242,636 19,457 411,515 Accumulated depreciation and depletion (16,842 ) (26,225 ) (136,288 ) — (179,355 ) Net book value at end of period Ps 78,653 27,702 106,348 19,457 232,160 2016 Land and 1 Building 1 Machinery 2 Construction 3 Total 2015 Cost at beginning of period Ps 86,441 48,563 211,232 13,853 360,089 324,210 Accumulated depreciation and depletion (12,215 ) (21,228 ) (109,952 ) — (143,395 ) (118,668 ) Net book value at beginning of period 74,226 27,335 101,280 13,853 216,694 205,542 Capital expenditures 2,149 1,856 8,671 — 12,676 11,454 Additions through capital leases — — 7 — 7 63 Capitalization of financial expense — — — 175 175 73 Stripping costs 421 — — — 421 723 Total capital expenditures 2,570 1,856 8,678 175 13,279 12,313 Disposals 4 (388 ) (141 ) (1,268 ) (44 ) (1,841 ) (2,247 ) Reclassifications 5 (2,029 ) (703 ) (1,731 ) (86 ) (4,549 ) (3,099 ) Business combinations — — — — — 4,004 Depreciation and depletion for the period (2,426 ) (2,033 ) (9,582 ) — (14,041 ) (13,086 ) Impairment losses (671 ) (303 ) (547 ) (378 ) (1,899 ) (1,145 ) Foreign currency translation effects 9,635 1,505 7,624 3,727 22,491 14,412 Cost at end of period 97,218 51,740 229,717 17,247 395,922 360,089 Accumulated depreciation and depletion (16,301 ) (24,224 ) (125,263 ) — (165,788 ) (143,395 ) Net book value at end of period Ps 80,917 27,516 104,454 17,247 230,134 216,694 1 Includes corporate buildings and related land sold to financial institutions in previous years, which were leased back. The aggregate carrying amount of these assets as of December 31, 2017 and 2016 was Ps1,690 and Ps1,777, respectively. 2 Includes assets, mainly mobile equipment, acquired through finance leases, which carrying amount as of December 31, 2017 and 2016 was Ps2,096 and Ps7, respectively. 3 In July 2014, CEMEX Colombia began the construction of a new cement plant in the municipality of Maceo in the Antioquia department in Colombia with an annual capacity of approximately 1.1 million tons. The first phase included the construction of a cement mill, which began operating in testing phase for some months in 2016 with the supply of clinker from the Caracolito plant in Ibague, and the cement obtained was used in its entirety in the construction of the plant. The next phase, which includes the construction of the kiln, has been completed. In connection with the access road to the plant, the works were suspended meanwhile CEMEX Colombia obtains the permits for its completion. The beginning of commercial operations is subject to the successful conclusion of several ongoing processes related to certain operating permits and other proceedings. As a result of the investigations carried out for the deficiencies found (note 24.1), during the fourth quarter of 2016, CEMEX Colombia reduced construction in progress for Ps483 (US$23), of which, Ps295 (US$14) were recognized as impairment losses against “Other expenses, net,” considering that the assets, mainly advances for the purchase of land through a representative, were considered contingent assets based on the low probability for their recoverability due to deficiencies in the legal processes, and Ps188 (US$9) were decreased against “Other accounts payable” in connection with the cancellation of the portion payable of such assets. CEMEX Colombia determined an initial total budget for the plant of US$340. As of December 31, 2017, the carrying amount of the project, net of adjustments, is for an amount in Colombian pesos equivalent to US$333 (Ps6,543), considering the exchange rates as of December 31, 2017. 4 In 2017, includes sales of non-strategic non-strategic non-strategic 5 In 2017, refers mainly to those assets of the Pacific Northwest Materials Business in the United States for Ps1,634 (note 4.2). In 2016, refers mainly to those assets of the Concrete Pipe Business in the United States for Ps2,747, as well as other disposal groups in the United States reclassified to assets available for sale for Ps1,386 (notes 4.2, 4.3 and 12.1). In 2015, refers to other disposal groups in the United States reclassified to assets available for sale for Ps537 (notes 4.3 and 12.1).
Summary of Recognized Impairment Losses	During the years ended December 31, 2017, 2016 and 2015 impairment losses of fixed assets by countries are as follows: 2017 2016 2015 Spain Ps 452 — 392 Czech Republic 157 — — United States 153 277 269 Panama 56 — 118 France 50 — — Latvia 46 — 126 Mexico 45 46 46 Puerto Rico — 1,087 172 Colombia — 454 — Other countries 25 35 22 Ps 984 1,899 1,145

Goodwill and Intangible Asset48

Goodwill and Intangible Assets, Net (Tables)	12 Months Ended
	Dec. 31, 2017
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Summary of Consolidated Goodwill, Intangible Assets and Deferred Charges	As of December 31, 2017 and 2016, consolidated goodwill, intangible assets and deferred charges were summarized as follows: 2017 2016 Cost Accumulated Carrying Cost Accumulated Carrying Intangible assets of indefinite useful life: Goodwill Ps 195,474 — 195,474 Ps 206,319 — 206,319 Intangible assets of definite useful life: Extraction rights 39,603 (6,480 ) 33,123 40,995 (5,948 ) 35,047 Industrial property and trademarks 929 (364 ) 565 707 (350 ) 357 Customer relationships 3,859 (3,852 ) 7 4,343 (4,084 ) 259 Mining projects 797 (96 ) 701 961 (84 ) 877 Others intangible assets 14,941 (9,902 ) 5,039 13,814 (9,166 ) 4,648 Ps 255,603 (20,694 ) 234,909 Ps 267,139 (19,632 ) 247,507
Summary of Changes in Consolidated goodwill	Changes in consolidated goodwill in 2017, 2016 and 2015, were as follows: 2017 2016 2015 Balance at beginning of period Ps 206,319 184,156 160,544 Business combinations 1,965 — 64 Disposals, net (note 4.3) — (3,340 ) (552 ) Reclassification to assets held for sale and other current assets (notes 4.2, 4.3 and 12) (1,804 ) (9,734 ) — Impairment losses (1,920 ) — — Foreign currency translation effects (9,086 ) 35,237 24,100 Balance at end of period Ps 195,474 206,319 184,156
Summary of Changes in Intangible Asset	Changes in intangible assets of definite life in 2017, 2016 and 2015, were as follows: 2017 Extraction Industrial Customer Mining Others 1 Total Balance at beginning of period Ps 35,047 357 259 877 4,648 41,188 Additions (disposals), net 1 278 (783 ) — (148 ) 424 (229 ) Business combinations (note 4.1) — — — 4 72 76 Reclassifications (notes 4.1, 4.2 and 12) — — (27 ) — — (27 ) Amortization for the period (716 ) (110 ) (225 ) (12 ) (974 ) (2,037 ) Impairment losses (38 ) — — — (12 ) (50 ) Foreign currency translation effects (1,448 ) 1,101 — (20 ) 881 514 Balance at the end of period Ps 33,123 565 7 701 5,039 39,435 2016 Extraction Industrial Customer Mining Others 1 Total 2015 Balance at beginning of period Ps 30,327 622 1,004 805 3,808 36,566 32,940 Business combinations — — — — — — 616 Additions (disposals), net 1 201 (760 ) — (382 ) 343 (598 ) (186 ) Reclassifications (notes 4.1, 4.2 and 12) — — — — — — 1 Amortization for the period (712 ) (293 ) (658 ) (12 ) (275 ) (1,950 ) (1,572 ) Impairment losses (6 ) — — — (19 ) (25 ) (10 ) Foreign currency translation effects 5,237 788 (87 ) 466 791 7,195 4,777 Balance at the end of period Ps 35,047 357 259 877 4,648 41,188 36,566 1 As of December 31, 2017 and 2016, “Others” includes the carrying amount of internal-use internal-use
Summary of Goodwill Balances Allocated by Operating Segment	As of December 31, 2017 and 2016, goodwill balances allocated by operating segment were as follows: 2017 2016 Mexico Ps 7,371 7,529 United States 152,486 162,692 Europe Spain 10,000 12,316 United Kingdom 6,335 6,371 France 4,796 4,524 Czech Republic 709 583 South, Central America and the Caribbean Colombia 6,146 6,461 Dominican Republic 279 250 TCL 2,027 — Rest of South, Central America and the Caribbean 1 985 1,036 Asia, Middle East and Africa Philippines 1,817 1,911 United Arab Emirates 1,769 1,865 Egypt 232 231 Others Other reporting segments 2 522 550 Ps 195,474 206,319 1 This caption refers to the operating segments in the Caribbean, Costa Rica and Panama. 2 This caption is primarily associated with Neoris N.V., CEMEX’s subsidiary involved in the sale of information technology and services.
Summary of Pre-tax Discount Rates and Long-term Growth Rates Used to Determine the Discounted Cash Flows	CEMEX’s pre-tax Discount rates Growth rates Groups of CGUs 2017 2016 2015 2017 2016 2015 United States 8.8% 8.6% 8.6% 2.5% 2.5% 2.5% Spain 9.5% 9.5% 9.9% 1.7% 1.6% 1.9% Mexico 10.2% 9.8% 9.6% 2.7% 2.9% 3.5% Colombia 10.5% 10.0% 9.8% 3.7% 4.0% 4.0% France 9.0% 9.1% 9.0% 1.8% 1.8% 1.6% United Arab Emirates 10.4% 10.2% 10.2% 3.1% 3.4% 3.6% United Kingdom 9.0% 8.8% 8.8% 1.7% 1.9% 2.3% Egypt 11.8% 11.4% 12.5% 6.0% 6.0% 4.6% Range of rates in other countries 9.1% - 11.7% 9.1% - 12.8% 9.0% - 13.8% 2.3% - 6.8% 2.2% - 7.0% 2.4% - 4.3%

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Summary of Debt Summarized by Interest Rates and Currencies	As of December 31, 2017 and 2016, CEMEX´s consolidated debt summarized by interest rates and currencies, was as follow: 2017 2016 Short-term Long-term Total Short-term Long-term Total Floating rate debt Ps 7,282 53,389 60,671 Ps 519 64,550 65,069 Fixed rate debt 9,691 123,633 133,324 703 170,466 171,169 Ps 16,973 177,022 193,995 Ps 1,222 235,016 236,238 Effective rate 1 Floating rate 6.1 % 3.0 % 9.7 % 4.4 % Fixed rate 4.8 % 5.7 % 4.4 % 6.5 % 2017 2016 Currency Short- Long- Total Effective 1 Short- Long- Total Effective 1 Dollars Ps 6,206 107,508 113,714 5.9 % Ps 114 179,675 179,789 6.3 % Euros 9,705 54,906 64,611 3.5 % 50 55,292 55,342 4.3 % Pounds — 9,141 9,141 2.6 % — — — — Philippine pesos — 5,408 5,408 4.6 % — — — — Pesos — — — — 648 — 648 4.4 % Other currencies 1,062 59 1,121 6.2 % 410 49 459 10.2 % Ps 16,973 177,022 193,995 Ps 1,222 235,016 236,238 1 In 2017 and 2016, represents the weighted average interest rate of the related debt agreements.
Summary of Consolidated Debt by Type of Instrument	As of December 31, 2017 and 2016, CEMEX´s consolidated debt summarized by type of instrument, was as follow: 2017 Short- Long- 2016 Short- Long- Bank loans Bank loans Loans in foreign countries, 2018 to 2022 Ps 910 5,439 Loans in foreign countries, 2017 to 2022 Ps 261 1,090 Syndicated loans, 2018 to 2020 — 50,132 Syndicated loans, 2017 to 2020 36 57,032 910 55,571 297 58,122 Notes payable Notes payable Notes payable in Mexico, 2018 — — Notes payable in Mexico, 2017 — 648 Medium-term notes, 2018 to 2026 224 133,949 Medium-term notes, 2017 to 2026 — 173,656 Other notes payable, 2018 to 2025 154 3,187 Other notes payable, 2017 to 2025 173 3,342 378 137,136 173 177,646 Total bank loans and notes payable 1,288 192,707 Total bank loans and notes payable 470 235,768 Current maturities 15,685 (15,685 ) Current maturities 752 (752 ) Ps 16,973 177,022 Ps 1,222 235,016
Summary of Changes in Consolidated Debt	Changes in consolidated debt for the years ended December 31, 2017, 2016 and 2015 were as follows: 2017 2016 2015 Debt at beginning of year Ps 236,238 229,343 205,834 Proceeds from new debt instruments 93,620 48,748 52,764 Debt repayments (128,411 ) (85,798 ) (64,237 ) Foreign currency translation and inflation effects (7,452 ) 43,945 34,982 Debt at end of year Ps 193,995 236,238 229,343
Summary of Long Term Notes Payable	As of December 31, 2017 and 2016, CEMEX’s long-term notes payable are detailed as follows: Description Date of Issuer 1, 2 Currency Principal Rate 1 Maturity Date Repurchased US$ Outstanding 3 US$ 2017 2016 April 2026 Notes 8 16/Mar/16 CEMEX, S.A.B. de C.V. Dollar 1,000 7.75% 16/Apr/26 — 1,000 Ps 19,568 20,631 July 2025 Notes 02/Apr/03 CEMEX Materials LLC Dollar 150 7.70% 21/Jul/25 — 150 3,061 3,249 March 2025 Notes 03/Mar/15 CEMEX, S.A.B. de C.V. Dollar 750 6.125% 05/May/25 — 750 14,691 15,488 January 2025 Notes 11/Sep/14 CEMEX, S.A.B. de C.V. Dollar 1,100 5.70% 11/Jan/25 (29 ) 1,071 20,988 22,124 December 2024 4 05/Dec/17 CEMEX, S.A.B. de C.V. Euro 650 2.75% 05/Dec/24 — 780 15,257 — June 2024 Notes 8 14/Jun/16 CEMEX Finance LLC Euro 400 4.625% 15/Jun/24 — 480 9,390 8,665 April 2024 Notes 01/Apr/14 CEMEX Finance LLC Dollar 1,000 6.00% 01/Apr/24 (10 ) 990 18,924 19,886 March 2023 Notes 03/Mar/15 CEMEX, S.A.B. de C.V. Euro 550 4.375% 05/Mar/23 — 660 12,938 11,948 October 2022 5 , 8 12/Oct/12 CEMEX Finance LLC Dollar 1,500 9.375% 12/Oct/22 (1,500 ) — — 21,738 January 2022 Notes 5 11/Sep/14 CEMEX, S.A.B. de C.V. Euro 400 4.75% 11/Jan/22 — 480 9,434 8,696 April 2021 Notes 6 01/Apr/14 CEMEX Finance LLC Euro 400 5.25% 01/Apr/21 (447 ) — — 8,679 January 2021 7 , 8 02/Oct/13 CEMEX, S.A.B. de C.V. Dollar 1,000 7.25% 15/Jan/21 (659 ) 341 6,606 14,845 December 2019 5 , 7 , 8 12/Aug/13 CEMEX, S.A.B. de C.V. Dollar 1,000 6.50% 10/Dec/19 (1,000 ) — — 14,471 October 2018 Variable Notes 8 02/Oct/13 CEMEX, S.A.B. de C.V. Dollar 500 L+475bps 15/Oct/18 (187 ) 313 6,154 6,485 November 2017 Notes 30/Nov/07 CEMEX, S.A.B. de C.V. Peso 627 4.40% 17/Nov/17 (37 ) — — 648 Other notes payable 125 93 Ps 137,136 177,646 1 In all applicable cases the issuer refers to CEMEX España, S.A. acting through its Luxembourg Branch. The letter “L” included above refers to LIBOR, which represents the London Inter-Bank Offered Rate, variable rate used in international markets for debt denominated in U.S. dollars. As of December 31, 2017 and 2016, 3-Month 2 Unless otherwise indicated, all issuances are fully and unconditionally guaranteed by CEMEX, S.A.B. de C.V., CEMEX México, S.A. de C.V., CEMEX Concretos, S.A. de C.V., Empresas Tolteca de México, S.A. de C.V., New Sunward Holding B.V., CEMEX España, S.A., CEMEX Asia, B.V., CEMEX Corp., CEMEX Egyptian Investments, B.V., CEMEX Finance LLC, CEMEX France Gestion, (S.A.S.), CEMEX Research Group AG and CEMEX UK. CEMEX Egyptian Investments II, B.V. and CEMEX Shipping B.V. originally guaranteed the issuances listed above but were merged into CEMEX España, S.A. on October 3, 2016. 3 Presented net of all outstanding notes repurchased and held by CEMEX’s subsidiaries. 4 On December 5, 2017, CEMEX issued €650 of 2.75% senior secured notes due December 5, 2024 (the “December 2024 Notes”). The proceeds will be used to repay other indebtedness. 5 In connection with tender offers or the execution of call notice, as applicable, on December 10, 2017, CEMEX repurchased the outstanding amount of the December 2019 Notes for an aggregate principal amount of US$611; and on September 25, 2017, CEMEX repurchased US$701 aggregate principal amount of the October 2022 Notes. The notes of the holders that did not tender in the offer for US$343 were redeemed on October 12, 2017. In addition, on November 28, 2017, CEMEX announced its intention to redeem the total outstanding amount of the January 2022 Notes for an aggregate principal amount of €400 (US$480 or Ps9,432) that would be payable on January 10, 2018 and are presented as current maturities of long-term debt in the statement of financial position as of December 31, 2017 (note 26). 6 On May 31, 2017, by means of a tender offer for the April 2021 Notes, CEMEX redeemed the remaining €400 of aggregate principal amount of such notes. 7 On February 28, 2017, by means of a tender offer, CEMEX repurchased US$385 aggregate principal amount of the January 2021 Notes and US$90 of the December 2019 Notes. 8 During 2016, by means of tender offers, using available funds from the issuance of the April 2026 Notes, the June 2024 Notes, the sale of assets and cash flows provided by operating activities, CEMEX completed the purchase of US$739 principal amount of the October 2022 Notes, the purchase of US$178 principal amount of the October 2018 Variable Notes, the purchase of US$219 principal amount of the December 2019 Notes, and the purchase of US$242 principal amount of the January 2021 Notes.
Schedule of Consolidated Long-Term Debt	The maturities of consolidated long-term debt as of December 31, 2017, were as follows: 2017 2019 Ps 30 2020 10,175 2021 26,948 2022 19,594 2023 and thereafter. 120,275 Ps 177,022
Schedule of Lines of Credit	As of December 31, 2017, CEMEX had the following lines of credit, the majority of which are uncommitted, at annual interest rates ranging between 1.25% and 6.50%, depending on the negotiated currency: Lines of credit Available Other lines of credit in foreign subsidiaries Ps 9,506 7,237 Other lines of credit from banks 9,309 8,169 Ps 18,815 15,406
Summary of Margin over LIBOR Depending on Leverage Ration	All tranches under the 2017 Credit Agreement have substantially the same terms, including an applicable margin over LIBOR or EURIBOR, as applicable, of between 125 to 350 basis points, depending on the leverage ratio (as defined below) of CEMEX, as follows: Consolidated leverage ratio Applicable margin > = 5.50x 350 bps < 5.00x > 4.50x 300 bps < 4.50x > 4.00x 250 bps < 4.00x > 3.50x 212.5 bps < 3.50x > 3.00x 175 bps < 3.00x > 2.50x 150 bps < 2.50x 125 bps
Summary of Coverage Ratio and Leverage Ratio	As of December 31, 2017, CEMEX must comply with a Coverage ratio and a Leverage ratio for each period of four consecutive fiscal quarters as follows: Period Coverage ratio Period Leverage ratio For the period ending on December 31, 2017 up to and including the period ending on March 31, 2020 > = 2.50 For the period ending on December 31, 2017 up to and including the period ending on March 31, 2018 < = 5.25 For the period ending on June 30, 2018 up to and including the period ending on September 30, 2018 < = 5.00 For the period ending on June 30, 2020 and each subsequent reference period > = 2.75 For the period ending on December 31, 2018 up to and including the period ending on March 31, 2019 < = 4.75 For the period ending on June 30, 2019 up to and including the period ending on March 31, 2020 < = 4.50 For the period ending on June 30, 2020 and each subsequent reference period < = 4.25
Summary of Consolidated Financial Ratios	The main consolidated financial ratios as of December 31, 2017, 2016 and 2015 were as follows: Consolidated financial ratios 2017 2016 2015 Leverage ratio 1, 2 Limit < = 5.25 < = 6.00 < = 6.00 Calculation 3.85 4.22 5.21 Coverage ratio 3 Limit > = 2.50 > = 1.85 > = 1.85 Calculation 3.46 3.18 2.61 1 The leverage ratio is calculated in pesos by dividing “Funded debt” by pro forma Operating EBITDA for the last twelve months as of the calculation date. Funded debt equals debt, as reported in the statement of financial position, excluding finance leases, components of liability of convertible subordinated notes, plus perpetual debentures and guarantees, plus or minus the fair value of derivative financial instruments, as applicable, among other adjustments. 2 Pro forma Operating EBITDA represents, all calculated in pesos, Operating EBITDA for the last twelve months as of the calculation date, plus the portion of Operating EBITDA referring to such twelve-month period of any significant acquisition made in the period before its consolidation in CEMEX, minus Operating EBITDA referring to such twelve-month period of any significant disposal that had already been liquidated. 3 The coverage ratio is calculated in pesos using the amounts from the financial statements, by dividing the pro forma Operating EBITDA by the financial expense for the last twelve months as of the calculation date. Financial expense includes interest accrued on the perpetual debentures.
Summary of Other Financial Obligations	As of December 31, 2017 and 2016, other financial obligations in the consolidated statement of financial position are detailed as follows: 2017 2016 Short-term Long-term Total Short-term Long-term Total I. Convertible subordinated notes due 2020 Ps — 9,985 9,985 Ps — 10,417 10,417 II. Convertible subordinated notes due 2018 7,115 — 7,115 — 13,575 13,575 III. Mandatorily convertible securities 2019 323 371 694 278 689 967 IV. Liabilities secured with accounts receivable 11,313 — 11,313 11,095 — 11,095 V. Finance leases 611 2,503 3,114 285 1,291 1,576 Ps 19,362 12,859 32,221 Ps 11,658 25,972 37,630
Summary of Carrying Amounts and Fair Value of Financial Instruments	As of December 31, 2017 and 2016, the carrying amounts of financial assets and liabilities and their respective fair values were as follows: 2017 2016 Carrying Fair value Carrying Fair value Financial assets Derivative instruments (notes 13.2 and 16.4) Ps 794 794 Ps 1,900 1,900 Other investments and non-current 4,964 4,964 5,220 5,220 Ps 5,758 5,758 Ps 7,120 7,120 Financial liabilities Long-term debt (note 16.1) Ps 177,022 184,220 Ps 235,016 241,968 Other financial obligations (note 16.2) 12,859 13,381 25,972 27,419 Derivative instruments (notes 16.4 and 17) 402 402 818 818 Ps 190,283 198,003 Ps 261,806 270,205
Summary of Fair Value of Derivative Financial Instruments at Fair Value Hierarchy	As of December 31, 2017 and 2016, assets and liabilities carried at fair value in the consolidated statements of financial position are included in the following fair value hierarchy categories: 2017 Level 1 Level 2 Level 3 Total Assets measured at fair value Derivative instruments (notes 13.2 and 16.4) Ps — 794 — 794 Investments available-for-sale 275 — — 275 Investments held for trading (note 13.2) — 77 — 77 Ps 275 871 — 1,146 Liabilities measured at fair value Derivative instruments (notes 16.4 and 17) Ps — 402 — 402 2016 Level 1 Level 2 Level 3 Total Assets measured at fair value Derivative instruments (notes 13.2 and 16.4) Ps — 1,900 — 1,900 Investments available-for-sale 491 — — 491 Investments held for trading (note 13.2) — 157 — 157 Ps 491 2,057 — 2,548 Liabilities measured at fair value Derivative instruments (notes 16.4 and 17) Ps — 818 — 818
Summary of Derivative Financial Instruments	As of December 31, 2017 and 2016, the notional amounts and fair values of CEMEX’s derivative instruments were as follows: 2017 2016 (U.S. dollars millions) Notional Fair value Notional Fair value I. Net investment hedge US$ 1,160 47 — — II. Foreign exchange forwards related to forecasted transactions 381 3 80 — III. Equity forwards on third party shares 168 7 — — IV. Interest rate swaps 137 16 147 23 V. Fuels price hedging 72 20 77 15 VI. 2019 Mandatorily Convertible Securities and options on the Parent Company’s own shares — (20 ) 576 26 US$ 1,918 73 880 64
Summary of Consolidated Net Monetary Assets (Liabilities) by Currency	As of December 31, 2017 and 2016, CEMEX’s consolidated net monetary assets (liabilities) by currency are as follows: 2017 Mexico United Europe South, Central Asia, Middle Others 1 Total Monetary assets Ps 11,798 9,453 14,182 7,347 9,780 5,163 57,723 Monetary liabilities 17,505 32,158 45,675 12,016 11,522 221,579 340,455 Net monetary assets (liabilities) 2 Ps (5,707) (22,705 ) (31,493 ) (4,669 ) (1,742 ) (216,416 ) (282,732 ) Out of which: Dollars Ps(1,097) (22,710 ) 39 (126 ) 221 (133,530 ) (157,203 ) Pesos (4,610 ) 4 24 — — (7,745 ) (12,327 ) Euros — — (10,155 ) 2 — (58,452 ) (68,605 ) Pounds — — (19,358 ) — — (9,119 ) (28,477 ) Other currencies — 1 (2,043 ) (4,545 ) (1,963 ) (7,570 ) (16,120 ) Ps(5,707) (22,705) (31,493 ) (4,669 ) (1,742 ) (216,416 ) (282,732 ) 2016 Mexico United Europe South, Central Asia, Middle Others 1 Total Monetary assets Ps 10,261 26,685 12,724 6,132 13,101 11,836 80,739 Monetary liabilities 10,564 33,145 42,336 9,130 11,305 277,117 383,597 Net monetary assets (liabilities) 2 Ps (303) (6,460) (29,612) (2,998) 1,796 (265,281) (302,858) Out of which: Dollars Ps (483) (6,463) 38 35 364 (214,751) (221,260) Pesos 180 3 — — — (3,395) (3,212) Euros — — (9,465) — — (48,470) (57,935) Pounds — — (14,408) — — — (14,408) Other currencies — — (5,777) (3,033) 1,432 1,335 (6,043) Ps (303) (6,460) (29,612) (2,998) 1,796 (265,281) (302,858) 1 Includes the Parent Company, CEMEX’s financing subsidiaries, as well as Neoris N.V., among other entities. 2 Includes assets held for sale and liabilities directly related with these assets considering that such items will be realized in the short-term.

Other Current and Non-current50

Other Current and Non-current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Summary of Other Current Liabilities	As of December 31, 2017 and 2016, consolidated other current liabilities were as follows: 2017 2016 Provisions 1 Ps 12,667 11,716 Interest payable 2,496 3,425 Advances from customers 3,886 3,413 Other accounts payable and accrued expenses 2 5,238 3,976 Ps 24,287 22,530 1 Current provisions primarily consist of accrued employee benefits, insurance payments, accruals for legal assessments and others. These amounts are revolving in nature and are expected to be settled and replaced by similar amounts within the next 12 months. 2 In 2017, includes an account payable in Colombian pesos equivalent to Ps491 (US$25) to be settled on January 5, 2018 related to a penalty imposed by the Commerce and Industry Superintendence in Colombia in connection with a market investigation (note 24.2).
Summary of Other Non-current Liabilities	As of December 31, 2017 and 2016, consolidated other non-current 2017 2016 Asset retirement obligations 1 Ps 7,906 8,237 Accruals for legal assessments and other responsibilities 2 1,599 1,514 Non-current 402 818 Environmental liabilities 3 991 1,172 Other non-current 4 4,751 5,305 Ps 15,649 17,046 1 Provisions for asset retirement include future estimated costs for demolition, cleaning and reforestation of production sites at the end of their operation, which are initially recognized against the related assets and are depreciated over their estimated useful life. 2 Provisions for legal claims and other responsibilities include items related to tax contingencies. 3 Environmental liabilities include future estimated costs arising from legal or constructive obligations, related to cleaning, reforestation and other remedial actions to remediate damage caused to the environment. The expected average period to settle these obligations is greater than 15 years. 4 As of December 31, 2017 and 2016, includes Ps1,498 and Ps2,300, respectively, of the non-current
Summary of Changes in Consolidated Other Current and Non-Current Liabilities	Changes in consolidated other current and non-current 2017 Asset Environmental Accruals for Valuation of Other Total 2016 Balance at beginning of period Ps 8,237 1,172 1,514 823 17,016 28,762 25,611 Business combinations — — — — 345 345 — Additions or increase in estimates 573 21 701 214 39,545 41,054 67,684 Releases or decrease in estimates (527 ) (54 ) (289 ) (306 ) (40,524 ) (41,700 ) (61,362 ) Reclassifications — (182 ) 530 — (1,462 ) (1,114 ) (741 ) Accretion expense (191 ) — — — (830 ) (1,021 ) (1,042 ) Foreign currency translation (186 ) 34 (857 ) (310 ) 3,309 1,990 (1,388 ) Balance at end of period Ps 7,906 991 1,599 421 17,399 28,316 28,762 Out of which: Current provisions Ps — — — 19 12,648 12,667 11,716

Pensions and Post-Employment 51

Pensions and Post-Employment Benefits (Tables)	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Schedule Actuarial Results Related to Pension and Other Post Retirement Benefits	For the years ended December 31, 2017, 2016 and 2015, the effects of pension plans and other post-employment benefits are summarized as follows: Pensions Other benefits Total Net period cost (income): 2017 2016 2015 2017 2016 2015 2017 2016 2015 Recorded in operating costs and expenses Service cost Ps 221 151 128 33 25 30 254 176 158 Past service cost (55 ) 8 12 — — (20 ) (55 ) 8 (8 ) Loss for settlements and curtailments — — — — — (13 ) — — (13 ) 166 159 140 33 25 (3 ) 199 184 137 Recorded in other financial expenses Net interest cost 693 711 596 74 57 56 767 768 652 Recorded in other comprehensive income Actuarial (gains) losses for the period 20 3,985 872 (23 ) 34 (124 ) (3 ) 4,019 748 Ps 879 4,855 1,608 84 116 (71 ) 963 4,971 1,537
Disclosure of Net Defined Benefit Liability (Asset)	The reconciliations of the actuarial benefits obligations, pension plan assets, and liabilities recognized in the statement of financial position as of December 31, 2017 and 2016 are presented as follows: Pensions Other benefits Total 2017 2016 2017 2016 2017 2016 Change in benefits obligation: Projected benefit obligation at beginning of the period Ps 51,055 42,740 1,164 1,100 52,219 43,840 Service cost 221 151 33 25 254 176 Interest cost 1,625 1,685 76 59 1,701 1,744 Actuarial (gains) losses 727 6,263 (24 ) 35 703 6,298 Additions through business combinations 2,801 — 271 — 3,072 — Settlements and curtailments — — — (19 ) — (19 ) Plan amendments 15 8 — — 15 8 Benefits paid (2,920 ) (2,379 ) (81 ) (74 ) (3,001 ) (2,453 ) Foreign currency translation 1,386 2,587 (3 ) 38 1,383 2,625 Projected benefit obligation at end of the period 54,910 51,055 1,436 1,164 56,346 52,219 Change in plan assets: Fair value of plan assets at beginning of the period 28,828 25,547 26 24 28,854 25,571 Return on plan assets 932 974 2 2 934 976 Actuarial (gains) losses for the period 707 2,278 (1 ) 1 706 2,279 Employer contributions 1,494 1,289 81 93 1,575 1,382 Additions through business combinations 2,841 — — — 2,841 — Reduction for disposal of assets (4 ) — — — (4 ) — Settlements and curtailments — — — (19 ) — (19 ) Benefits paid (2,920 ) (2,379 ) (81 ) (74 ) (3,001 ) (2,453 ) Foreign currency translation 787 1,119 1 (1 ) 788 1,118 Fair value of plan assets at end of the period 32,665 28,828 28 26 32,693 28,854 Amounts recognized in the statements of financial position: Net projected liability recognized in the statement of financial position Ps 22,245 22,227 1,408 1,138 23,653 23,365
Summary of Actuarial (Gains) Losses	For the years 2017, 2016 and 2015, actuarial (gains) losses for the period were generated by the following main factors as follows: 2017 2016 2015 Actuarial (gains) losses due to experience Ps 121 (511 ) (105 ) Actuarial (gains) losses due to demographic assumptions (46 ) (231 ) (153 ) Actuarial (gains) losses due financial assumptions (78 ) 4,761 1,006 Ps (3 ) 4,019 748
Summary of Plan Assets Measured at Estimated Fair Value	As of December 31, 2017 and 2016, plan assets were measured at their estimated fair value and, based on the hierarchy of fair values, are detailed as follows: 2017 2016 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Cash Ps 579 — 111 690 Ps 1,075 1,024 — 2,099 Investments in corporate bonds 144 6,067 1 6,212 1,050 2,617 — 3,667 Investments in government bonds 1,701 9,407 — 11,108 209 10,081 — 10,290 Total fixed-income securities 2,424 15,474 112 18,010 2,334 13,722 — 16,056 Investment in marketable securities 6,212 1,735 — 7,947 2,001 5,956 — 7,957 Other investments and private funds 991 3,279 2,466 6,736 770 3,478 593 4,841 Total variable-income securities 7,203 5,014 2,466 14,683 2,771 9,434 593 12,798 Total plan assets Ps 9,627 20,488 2,578 32,693 Ps 5,105 23,156 593 28,854
Schedule of Estimated Payments for Pensions and Other Post-Employment Benefits	As of December 31, 2017, estimated payments for pensions and other post-employment benefits over the next 10 years were as follows: 2017 2018 Ps 3,071 2019 2,952 2020 3,085 2021 3,080 2022 3,121 2023 – 2027 15,868
Summary of Significant Assumptions Used in the Determination of the Benefit Obligation	The most significant assumptions used in the determination of the benefit obligation were as follows: 2017 2016 Mexico United United Range of rates in Mexico United United Rates ranges in Discount rates 9.3 % 3.9 % 2.4 % 1.3% – 6.3% 9.0 % 4.2 % 2.6 % 1.1% – 7.0% Rate of return on plan assets 9.3 % 3.9 % 2.4 % 1.3% – 6.3% 9.0 % 4.2 % 2.6 % 1.1% – 7.0% Rate of salary increases 4.0 % — 3.2 % 1.5% – 6.0% 4.0 % — 3.3 % 1.5% – 6.0% The increase (decrease) that would have resulted in the PBO of pensions and other post-employment benefits as of December 31, 2017 are shown below: Pensions Other benefits Total +50 bps -50 bps +50 bps -50 bps +50 bps -50 bps Assumptions: Discount Rate Sensitivity Ps (4,028 ) 4,426 (72 ) 83 (4,100 ) 4,509 Salary Increase Rate Sensitivity 154 (138 ) 34 (29 ) 189 (166 ) Pension Increase Rate Sensitivity 2,341 (2,209 ) — — 2,341 (2,209 )
Aggregate Projected Benefit Obligation for Pension Plans and Other Post-Employment Benefits and the Plan Assets by Country	As of December 31, 2017 and 2016, the aggregate projected benefit obligation (“PBO”) for pension plans and other post-employment benefits and the plan assets by country were as follows: 2017 2016 PBO Assets Deficit PBO Assets Deficit Mexico Ps 3,213 840 2,373 Ps 3,247 824 2,423 United States 6,378 4,031 2,347 7,110 4,192 2,918 United Kingdom 35,602 23,145 12,457 33,925 22,154 11,771 Germany 4,362 213 4,149 4,429 227 4,202 Other countries 6,791 4,464 2,327 3,508 1,457 2,051 Ps 56,346 32,693 23,653 Ps 52,219 28,854 23,365

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Summery of Income Tax Revenue Expense	The amounts of income tax revenue (expense) in the statements of operations for 2017, 2016 and 2015 are summarized as follows: 2017 2016 2015 Current income taxes Ps (3,458 ) (3,456 ) 6,121 Deferred income taxes 2,938 331 (8,489 ) Ps (520 ) (3,125 ) (2,368 )
Summary of Temporary Differences in Deferred Income Tax Assets and Liabilities	As of December 31, 2017 and 2016, the main temporary differences that generated the consolidated deferred income tax assets and liabilities are presented below: 2017 2016 Deferred tax assets: Tax loss carryforwards and other tax credits Ps 15,900 17,514 Accounts payable and accrued expenses 7,083 9,262 Intangible assets and deferred charges, net 4,175 6,358 Others — 411 Total deferred tax assets, net 27,158 33,545 Deferred tax liabilities: Property, machinery and equipment (27,268 ) (35,095 ) Investments and other assets (874 ) (2,012 ) Total deferred tax liabilities, net (28,142 ) (37,107 ) Net deferred tax liabilities Ps (984 ) (3,562 ) Out of which: Net deferred tax (liability) asset in Mexican entities Ps (3,644 ) (2,509 ) Net deferred tax (liability) asset in Foreign entities Ps 2,660 (1,053 )
Summery of Breakdown of Changes in Consolidated Deferred Income Taxes	The breakdown of changes in consolidated deferred income taxes during 2017, 2016 and 2015 were as follows: 2017 2016 2015 Deferred income tax (charged) credited to the income statement 1 Ps 2,938 331 (8,489 ) Deferred income tax (charged) credited to stockholders’ equity 200 514 1,089 Reclassification to other captions in the statement of financial position and in the income statement 2 (560 ) 531 (5,467 ) Change in deferred income tax during the period Ps 2,578 1,376 (12,867 ) 1 In 2017, includes a net income tax revenue related to the recognition of deferred income tax assets in CEMEX’s operations in the United States (note 19.4). 2 In 2017, 2016 and 2015, includes the effects of discontinued operations (note 4.2) and in 2015 the effects of the termination of tax consolidation regime in Mexico.
Summery of Current and Deferred Income Tax Relative to Items of Other Comprehensive Income Loss	Current and/or deferred income tax relative to items of other comprehensive income during 2017, 2016 and 2015 were as follows: 2017 2016 2015 Tax effects relative to foreign exchange fluctuations from debt (note 20.2) Ps — (410 ) (272 ) Tax effects relative to foreign exchange fluctuations from intercompany balances (note 20.2) 32 (12 ) (181 ) Tax effects relative to actuarial (gains) and losses (note 20.2) (1 ) 788 183 Foreign currency translation and other effects 201 (274 ) 906 Ps 232 92 636
Schedule of Consolidated Tax Loss and Tax Credits Carry Forwards Expire	As of December 31, 2017, consolidated tax loss and tax credits carryforwards expire as follows: Amount of Amount of Amount of 2018 Ps 1,099 415 684 2019 5,989 5,149 840 2020 8,929 8,115 814 2021 4,407 2,908 1,499 2022 and thereafter 288,466 230,425 58,041 Ps 308,890 247,012 61,878
Schedule of Effective Tax Rate Table	For the years ended December 31, 2017, 2016 and 2015, the effective consolidated income tax rates were as follows: 2017 2016 2015 Income before income tax Ps 13,659 17,563 3,464 Income tax expense (520 ) (3,125 ) (2,368 ) Effective consolidated income tax rate 1 (3.8 )% (17.8 )% (68.4 )% 1 The average effective tax rate equals the net amount of income tax revenue or expense divided by income or loss before income taxes, as these line items are reported in the income statement.
Schedule of Reconciliation Between Actual Income Tax Expense and Amount Computed by Applying Statutory Tax Rate	Differences between the financial reporting and the corresponding tax basis of assets and liabilities and the different income tax rates and laws applicable to CEMEX, among other factors, give rise to permanent differences between the statutory tax rate applicable in Mexico, and the effective tax rate presented in the consolidated statements of operations, which in 2017, 2016 and 2015 were as follows: 2017 2016 2015 % Ps % Ps % Ps Mexican statutory tax rate (30.0 ) (4,098 ) (30.0 ) (5,269 ) (30.0 ) (1,039 ) Non-taxable 0.1 14 0.2 32 37.0 1,280 Difference between accounting and tax expenses, net (20.9 ) (2,855 ) 82.6 14,507 (84.3 ) (2,919 ) Termination of the income tax consolidation regime in Mexico — — — — 32.8 1,136 Unrecognized effects during the year related to applicable tax consolidation regimes 0.9 123 (3.6 ) (632 ) 8.5 293 Non-taxable 15.0 2,049 3.7 650 36.5 1,263 Difference between book and tax inflation (31.2 ) (4,261 ) (11.0 ) (1,932 ) (26.6 ) (922 ) Differences in the income tax rates in the countries where CEMEX operates 1 21.9 2,991 11.0 1,932 48.9 1,693 Changes in deferred tax assets 2 39.8 5,433 (70.1 ) (12,320 ) (100.3 ) (3,473 ) Changes in provisions for uncertain tax positions (0.4 ) (55 ) 0.7 123 7.9 272 Others 1.0 139 (1.3 ) (216 ) 1.2 48 Effective consolidated tax rate (3.8 ) (520 ) (17.8 ) (3,125 ) (68.4 ) (2,368 ) 1 Refers mainly to the effects of the differences between the statutory income tax rate in Mexico of 30% against the applicable income tax rates of each country where CEMEX operates. In 2017, includes the effect related to the change in statutory tax rate in the United States (note 19.4). 2 Refers to the effects in the effective income tax rate associated with changes during the period in the amount of deferred income tax assets related to CEMEX’s tax loss carryforwards.
Schedule of Variations Between the Line Item Changes in Deferred Tax Assets Against the Changes in Deferred Tax Assets in the Balance Sheet	The following table compares variations between the line item “Changes in deferred tax assets” as presented in the table above against the changes in deferred tax assets in the statement of financial position for the years ended December 31, 2017 and 2016: 2017 2016 Changes in the Amounts in Changes in the Amounts in Tax loss carryforwards generated and not recognized during the year Ps — 6,092 — (9,108 ) Derecognition related to tax loss carryforwards recognized in prior years (5,221 ) (5,221 ) (4,843 ) (4,843 ) Recognition related to unrecognized tax loss carryforwards 9,694 9,694 1,631 1,631 Foreign currency translation and other effects (6,087 ) (5,132 ) 4,068 — Changes in deferred tax assets Ps (1,614 ) 5,433 856 (12,320 )
Schedule of Unrecognized Tax Benefits	A summary of the beginning and ending amount of unrecognized tax benefits for the years ended December 31, 2017, 2016 and 2015, excluding interest and penalties, is as follows: 2017 2016 2015 Balance of tax positions at beginning of the period Ps 1,132 1,190 1,396 Additions for tax positions of prior periods 663 200 134 Additions for tax positions of current period 16 90 71 Reductions for tax positions related to prior periods and other items (32 ) (131 ) (95 ) Settlements and reclassifications (119 ) (163 ) (204 ) Expiration of the statute of limitations (138 ) (126 ) (231 ) Foreign currency translation effects 49 72 119 Balance of tax positions at end of the period Ps 1,571 1,132 1,190

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Summary of Breakdown of Common Stock and Additional Paid-in Capital	As of December 31, 2017 and 2016, the breakdown of common stock and additional paid-in 2017 2016 Common stock Ps 4,171 4,162 Additional paid-in 140,483 123,174 Ps 144,654 127,336
Summary of Common Stock	As of December 31, 2017 and 2016 the common stock of CEMEX, S.A.B. de C.V. was presented as follows: 2017 2016 Shares 1 Series A 2 Series B 2 Series A 2 Series B 2 Subscribed and paid shares 30,214,469,912 15,107,234,956 28,121,583,148 14,060,791,574 Unissued shares authorized for executives’ stock compensation programs 531,739,616 265,869,808 638,468,154 319,234,077 Shares that guarantee the issuance of convertible securities 3 4,529,605,020 2,264,802,510 5,218,899,920 2,609,449,960 35,275,814,548 17,637,907,274 33,978,951,222 16,989,475,611 1 As of December 31, 2017 and 2016, 13,068,000,000 shares correspond to the fixed portion, and 39,845,721,822 shares in 2017 and 37,900,426,833 shares in 2016, correspond to the variable portion. 2 Series “A” or Mexican shares must represent at least 64% of CEMEX’s capital stock; meanwhile, Series “B” or free subscription shares must represent at most 36% of CEMEX’s capital stock. 3 Shares that guarantee the conversion of both the outstanding voluntary and mandatorily convertible securities and new securities issues (note 16.2).
Summary of Other Equity Reserves	As of December 31, 2017 and 2016 other equity reserves are summarized as follows: 2017 2016 Cumulative translation effect, net of effects from perpetual debentures and deferred income taxes recognized directly in equity (notes 19.2 and 20.4) Ps 21,288 31,293 Cumulative actuarial losses (10,931 ) (10,934 ) Effects associated with CEMEX´s convertible securities 1 3,427 4,761 Treasury shares held by subsidiaries (301 ) (327 ) Ps 13,483 24,793 1 Represents the equity component upon the issuance of CEMEX’s convertible securities described in note 16.2, as well as the effects associated with such securities in connection with the change in the Parent Company’s functional currency (note 2.4). Upon conversion of these securities, the balances have been correspondingly reclassified to common stock and/or additional paid-in
Summary of Translation Effects of Foreign Subsidiaries Included in Statements of Comprehensive Income (Loss)	For the years ended December 31, 2017, 2016 and 2015, the translation effects of foreign subsidiaries included in the statements of comprehensive income were as follows: 2017 2016 2015 Foreign currency translation result 1 Ps (3,116 ) 20,648 12,869 Foreign exchange fluctuations from debt 2 (4,160 ) 1,367 908 Foreign exchange fluctuations from intercompany balances 3 (2,243 ) (10,385 ) (5,801 ) Ps (9,519 ) 11,630 7,976 1 These effects refer to the result from the translation of the financial statements of foreign subsidiaries and include the changes in fair value of foreign exchange forward contracts designated as hedge of a net investment (note 16.4). 2 Generated by foreign exchange fluctuations over a notional amount of debt in CEMEX, S.A.B. de C.V., associated with the acquisition of foreign subsidiaries and designated as a hedge of the net investment in foreign subsidiaries (note 2.4). 3 Refers to foreign exchange fluctuations arising from balances with related parties in foreign currencies that are of a long-term investment nature considering that their liquidation is not anticipated in the foreseeable future and foreign exchange fluctuations over a notional amount of debt of a subsidiary of CEMEX España identified and designated as a hedge of the net investment in foreign subsidiaries.
Detail of Cemex's Perpetual Debentures, Excluding Perpetual Debentures Held by Subsidiaries	As of December 31, 2017 and 2016, the detail of CEMEX’s perpetual debentures, excluding the perpetual debentures held by subsidiaries, was as follows: 2017 2016 Repurchase option Interest rate Issuer Issuance date Nominal amount Nominal amount C10-EUR May 2007 € 64 € 64 Tenth anniversary EURIBOR + 4.79% C8 Capital (SPV) Ltd February 2007 US$ 135 US$ 135 Eighth anniversary LIBOR + 4.40% C5 Capital (SPV) Ltd 1 December 2006 US$ 61 US$ 61 Fifth anniversary LIBOR + 4.277% C10 Capital (SPV) Ltd December 2006 US$ 175 US$ 175 Tenth anniversary LIBOR + 4.71% 1 Under the 2017 Credit Agreement, and previously under the 2014 Credit Agreement, CEMEX is not permitted to call these debentures.

Earnings per Share (Tables)

Earnings per Share (Tables)	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Summary of Calculations of Earnings per Share	The amounts considered for calculations of earnings per share in 2017, 2016 and 2015 were as follows: 2017 2016 2015 Denominator (thousands of shares) Weighted average number of shares outstanding 1 43,107,457 42,211,409 41,491,672 Capitalization of retained earnings 2 1,687,295 1,687,295 1,687,295 Effect of dilutive instruments — mandatorily convertible securities (note 16.2) 3 708,153 708,153 708,153 Weighted average number of shares — basic 45,502,905 44,606,857 43,887,120 Effect of dilutive instruments — share-based compensation (note 21) 3 237,102 226,972 171,747 Effect of potentially dilutive instruments — optionally convertible securities (note 16.2) 3 2,698,600 3,834,458 5,065,605 Weighted average number of shares — diluted 48,438,607 48,668,287 49,124,472 Numerator Net income from continuing operations Ps 13,139 14,438 1,096 Less: non-controlling 1,417 1,173 923 Controlling interest net income from continuing operations 11,722 13,265 173 Plus: after tax interest expense on mandatorily convertible securities 91 119 144 Controlling interest net income from continuing operations — for basic earnings per share calculations 11,813 13,384 317 Plus: after tax interest expense on optionally convertible securities 903 1,079 1,288 Controlling interest net income from continuing operations — for diluted earnings per share calculations Ps 12,716 14,463 1,605 Net income from discontinued operations Ps 3,499 768 1,028 Basic earnings per share Controlling interest basic earnings per share Ps 0.34 0.32 0.03 Controlling interest basic earnings per share from continuing operations 0.26 0.30 0.01 Controlling interest basic earnings per share from discontinued operations 0.08 0.02 0.02 Controlling interest diluted earnings per share 4 Controlling interest diluted earnings per share Ps 0.34 0.32 0.03 Controlling interest diluted earnings per share from continuing operations 0.26 0.30 0.01 Controlling interest diluted earnings per share from discontinued operations 0.08 0.02 0.02 1 The weighted average number of shares outstanding in 2016 and 2015 reflects the shares issued as a result of the capitalization of retained earnings declared on March 2016 and March 2015, as applicable (note 20.1). 2 According to resolution of the Parent Company’s stockholders’ meeting on March 30, 2017. 3 The number of CPOs to be issued under the executive share-based compensation programs, as well as the total amount of CPOs committed for issuance in the future under the mandatorily and optionally convertible securities, are computed from the beginning of the reporting period. The number of shares resulting from the executives’ stock option programs is determined under the inverse treasury method. 4 For 2017, 2016 and 2015, the effects on the denominator and numerator of potential dilutive shares generate antidilution; therefore, there is no change between the reported basic earnings per share and diluted earnings per share.

Commitments (Tables)

Commitments (Tables)	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Summary of Contractual Obligations	As of December 31, 2017 and 2016, CEMEX had the following contractual obligations: (U.S. dollars millions) 2017 2016 Obligations Less than 1-3 years 3-5 years More 5 years Total Total Long-term debt US$ 798 519 2,411 6,164 9,892 11,379 Finance lease obligations 1 36 87 52 — 175 107 Convertible notes 2 379 527 — — 906 1,205 Total debt and other financial obligations 3 1,213 1,133 2,463 6,164 10,973 12,691 Operating leases 4 109 181 136 68 494 515 Interest payments on debt 5 448 968 809 848 3,073 3,996 Pension plans and other benefits 6 156 307 316 808 1,587 1,414 Purchases of raw materials, fuel and energy 7 649 810 866 2,001 4,326 4,440 Total contractual obligations US$ 2,575 3,399 4,590 9,889 20,453 23,056 Ps 50,599 66,790 90,193 194,319 401,901 477,720 1 Represent nominal cash flows. As of December 31, 2017, the NPV of future payments under such leases was US$158 (Ps3,105), of which, US$79 (Ps1,552) refers to payments from 1 to 3 years and US$48 (Ps943) refer to payments from 3 to 5 years. 2 Refers to the components of liability of the convertible notes described in note 16.2 and assumes repayment at maturity and no conversion of the notes. 3 The schedule of debt payments, which includes current maturities, does not consider the effect of any refinancing of debt that may occur during the following years. In the past, CEMEX has replaced its long-term obligations for others of a similar nature. 4 The amounts represent nominal cash flows. CEMEX has operating leases, primarily for operating facilities, cement storage and distribution facilities and certain transportation and other equipment, under which annual rental payments are required plus the payment of certain operating expenses. Rental expense was US$115 (Ps2,252) in 2017, US$121 (Ps2,507) in 2016 and US$114 (Ps1,967) in 2015. 5 Estimated cash flows on floating rate denominated debt were determined using the floating interest rates in effect as of December 31, 2017 and 2016. 6 Represents estimated annual payments under these benefits for the next 10 years (note 18), including the estimate of new retirees during such future years. 7 Future payments for the purchase of raw materials are presented on the basis of contractual nominal cash flows. Future nominal payments for energy were estimated for all contractual commitments on the basis of an aggregate average expected consumption per year using the future prices of energy established in the contracts for each period. Future payments also include CEMEX’s commitments for the purchase of fuel.

Main Subsidiaries (Tables)

Main Subsidiaries (Tables)	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Summary of Main Subsidiaries Interests	The main subsidiaries as of December 31, 2017 and 2016 were as follows: % Interest Subsidiary Country 2017 2016 CEMEX México, S. A. de C.V. 1 Mexico 100.0 100.0 CEMEX España, S.A. 2 Spain 99.9 99.9 CEMEX, Inc. United States of America 100.0 100.0 CEMEX Latam Holdings, S.A. 3 Spain 73.2 73.3 CEMEX (Costa Rica), S.A. Costa Rica 99.1 99.1 CEMEX Nicaragua, S.A. Nicaragua 100.0 100.0 Assiut Cement Company Egypt 95.8 95.8 CEMEX Colombia S.A. 4 Colombia 99.9 99.9 Cemento Bayano, S.A. 5 Panama 100.0 100.0 CEMEX Dominicana, S.A. Dominican Republic 100.0 100.0 Trinidad Cement Limited Trinidad and Tobago 69.8 — CEMEX de Puerto Rico Inc. Puerto Rico 100.0 100.0 CEMEX France Gestion (S.A.S.) France 100.0 100.0 CEMEX Holdings Philippines, Inc. 6 Philippines 55.0 55.0 Solid Cement Corporation 6 Philippines 100.0 100.0 APO Cement Corporation 6 Philippines 100.0 100.0 CEMEX Holdings (Malaysia) Sdn Bhd Malaysia 100.0 100.0 CEMEX U.K. United Kingdom 100.0 100.0 CEMEX Deutschland, AG. Germany 100.0 100.0 CEMEX Czech Republic, s.r.o. Czech Republic 100.0 100.0 CEMEX Polska sp. Z.o.o. Poland 100.0 100.0 CEMEX Holdings (Israel) Ltd. Israel 100.0 100.0 CEMEX SIA Latvia 100.0 100.0 CEMEX Topmix LLC, CEMEX Supermix LLC and CEMEX Falcon LLC 7 United Arab Emirates 100.0 100.0 Neoris N.V. 8 The Netherlands 99.8 99.8 CEMEX International Trading, LLC 9 United States of America 100.0 100.0 Transenergy, Inc. 10 United States of America 100.0 100.0 1 CEMEX México, S.A. de C.V. is the indirect holding company of CEMEX España, S.A. and subsidiaries. 2 CEMEX España, S.A is the indirect holding company of most of CEMEX’s international operations. 3 The interest reported excludes own shares held at CLH’s treasury. CLH, entity incorporated in Spain, trades its ordinary shares in the Colombian Stock Exchange under the symbol CLH, is the indirect holding company of CEMEX’s operations in Colombia, Panama, Costa Rica, Guatemala, Nicaragua, El Salvador and Brazil (note 20.4). 4 Represents our 99.7% and 98.9% interest in ordinary and preferred shares, respectively. 5 Includes a 0.515% interest held on Cemento Bayano’s treasury. 6 Represents CHP direct and indirect interest. CEMEX’s operations in the Philippines are conducted through CHP, subsidiary incorporated in the Philippines which since July 2016 trades its ordinary shares in the Philippines Stock Exchange under the symbol CHP (note 20.4). 7 CEMEX owns a 49% equity interest in each of these entities and holds the remaining 51% of the economic benefits, through agreements with other shareholders. 8 Neoris N.V. is the holding company of the entities involved in the sale of information technology solutions and services. 9 CEMEX International Trading, LLC is involved in the international trading of CEMEX’s products. 10 Formerly named Gulf Coast Portland Cement Co., it is engaged in the procurement and trading of fuels, such as coal and petroleum coke, used in certain operations of CEMEX’s.

Significant Accounting Polici57

Significant Accounting Policies - Additional Information (Detail) shares in Millions, $ in Millions	Apr. 05, 2017QuarryPlantMT	Dec. 31, 2017MXN ($)shares	Dec. 31, 2016MXN ($)	Dec. 31, 2015MXN ($)shares
Disclosure of significant accounting policies [line items]
Capitalization of retained earnings		$ 0	$ 0	$ 0
Share-based compensation		817	742	655
Decrease in debt		5,468		4,517
Increase (decrease) through conversion of convertible instruments		$ 5,729		$ 5,051
Issuance of convertible subordinated notes | shares		43		42
Increase in debt and in other current accounts receivable			$ 148
Minimum equity interest for significant influence		20.00%
Useful life of intangible asset		3 to 20 years
Statutory income tax rate		30.00%	30.00%	30.00%
Mexico [member]
Disclosure of significant accounting policies [line items]
Statutory income tax rate		30.00%	30.00%	30.00%
Computer software [member]
Disclosure of significant accounting policies [line items]
Useful life of intangible asset		5 years
Extraction rights [member]
Disclosure of significant accounting policies [line items]
Useful life of intangible asset		30 to 100 years
Bottom of range [member]
Disclosure of significant accounting policies [line items]
Cumulative inflation rate over the last three years		100.00%
Threshold to declare and maintain a hedge		0.80
Top of range [member]
Disclosure of significant accounting policies [line items]
Threshold to declare and maintain a hedge		1.25
Announcement of Plan to Discontinue Operation [Member] | Duna-Drava Cement Kft [Member]
Disclosure of significant accounting policies [line items]
Number of cement plats sold | Plant	3
Number of quarries sold | Quarry	2
Number of ready mix plants sold | Plant	7
Annual production capacity of cement plant sold | MT	2.4
Mobile equipment [member]
Disclosure of significant accounting policies [line items]
Carrying amount of assets acquired through capital lease		$ 2,096	$ 7	$ 63
Issued capital and additional paid-in capital [member]
Disclosure of significant accounting policies [line items]
Capitalization of retained earnings		9,464	6,970	7,617
Additional paid-in capital [member]
Disclosure of significant accounting policies [line items]
Capitalization of retained earnings		9,459	6,966	7,613
Share-based compensation		791	$ 742	655
Increase (decrease) through conversion of convertible instruments		7,059		5,982
Equity Reserve [member]
Disclosure of significant accounting policies [line items]
Increase (decrease) through conversion of convertible instruments		(1,334)		(934)
Common Stock [member]
Disclosure of significant accounting policies [line items]
Increase (decrease) through conversion of convertible instruments		$ 4		$ 3
US Dollar [member]
Disclosure of significant accounting policies [line items]
Closing exchange rate		19.6500	20.7200	17.2300
Average exchange rate		18.8800	18.7200	15.9800

Significant Accounting Polici58

Significant Accounting Policies - Summary of Foreign Exchange Rates (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
US Dollar [member]
Disclosure of foreign exchange rates [Line Items]
Closing	19.6500	20.7200	17.2300
Average	18.8800	18.7200	15.9800
Euro [member]
Disclosure of foreign exchange rates [Line Items]
Closing	23.5866	21.7945	18.7181
Average	21.4122	20.6564	17.6041
Pounds [member]
Disclosure of foreign exchange rates [Line Items]
Closing	26.5361	25.5361	25.4130
Average	24.4977	25.0731	24.3638
Colombian Peso [member]
Disclosure of foreign exchange rates [Line Items]
Closing	0.0066	0.0069	0.0055
Average	0.0064	0.0062	0.0058
Egyptian, Pound [member]
Disclosure of foreign exchange rates [Line Items]
Closing	1.1082	1.1234	2.2036
Average	1.0620	1.8261	2.0670
Philippine pesos [member]
Disclosure of foreign exchange rates [Line Items]
Closing	0.3936	0.4167	0.3661
Average	0.3747	0.3927	0.3504

Significant Accounting Polici59

Significant Accounting Policies - Summary of Maximum Average Useful Lives of Fixed Assets (Detail)	12 Months Ended
	Dec. 31, 2017
Administrative Buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Years	35 years
Industrial Buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Years	30 years
Machinery and Equipment in Plant [member]
Disclosure of detailed information about property, plant and equipment [line items]
Years	17 years
Ready-mix Trucks and Motor Vehicles [member]
Disclosure of detailed information about property, plant and equipment [line items]
Years	9 years
Office Equipment and Other Assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Years	6 years

Significant Accounting Polici60

Significant Accounting Policies - Summary of Statutory Tax Rates (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of Effective Tax Rate [Line Items]
Applicable tax rate	30.00%	30.00%	30.00%
Mexico [member]
Reconciliation of Effective Tax Rate [Line Items]
Applicable tax rate	30.00%	30.00%	30.00%
United States [member]
Reconciliation of Effective Tax Rate [Line Items]
Applicable tax rate	35.00%	35.00%	35.00%
United Kingdom [member]
Reconciliation of Effective Tax Rate [Line Items]
Applicable tax rate	19.30%	20.00%	20.30%
France [member]
Reconciliation of Effective Tax Rate [Line Items]
Applicable tax rate	34.40%	34.40%	38.00%
Germany [member]
Reconciliation of Effective Tax Rate [Line Items]
Applicable tax rate	28.20%	28.20%	29.80%
Spain [member]
Reconciliation of Effective Tax Rate [Line Items]
Applicable tax rate	25.00%	25.00%	28.00%
Philippines [member]
Reconciliation of Effective Tax Rate [Line Items]
Applicable tax rate	30.00%	30.00%	30.00%
Colombia [member]
Reconciliation of Effective Tax Rate [Line Items]
Applicable tax rate	40.00%	40.00%	39.00%
Egypt [member]
Reconciliation of Effective Tax Rate [Line Items]
Applicable tax rate	22.50%	22.50%	22.50%
Switzerland [member]
Reconciliation of Effective Tax Rate [Line Items]
Applicable tax rate	9.60%	9.60%	9.60%
Bottom of range [member] | Other [member]
Reconciliation of Effective Tax Rate [Line Items]
Applicable tax rate	7.80%	7.80%	7.80%
Top of range [member] | Other [member]
Reconciliation of Effective Tax Rate [Line Items]
Applicable tax rate	39.00%	39.00%	39.00%

Revenues and Construction Con61

Revenues and Construction Contracts - Summary of Net Sales, After Sales and Eliminations Between Related Parties Resulting from Consolidation (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Analysis of income and expense [abstract]
From the sale of goods associated to CEMEX's main activities	$ 246,820	$ 239,696	$ 211,258
From the sale of services	3,313	3,110	2,811
From the sale of other goods and services	7,998	7,139	5,230
Total	$ 258,131	$ 249,945	$ 219,299

Revenues and Construction Con62

Revenues and Construction Contracts - Summary of Revenues and Costs Related to Construction Contracts in Progress (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Analysis of income and expense [abstract]
Revenue from construction contracts included in consolidated net sales, accumulated	$ 5,508
Costs incurred in construction contracts included in consolidated cost of sales, accumulated	(4,840)
Construction contracts gross operating profit (loss), accumulated	668
Revenue from construction contracts included in consolidated net sales	992	$ 1,033	$ 994
Costs incurred in construction contracts included in consolidated cost of sales	(1,205)	(1,133)	(919)
Construction contracts gross operating profit (loss)	$ (213)	$ (100)	$ 75

Business Combinations,Discontin

Business Combinations,Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Additional Information (Detail) $ / shares in Units, € in Millions, $ in Millions	Feb. 07, 2017USD ($)	Feb. 07, 2017MXN ($)	Feb. 07, 2017USD ($)$ / shares	Jan. 09, 2017USD ($)shares	Jan. 09, 2017TTD ($)shares	Dec. 02, 2016MXN ($)	Nov. 28, 2016USD ($)	Nov. 18, 2016USD ($)T	Nov. 18, 2016MXN ($)T	Sep. 12, 2016USD ($)T	Sep. 12, 2016MXN ($)T	May 26, 2016USD ($)	May 26, 2016MXN ($)	Oct. 31, 2015USD ($)QuarryPlant	Oct. 31, 2015MXN ($)QuarryPlant	Oct. 31, 2015EUR (€)QuarryPlant	Jan. 05, 2015USD ($)QuarryPlantMillsT	Jan. 05, 2015MXN ($)T	Jan. 05, 2015EUR (€)T	Jun. 30, 2017USD ($)	Jun. 30, 2017MXN ($)	Oct. 31, 2015USD ($)QuarryPlant	Oct. 31, 2015MXN ($)QuarryPlant	Dec. 31, 2017USD ($)T	Dec. 31, 2017MXN ($)T	Dec. 31, 2016MXN ($)GeographicalAreas	Dec. 31, 2015USD ($)	Dec. 31, 2015MXN ($)QuarryPlantMills	Dec. 31, 2015EUR (€)	Dec. 31, 2017MXN ($)	Jun. 30, 2017MXN ($)	Feb. 07, 2017MXN ($)	Feb. 01, 2017USD ($)	Feb. 01, 2017MXN ($)	Jan. 05, 2015MXN ($)QuarryPlantMills	Jan. 05, 2015EUR (€)QuarryPlantMills	Dec. 31, 2014MXN ($)
Disclosure of operating segments [line items]
Goodwill																										$ 206,319		$ 184,156		$ 195,474							$ 160,544
Proportional write off of goodwill based on relative fair values																									$ 1,804	$ 9,734		0
Number of geographical regions | GeographicalAreas																										5
Debt																										$ 236,238		229,343		193,995							$ 205,834
Share in borrowings, percentage																								80.00%	80.00%	73.00%
Top of range [member]
Disclosure of operating segments [line items]
Production capacity | T																								950,000	950,000
United States [member]
Disclosure of operating segments [line items]
Goodwill																										$ 162,692				152,486
Geographical regions																										United States
Mexico [member]
Disclosure of operating segments [line items]
Goodwill																										$ 7,529				7,371
Geographical regions																										Mexico
Europe [member]
Disclosure of operating segments [line items]
Geographical regions																										Europe
South, Central America and the Caribbean [member]
Disclosure of operating segments [line items]
Geographical regions																										South, Central America and the Caribbean
Asia, Middle East and Africa [member]
Disclosure of operating segments [line items]
Geographical regions																										Asia, Middle East and Africa
Spain [member]
Disclosure of operating segments [line items]
Goodwill																										$ 12,316				10,000
Spain [member] | Top of range [member]
Disclosure of operating segments [line items]
Share in borrowings, percentage																								1.00%	1.00%	1.00%
Other countries [member]
Disclosure of operating segments [line items]
Goodwill																										$ 550				522
Share in borrowings, percentage																								4.00%	4.00%	2.00%
Czech Republic [member]
Disclosure of operating segments [line items]
Goodwill																										$ 583				709
Trinidad Cement Limited [member]
Disclosure of operating segments [line items]
Ownership percentage																								39.50%	39.50%	39.50%
Fair value of assets acquired																																	$ 525,000,000	$ 10,936
Share price | $ / shares			$ 4.15
Debt assumed	$ 113,000,000		$ 113,000,000																													$ 2,354
Gain on Financial income and other items, net	$ 32,000,000	$ 623
Trinidad Cement Limited [member] | Mexican Peso [member]
Disclosure of operating segments [line items]
Exchange rate																																	20.83	20.83
Trinidad Cement Limited [member] | The Offer [member]
Disclosure of operating segments [line items]
Ownership percentage	69.80%	69.80%
Consideration transferred	$ 86,000,000		$ 86,000,000																													$ 1,791
Share price | $ / shares			$ 5.07
Trinidad Cement Limited [member] | Caribbean TCL [member]
Disclosure of operating segments [line items]
Ownership percentage				39.50%	39.50%																					39.50%
Cash payment for interest ownership				$ 0.76	$ 5.07
Trinidad Cement Limited [member] | Caribbean TCL [member] | The Offer [member]
Disclosure of operating segments [line items]
Option to acquire, number of shares | shares				132,616,942	132,616,942
Additional ownership percentage acquired				30.20%	30.20%
Concrete Reinforced Pipe Manufacturing Business [member]
Disclosure of operating segments [line items]
Proceeds from divestiture							$ 500,000,000
Contingent consideration on divestiture							$ 40,000,000
Concrete Reinforced Pipe Manufacturing Business [member] | United States [member]
Disclosure of operating segments [line items]
Goodwill																								$ 260,000,000						5,369
Gain (loss) on sale of business																								148,000,000	$ 3,083
Siam City Cement Public Company Ltd. [member]
Disclosure of operating segments [line items]
Proceeds from divestiture												$ 70,000,000	$ 1,450
Gain (loss) on sale of business												24,000,000	424
Foreign currency translation gain loss on disposal												$ 7,000,000	$ 122
Rohrdorfer Group [member]
Disclosure of operating segments [line items]
Proceeds from divestiture														$ 179,000,000	$ 3,090	€ 165
Gain (loss) on sale of business																						$ 45,000,000	$ 741
Foreign currency translation gain loss on disposal																						$ 10,000,000	$ 215
Number of quarries sold | Quarry														29,000,000	29,000,000	29,000,000						29,000,000	29,000,000
Number of ready mix plants sold | Plant														68,000,000	68,000,000	68,000,000						68,000,000	68,000,000
GCC [member]
Disclosure of operating segments [line items]
Proceeds from divestiture								$ 306,000,000	$ 6,340
Gain (loss) on sale of business								104,000,000	2,159
Foreign currency translation gain loss on disposal								$ 65,000,000	$ 1,347
Annual production capacity of cement plant sold | T								537,000	537,000
Proportional write off of goodwill based on relative fair values								$ 161,000,000	$ 3,340
Eagle Materials Inc [member]
Disclosure of operating segments [line items]
Goodwill																								211,000,000						$ 4,365
Proceeds from divestiture										$ 400,000,000	$ 8,288
Gain (loss) on sale of business																								$ 188,000,000	$ 3,694
Annual production capacity of cement plant sold | T										730,000	730,000
Eagle Materials Inc And Grupo Cementos de Chihuahua SAB De C.V. [member]
Disclosure of operating segments [line items]
Threshold percentage for measuring net assets for consolidation								5.00%	5.00%
Cementos Espaoles de Bombeo, S. de R.L. [member]
Disclosure of operating segments [line items]
Proceeds from divestiture						$ 1,649
Fixed assets sold						$ 309
Lease term of facilities						10 years
Aggregate initial amount of lease						$ 1,340
Contingent revenue						$ 557
Holcim Ltd. [member]
Disclosure of operating segments [line items]
Fair value of assets acquired																												4,575
Final payment in cash for acquisition of assets																	$ 40,000,000																		$ 594	€ 33
Proceeds from divestiture																											$ 207,000,000	$ 3,047	€ 171
Number of quarries sold | Quarry																												22
Number of ready mix plants sold | Plant																												79
Number of cements plants sold | Plant																												1
Number of cements grinding mills sold | Mills																												2
Number of slag granulator sold | Plant																												1
Holcim Ltd. [member] | Spain [member]
Disclosure of operating segments [line items]
Consideration transferred																	$ 129,000,000																		$ 1,894	€ 106
Fair value of assets acquired																												$ 2,065
Number of cement plants acquired | Plant																	1																		1	1
Production capacity | T																	850,000	850,000	850,000
Number of cement mill | Mills																	1																		1	1
Grinding capacity | T																	900,000	900,000	900,000
Other assets																	$ 106,000,000																		$ 1,562	€ 88
Goodwill																	22,000,000																		328	19
Holcim Ltd. [member] | Czech Republic [member]
Disclosure of operating segments [line items]
Consideration transferred																	$ 139,000,000																		$ 2,049	€ 115
Fair value of assets acquired																												$ 2,510
Number of cement plants acquired | Plant																	1																		1	1
Number of quarries acquired | Quarry																	4																		4	4
Number of ready mix plants acquired | Plant																	17																		17	17
Holcim Ltd. [member] | Germany [member]
Disclosure of operating segments [line items]
Consideration Paid																	$ 207,000,000	$ 3,047	€ 171
Finance subsidiaries [member]
Disclosure of operating segments [line items]
Share in borrowings, percentage																								15.00%	15.00%	25.00%
Heidelberg Cement Group [member]
Disclosure of operating segments [line items]
Goodwill																				$ 73,000,000											$ 64
Proceeds from divestiture																				150,000,000
Gain (loss) on sale of business																				$ 22,000,000	$ 399

Business Combination, Discontin

Business Combination, Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Fair Value To Assets Acquired And Liabilities Assumed (Detail) - Feb. 01, 2017 - Trinidad Cement Limited [member] $ in Millions, $ in Millions	USD ($)	MXN ($)
Disclosure of detailed information about business combination [line items]
Current assets	$ 84
Property, machinery and equipment	331
Intangible assets and other non-current assets (includes goodwill of US$100)	110
Fair value of assets acquired	525	$ 10,936
Current liabilities (includes debt of US$47)	122
Non-current liabilities (includes debt of US$97 and deferred tax liabilities of US$19)	154
Total liabilities	276
Net assets	249
Non-controlling interest net assets	70
Controlling interest net assets	$ 179

Business Combination, Discont65

Business Combination, Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Fair Value To Assets Acquired And Liabilities Assumed (Parenthetical) (Detail) - Trinidad Cement Limited [member] $ in Millions	Feb. 01, 2017USD ($)
Disclosure of detailed information about business combination [line items]
Goodwill included in intangible assets and other non-current assets	$ 100
Debt included in current liabilities	47
Debt included in non-current liabilities	97
Deferred tax liabilities	$ 19

Business Combination - Summary

Business Combination - Summary of Purchase Price Allocation (Detail) - Holcim Ltd. [member] $ in Millions	Dec. 31, 2015MXN ($)
Disclosure of detailed information about business combination [line items]
Current assets	$ 290
Property, machinery and equipment	3,423
Other non-current assets	270
Intangible assets	592
Fair value of assets acquired	4,575
Current liabilities	174
Non-current liabilities	458
Fair value of liabilities assumed	632
Fair value of net assets acquired	3,943
Czech Republic [member]
Disclosure of detailed information about business combination [line items]
Current assets	231
Property, machinery and equipment	1,419
Other non-current assets	270
Intangible assets	590
Fair value of assets acquired	2,510
Current liabilities	117
Non-current liabilities	344
Fair value of liabilities assumed	461
Fair value of net assets acquired	2,049
Spain [member]
Disclosure of detailed information about business combination [line items]
Current assets	59
Property, machinery and equipment	2,004
Other non-current assets	0
Intangible assets	2
Fair value of assets acquired	2,065
Current liabilities	57
Non-current liabilities	114
Fair value of liabilities assumed	171
Fair value of net assets acquired	$ 1,894

Business Combination, Discont67

Business Combination, Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Combined Condensed Financial Information of Reclassification of Assets and Liabilities Held for Sale (Detail) - Croatia [Member] $ in Millions	Dec. 31, 2016MXN ($)
Disclosure of Discontinued Operations [line items]
Current assets	$ 573
Property, machinery and equipment, net	3,023
Intangible assets, net and other non-current assets	568
Total assets held for sale	4,164
Current liabilities	539
Non-current liabilities	112
Total liabilities directly related to assets held for sale	651
Net assets held for sale	$ 3,513

Business Combination- Discontin

Business Combination- Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Condensed Combined Information of the Statement of Operations of Discontinued Operations (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Discontinued Operations [line items]
Sales	$ 1,549	$ 8,979	$ 11,888
Other products (expenses), net	14	(2)	23
Net income	3,499	768	1,028
Croatia [Member]
Disclosure of Discontinued Operations [line items]
Sales		1,853	1,892
Cost of sales and operating expenses		(1,629)	(1,665)
Other products (expenses), net		(31)	13
Financial expenses, net and others		(24)	(35)
Earnings before income tax		169	205
Income tax		(29)	(43)
Net income		140	162
Pacific Northwest Materials And Concrete Pipe Business [Member] | United States, Bangladesh, Thailand, Austria, and Hungary [member]
Disclosure of Discontinued Operations [line items]
Sales	1,549	8,979	11,888
Cost of sales and operating expenses	(1,531)	(8,440)	(11,665)
Other products (expenses), net	14	(2)	23
Financial expenses, net and others	(3)	(57)	49
Earnings before income tax	29	480	295
Income tax	0	(101)	6
Net income	29	379	301
Net income of non-controlling interest	0	0	(15)
Net income of controlling interest	$ 29	$ 379	$ 286

Business Combination, Discont69

Business Combination, Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Condensed Combined Financial Information of Balance Sheet (Detail) - Pacific Northwest Materials And Concrete Pipe Business [Member] - United States, Bangladesh, Thailand, Austria, and Hungary [member] $ in Millions	Dec. 31, 2016MXN ($)
Disclosure of Discontinued Operations [line items]
Current assets	$ 1,146
Property, machinery and equipment, net	4,188
Intangible assets, net and other non-current assets	6,835
Total assets	12,169
Current liabilities	(99)
Non-current liabilities	(336)
Total liabilities	(435)
Net assets	$ 11,734

Business Combination,Discontinu

Business Combination,Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Combined Statement of Operations Information of the Net Assets Sold (Detail) - Eagle Materials Inc And Grupo Cementos de Chihuahua SAB De C.V. [member] - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Discontinued Operations And Disposal Groups [Line Items]
Net sales	$ 86	$ 3,322	$ 3,538
Operating costs and expenses	(71)	(2,800)	(2,795)
Operating earnings before other expenses, net	$ 15	$ 522	$ 743

Business Combination,Disconti71

Business Combination,Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Consolidating Statements of Operations by Geographic Operating Segments (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of operating segments [line items]
Net sales (including related parties)	$ 275,074	$ 263,516	$ 238,812
Less: Related parties	(16,943)	(13,571)	(19,513)
Net sales	258,131	249,945	219,299
Operating EBITDA	48,563	51,534	41,534
Less: Depreciation and amortization, continuing and discontinued operations	15,992	15,991	14,658
Operating earnings before other expenses, net	32,571	35,543	26,876
Other expenses, net	(3,815)	(1,670)	(3,032)
Financial expense	(19,301)	(21,487)	(19,784)
Other financing items, net	3,616	4,489	(1,333)
Net sales (including related parties), continuing and discontinued operations	1,550	9,186	11,944
Less: Related parties, continuing and discontinued operations	(1)	(207)	(56)
Net sales, continuing and discontinued operations	1,549	8,979	11,888
Operating EBITDA, continuing and discontinued operations	75	1,232	1,201
Less: Depreciation and amortization, continuing and discontinued operations	57	693	978
Operating earnings before other expenses, net, discontinued operations	18	539	223
Other expenses, net, continuing and discontinued operations	14	(2)	23
Financial expense, continuing and discontinued operations	(3)	(10)	(17)
Other financing items, net, continuing and discontinued operations	0	(47)	66
Net sales (including related parties), continuing and discontinued operations	276,624	272,702	250,756
Less: Related parties, continuing and discontinued operations	(16,944)	(13,778)	(19,569)
Net sales, continuing and discontinued operations	259,680	258,924	231,187
Operating EBITDA, continuing and discontinued operations	48,638	52,766	42,735
Less: Depreciation and amortization, continuing and discontinued operations	16,049	16,684	15,636
Operating earnings before other expenses, net, continuing and discontinued operations	32,589	36,082	27,099
Other expenses, net, continuing and discontinued operations	(3,801)	(1,672)	(3,009)
Financial expense, continuing and discontinued operations	(19,304)	(21,497)	(19,801)
Other financing items, net, continuing and discontinued operations	3,616	4,442	(1,267)
Mexico [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	58,442	53,579	50,260
Less: Related parties	(1,075)	(848)	(5,648)
Net sales	57,367	52,731	44,612
Operating EBITDA	21,215	19,256	15,362
Less: Depreciation and amortization, continuing and discontinued operations	2,246	2,390	2,399
Operating earnings before other expenses, net	18,969	16,866	12,963
Other expenses, net	(687)	(608)	(684)
Financial expense	(409)	(339)	(210)
Other financing items, net	(534)	2,695	915
United States [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	65,536	66,554	56,846
Less: Related parties	0	0	(18)
Net sales	65,536	66,554	56,828
Operating EBITDA	10,652	10,973	7,985
Less: Depreciation and amortization, continuing and discontinued operations	6,200	6,400	5,629
Operating earnings before other expenses, net	4,452	4,573	2,356
Other expenses, net	3,202	2,919	234
Financial expense	(631)	(487)	(437)
Other financing items, net	(177)	(212)	(144)
United Kingdom [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	20,179	21,153	20,227
Less: Related parties	0	0	0
Net sales	20,179	21,153	20,227
Operating EBITDA	2,763	3,606	2,705
Less: Depreciation and amortization, continuing and discontinued operations	997	1,047	1,004
Operating earnings before other expenses, net	1,766	2,559	1,701
Other expenses, net	450	711	(147)
Financial expense	(77)	(63)	(95)
Other financing items, net	(397)	(393)	(299)
France [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	16,162	14,535	12,064
Less: Related parties	0	0	0
Net sales	16,162	14,535	12,064
Operating EBITDA	855	669	670
Less: Depreciation and amortization, continuing and discontinued operations	549	484	438
Operating earnings before other expenses, net	306	185	232
Other expenses, net	(129)	(110)	(8)
Financial expense	(61)	(53)	(48)
Other financing items, net	18	2	(10)
Germany [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	10,056	9,572	8,285
Less: Related parties	(1,339)	(1,385)	(1,276)
Net sales	8,717	8,187	7,009
Operating EBITDA	743	553	542
Less: Depreciation and amortization, continuing and discontinued operations	509	464	389
Operating earnings before other expenses, net	234	89	153
Other expenses, net	(11)	(64)	49
Financial expense	(14)	(15)	(14)
Other financing items, net	(63)	(85)	(61)
Spain [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	6,870	6,563	6,151
Less: Related parties	(990)	(841)	(755)
Net sales	5,880	5,722	5,396
Operating EBITDA	344	814	1,031
Less: Depreciation and amortization, continuing and discontinued operations	638	663	604
Operating earnings before other expenses, net	(294)	151	427
Other expenses, net	(711)	(112)	(735)
Financial expense	(34)	(37)	(72)
Other financing items, net	12	(9)	(2)
Poland [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	5,552	4,799	4,445
Less: Related parties	(74)	(88)	(108)
Net sales	5,478	4,711	4,337
Operating EBITDA	647	579	598
Less: Depreciation and amortization, continuing and discontinued operations	361	330	295
Operating earnings before other expenses, net	286	249	303
Other expenses, net	(140)	6	18
Financial expense	(30)	(11)	(54)
Other financing items, net	(8)	123	33
Rest of Europe [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	9,439	7,935	7,457
Less: Related parties	(864)	(541)	(660)
Net sales	8,575	7,394	6,797
Operating EBITDA	1,463	1,141	1,110
Less: Depreciation and amortization, continuing and discontinued operations	688	660	739
Operating earnings before other expenses, net	775	481	371
Other expenses, net	(131)	(103)	(187)
Financial expense	(24)	(33)	(23)
Other financing items, net	71	77	(122)
Colombia [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	10,685	12,415	11,562
Less: Related parties	0	(1)	(2)
Net sales	10,685	12,414	11,560
Operating EBITDA	2,166	3,975	4,041
Less: Depreciation and amortization, continuing and discontinued operations	507	489	500
Operating earnings before other expenses, net	1,659	3,486	3,541
Other expenses, net	(642)	(575)	(88)
Financial expense	(129)	46	(50)
Other financing items, net	(36)	38	(570)
Panama [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	5,112	4,906	4,599
Less: Related parties	(98)	(124)	(68)
Net sales	5,014	4,782	4,531
Operating EBITDA	2,007	2,170	1,869
Less: Depreciation and amortization, continuing and discontinued operations	319	340	298
Operating earnings before other expenses, net	1,688	1,830	1,571
Other expenses, net	(20)	(7)	(180)
Financial expense	(5)	(27)	(13)
Other financing items, net	7	5	2
Costa Rica [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	2,805	2,818	2,658
Less: Related parties	(379)	(351)	(229)
Net sales	2,426	2,467	2,429
Operating EBITDA	1,000	1,127	1,096
Less: Depreciation and amortization, continuing and discontinued operations	99	116	102
Operating earnings before other expenses, net	901	1,011	994
Other expenses, net	0	(23)	(2)
Financial expense	(5)	(11)	(9)
Other financing items, net	29	27	2
Caribbean TCL [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	4,332
Less: Related parties	(49)
Net sales	4,283
Operating EBITDA	1,059
Less: Depreciation and amortization, continuing and discontinued operations	610
Operating earnings before other expenses, net	449
Other expenses, net	(139)
Financial expense	(215)
Other financing items, net	(25)
Rest of South, Central America and the Caribbean [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	11,716	11,378	12,177
Less: Related parties	(872)	(778)	(1,988)
Net sales	10,844	10,600	10,189
Operating EBITDA	2,602	2,875	2,295
Less: Depreciation and amortization, continuing and discontinued operations	449	437	445
Operating earnings before other expenses, net	2,153	2,438	1,850
Other expenses, net	(1,069)	(1,226)	(87)
Financial expense	(23)	(28)	(22)
Other financing items, net	(12)	(182)	(119)
Philippines [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	8,296	9,655	8,436
Less: Related parties	0	0	(4)
Net sales	8,296	9,655	8,432
Operating EBITDA	1,394	2,687	2,206
Less: Depreciation and amortization, continuing and discontinued operations	528	530	447
Operating earnings before other expenses, net	866	2,157	1,759
Other expenses, net	89	21	(12)
Financial expense	(3)	(1)	(20)
Other financing items, net	(24)	(24)	19
Egypt [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	3,862	6,950	6,923
Less: Related parties	0	(5)	(5)
Net sales	3,862	6,945	6,918
Operating EBITDA	594	2,454	1,777
Less: Depreciation and amortization, continuing and discontinued operations	299	539	536
Operating earnings before other expenses, net	295	1,915	1,241
Other expenses, net	(210)	(213)	(254)
Financial expense	(60)	(78)	(115)
Other financing items, net	574	(253)	114
Rest of Asia, Middle East and Africa [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	13,516	11,858	9,929
Less: Related parties	0	(12)	0
Net sales	13,516	11,846	9,929
Operating EBITDA	1,855	1,617	1,250
Less: Depreciation and amortization, continuing and discontinued operations	363	299	244
Operating earnings before other expenses, net	1,492	1,318	1,006
Other expenses, net	(174)	(112)	(53)
Financial expense	(28)	(27)	(23)
Other financing items, net	12	27	(1)
Other Locations [member]
Disclosure of operating segments [line items]
Net sales (including related parties)	22,514	18,846	16,793
Less: Related parties	(11,203)	(8,597)	(8,752)
Net sales	11,311	10,249	8,041
Operating EBITDA	(2,796)	(2,962)	(3,003)
Less: Depreciation and amortization, continuing and discontinued operations	630	803	589
Operating earnings before other expenses, net	(3,426)	(3,765)	(3,592)
Other expenses, net	(3,493)	(2,174)	(896)
Financial expense	(17,553)	(20,323)	(18,579)
Other financing items, net	$ 4,169	$ 2,653	$ (1,090)

Business Combination,Disconti72

Business Combination,Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Consolidating Statements of Operations by Geographic Operating Segments (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Caribbean TCL [member] | Trinidad Cement Limited [member]
Disclosure of operating segments [line items]
Non-controlling interest ownership percentage	30.20%
CEMEX Latam Holdings, S.A. [member]
Disclosure of operating segments [line items]
Non-controlling interest ownership percentage	26.75%	26.72%
CEMEX Holdings Philippines, Inc. [member]
Disclosure of operating segments [line items]
Non-controlling interest ownership percentage	45.00%	45.00%

Business Combination,Disconti73

Business Combination,Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Balance sheet Information by Geographic Segment (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of operating segments [line items]
Total assets	$ 567,581	$ 599,728
Total liabilities	357,163	403,003
Net assets by segment	210,418	196,725
Additions to fixed assets	12,419	13,279
Mexico [member]
Disclosure of operating segments [line items]
Total assets	71,521	70,502
Total liabilities	23,574	20,752
Net assets by segment	47,947	49,750
Additions to fixed assets	2,133	1,651
United States [member]
Disclosure of operating segments [line items]
Total assets	268,342	289,079
Total liabilities	32,366	30,118
Net assets by segment	235,976	258,961
Additions to fixed assets	3,498	3,760
United Kingdom [member]
Disclosure of operating segments [line items]
Total assets	34,881	32,573
Total liabilities	24,160	22,914
Net assets by segment	10,721	9,659
Additions to fixed assets	1,010	599
France [member]
Disclosure of operating segments [line items]
Total assets	19,536	17,764
Total liabilities	7,360	6,829
Net assets by segment	12,176	10,935
Additions to fixed assets	372	379
Germany [member]
Disclosure of operating segments [line items]
Total assets	9,095	8,470
Total liabilities	6,848	6,694
Net assets by segment	2,247	1,776
Additions to fixed assets	441	507
Spain [member]
Disclosure of operating segments [line items]
Total assets	25,731	27,264
Total liabilities	3,543	3,206
Net assets by segment	22,188	24,058
Additions to fixed assets	553	490
Poland [member]
Disclosure of operating segments [line items]
Total assets	5,486	5,046
Total liabilities	3,086	2,072
Net assets by segment	2,400	2,974
Additions to fixed assets	230	181
Rest of Europe [member]
Disclosure of operating segments [line items]
Total assets	16,281	15,615
Total liabilities	3,627	3,221
Net assets by segment	12,654	12,394
Additions to fixed assets	321	258
Colombia [member]
Disclosure of operating segments [line items]
Total assets	24,406	26,532
Total liabilities	11,307	11,548
Net assets by segment	13,099	14,984
Additions to fixed assets	1,178	3,633
Panama [member]
Disclosure of operating segments [line items]
Total assets	7,232	7,958
Total liabilities	1,029	1,144
Net assets by segment	6,203	6,814
Additions to fixed assets	152	126
Costa Rica [member]
Disclosure of operating segments [line items]
Total assets	1,869	1,928
Total liabilities	646	691
Net assets by segment	1,223	1,237
Additions to fixed assets	42	73
Caribbean TCL [member]
Disclosure of operating segments [line items]
Total assets	11,004
Total liabilities	4,917
Net assets by segment	6,087
Additions to fixed assets	584
Rest of South, Central America and the Caribbean [member]
Disclosure of operating segments [line items]
Total assets	11,329	12,545
Total liabilities	4,366	4,133
Net assets by segment	6,963	8,412
Additions to fixed assets	357	441
Philippines [member]
Disclosure of operating segments [line items]
Total assets	11,554	12,314
Total liabilities	2,617	2,696
Net assets by segment	8,937	9,618
Additions to fixed assets	518	341
Egypt [member]
Disclosure of operating segments [line items]
Total assets	4,603	5,513
Total liabilities	1,776	2,907
Net assets by segment	2,827	2,606
Additions to fixed assets	418	381
Rest of Asia, Middle East and Africa [member]
Disclosure of operating segments [line items]
Total assets	13,671	12,347
Total liabilities	8,027	6,994
Net assets by segment	5,644	5,353
Additions to fixed assets	449	394
Other Locations [member]
Disclosure of operating segments [line items]
Total assets	29,662	33,249
Total liabilities	217,914	276,269
Net assets by segment	(188,252)	(243,020)
Additions to fixed assets	163	65
Continuing Operations [member]
Disclosure of operating segments [line items]
Total assets	566,203	578,699
Total liabilities	357,163	402,188
Net assets by segment	209,040	176,511
Additions to fixed assets	12,419	13,279
Disposal groups classified as held for sale [member]
Disclosure of operating segments [line items]
Total assets	1,378	21,029
Total liabilities	0	815
Net assets by segment	1,378	20,214
Additions to fixed assets	0	0
Equity accounted investment [member]
Disclosure of operating segments [line items]
Total assets	8,572	10,488
Equity accounted investment [member] | Mexico [member]
Disclosure of operating segments [line items]
Total assets	241	490
Equity accounted investment [member] | United States [member]
Disclosure of operating segments [line items]
Total assets	1,573	1,587
Equity accounted investment [member] | United Kingdom [member]
Disclosure of operating segments [line items]
Total assets	107	104
Equity accounted investment [member] | France [member]
Disclosure of operating segments [line items]
Total assets	1,055	909
Equity accounted investment [member] | Germany [member]
Disclosure of operating segments [line items]
Total assets	85	74
Equity accounted investment [member] | Spain [member]
Disclosure of operating segments [line items]
Total assets	0	13
Equity accounted investment [member] | Poland [member]
Disclosure of operating segments [line items]
Total assets	9	10
Equity accounted investment [member] | Rest of Europe [member]
Disclosure of operating segments [line items]
Total assets	158	270
Equity accounted investment [member] | Colombia [member]
Disclosure of operating segments [line items]
Total assets	0	0
Equity accounted investment [member] | Panama [member]
Disclosure of operating segments [line items]
Total assets	0	0
Equity accounted investment [member] | Costa Rica [member]
Disclosure of operating segments [line items]
Total assets	0	0
Equity accounted investment [member] | Caribbean TCL [member]
Disclosure of operating segments [line items]
Total assets	0
Equity accounted investment [member] | Rest of South, Central America and the Caribbean [member]
Disclosure of operating segments [line items]
Total assets	31	28
Equity accounted investment [member] | Philippines [member]
Disclosure of operating segments [line items]
Total assets	6	6
Equity accounted investment [member] | Egypt [member]
Disclosure of operating segments [line items]
Total assets	1	1
Equity accounted investment [member] | Rest of Asia, Middle East and Africa [member]
Disclosure of operating segments [line items]
Total assets	0	0
Equity accounted investment [member] | Other Locations [member]
Disclosure of operating segments [line items]
Total assets	5,306	6,996
Equity accounted investment [member] | Continuing Operations [member]
Disclosure of operating segments [line items]
Total assets	8,572	10,488
Equity accounted investment [member] | Disposal groups classified as held for sale [member]
Disclosure of operating segments [line items]
Total assets	0	0
All other assets [member]
Disclosure of operating segments [line items]
Total assets	559,009	589,240
All other assets [member] | Mexico [member]
Disclosure of operating segments [line items]
Total assets	71,280	70,012
All other assets [member] | United States [member]
Disclosure of operating segments [line items]
Total assets	266,769	287,492
All other assets [member] | United Kingdom [member]
Disclosure of operating segments [line items]
Total assets	34,774	32,469
All other assets [member] | France [member]
Disclosure of operating segments [line items]
Total assets	18,481	16,855
All other assets [member] | Germany [member]
Disclosure of operating segments [line items]
Total assets	9,010	8,396
All other assets [member] | Spain [member]
Disclosure of operating segments [line items]
Total assets	25,731	27,251
All other assets [member] | Poland [member]
Disclosure of operating segments [line items]
Total assets	5,477	5,036
All other assets [member] | Rest of Europe [member]
Disclosure of operating segments [line items]
Total assets	16,123	15,345
All other assets [member] | Colombia [member]
Disclosure of operating segments [line items]
Total assets	24,406	26,532
All other assets [member] | Panama [member]
Disclosure of operating segments [line items]
Total assets	7,232	7,958
All other assets [member] | Costa Rica [member]
Disclosure of operating segments [line items]
Total assets	1,869	1,928
All other assets [member] | Caribbean TCL [member]
Disclosure of operating segments [line items]
Total assets	11,004
All other assets [member] | Rest of South, Central America and the Caribbean [member]
Disclosure of operating segments [line items]
Total assets	11,298	12,517
All other assets [member] | Philippines [member]
Disclosure of operating segments [line items]
Total assets	11,548	12,308
All other assets [member] | Egypt [member]
Disclosure of operating segments [line items]
Total assets	4,602	5,512
All other assets [member] | Rest of Asia, Middle East and Africa [member]
Disclosure of operating segments [line items]
Total assets	13,671	12,347
All other assets [member] | Other Locations [member]
Disclosure of operating segments [line items]
Total assets	24,356	26,253
All other assets [member] | Continuing Operations [member]
Disclosure of operating segments [line items]
Total assets	557,631	568,211
All other assets [member] | Disposal groups classified as held for sale [member]
Disclosure of operating segments [line items]
Total assets	$ 1,378	$ 21,029

Business Combination,Disconti74

Business Combination,Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Balance sheet Information by Geographic Segment (Parenthetical) (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure - Business Combination,Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Balance sheet Information by Geographic Segment [Abstract]
Capital expenditure incurred	$ 9,514	$ 12,676	$ 11,454

Business Combination,Disconti75

Business Combination,Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Net Sales by Product and Geographic Segment (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of geographical areas [line items]
Net sales	$ 258,131	$ 249,945	$ 219,299
Net sales, discontinued operations	1,549	8,979	11,888
Net sales, continuing and discontinued operations	259,680	258,924	231,187
Mexico [member]
Disclosure of geographical areas [line items]
Net sales	57,367	52,731	44,612
United States [member]
Disclosure of geographical areas [line items]
Net sales	65,536	66,554	56,828
United Kingdom [member]
Disclosure of geographical areas [line items]
Net sales	20,179	21,153	20,227
France [member]
Disclosure of geographical areas [line items]
Net sales	16,162	14,535	12,064
Germany [member]
Disclosure of geographical areas [line items]
Net sales	8,717	8,187	7,009
Spain [member]
Disclosure of geographical areas [line items]
Net sales	5,880	5,722	5,396
Poland [member]
Disclosure of geographical areas [line items]
Net sales	5,478	4,711	4,337
Rest of Europe [member]
Disclosure of geographical areas [line items]
Net sales	8,575	7,394	6,797
Colombia [member]
Disclosure of geographical areas [line items]
Net sales	10,685	12,414	11,560
Panama [member]
Disclosure of geographical areas [line items]
Net sales	5,014	4,782	4,531
Costa Rica [member]
Disclosure of geographical areas [line items]
Net sales	2,426	2,467	2,429
Rest of South, Central America and the Caribbean [member]
Disclosure of geographical areas [line items]
Net sales	10,844	10,600	10,189
Philippines [member]
Disclosure of geographical areas [line items]
Net sales	8,296	9,655	8,432
Egypt [member]
Disclosure of geographical areas [line items]
Net sales	3,862	6,945	6,918
Rest of Asia, Middle East and Africa [member]
Disclosure of geographical areas [line items]
Net sales	13,516	11,846	9,929
Other Locations [member]
Disclosure of geographical areas [line items]
Net sales	11,311	10,249	8,041
Caribbean TCL [member]
Disclosure of geographical areas [line items]
Net sales	4,283
Operating segments [member] | Cement segment [member]
Disclosure of geographical areas [line items]
Net sales	134,329	130,682	112,968
Net sales, discontinued operations	0	422	1,046
Net sales, continuing and discontinued operations	134,329	131,104	114,014
Operating segments [member] | Cement segment [member] | Mexico [member]
Disclosure of geographical areas [line items]
Net sales	42,195	37,647	30,384
Operating segments [member] | Cement segment [member] | United States [member]
Disclosure of geographical areas [line items]
Net sales	27,804	28,585	23,358
Operating segments [member] | Cement segment [member] | United Kingdom [member]
Disclosure of geographical areas [line items]
Net sales	4,879	5,267	4,705
Operating segments [member] | Cement segment [member] | France [member]
Disclosure of geographical areas [line items]
Net sales	0	0	0
Operating segments [member] | Cement segment [member] | Germany [member]
Disclosure of geographical areas [line items]
Net sales	3,595	3,416	3,098
Operating segments [member] | Cement segment [member] | Spain [member]
Disclosure of geographical areas [line items]
Net sales	5,499	5,478	5,265
Operating segments [member] | Cement segment [member] | Poland [member]
Disclosure of geographical areas [line items]
Net sales	3,230	2,811	2,630
Operating segments [member] | Cement segment [member] | Rest of Europe [member]
Disclosure of geographical areas [line items]
Net sales	6,236	5,286	5,075
Operating segments [member] | Cement segment [member] | Colombia [member]
Disclosure of geographical areas [line items]
Net sales	7,043	8,814	8,158
Operating segments [member] | Cement segment [member] | Panama [member]
Disclosure of geographical areas [line items]
Net sales	3,876	3,794	3,368
Operating segments [member] | Cement segment [member] | Costa Rica [member]
Disclosure of geographical areas [line items]
Net sales	2,095	2,144	2,092
Operating segments [member] | Cement segment [member] | Rest of South, Central America and the Caribbean [member]
Disclosure of geographical areas [line items]
Net sales	11,412	10,998	9,633
Operating segments [member] | Cement segment [member] | Philippines [member]
Disclosure of geographical areas [line items]
Net sales	8,093	9,405	8,270
Operating segments [member] | Cement segment [member] | Egypt [member]
Disclosure of geographical areas [line items]
Net sales	3,347	6,076	6,052
Operating segments [member] | Cement segment [member] | Rest of Asia, Middle East and Africa [member]
Disclosure of geographical areas [line items]
Net sales	928	961	880
Operating segments [member] | Cement segment [member] | Other Locations [member]
Disclosure of geographical areas [line items]
Net sales	0	0	0
Operating segments [member] | Cement segment [member] | Caribbean TCL [member]
Disclosure of geographical areas [line items]
Net sales	4,097
Operating segments [member] | Concrete segment [member]
Disclosure of geographical areas [line items]
Net sales	100,853	97,709	86,701
Net sales, discontinued operations	525	1,366	3,877
Net sales, continuing and discontinued operations	101,378	99,075	90,578
Operating segments [member] | Concrete segment [member] | Mexico [member]
Disclosure of geographical areas [line items]
Net sales	14,672	13,664	13,163
Operating segments [member] | Concrete segment [member] | United States [member]
Disclosure of geographical areas [line items]
Net sales	35,400	35,843	30,129
Operating segments [member] | Concrete segment [member] | United Kingdom [member]
Disclosure of geographical areas [line items]
Net sales	7,459	7,830	7,729
Operating segments [member] | Concrete segment [member] | France [member]
Disclosure of geographical areas [line items]
Net sales	13,367	11,883	10,026
Operating segments [member] | Concrete segment [member] | Germany [member]
Disclosure of geographical areas [line items]
Net sales	4,668	4,539	3,749
Operating segments [member] | Concrete segment [member] | Spain [member]
Disclosure of geographical areas [line items]
Net sales	944	823	721
Operating segments [member] | Concrete segment [member] | Poland [member]
Disclosure of geographical areas [line items]
Net sales	2,532	2,237	1,916
Operating segments [member] | Concrete segment [member] | Rest of Europe [member]
Disclosure of geographical areas [line items]
Net sales	2,715	2,254	1,945
Operating segments [member] | Concrete segment [member] | Colombia [member]
Disclosure of geographical areas [line items]
Net sales	4,024	4,522	4,428
Operating segments [member] | Concrete segment [member] | Panama [member]
Disclosure of geographical areas [line items]
Net sales	1,725	1,577	1,424
Operating segments [member] | Concrete segment [member] | Costa Rica [member]
Disclosure of geographical areas [line items]
Net sales	386	390	367
Operating segments [member] | Concrete segment [member] | Rest of South, Central America and the Caribbean [member]
Disclosure of geographical areas [line items]
Net sales	1,308	1,526	2,058
Operating segments [member] | Concrete segment [member] | Philippines [member]
Disclosure of geographical areas [line items]
Net sales	67	143	115
Operating segments [member] | Concrete segment [member] | Egypt [member]
Disclosure of geographical areas [line items]
Net sales	479	943	975
Operating segments [member] | Concrete segment [member] | Rest of Asia, Middle East and Africa [member]
Disclosure of geographical areas [line items]
Net sales	11,078	9,535	7,956
Operating segments [member] | Concrete segment [member] | Other Locations [member]
Disclosure of geographical areas [line items]
Net sales	0	0	0
Operating segments [member] | Concrete segment [member] | Caribbean TCL [member]
Disclosure of geographical areas [line items]
Net sales	29
Operating segments [member] | Aggregates segment [member]
Disclosure of geographical areas [line items]
Net sales	41,267	40,341	34,244
Net sales, discontinued operations	340	785	1,928
Net sales, continuing and discontinued operations	41,607	41,126	36,172
Operating segments [member] | Aggregates segment [member] | Mexico [member]
Disclosure of geographical areas [line items]
Net sales	3,416	3,156	2,860
Operating segments [member] | Aggregates segment [member] | United States [member]
Disclosure of geographical areas [line items]
Net sales	14,436	14,565	11,914
Operating segments [member] | Aggregates segment [member] | United Kingdom [member]
Disclosure of geographical areas [line items]
Net sales	7,758	8,195	7,614
Operating segments [member] | Aggregates segment [member] | France [member]
Disclosure of geographical areas [line items]
Net sales	6,373	5,640	4,410
Operating segments [member] | Aggregates segment [member] | Germany [member]
Disclosure of geographical areas [line items]
Net sales	2,134	2,112	1,790
Operating segments [member] | Aggregates segment [member] | Spain [member]
Disclosure of geographical areas [line items]
Net sales	259	196	150
Operating segments [member] | Aggregates segment [member] | Poland [member]
Disclosure of geographical areas [line items]
Net sales	701	579	489
Operating segments [member] | Aggregates segment [member] | Rest of Europe [member]
Disclosure of geographical areas [line items]
Net sales	1,055	911	728
Operating segments [member] | Aggregates segment [member] | Colombia [member]
Disclosure of geographical areas [line items]
Net sales	1,224	1,364	1,329
Operating segments [member] | Aggregates segment [member] | Panama [member]
Disclosure of geographical areas [line items]
Net sales	452	413	383
Operating segments [member] | Aggregates segment [member] | Costa Rica [member]
Disclosure of geographical areas [line items]
Net sales	122	179	138
Operating segments [member] | Aggregates segment [member] | Rest of South, Central America and the Caribbean [member]
Disclosure of geographical areas [line items]
Net sales	268	322	376
Operating segments [member] | Aggregates segment [member] | Philippines [member]
Disclosure of geographical areas [line items]
Net sales	159	164	96
Operating segments [member] | Aggregates segment [member] | Egypt [member]
Disclosure of geographical areas [line items]
Net sales	16	26	36
Operating segments [member] | Aggregates segment [member] | Rest of Asia, Middle East and Africa [member]
Disclosure of geographical areas [line items]
Net sales	2,875	2,519	1,931
Operating segments [member] | Aggregates segment [member] | Other Locations [member]
Disclosure of geographical areas [line items]
Net sales	0	0	0
Operating segments [member] | Aggregates segment [member] | Caribbean TCL [member]
Disclosure of geographical areas [line items]
Net sales	19
Operating segments [member] | All other segments [member]
Disclosure of geographical areas [line items]
Net sales	57,087	53,179	49,588
Net sales, discontinued operations	687	6,665	5,474
Net sales, continuing and discontinued operations	57,774	59,844	55,062
Operating segments [member] | All other segments [member] | Mexico [member]
Disclosure of geographical areas [line items]
Net sales	11,211	11,773	9,956
Operating segments [member] | All other segments [member] | United States [member]
Disclosure of geographical areas [line items]
Net sales	6,235	7,107	7,994
Operating segments [member] | All other segments [member] | United Kingdom [member]
Disclosure of geographical areas [line items]
Net sales	8,067	7,889	7,859
Operating segments [member] | All other segments [member] | France [member]
Disclosure of geographical areas [line items]
Net sales	205	278	224
Operating segments [member] | All other segments [member] | Germany [member]
Disclosure of geographical areas [line items]
Net sales	2,335	2,262	2,103
Operating segments [member] | All other segments [member] | Spain [member]
Disclosure of geographical areas [line items]
Net sales	676	472	392
Operating segments [member] | All other segments [member] | Poland [member]
Disclosure of geographical areas [line items]
Net sales	226	219	197
Operating segments [member] | All other segments [member] | Rest of Europe [member]
Disclosure of geographical areas [line items]
Net sales	462	338	562
Operating segments [member] | All other segments [member] | Colombia [member]
Disclosure of geographical areas [line items]
Net sales	1,960	1,761	1,345
Operating segments [member] | All other segments [member] | Panama [member]
Disclosure of geographical areas [line items]
Net sales	180	139	172
Operating segments [member] | All other segments [member] | Costa Rica [member]
Disclosure of geographical areas [line items]
Net sales	120	126	109
Operating segments [member] | All other segments [member] | Rest of South, Central America and the Caribbean [member]
Disclosure of geographical areas [line items]
Net sales	307	298	451
Operating segments [member] | All other segments [member] | Philippines [member]
Disclosure of geographical areas [line items]
Net sales	52	70	62
Operating segments [member] | All other segments [member] | Egypt [member]
Disclosure of geographical areas [line items]
Net sales	173	217	236
Operating segments [member] | All other segments [member] | Rest of Asia, Middle East and Africa [member]
Disclosure of geographical areas [line items]
Net sales	2,148	1,379	1,115
Operating segments [member] | All other segments [member] | Other Locations [member]
Disclosure of geographical areas [line items]
Net sales	22,515	18,851	16,811
Operating segments [member] | All other segments [member] | Caribbean TCL [member]
Disclosure of geographical areas [line items]
Net sales	215
Elimination of intersegment amounts [member]
Disclosure of geographical areas [line items]
Net sales	(75,405)	(71,966)	(64,202)
Net sales, discontinued operations	(3)	(259)	(437)
Net sales, continuing and discontinued operations	(75,408)	(72,225)	(64,639)
Elimination of intersegment amounts [member] | Mexico [member]
Disclosure of geographical areas [line items]
Net sales	(14,127)	(13,509)	(11,751)
Elimination of intersegment amounts [member] | United States [member]
Disclosure of geographical areas [line items]
Net sales	(18,339)	(19,546)	(16,567)
Elimination of intersegment amounts [member] | United Kingdom [member]
Disclosure of geographical areas [line items]
Net sales	(7,984)	(8,028)	(7,680)
Elimination of intersegment amounts [member] | France [member]
Disclosure of geographical areas [line items]
Net sales	(3,783)	(3,266)	(2,596)
Elimination of intersegment amounts [member] | Germany [member]
Disclosure of geographical areas [line items]
Net sales	(4,015)	(4,142)	(3,731)
Elimination of intersegment amounts [member] | Spain [member]
Disclosure of geographical areas [line items]
Net sales	(1,498)	(1,247)	(1,132)
Elimination of intersegment amounts [member] | Poland [member]
Disclosure of geographical areas [line items]
Net sales	(1,211)	(1,135)	(895)
Elimination of intersegment amounts [member] | Rest of Europe [member]
Disclosure of geographical areas [line items]
Net sales	(1,893)	(1,395)	(1,513)
Elimination of intersegment amounts [member] | Colombia [member]
Disclosure of geographical areas [line items]
Net sales	(3,566)	(4,047)	(3,700)
Elimination of intersegment amounts [member] | Panama [member]
Disclosure of geographical areas [line items]
Net sales	(1,219)	(1,141)	(816)
Elimination of intersegment amounts [member] | Costa Rica [member]
Disclosure of geographical areas [line items]
Net sales	(297)	(372)	(277)
Elimination of intersegment amounts [member] | Rest of South, Central America and the Caribbean [member]
Disclosure of geographical areas [line items]
Net sales	(2,451)	(2,544)	(2,329)
Elimination of intersegment amounts [member] | Philippines [member]
Disclosure of geographical areas [line items]
Net sales	(75)	(127)	(111)
Elimination of intersegment amounts [member] | Egypt [member]
Disclosure of geographical areas [line items]
Net sales	(153)	(317)	(381)
Elimination of intersegment amounts [member] | Rest of Asia, Middle East and Africa [member]
Disclosure of geographical areas [line items]
Net sales	(3,513)	(2,548)	(1,953)
Elimination of intersegment amounts [member] | Other Locations [member]
Disclosure of geographical areas [line items]
Net sales	(11,204)	$ (8,602)	$ (8,770)
Elimination of intersegment amounts [member] | Caribbean TCL [member]
Disclosure of geographical areas [line items]
Net sales	$ (77)

Operating Expenses, Depreciat76

Operating Expenses, Depreciation and Amortization - Summary of Consolidated Operating Expense (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Analysis of income and expense [abstract]
Administrative expenses	$ 21,081	$ 20,750	$ 18,653
Selling expenses	6,450	6,974	5,883
Distribution and logistics expenses	28,495	26,245	23,374
Operating expenses	$ 56,026	$ 53,969	$ 47,910

Operating Expenses, Depreciat77

Operating Expenses, Depreciation and Amortization - Summary of Consolidated Operating Expense (Parenthetical) (Detail) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2015USD ($)	Dec. 31, 2015MXN ($)
Operating Expense [Line items]
Administrative expenses		$ 21,081		$ 20,750		$ 18,653
Technology and energy departments [member]
Operating Expense [Line items]
Administrative expenses	$ 38	$ 754	$ 38	$ 712	$ 41	$ 660

Operating Expenses, Depreciat78

Operating Expenses, Depreciation and Amortization - Summary of Depreciation and Amortization Recognized (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Depreciation and amortisation expense [abstract]
Depreciation and amortization expense included in cost of sales	$ 14,146	$ 14,180	$ 13,154
Depreciation and amortization expense included in administrative, selling and distribution and logistics expenses	1,846	1,811	1,504
Depreciation and amortization	$ 15,992	$ 15,991	$ 14,658

Other Expenses, Net - Summary o

Other Expenses, Net - Summary of Other Expenses (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Material income and expense [abstract]
Impairment losses and remeasurement of assets held for sale	$ (2,936)	$ (2,518)	$ (1,517)
Restructuring costs	(843)	(778)	(845)
Charitable contributions	(127)	(93)	(60)
Results from the sale of assets and others, net	91	1,719	(610)
Other expenses, net	$ (3,815)	$ (1,670)	$ (3,032)

Other Expenses, Net - Summary80

Other Expenses, Net - Summary of Other Expenses (Parenthetical) (Detail) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2015MXN ($)
Material income and expense [abstract]
Impairment losses of fixed assets		$ 984	$ 1,899	$ 1,145
Impairment losses of goodwill		1,920	$ 0	$ 0
Income tax penalty imposed	$ 25	$ 491

Financial Income and Other It81

Financial Income and Other Items, Net - Summary of Financial Income and Other Items (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Material income and expense [abstract]
Results in the sale of associates and remeasurement of previously held interest before change in control of associates (notes 4.1 and 13.1)	$ 4,164	$ 0	$ 0
Financial income	338	402	318
Results from financial instruments, net (notes 13.2 and 16.4)	161	113	(2,729)
Foreign exchange results	(26)	5,004	1,970
Effects of NPV on assets and liabilities and others, net	(1,021)	(1,030)	(892)
Other financial income (expense), net	$ 3,616	$ 4,489	$ (1,333)

Cash and Cash Equivalents - Sum

Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash and cash equivalents [abstract]
Cash and bank accounts	$ 9,292	$ 9,104
Fixed-income securities and other cash equivalents	4,449	2,512
Consolidated cash and cash equivalents	$ 13,741	$ 11,616	$ 15,322	$ 12,589

Cash and Cash Equivalents - Add

Cash and Cash Equivalents - Addition Information (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash and cash equivalents [abstract]
Deposits in margin accounts guarantees several obligations	$ 196	$ 250

Trade Accounts Receivable, Ne84

Trade Accounts Receivable, Net - Summary of Trade Accounts Receivable (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Trade and other receivables [abstract]
Trade accounts receivable	$ 32,623	$ 32,356
Allowances for doubtful accounts	(2,145)	(2,196)	$ (2,152)	$ (1,856)
Trade receivables	$ 30,478	$ 30,160

Trade Accounts Receivable, Ne85

Trade Accounts Receivable, Net - Additional Information (Detail) $ in Millions, $ in Millions	Dec. 31, 2017MXN ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2015MXN ($)	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016MXN ($)
Disclosure Of Trade Accounts Receivable [Line Items]
Receivables					$ 30,478		$ 30,160
Other financial obligations					19,362		11,658
Securitization programs [member]
Disclosure Of Trade Accounts Receivable [Line Items]
Receivables				$ 647	12,713	$ 658	13,644
Other financial obligations				$ 576	$ 11,313	$ 535	$ 11,095
Financial expense	$ 308	$ 258	$ 249

Trade Accounts Receivable, Ne86

Trade Accounts Receivable, Net - Summary of Changes in Valuation of Caption Allowance for Doubtful Accounts (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of financial assets [abstract]
Allowances for doubtful accounts at beginning of period	$ 2,196	$ 2,152	$ 1,856
Charged to selling expenses	252	556	434
Additions through business combinations	141	0	0
Deductions	(449)	(867)	(276)
Foreign currency translation effects	5	355	138
Allowances for doubtful accounts at end of period	$ 2,145	$ 2,196	$ 2,152

Other Accounts Receivable - Sum

Other Accounts Receivable - Summary of Consolidated Other Accounts Receivable (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Miscellaneous current assets [abstract]
Non-trade accounts receivable	$ 1,918	$ 2,527
Interest and notes receivable	1,125	1,286
Current portion of valuation of derivative financial instruments	1,056	236
Loans to employees and others	233	188
Refundable taxes	638	1,001
Other accounts receivable	$ 4,970	$ 5,238

Other Accounts Receivable - S88

Other Accounts Receivable - Summary of Consolidated Other Accounts Receivable (Parenthetical) (Detail) $ in Millions	Dec. 31, 2016MXN ($)
Miscellaneous current assets [abstract]
Short-term portion of interest receivable	$ 27

Inventories, Net - Summary of C

Inventories, Net - Summary of Consolidated Balance of Inventories (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Classes of current inventories [abstract]
Finished goods	$ 5,933	$ 5,865
Work-in-process	3,814	3,378
Raw materials	3,237	3,128
Materials and spare parts	4,996	4,551
Inventory in transit	872	1,176
Current inventories	$ 18,852	$ 18,098

Inventories, Net - Additional I

Inventories, Net - Additional Information (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Classes of current inventories [abstract]
Inventory impairment losses recognized within cost of sales	$ 23	$ 52	$ 49

Assets Held For Sale and Othe91

Assets Held For Sale and Other Current Assets - Summary of Assets and liabilities Held for Sale (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Asset held for sale and discontinued operations [Line Items]
Assets	$ 1,378	$ 21,029
Liabilities	0	815
Net assets	1,378	20,214
Concrete pipe division [member]
Asset held for sale and discontinued operations [Line Items]
Assets	0	9,426
Liabilities	0	642
Net assets	0	8,784
Fairborn cement plant [member]
Asset held for sale and discontinued operations [Line Items]
Assets	0	5,957
Liabilities	0	164
Net assets	0	5,793
Investment in GCC shares [member]
Asset held for sale and discontinued operations [Line Items]
Assets	0	3,882
Liabilities	0	0
Net assets	0	3,882
Idle assets in Andorra, Spain [member]
Asset held for sale and discontinued operations [Line Items]
Assets	580	560
Liabilities	0	0
Net assets	580	560
Concrete pumping equipment [member]
Asset held for sale and discontinued operations [Line Items]
Assets	0	213
Liabilities	0	0
Net assets	0	213
Other assets held for sale [member]
Asset held for sale and discontinued operations [Line Items]
Assets	798	991
Liabilities	0	9
Net assets	$ 798	$ 982

Assets Held For Sale and Othe92

Assets Held For Sale and Other Current Assets - Summary of Assets and liabilities Held for Sale (Parenthetical) (Detail)	Sep. 28, 2017	Dec. 31, 2017
GCC [member]
Asset held for sale and discontinued operations [Line Items]
Ownership percentage	9.47%	23.00%

Equity Accounted Investees, O93

Equity Accounted Investees, Other Investments and Non-Current Accounts Receivable - Summary of Main Investments in Common Shares of Associates (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of associates [line items]
Investments	$ 8,572	$ 10,488
Book value at acquisition date	6,957	8,275
Changes in stockholders' equity	$ 1,615	$ 2,213
Camcem [member]
Disclosure of associates [line items]
Name of associate	Camcem, S.A. de C.V.
Activity	Cement
Country	Mexico
Investment, percentage	40.10%	10.30%
Investments	$ 3,618	$ 3,674
Trinidad Cement Limited [member]
Disclosure of associates [line items]
Name of associate	Trinidad Cement Limited
Activity	Cement
Country	Trinidad and Tobago
Investment, percentage	39.50%	39.50%
Investments	$ 0	$ 1,689
Concrete Supply Co. LLC [member]
Disclosure of associates [line items]
Name of associate	Concrete Supply Co. LLC
Activity	Concrete
Country	United States
Investment, percentage	40.00%
Investments	$ 1,192	1,234
Akmenes Cementas AB [member]
Disclosure of associates [line items]
Name of associate	Akmenes Cementas AB
Activity	Cement
Country	Lithuania
Investment, percentage	37.80%
Investments	$ 585	586
ABC Capital, S.A. Institucion de Banca Multiple [member]
Disclosure of associates [line items]
Name of associate	ABC Capital, S.A. Institución de Banca Múltiple
Activity	Financing
Country	Mexico
Investment, percentage	33.90%
Investments	$ 228	474
Lehigh White Cement Company [member]
Disclosure of associates [line items]
Name of associate	Lehigh White Cement Company
Activity	Cement
Country	United States
Investment, percentage	24.50%
Investments	$ 375	334
Societe Meridionale de Carrieres [member]
Disclosure of associates [line items]
Name of associate	Société Méridionale de Carrières
Activity	Aggregates
Country	France
Investment, percentage	33.30%
Investments	$ 367	300
Societe d Exploitation de Carrieres [member]
Disclosure of associates [line items]
Name of associate	Société d'Exploitation de Carrières
Activity	Aggregates
Country	France
Investment, percentage	50.00%
Investments	$ 318	257
Cemento Interocenico Sa [member]
Disclosure of associates [line items]
Name of associate	Cemento Interoceánico S.A. (formerly Industrias Básicas, S.A.)
Activity	Cement
Country	Panama
Investment, percentage	25.00%
Investments	$ 168	155
Other companies [member]
Disclosure of associates [line items]
Name of associate	Other companies
Activity	-
Country	-
Investment, percentage	0.00%
Investments	$ 1,721	$ 1,785

Equity Accounted Investees, O94

Equity Accounted Investees, Other Investments and Non-Current Accounts Receivable - Additional Information (Detail)	Sep. 28, 2017MXN ($)shares	Jan. 25, 2017MXN ($)shares	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about financial instruments [line items]
Number of shares available for underwriters | shares		9,976,087
Bottom of range [member]
Disclosure of detailed information about financial instruments [line items]
Share price		$ 95
Top of range [member]
Disclosure of detailed information about financial instruments [line items]
Share price		115
Camcem [member]
Disclosure of detailed information about financial instruments [line items]
Ownership percentage			40.10%	10.30%
Camcem [member] | Disposal groups classified as held for sale [member]
Disclosure of detailed information about financial instruments [line items]
Ownership percentage	20.00%
Camsa [member]
Disclosure of detailed information about financial instruments [line items]
Ownership percentage				49.00%
GCC [member]
Disclosure of detailed information about financial instruments [line items]
Ownership percentage	9.47%		23.00%
Share price		95
Gain (loss) on sale of business	$ 1,682,000,000	$ 1,859,000,000
Number of shares sold | shares	31,483,332
Proceeds from sale	$ 3,012,000,000
GCC [member] | Private Placements Offering [Member]
Disclosure of detailed information about financial instruments [line items]
Ownership percentage		13.53%
Number of shares issued		76,483,332
Proceeds from sale of common stock		$ 4,094

Equity Accounted Investees, O95

Equity Accounted Investees, Other Investments and Non-Current Accounts Receivable - Summary of Combined Condensed Statement of Financial Position (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of associates [line items]
Current assets	$ 71,365	$ 88,441
Non-current assets	496,216	511,287
Total assets	567,581	599,728
Current liabilities	112,179	82,004
Non-current liabilities	244,984	320,999
Total liabilities	357,163	403,003
Total net assets	210,418	196,725
Associates [member]
Disclosure of associates [line items]
Current assets	21,527	21,651
Non-current assets	32,071	41,085
Total assets	53,598	62,736
Current liabilities	10,863	11,612
Non-current liabilities	17,730	22,436
Total liabilities	28,593	34,048
Total net assets	$ 25,005	$ 28,688

Equity Accounted Investees, O96

Equity Accounted Investees, Other Investments and Non-Current Accounts Receivable - Summary of Combined Selected Information of the Statements of Operations (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of associates [line items]
Sales	$ 258,131	$ 249,945	$ 219,299
Operating earnings	28,756	33,873	23,844
Income before income tax	13,659	17,563	3,464
Net income	16,638	15,206	2,124
Associates [member]
Disclosure of associates [line items]
Sales	28,158	29,791	25,484
Operating earnings	4,458	4,730	3,523
Income before income tax	2,451	3,111	3,350
Net income	$ 1,891	$ 1,860	$ 2,403

Equity Accounted Investees, O97

Equity Accounted Investees, Other Investments and Non-Current Accounts Receivable - Summary of Share of Profit of Equity Accounted Investees by Geographic Operating Segment (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of associates [line items]
Share of profit of equity accounted investees	$ 588	$ 688	$ 737
Mexico [member]
Disclosure of associates [line items]
Share of profit of equity accounted investees	269	452	330
United States [member]
Disclosure of associates [line items]
Share of profit of equity accounted investees	266	253	92
Europe [member]
Disclosure of associates [line items]
Share of profit of equity accounted investees	108	54	339
Corporate and others [member]
Disclosure of associates [line items]
Share of profit of equity accounted investees	$ (55)	$ (71)	$ (24)

Equity Accounted Investees, O98

Equity Accounted Investees, Other Investments and Non-Current Accounts Receivable - Summary of Other Investments and Non-current Accounts Receivable (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Miscellaneous non-current assets [abstract]
Non-current portion of valuation of derivative financial instruments	$ 794	$ 1,900
Non-current accounts receivable and other investments	4,612	4,572
Investments available-for-sale	275	491
Investments held for trading	77	157
Other investments and non-current accounts receivable	$ 5,758	$ 7,120

Equity Accounted Investees, O99

Equity Accounted Investees, Other Investments and Non-Current Accounts Receivable - Summary of Other Investments and Non-current Accounts Receivable (Parenthetical) (Detail) - MXN ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of subsidiaries [line items]
Advances to suppliers of fixed assets	$ 43,000,000	$ 52,000,000
Contributions to private funds	$ 0	0
Costa Rica [member]
Disclosure of subsidiaries [line items]
Non-current accounts receivable		$ 21,000,000
Egypt [member]
Disclosure of subsidiaries [line items]
Non-current accounts receivable			$ 71,000,000
Colombia [member]
Disclosure of subsidiaries [line items]
Non-current accounts receivable			$ 22,000,000

Property, Machinery and Equi100

Property, Machinery and Equipment, Net - Disclosure of Net Change in Property, Machinery and Equipment (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about property, plant and equipment [line items]
Net book value at beginning of period	$ 230,134	$ 216,694	$ 205,542
Capital expenditures	9,514	12,676	11,454
Additions through capital leases	2,096	7	63
Capitalization of financial expense		175	73
Stripping costs	809	421	723
Total capital expenditures	12,419	13,279	12,313
Disposals	(1,844)	(1,841)	(2,247)
Reclassifications	(1,634)	(4,549)	(3,099)
Business combinations	6,492	0	4,004
Depreciation and depletion for the period	(13,955)	(14,041)	(13,086)
Impairment losses	(984)	(1,899)	(1,145)
Foreign currency translation effects	1,532	22,491	14,412
Net book value at end of period	232,160	230,134	216,694
Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net book value at beginning of period	395,922	360,089	324,210
Net book value at end of period	411,515	395,922	360,089
Accumulated depreciation and depletion [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net book value at beginning of period	(165,788)	(143,395)	(118,668)
Net book value at end of period	(179,355)	(165,788)	(143,395)
Land and mineral reserves [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net book value at beginning of period	80,917	74,226
Capital expenditures	547	2,149
Additions through capital leases	0	0
Capitalization of financial expense		0
Stripping costs	809	421
Total capital expenditures	1,356	2,570
Disposals	(347)	(388)
Reclassifications	(784)	(2,029)
Business combinations	2,179	0
Depreciation and depletion for the period	(2,571)	(2,426)
Impairment losses	(202)	(671)
Foreign currency translation effects	(1,895)	9,635
Net book value at end of period	78,653	80,917	74,226
Land and mineral reserves [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net book value at beginning of period	97,218	86,441
Net book value at end of period	95,495	97,218	86,441
Land and mineral reserves [member] | Accumulated depreciation and depletion [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net book value at beginning of period	(16,301)	(12,215)
Net book value at end of period	(16,842)	(16,301)	(12,215)
Building [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net book value at beginning of period	27,516	27,335
Capital expenditures	802	1,856
Additions through capital leases	0	0
Capitalization of financial expense		0
Stripping costs	0	0
Total capital expenditures	802	1,856
Disposals	(223)	(141)
Reclassifications	(82)	(703)
Business combinations	749	0
Depreciation and depletion for the period	(1,967)	(2,033)
Impairment losses	(1)	(303)
Foreign currency translation effects	908	1,505
Net book value at end of period	27,702	27,516	27,335
Building [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net book value at beginning of period	51,740	48,563
Net book value at end of period	53,927	51,740	48,563
Building [member] | Accumulated depreciation and depletion [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net book value at beginning of period	(24,224)	(21,228)
Net book value at end of period	(26,225)	(24,224)	(21,228)
Machinery and equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net book value at beginning of period	104,454	101,280
Capital expenditures	8,165	8,671
Additions through capital leases	2,096	7
Capitalization of financial expense		0
Stripping costs	0	0
Total capital expenditures	10,261	8,678
Disposals	(1,274)	(1,268)
Reclassifications	(768)	(1,731)
Business combinations	3,136	0
Depreciation and depletion for the period	(9,417)	(9,582)
Impairment losses	(763)	(547)
Foreign currency translation effects	719	7,624
Net book value at end of period	106,348	104,454	101,280
Machinery and equipment [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net book value at beginning of period	229,717	211,232
Net book value at end of period	242,636	229,717	211,232
Machinery and equipment [member] | Accumulated depreciation and depletion [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net book value at beginning of period	(125,263)	(109,952)
Net book value at end of period	(136,288)	(125,263)	(109,952)
Construction in progress [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net book value at beginning of period	17,247	13,853
Capital expenditures	0	0
Additions through capital leases	0	0
Capitalization of financial expense		175
Stripping costs	0	0
Total capital expenditures	0	175
Disposals	0	(44)
Reclassifications	0	(86)
Business combinations	428	0
Depreciation and depletion for the period	0	0
Impairment losses	(18)	(378)
Foreign currency translation effects	1,800	3,727
Net book value at end of period	19,457	17,247	13,853
Construction in progress [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net book value at beginning of period	17,247	13,853
Net book value at end of period	19,457	17,247	13,853
Construction in progress [member] | Accumulated depreciation and depletion [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net book value at beginning of period	0	0
Net book value at end of period	$ 0	$ 0	$ 0

Property, Machinery and Equi101

Property, Machinery and Equipment, Net - Disclosure of Net Change in Property, Machinery and Equipment (Parenthetical) (Detail) T in Millions, $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)T	Dec. 31, 2017MXN ($)T	Dec. 31, 2016MXN ($)	Dec. 31, 2015MXN ($)	Dec. 31, 2017MXN ($)
Disclosure of detailed information about property, plant and equipment [line items]
Carrying amount of assets through leased back			$ 1,777		$ 1,690
Reclassifications		$ (1,634)	(4,549)	$ (3,099)
Colombia [member]
Disclosure of detailed information about property, plant and equipment [line items]
Annual production capacity | T	1.1	1.1
Reduction in investment	$ 23	$ 483
Impairment loss recognized in other expenses, net	14	295
Other accounts payable	9				188
Investment in plant	340
Mexico [member]
Disclosure of detailed information about property, plant and equipment [line items]
Sale of fixed assets		343	281
United States [member]
Disclosure of detailed information about property, plant and equipment [line items]
Sale of fixed assets		223	317	451
Assets available for sale			1,386	537
Spain [member]
Disclosure of detailed information about property, plant and equipment [line items]
Sale of fixed assets		220		417
France [member]
Disclosure of detailed information about property, plant and equipment [line items]
Sale of fixed assets			165
United Kingdom [member]
Disclosure of detailed information about property, plant and equipment [line items]
Sale of fixed assets				584
Pacific Northwest Materials Business [member] | United States [member]
Disclosure of detailed information about property, plant and equipment [line items]
Reclassifications		1,634
Concrete Pipe Business Segment [member] | United States [member]
Disclosure of detailed information about property, plant and equipment [line items]
Reclassifications			2,747
Construction in progress [member]
Disclosure of detailed information about property, plant and equipment [line items]
Reclassifications		0	(86)
Construction in progress [member] | Colombia [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net book value of adjustment in investment property	$ 333	$ 6,543
Mobile equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Carrying amount of assets acquired through capital lease			$ 7	$ 63	$ 2,096

Property, Machinery and Equi102

Property, Machinery and Equipment, Net - Summary of Recognized Impairment Losses (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of impairment loss and reversal of impairment loss [line items]
Impairment losses	$ 984	$ 1,899	$ 1,145
Spain [member]
Disclosure of impairment loss and reversal of impairment loss [line items]
Impairment losses	452	0	392
Czech Republic [member]
Disclosure of impairment loss and reversal of impairment loss [line items]
Impairment losses	157	0	0
United States [member]
Disclosure of impairment loss and reversal of impairment loss [line items]
Impairment losses	153	277	269
Panama [member]
Disclosure of impairment loss and reversal of impairment loss [line items]
Impairment losses	56	0	118
France [member]
Disclosure of impairment loss and reversal of impairment loss [line items]
Impairment losses	50	0	0
Latvia [member]
Disclosure of impairment loss and reversal of impairment loss [line items]
Impairment losses	46	0	126
Mexico [member]
Disclosure of impairment loss and reversal of impairment loss [line items]
Impairment losses	45	46	46
Puerto Rico [member]
Disclosure of impairment loss and reversal of impairment loss [line items]
Impairment losses	0	1,087	172
Colombia [member]
Disclosure of impairment loss and reversal of impairment loss [line items]
Impairment losses	0	454	0
Other countries [member]
Disclosure of impairment loss and reversal of impairment loss [line items]
Impairment losses	$ 25	$ 35	$ 22

Goodwill and Intangible Asse103

Goodwill and Intangible Assets, Net - Summary of Consolidated Goodwill, Intangible Assets and Deferred Charges (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	$ 234,909	$ 247,507
Goodwill [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	195,474	206,319
Extraction rights [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	33,123	35,047
Industrial property and trademarks [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	565	357
Customer relationships [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	7	259
Mining projects [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	701	877
Others intangible assets [Member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	5,039	4,648
Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	255,603	267,139
Cost [member] | Goodwill [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	195,474	206,319
Cost [member] | Extraction rights [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	39,603	40,995
Cost [member] | Industrial property and trademarks [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	929	707
Cost [member] | Customer relationships [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	3,859	4,343
Cost [member] | Mining projects [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	797	961
Cost [member] | Others intangible assets [Member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	14,941	13,814
Accumulated Depreciation, amortization and Impairment [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	(20,694)	(19,632)
Accumulated Depreciation, amortization and Impairment [member] | Goodwill [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	0	0
Accumulated Depreciation, amortization and Impairment [member] | Extraction rights [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	(6,480)	(5,948)
Accumulated Depreciation, amortization and Impairment [member] | Industrial property and trademarks [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	(364)	(350)
Accumulated Depreciation, amortization and Impairment [member] | Customer relationships [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	(3,852)	(4,084)
Accumulated Depreciation, amortization and Impairment [member] | Mining projects [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	(96)	(84)
Accumulated Depreciation, amortization and Impairment [member] | Others intangible assets [Member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	$ (9,902)	$ (9,166)

Goodwill and Intangible Asse104

Goodwill and Intangible Assets, Net - Additional Information (Detail) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2015MXN ($)
Disclosure of detailed information about intangible assets [line items]
Amortization of intangible assets of definite useful life recognized within operating costs and expenses		$ 2,037	$ 1,950	$ 1,572
Amount of net book value in excess of net present value of projected cash flows	$ 98	$ 1,920
Decrease in funding cost percentage	6.10%	6.10%	6.20%	6.90%
Decrease increase in risk free rate	2.76%	2.76%	2.70%	3.20%
Risk associated with goodwill	1.26	1.26	1.29
Increase in pre-tax discount rate	1.00%	1.00%
Decrease in long-term growth rate	1.00%	1.00%
Weighted average Operating EBITDA multiple	9	9	9	9
Operating EBITDA multiple	8.5	8.5	8.9	8.7
Lowest multiple	6.5	6.5	5.9	5.8
Highest multiple	18.9	18.9	18.3	18
Top of range [member]
Disclosure of detailed information about intangible assets [line items]
Cash flow projection period	10 years	10 years
Bottom of range [member]
Disclosure of detailed information about intangible assets [line items]
Cash flow projection period	5 years	5 years
United States [member]
Disclosure of detailed information about intangible assets [line items]
Percentage of goodwill allocated	78.00%	78.00%	79.00%
Percentage of increases in ready-mix concrete volumes			1.00%	13.00%
Percentage of increases in ready-mix concrete prices	1.00%	1.00%	1.00%	5.00%
Percentage of decreases in ready-mix concrete volumes	1.00%	1.00%

Goodwill and Intangible Asse105

Goodwill and Intangible Assets, Net - Summary of Changes in Consolidated goodwill (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of reconciliation of changes in goodwill [abstract]
Balance at beginning of period	$ 206,319	$ 184,156	$ 160,544
Business combinations	1,965	0	64
Disposals, net (note 4.3)	0	(3,340)	(552)
Reclassification to assets held for sale and other current assets (notes 4.2, 4.3 and 12)	(1,804)	(9,734)	0
Impairment losses	(1,920)	0	0
Foreign currency translation effects	(9,086)	35,237	24,100
Balance at end of period	$ 195,474	$ 206,319	$ 184,156

Goodwill and Intangible Asse106

Goodwill and Intangible Assets, Net - Summary of Changes in intangible Asset (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about intangible assets [line items]
Balance at beginning of period	$ 41,188	$ 36,566	$ 32,940
Additions (disposals), net	(229)	(598)	(186)
Business combinations	76	0	616
Reclassifications (notes 4.1, 4.2 and 12)	(27)	0	1
Amortization for the period	(2,037)	(1,950)	(1,572)
Impairment losses	(50)	(25)	(10)
Foreign currency translation effects	514	7,195	4,777
Balance at the end of period	39,435	41,188	36,566
Extraction rights [member]
Disclosure of detailed information about intangible assets [line items]
Balance at beginning of period	35,047	30,327
Additions (disposals), net	278	201
Business combinations	0	0
Reclassifications (notes 4.1, 4.2 and 12)	0	0
Amortization for the period	(716)	(712)
Impairment losses	(38)	(6)
Foreign currency translation effects	(1,448)	5,237
Balance at the end of period	33,123	35,047	30,327
Industrial property and trademarks [member]
Disclosure of detailed information about intangible assets [line items]
Balance at beginning of period	357	622
Additions (disposals), net	(783)	(760)
Business combinations	0	0
Reclassifications (notes 4.1, 4.2 and 12)	0	0
Amortization for the period	(110)	(293)
Impairment losses	0	0
Foreign currency translation effects	1,101	788
Balance at the end of period	565	357	622
Customer relationships [member]
Disclosure of detailed information about intangible assets [line items]
Balance at beginning of period	259	1,004
Additions (disposals), net	0	0
Business combinations	0	0
Reclassifications (notes 4.1, 4.2 and 12)	(27)	0
Amortization for the period	(225)	(658)
Impairment losses	0	0
Foreign currency translation effects	0	(87)
Balance at the end of period	7	259	1,004
Mining projects [member]
Disclosure of detailed information about intangible assets [line items]
Balance at beginning of period	877	805
Additions (disposals), net	(148)	(382)
Business combinations	4	0
Reclassifications (notes 4.1, 4.2 and 12)	0	0
Amortization for the period	(12)	(12)
Impairment losses	0	0
Foreign currency translation effects	(20)	466
Balance at the end of period	701	877	805
Others intangible assets [Member]
Disclosure of detailed information about intangible assets [line items]
Balance at beginning of period	4,648	3,808
Additions (disposals), net	424	343
Business combinations	72	0
Reclassifications (notes 4.1, 4.2 and 12)	0	0
Amortization for the period	(974)	(275)
Impairment losses	(12)	(19)
Foreign currency translation effects	881	791
Balance at the end of period	$ 5,039	$ 4,648	$ 3,808

Goodwill and Intangible Asse107

Goodwill and Intangible Assets, Net - Summary of Changes in intangible Asset (Parenthetical) (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about intangible assets [line items]
Carrying amount of internal-use software	$ 2,981	$ 2,544
Computer software [member]
Disclosure of detailed information about intangible assets [line items]
Capitalized direct costs	$ 1,422	$ 769	$ 615

Goodwill and Intangible Asse108

Goodwill and Intangible Assets, Net - Summary of Goodwill Balances Allocated by Operating Segment (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	$ 195,474	$ 206,319	$ 184,156	$ 160,544
Mexico [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	7,371	7,529
United States [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	152,486	162,692
Spain [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	10,000	12,316
United Kingdom [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	6,335	6,371
France [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	4,796	4,524
Czech Republic [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	709	583
Colombia [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	6,146	6,461
Dominican Republic [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	279	250
Trinidad Cement Limited [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	2,027	0
Caribbean Argentina Costa Rica And Panama [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	985	1,036
Philippines [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	1,817	1,911
United Arab Emirates [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	1,769	1,865
Egypt [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	232	231
Other countries [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	$ 522	$ 550

Goodwill and Intangible Asse109

Goodwill and Intangible Assets, Net - Summary of Pre-tax Discount Rates and Long-term Growth Rates Used to Determine the Discounted Cash Flows (Detail)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
United States [member]
Disclosure of information for cash-generating units [line items]
Discount rates	8.80%	8.60%	8.60%
Growth rates	2.50%	2.50%	2.50%
Spain [member]
Disclosure of information for cash-generating units [line items]
Discount rates	9.50%	9.50%	9.90%
Growth rates	1.70%	1.60%	1.90%
Mexico [member]
Disclosure of information for cash-generating units [line items]
Discount rates	10.20%	9.80%	9.60%
Growth rates	2.70%	2.90%	3.50%
Colombia [member]
Disclosure of information for cash-generating units [line items]
Discount rates	10.50%	10.00%	9.80%
Growth rates	3.70%	4.00%	4.00%
France [member]
Disclosure of information for cash-generating units [line items]
Discount rates	9.00%	9.10%	9.00%
Growth rates	1.80%	1.80%	1.60%
United Arab Emirates [member]
Disclosure of information for cash-generating units [line items]
Discount rates	10.40%	10.20%	10.20%
Growth rates	3.10%	3.40%	3.60%
United Kingdom [member]
Disclosure of information for cash-generating units [line items]
Discount rates	9.00%	8.80%	8.80%
Growth rates	1.70%	1.90%	2.30%
Egypt [member]
Disclosure of information for cash-generating units [line items]
Discount rates	11.80%	11.40%	12.50%
Growth rates	6.00%	6.00%	4.60%
Bottom of range [member] | Other countries [member]
Disclosure of information for cash-generating units [line items]
Discount rates	9.10%	9.10%	9.00%
Growth rates	2.30%	2.20%	2.40%
Top of range [member] | Other countries [member]
Disclosure of information for cash-generating units [line items]
Discount rates	11.70%	12.80%	13.80%
Growth rates	6.80%	7.00%	4.30%

Financial Instruments - Summary

Financial Instruments - Summary of Debt Summarized by Interest Rates and Currencies (Detail) $ in Millions, $ in Millions	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2015MXN ($)	Dec. 31, 2014MXN ($)
Disclosure of detailed information about financial instruments [line items]
Short- term		$ 16,973		$ 1,222
Long- term	$ 9,892	177,022	$ 11,379	235,016
Total		193,995		236,238	$ 229,343	$ 205,834
Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Short- term		7,282		519
Long- term		53,389		64,550
Total		$ 60,671		$ 65,069
Short-term	6.10%	6.10%	9.70%	9.70%
Long-term	3.00%	3.00%	4.40%	4.40%
Fixed interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Short- term		$ 9,691		$ 703
Long- term		123,633		170,466
Total		$ 133,324		$ 171,169
Short-term	4.80%	4.80%	4.40%	4.40%
Long-term	5.70%	5.70%	6.50%	6.50%
US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Short- term		$ 6,206		$ 114
Long- term		107,508		179,675
Total		$ 113,714		$ 179,789
Effective rate	5.90%	5.90%	6.30%	6.30%
Euro [member]
Disclosure of detailed information about financial instruments [line items]
Short- term		$ 9,705		$ 50
Long- term		54,906		55,292
Total		$ 64,611		$ 55,342
Effective rate	3.50%	3.50%	4.30%	4.30%
Pounds [member]
Disclosure of detailed information about financial instruments [line items]
Short- term		$ 0		$ 0
Long- term		9,141		0
Total		$ 9,141		$ 0
Effective rate	2.60%	2.60%	0.00%	0.00%
Philippine pesos [member]
Disclosure of detailed information about financial instruments [line items]
Short- term		$ 0		$ 0
Long- term		5,408		0
Total		$ 5,408		$ 0
Effective rate	4.60%	4.60%	0.00%	0.00%
Pesos [Member]
Disclosure of detailed information about financial instruments [line items]
Short- term		$ 0		$ 648
Long- term		0		0
Total		$ 0		$ 648
Effective rate	0.00%	0.00%	4.40%	4.40%
Other Currencies [Member]
Disclosure of detailed information about financial instruments [line items]
Short- term		$ 1,062		$ 410
Long- term		59		49
Total		$ 1,121		$ 459
Effective rate	6.20%	6.20%	10.20%	10.20%

Financial Instruments - Summ111

Financial Instruments - Summary of Consolidated Debt by Type of Instrument (Detail) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016MXN ($)
Disclosure of detailed information about financial instruments [line items]
Short- term			$ 16,973	$ 1,222
Long- term	$ 9,892	$ 11,379	177,022	235,016
Less than 1 year [Member]
Disclosure of detailed information about financial instruments [line items]
Short- term			15,685	752
Long- term	$ 798		(15,685)	(752)
Bank loans [member]
Disclosure of detailed information about financial instruments [line items]
Short- term			910	297
Long- term			55,571	58,122
Bank loans [member] | Loans in Foreign Countries [member]
Disclosure of detailed information about financial instruments [line items]
Short- term			910	261
Long- term			5,439	1,090
Bank loans [member] | Syndicated loans [member]
Disclosure of detailed information about financial instruments [line items]
Short- term			0	36
Long- term			50,132	57,032
Notes payable [member]
Disclosure of detailed information about financial instruments [line items]
Short- term			378	173
Long- term			137,136	177,646
Notes payable [member] | Notes payable in Mexico [member]
Disclosure of detailed information about financial instruments [line items]
Short- term			0	0
Long- term			0	648
Debt instrument maturity period	2,018
Notes payable [member] | Medium term notes [member]
Disclosure of detailed information about financial instruments [line items]
Short- term			224	0
Long- term			133,949	173,656
Notes payable [member] | Other Notes Payable [member]
Disclosure of detailed information about financial instruments [line items]
Short- term			154	173
Long- term			3,187	3,342
Total bank loans and notes payables [member]
Disclosure of detailed information about financial instruments [line items]
Short- term			1,288	470
Long- term			$ 192,707	$ 235,768
Bottom of range [member] | Bank loans [member] | Loans in Foreign Countries [member]
Disclosure of detailed information about financial instruments [line items]
Debt instrument maturity period	2,018	2,017
Bottom of range [member] | Bank loans [member] | Syndicated loans [member]
Disclosure of detailed information about financial instruments [line items]
Debt instrument maturity period	2,018	2,017
Bottom of range [member] | Notes payable [member] | Medium term notes [member]
Disclosure of detailed information about financial instruments [line items]
Debt instrument maturity period	2,018	2,017
Bottom of range [member] | Notes payable [member] | Other Notes Payable [member]
Disclosure of detailed information about financial instruments [line items]
Debt instrument maturity period	2,018	2,017
Top of range [member] | Bank loans [member] | Loans in Foreign Countries [member]
Disclosure of detailed information about financial instruments [line items]
Debt instrument maturity period	2,022	2,022
Top of range [member] | Bank loans [member] | Syndicated loans [member]
Disclosure of detailed information about financial instruments [line items]
Debt instrument maturity period	2,022	2,020
Top of range [member] | Notes payable [member] | Notes payable in Mexico [member]
Disclosure of detailed information about financial instruments [line items]
Debt instrument maturity period		2,017
Top of range [member] | Notes payable [member] | Medium term notes [member]
Disclosure of detailed information about financial instruments [line items]
Debt instrument maturity period	2,026	2,026
Top of range [member] | Notes payable [member] | Other Notes Payable [member]
Disclosure of detailed information about financial instruments [line items]
Debt instrument maturity period	2,025	2,025

Financial Instruments - Additio

Financial Instruments - Additional Information - Short-Term and Long-Term Debt (Detail) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2015USD ($)	Dec. 31, 2015MXN ($)	Dec. 31, 2017MXN ($)	Jul. 19, 2017USD ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2015MXN ($)	Dec. 31, 2014MXN ($)	Sep. 29, 2014USD ($)
Disclosure of detailed information about financial instruments [line items]
Issuance of outstanding notes payables	$ 84		$ 84
Percentage of bank loans on total indebtedness	29.00%		25.00%				29.00%		25.00%
Bank indebtedness					$ 3,062		$ 56,879		$ 52,763
Change in amount of bank loan, Diversification effect							$ 193,995		$ 236,238	$ 229,343	$ 205,834
Percentage of notes payable on total indebtedness	71.00%		75.00%				71.00%		75.00%
Premiums, fees and issuance costs paid	$ 251	$ 4,930	$ 196	$ 4,061	61	$ 1,047
Issuance costs recognized	212	4,160	151	3,129	35	604
Issuance costs of new debt	39	770	45	932	26	443
Proportional fees and issuance costs related to the extinguished debt instruments	16	$ 310	$ 37	$ 767	$ 31	$ 541
2017 Credit Agreement [member]
Disclosure of detailed information about financial instruments [line items]
Bank indebtedness	4,050							$ 4,050
2014 Credit Agreement [member]
Disclosure of detailed information about financial instruments [line items]
Bank indebtedness	3,680											$ 3,680
Risk diversification effect [member]
Disclosure of detailed information about financial instruments [line items]
Change in amount of bank loan, Diversification effect	$ 280

Financial Instruments - Summ113

Financial Instruments - Summary of Changes in Consolidated Debt (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about financial instruments [abstract]
Debt at beginning of year	$ 236,238	$ 229,343	$ 205,834
Proceeds from new debt instruments	93,620	48,748	52,764
Debt repayments	(128,411)	(85,798)	(64,237)
Foreign currency translation and inflation effects	(7,452)	43,945	34,982
Debt at end of year	$ 193,995	$ 236,238	$ 229,343

Financial Instruments - Summ114

Financial Instruments - Summary of Long Term Notes Payable (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 10, 2017USD ($)	Sep. 25, 2017USD ($)	Feb. 28, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016MXN ($)
Disclosure of detailed information about financial instruments [line items]
Long term borrowings	$ 9,892,000,000	$ 177,022				$ 11,379,000,000	$ 235,016
CEMEX Finance LLC October 2022 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Principal amount				$ 701,000,000		739,000,000
CEMEX, S.A.B. de C.V. January 2021 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Principal amount					$ 385,000,000	242,000,000
CEMEX, S.A.B. de C.V. December 2019 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Principal amount			$ 611,000,000		$ 90,000,000	219,000,000
CEMEX, S.A.B. de C.V. October 2018 Variable Notes [member]
Disclosure of detailed information about financial instruments [line items]
Principal amount						$ 178,000,000
Notes payable [member]
Disclosure of detailed information about financial instruments [line items]
Long term borrowings		137,136					177,646
Notes payable [member] | Other Notes Payable [member]
Disclosure of detailed information about financial instruments [line items]
Long term borrowings		125					93
Notes payable [member] | CEMEX, S.A.B. de C.V. January 2025 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Date of issuance	Sep. 11, 2014
Issuer	CEMEX, S.A.B. de C.V.
Currency	Dollar
Principal amount		$ 1,100
Rate	5.70%	5.70%
Maturity date	Jan. 11, 2025
Repurchased amount	$ (29,000,000)
Long term borrowings	$ 1,071,000,000	$ 20,988					22,124
Notes payable [member] | CEMEX, S.A.B. de C.V. April 2026 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Date of issuance	Mar. 16, 2016
Issuer	CEMEX, S.A.B. de C.V.
Currency	Dollar
Principal amount		$ 1,000
Rate	7.75%	7.75%
Maturity date	Apr. 16, 2026
Repurchased amount	$ 0
Long term borrowings	$ 1,000,000,000	$ 19,568					20,631
Notes payable [member] | CEMEX Materials, LLC July 2025 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Date of issuance	Apr. 2, 2003
Issuer	CEMEX Materials LLC
Currency	Dollar
Principal amount		$ 150
Rate	7.70%	7.70%
Maturity date	Jul. 21, 2025
Repurchased amount	$ 0
Long term borrowings	$ 150,000,000	$ 3,061					3,249
Notes payable [member] | CEMEX, S.A.B. de C.V. March 2025 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Date of issuance	Mar. 3, 2015
Issuer	CEMEX, S.A.B. de C.V.
Currency	Dollar
Principal amount		$ 750
Rate	6.125%	6.125%
Maturity date	May 5, 2025
Repurchased amount	$ 0
Long term borrowings	$ 750,000,000	$ 14,691					15,488
Notes payable [member] | CEMEX, SAB. de CV. December 2024 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Date of issuance	Dec. 5, 2017
Issuer	CEMEX, S.A.B. de C.V.
Currency	Euro
Principal amount		$ 650
Rate	2.75%	2.75%
Maturity date	Dec. 5, 2024
Repurchased amount	$ 0
Long term borrowings	$ 780,000,000	$ 15,257					0
Notes payable [member] | CEMEX Finance LLC June 2024 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Date of issuance	Jun. 14, 2016
Issuer	CEMEX Finance LLC
Currency	Euro
Principal amount		$ 400
Rate	4.625%	4.625%
Maturity date	Jun. 15, 2024
Repurchased amount	$ 0
Long term borrowings	$ 480,000,000	$ 9,390					8,665
Notes payable [member] | CEMEX Finance LLC April 2024 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Date of issuance	Apr. 1, 2014
Issuer	CEMEX Finance LLC
Currency	Dollar
Principal amount		$ 1,000
Rate	6.00%	6.00%
Maturity date	Apr. 1, 2024
Repurchased amount	$ (10,000,000)
Long term borrowings	$ 990,000,000	$ 18,924					19,886
Notes payable [member] | CEMEX, S.A.B. de C.V. March 2023 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Date of issuance	Mar. 3, 2015
Issuer	CEMEX, S.A.B. de C.V.
Currency	Euro
Principal amount		$ 550
Rate	4.375%	4.375%
Maturity date	Mar. 5, 2023
Repurchased amount	$ 0
Long term borrowings	$ 660,000,000	$ 12,938					11,948
Notes payable [member] | CEMEX Finance LLC October 2022 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Date of issuance	Oct. 12, 2012
Issuer	CEMEX Finance LLC
Currency	Dollar
Principal amount		$ 1,500
Rate	9.375%	9.375%
Maturity date	Oct. 12, 2022
Repurchased amount	$ (1,500,000,000)
Long term borrowings	$ 0	$ 0					21,738
Notes payable [member] | CEMEX, S.A.B. de C.V. January 2022 [member]
Disclosure of detailed information about financial instruments [line items]
Date of issuance	Sep. 11, 2014
Issuer	CEMEX, S.A.B. de C.V.
Currency	Euro
Principal amount		$ 400
Rate	4.75%	4.75%
Maturity date	Jan. 22, 2022
Repurchased amount	$ 0
Long term borrowings	$ 480,000,000	$ 9,434					8,696
Notes payable [member] | CEMEX Finance LLC April 2021 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Date of issuance	Apr. 1, 2014
Issuer	CEMEX Finance LLC
Currency	Euro
Principal amount		$ 400
Rate	5.25%	5.25%
Maturity date	Apr. 1, 2021
Repurchased amount	$ (447,000,000)
Long term borrowings	$ 0	$ 0					8,679
Notes payable [member] | CEMEX, S.A.B. de C.V. January 2021 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Date of issuance	Oct. 2, 2013
Issuer	CEMEX, S.A.B. de C.V.
Currency	Dollar
Principal amount		$ 1,000
Rate	7.25%	7.25%
Maturity date	Jan. 15, 2021
Repurchased amount	$ (659,000,000)
Long term borrowings	$ 341,000,000	$ 6,606					14,845
Notes payable [member] | CEMEX, S.A.B. de C.V. December 2019 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Date of issuance	Aug. 12, 2013
Issuer	CEMEX, S.A.B. de C.V.
Currency	Dollar
Principal amount		$ 1,000
Rate	6.50%	6.50%
Maturity date	Dec. 10, 2019
Repurchased amount	$ (1,000,000,000)
Long term borrowings	$ 0	$ 0					14,471
Notes payable [member] | CEMEX, S.A.B. de C.V. October 2018 Variable Notes [member]
Disclosure of detailed information about financial instruments [line items]
Date of issuance	Oct. 2, 2013
Issuer	CEMEX, S.A.B. de C.V.
Currency	Dollar
Principal amount		500
Maturity date	Oct. 15, 2018
Repurchased amount	$ (187,000,000)
Long term borrowings	$ 313,000,000	6,154					6,485
Notes payable [member] | CEMEX, S.A.B. de C.V. November 2017 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Date of issuance	Nov. 30, 2007
Issuer	CEMEX, S.A.B. de C.V.
Currency	Peso
Principal amount		$ 627
Rate	4.40%	4.40%
Maturity date	Nov. 17, 2017
Repurchased amount	$ (37,000,000)
Long term borrowings	$ 0	$ 0					$ 648

Financial Instruments - Summ115

Financial Instruments - Summary of Long Term Notes Payable (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2017EUR (€)	Dec. 10, 2017USD ($)	Nov. 28, 2017USD ($)	Nov. 28, 2017MXN ($)	Nov. 28, 2017EUR (€)	Oct. 12, 2017USD ($)	Sep. 25, 2017USD ($)	May 31, 2017EUR (€)	Feb. 28, 2017USD ($)	Dec. 31, 2016USD ($)
Disclosure of detailed information about financial instruments [line items]
3-Month LIBOR rate	1.6943%									0.9979%
CEMEX, SAB. de CV. December 2024 Notes [member] | 2.75% Senior secured notes [member]
Disclosure of detailed information about financial instruments [line items]
Issue price | €	€ 650,000,000
CEMEX Finance LLC October 2022 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Purchase of principal amount of borrowings							$ 701,000,000			$ 739,000,000
CEMEX, S.A.B. de C.V. January 2021 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Purchase of principal amount of borrowings									$ 385,000,000	242,000,000
CEMEX, S.A.B. de C.V. December 2019 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Purchase of principal amount of borrowings		$ 611,000,000							$ 90,000,000	219,000,000
CEMEX, S.A.B. de C.V. October 2018 Variable Notes [member]
Disclosure of detailed information about financial instruments [line items]
Purchase of principal amount of borrowings										$ 178,000,000
Notes redeemed october two thousand twenty two [member]
Disclosure of detailed information about financial instruments [line items]
Purchase of principal amount of borrowings						$ 343,000,000
Euro [member] | CEMEX, S.A.B. de C.V. January 2022 [member]
Disclosure of detailed information about financial instruments [line items]
Purchase of principal amount of borrowings | €					€ 400,000,000
Euro [member] | CEMEX Finance LLC April 2021 Notes [member]
Disclosure of detailed information about financial instruments [line items]
Purchase of principal amount of borrowings | €								€ 400,000,000
US Dollar [member] | CEMEX, S.A.B. de C.V. January 2022 [member]
Disclosure of detailed information about financial instruments [line items]
Purchase of principal amount of borrowings			$ 480,000,000
Pesos [Member] | CEMEX, S.A.B. de C.V. January 2022 [member]
Disclosure of detailed information about financial instruments [line items]
Purchase of principal amount of borrowings				$ 9,432,000,000

Financial Instruments - Schedul

Financial Instruments - Schedule of Consolidated Long-Term Debt (Detail) $ in Millions, $ in Millions	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016MXN ($)
Disclosure of detailed information about financial instruments [line items]
Long term borrowings	$ 9,892	$ 177,022	$ 11,379	$ 235,016
Later Than One Year and Not Later Than Two Years [Member]
Disclosure of detailed information about financial instruments [line items]
Long term borrowings		30
Later Than Two Years and Not Later Than Three Years [Member]
Disclosure of detailed information about financial instruments [line items]
Long term borrowings		10,175
Later Than Three Years and Not Later Than Four Years [Member]
Disclosure of detailed information about financial instruments [line items]
Long term borrowings		26,948
Later Than Four Years and Not Later Than Five Years [Member]
Disclosure of detailed information about financial instruments [line items]
Long term borrowings		19,594
More than 5 Years [Member]
Disclosure of detailed information about financial instruments [line items]
Long term borrowings	$ 6,164	$ 120,275

Financial Instruments - Addi117

Financial Instruments - Additional Information - Credit Agreement, Facilities Agreement and Financing Agreement (Detail) € in Millions, £ in Millions, $ in Millions, $ in Millions	Sep. 17, 2012USD ($)	Nov. 30, 2016USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2017EUR (€)	Dec. 31, 2017GBP (£)	Jul. 19, 2017USD ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2016EUR (€)	Nov. 30, 2016MXN ($)	Jul. 30, 2015USD ($)	Jul. 30, 2015MXN ($)	Sep. 29, 2014USD ($)
Disclosure of detailed information about financial instruments [line items]
Bank indebtedness					$ 3,062	$ 56,879				$ 52,763
Maturity period			4 years 3 months 19 days
Maximum capital expenditure			$ 1,000	$ 1,000
Acquisitions and investments in joint ventures			$ 400	$ 400
Leverage ratio			3.85	4.22	5.21
CEMEX Holdings Philippines, Inc. [member]
Disclosure of detailed information about financial instruments [line items]
Maximum capital expenditure			$ 500	$ 500
CEMEX Latam Holdings, S.A [member]
Disclosure of detailed information about financial instruments [line items]
Maximum capital expenditure			$ 500	$ 500
Euro [member]
Disclosure of detailed information about financial instruments [line items]
Interest rate			3.50%	4.30%		3.50%	3.50%	3.50%		4.30%	4.30%
US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Interest rate			5.90%	6.30%		5.90%	5.90%	5.90%		6.30%	6.30%
Pesos [Member]
Disclosure of detailed information about financial instruments [line items]
Interest rate			0.00%	4.40%		0.00%	0.00%	0.00%		4.40%	4.40%
Pounds [member]
Disclosure of detailed information about financial instruments [line items]
Interest rate			2.60%	0.00%		2.60%	2.60%	2.60%		0.00%	0.00%
Credit agreement [member]
Disclosure of detailed information about financial instruments [line items]
Credit agreement amount			$ 2,746	$ 785		$ 53,959				$ 16,259
Prepayments		$ 373										$ 7,729
Funded commitments		$ 664
Credit agreement [member] | Later Than One Year and Not Later Than Two Years [Member]
Disclosure of detailed information about financial instruments [line items]
Amortization amounts				783
Credit agreement [member] | Later Than Two Years and Not Later Than Three Years [Member]
Disclosure of detailed information about financial instruments [line items]
Amortization amounts				883
Credit agreement [member] | Later Than Three Years and Not Later Than Four Years [Member]
Disclosure of detailed information about financial instruments [line items]
Amortization amounts				1,096
Credit agreement [member] | Revolving Credit Facility [member]
Disclosure of detailed information about financial instruments [line items]
Credit agreement amount			1,135	1,413		22,303				29,277
Credit agreement [member] | Euro [member]
Disclosure of detailed information about financial instruments [line items]
Credit agreement amount | €							€ 741				€ 746
Credit agreement [member] | US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Credit agreement amount			889	$ 2,826
Credit agreement [member] | Pesos [Member]
Disclosure of detailed information about financial instruments [line items]
Credit agreement amount						17,469				$ 58,555
2017 Credit Agreement [member]
Disclosure of detailed information about financial instruments [line items]
Bank indebtedness			4,050						$ 4,050
2017 Credit Agreement [member] | US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Credit agreement amount			465
2017 Credit Agreement [member] | Pesos [Member]
Disclosure of detailed information about financial instruments [line items]
Credit agreement amount						$ 9,137
2017 Credit Agreement [member] | Pounds [member]
Disclosure of detailed information about financial instruments [line items]
Credit agreement amount | £								£ 344
2014 Credit Agreement [member]
Disclosure of detailed information about financial instruments [line items]
Bank indebtedness			$ 3,680												$ 3,680
Less than or equal to 4.0 ratio [Member]
Disclosure of detailed information about financial instruments [line items]
Leverage ratio			4
Less Than Or Equal To 3.75 Ratio [Member]
Disclosure of detailed information about financial instruments [line items]
Leverage ratio			3.75
Bottom of range [member] | Credit agreement [member]
Disclosure of detailed information about financial instruments [line items]
Interest rate			1.25%			1.25%	1.25%	1.25%
Debt instrument basis point				1.25%						1.25%	1.25%
Bottom of range [member] | 2017 Credit Agreement [member]
Disclosure of detailed information about financial instruments [line items]
Interest rate basis			0.0125
Top of range [member]
Disclosure of detailed information about financial instruments [line items]
Leverage ratio			3.75
Top of range [member] | Credit agreement [member]
Disclosure of detailed information about financial instruments [line items]
Interest rate			6.50%			6.50%	6.50%	6.50%
Debt instrument basis point				3.50%						3.50%	3.50%
Top of range [member] | 2017 Credit Agreement [member]
Disclosure of detailed information about financial instruments [line items]
Interest rate basis			0.0350
Facilities Agreement [member] | Credit agreement [member]
Disclosure of detailed information about financial instruments [line items]
Credit agreement amount													$ 1,937	$ 33,375
Amount of debt repaid	$ 1,350

Financial Instruments - Sche118

Financial Instruments - Schedule of Lines of Credit (Detail) $ in Millions	Dec. 31, 2017MXN ($)
Disclosure of detailed information about financial instruments [abstract]
Other lines of credit in foreign subsidiaries	$ 9,506
Other lines of credit from banks	9,309
Total	18,815
Other lines of credit in foreign subsidiaries, available	7,237
Other lines of credit from banks, available	8,169
Total, available	$ 15,406

Financial Instruments - Summ119

Financial Instruments - Summary of Margin over LIBOR Depending on Leverage Ration (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about financial instruments [line items]
Consolidated leverage ratio	3.85	4.22	5.21
Greater than 5.50x [member]
Disclosure of detailed information about financial instruments [line items]
Applicable margin	3.50%
Less than 5.00 Greater than 4.50 [member]
Disclosure of detailed information about financial instruments [line items]
Applicable margin	3.00%
Less than 4.50 Greater than 4.00 [member]
Disclosure of detailed information about financial instruments [line items]
Applicable margin	2.50%
Less than 4.00 Greater than 3.50 [member]
Disclosure of detailed information about financial instruments [line items]
Applicable margin	2.125%
Less than 3.50 Greater than 3.00 [member]
Disclosure of detailed information about financial instruments [line items]
Applicable margin	1.75%
Less than 3.00 Greater than 2.50 [member]
Disclosure of detailed information about financial instruments [line items]
Applicable margin	1.50%
Less than 2.50 [member]
Disclosure of detailed information about financial instruments [line items]
Applicable margin	1.25%
Top of range [member]
Disclosure of detailed information about financial instruments [line items]
Consolidated leverage ratio	3.75
Top of range [member] | Greater than 5.50x [member]
Disclosure of detailed information about financial instruments [line items]
Consolidated leverage ratio	5.50
Top of range [member] | Less than 5.00 Greater than 4.50 [member]
Disclosure of detailed information about financial instruments [line items]
Consolidated leverage ratio	5
Top of range [member] | Less than 4.50 Greater than 4.00 [member]
Disclosure of detailed information about financial instruments [line items]
Consolidated leverage ratio	4.50
Top of range [member] | Less than 4.00 Greater than 3.50 [member]
Disclosure of detailed information about financial instruments [line items]
Consolidated leverage ratio	4
Top of range [member] | Less than 3.50 Greater than 3.00 [member]
Disclosure of detailed information about financial instruments [line items]
Consolidated leverage ratio	3.50
Top of range [member] | Less than 3.00 Greater than 2.50 [member]
Disclosure of detailed information about financial instruments [line items]
Consolidated leverage ratio	3
Bottom of range [member] | Less than 5.00 Greater than 4.50 [member]
Disclosure of detailed information about financial instruments [line items]
Consolidated leverage ratio	4.50
Bottom of range [member] | Less than 4.50 Greater than 4.00 [member]
Disclosure of detailed information about financial instruments [line items]
Consolidated leverage ratio	4
Bottom of range [member] | Less than 4.00 Greater than 3.50 [member]
Disclosure of detailed information about financial instruments [line items]
Consolidated leverage ratio	3.50
Bottom of range [member] | Less than 3.50 Greater than 3.00 [member]
Disclosure of detailed information about financial instruments [line items]
Consolidated leverage ratio	3
Bottom of range [member] | Less than 3.00 Greater than 2.50 [member]
Disclosure of detailed information about financial instruments [line items]
Consolidated leverage ratio	2.50
Bottom of range [member] | Less than 2.50 [member]
Disclosure of detailed information about financial instruments [line items]
Consolidated leverage ratio	2.50

Financial Instruments - Summ120

Financial Instruments - Summary of Coverage Ratio and Leverage Ratio (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about financial instruments [line items]
Coverage ratio	3.46	3.18	2.61
Leverage ratio	3.85	4.22	5.21
Less than or Equal to 5.25 Ratio [Member]
Disclosure of detailed information about financial instruments [line items]
Leverage ratio	5.25
Less than or Equal to 5.00 Ratio [Member]
Disclosure of detailed information about financial instruments [line items]
Leverage ratio	5
Less than or equal to four point seven five ratio [member]
Disclosure of detailed information about financial instruments [line items]
Leverage ratio	4.75
Less than or Equal to 4.50 Ratio [Member]
Disclosure of detailed information about financial instruments [line items]
Leverage ratio	4.50
Less than or Equal to 4.25 Ratio [Member]
Disclosure of detailed information about financial instruments [line items]
Leverage ratio	4.25
Greater than or Equal to 2.50 [member]
Disclosure of detailed information about financial instruments [line items]
Coverage ratio	2.50
Greater than or Equal to 2.75 [member]
Disclosure of detailed information about financial instruments [line items]
Coverage ratio	2.75

Financial Instruments - Summ121

Financial Instruments - Summary of Consolidated Financial Ratios (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about financial instruments [line items]
Leverage ratio	3.85	4.22	5.21
Coverage ratio	3.46	3.18	2.61
Less than or Equal to 6.00 Ratio [member]
Disclosure of detailed information about financial instruments [line items]
Leverage ratio		6	6
Greater than or Equal to 1.85 Ratio [member]
Disclosure of detailed information about financial instruments [line items]
Coverage ratio		1.85	1.85
Less than or Equal to 5.25 Ratio [Member]
Disclosure of detailed information about financial instruments [line items]
Leverage ratio	5.25
Greater than or Equal to 2.50 [member]
Disclosure of detailed information about financial instruments [line items]
Coverage ratio	2.50

Financial Instruments - Summ122

Financial Instruments - Summary of Other Financial Obligations (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of financial liabilities [line items]
Other financial obligations, short-term	$ 19,362	$ 11,658
Other financial obligations, long-term	12,859	25,972
Total	32,221	37,630
Convertible Subordinated Notes Due 2020 [Member]
Disclosure of financial liabilities [line items]
Other financial obligations, short-term	0	0
Other financial obligations, long-term	9,985	10,417
Total	9,985	10,417
Convertible subordinated notes due 2018 [member]
Disclosure of financial liabilities [line items]
Other financial obligations, short-term	7,115	0
Other financial obligations, long-term	0	13,575
Total	7,115	13,575
Mandatory Convertible Securities 2019 [Member]
Disclosure of financial liabilities [line items]
Other financial obligations, short-term	323	278
Other financial obligations, long-term	371	689
Total	694	967
Liabilities Secured With Accounts Receivable [Member]
Disclosure of financial liabilities [line items]
Other financial obligations, short-term	11,313	11,095
Other financial obligations, long-term	0	0
Total	11,313	11,095
Finance Leases [Member]
Disclosure of financial liabilities [line items]
Other financial obligations, short-term	611	285
Other financial obligations, long-term	2,503	1,291
Total	$ 3,114	$ 1,576

Financial Instruments - Addi123

Financial Instruments - Additional Information - Other Financial Obligations (Detail) $ / shares in Units, $ / shares in Units, shares in Millions

Jun. 19, 2017MXN ($)

Mar. 30, 2017MXN ($)

Mar. 31, 2016MXN ($)

Mar. 26, 2015MXN ($)

Mar. 31, 2015USD ($)

Oct. 31, 2014USD ($)

Dec. 31, 2017MXN ($)shares

Dec. 31, 2016MXN ($)

Dec. 31, 2015MXN ($)

Dec. 31, 2009USD ($)$ / shares

Dec. 31, 2017$ / shares

Jun. 19, 2017USD ($)shares

Jun. 19, 2017MXN ($)shares

Dec. 31, 2016USD ($)$ / shares

Dec. 31, 2016MXN ($)

Dec. 31, 2015USD ($)

Dec. 31, 2015MXN ($)

May 31, 2015USD ($)

Mar. 13, 2015USD ($)

Mar. 15, 2011USD ($)

Dec. 31, 2009MXN ($)$ / shares

Disclosure of detailed information about financial instruments [line items]

Loss on exchange difference

$ (26,000,000)

$ 5,004,000,000

$ 1,970,000,000

Increase common stock value

$ 5,000,000

$ 4,000,000

$ 4,000,000

Additional paid-in capital

$ 9,459,000,000

$ 6,966,000,000

$ 7,613,000,000

$ 140,483,000,000

$ 123,174,000,000

Convertible Subordinated Notes Due 2020 [Member]

Disclosure of detailed information about financial instruments [line items]

Debt principal amount

$ 200,000,000

Debt interest percentage

3.72%

3.72%

Additional ADS issued | shares

42

Loss on exchange difference

$ 365,000,000

Conversion price | $ / shares

$ 11.01

$ 11.45

Conversion rate per dollars

90.8592

87.3646

87.3646

Convertible Subordinated Notes Due 2020 [Member] | Contingent Convertible Units [Member]

Disclosure of detailed information about financial instruments [line items]

Debt principal amount

$ 200,000,000

Convertible Subordinated Notes Due 2016 [Member]

Disclosure of detailed information about financial instruments [line items]

Debt principal amount

$ 352,000,000

$ 978,000,000

Debt interest percentage

3.25%

Debt instrument maturity date

2016-03

2016-03

Nominal value of debt settled

$ 626,000,000

Convertible subordinated notes due 2015 [member]

Disclosure of detailed information about financial instruments [line items]

Debt principal amount

$ 204,000,000

Debt interest percentage

4.875%

Debt repaid amount

$ 204,000,000

Convertible subordinated notes due 2015 [member] | Top of range [member]

Disclosure of detailed information about financial instruments [line items]

Debt instrument conversion amount

200,000,000

Convertible subordinated notes due 2018 [member]

Disclosure of detailed information about financial instruments [line items]

Debt principal amount

$ 690,000,000

Debt interest percentage

3.75%

Debt instrument conversion amount

$ 325,000,000

Debt instrument maturity date

2,018

Issuance of ADS | shares

43

43

Liability component of converted notes

$ 5,468,000,000

Convertible Subordinated Notes Due Two Thousand Sixteen and Eighteen [Member] | American Depositary Shares [Member]

Disclosure of detailed information about financial instruments [line items]

Conversion price | $ / shares

$ 8.57

$ 8.92

Conversion rate per dollars

116.6193

112.1339

112.1339

Mandatory Convertible Securities [Member] | CPO [Member]

Disclosure of detailed information about financial instruments [line items]

Conversion price | $ / shares

$ 17.48

Rate required for converting the note per CPO | $ / shares

$ 26.22

Nominal value of securities converted

$ 236,000,000

Mandatory Convertible Securities [Member] | Mandatory Convertible Securities 2019 [Member]

Disclosure of detailed information about financial instruments [line items]

Debt principal amount

$ 315,000,000

Debt interest percentage

10.00%

10.00%

Debt instrument maturity date

2,019

Reserve of Equity Component of Convertible Instruments [Member] | Convertible Subordinated Notes Due 2020 [Member]

Disclosure of detailed information about financial instruments [line items]

Fair value of conversion price

$ 199,000,000

Parent [member] | Convertible Subordinated Notes Due 2020 [Member]

Disclosure of detailed information about financial instruments [line items]

Debt principal amount

$ 521,000,000

Parent [member] | Convertible subordinated notes due 2015 [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount

$ 200,000,000

Notional amount annual interest rate

3.00%

Parent [member] | Convertible subordinated notes due 2015 [member] | Top of range [member]

Disclosure of detailed information about financial instruments [line items]

Debt principal amount

$ 200,000,000

Parent [member] | Convertible subordinated notes due 2018 [member]

Disclosure of detailed information about financial instruments [line items]

Increase common stock value

4

Additional paid-in capital

$ 7,059,000,000

Expense for inducement premiums paid in shares

$ 769,000,000

Investors [Member] | Convertible Subordinated Notes Due 2020 [Member]

Disclosure of detailed information about financial instruments [line items]

Debt principal amount

$ 321,000,000

Investors [Member] | U.S. treasury bonds [member]

Disclosure of detailed information about financial instruments [line items]

Debt principal amount

$ 200,000,000

Financial Instruments - Summ124

Financial Instruments - Summary of Carrying Amounts and Fair Value of Financial Instruments (Detail) $ in Millions, $ in Millions	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016MXN ($)
Financial assets
Derivative instruments		$ 794		$ 1,900
Other investments and non-current accounts receivable		4,964		5,220
Other investments and non-current accounts receivable		5,758		7,120
Financial liabilities
Long-term debt	$ 9,892	177,022	$ 11,379	235,016
Other financial obligations		12,859		25,972
Derivative instruments		402		818
Total financial liabilities		190,283		261,806
At Fair Value [Member]
Financial assets
Derivative instruments		794		1,900
Other investments and non-current accounts receivable		4,964		5,220
Other investments and non-current accounts receivable		5,758		7,120
Financial liabilities
Long-term debt		184,220		241,968
Other financial obligations		13,381		27,419
Derivative instruments		402		818
Total financial liabilities		$ 198,003		$ 270,205

Financial Instruments - Summ125

Financial Instruments - Summary of Fair Value of Derivative Financial Instruments at Fair Value Hierarchy (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Financial Assets and Financial Liabilities [line items]
Derivative instruments	$ 794	$ 1,900
Investments available-for-sale	275	491
Investments held for trading	77	157
Total derivative financial assets	1,146	2,548
Liabilities measured at fair value Derivative instruments	402	818
Level 1 [Member]
Disclosure Of Financial Assets and Financial Liabilities [line items]
Derivative instruments	0	0
Investments available-for-sale	275	491
Investments held for trading	0	0
Total derivative financial assets	275	491
Liabilities measured at fair value Derivative instruments	0	0
Level 2 [Member]
Disclosure Of Financial Assets and Financial Liabilities [line items]
Derivative instruments	794	1,900
Investments available-for-sale	0	0
Investments held for trading	77	157
Total derivative financial assets	871	2,057
Liabilities measured at fair value Derivative instruments	402	818
Level 3 [Member]
Disclosure Of Financial Assets and Financial Liabilities [line items]
Derivative instruments	0	0
Investments available-for-sale	0	0
Investments held for trading	0	0
Total derivative financial assets	0	0
Liabilities measured at fair value Derivative instruments	$ 0	$ 0

Financial Instruments - Summ126

Financial Instruments - Summary of Derivative Financial Instruments (Detail) $ in Millions, $ in Millions	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016MXN ($)
Disclosure of detailed information about financial instruments [line items]
Derivative financial instrument, Notional amount	$ 1,918		$ 880
Derivative financial instrument, Fair value	73		64
Net Investment Hedges [Member]
Disclosure of detailed information about financial instruments [line items]
Derivative financial instrument, Notional amount	1,160		0
Derivative financial instrument, Fair value	47		0
Foreign exchange forwards related to forecasted transactions [member]
Disclosure of detailed information about financial instruments [line items]
Derivative financial instrument, Notional amount	381		80
Derivative financial instrument, Fair value	3		0
Equity forwards on third party shares [Member]
Disclosure of detailed information about financial instruments [line items]
Derivative financial instrument, Notional amount	168		0
Derivative financial instrument, Fair value	7		0
Interest Rate Swap Contract [Member]
Disclosure of detailed information about financial instruments [line items]
Derivative financial instrument, Notional amount	137		147
Derivative financial instrument, Fair value	16	$ 314	23	$ 477
Fuels Price Hedging [Member]
Disclosure of detailed information about financial instruments [line items]
Derivative financial instrument, Notional amount	72		77
Derivative financial instrument, Fair value	20		15
2019 Mandatorily Convertible Securities and options on the Parent Company's own shares [member]
Disclosure of detailed information about financial instruments [line items]
Derivative financial instrument, Notional amount	0		576
Derivative financial instrument, Fair value	$ (20)		$ 26

Financial Instruments - Addi127

Financial Instruments - Additional Information - Derivative Financial Instruments (Detail) $ in Millions	Mar. 15, 2016	Aug. 31, 2016shares	Oct. 31, 2015MXN ($)	Dec. 31, 2017USD ($)shares	Dec. 31, 2017MXN ($)shares	Dec. 31, 2016USD ($)shares	Dec. 31, 2016MXN ($)shares	Dec. 31, 2015USD ($)	Dec. 31, 2015MXN ($)	Dec. 31, 2017MXN ($)	Mar. 31, 2017USD ($)	Mar. 30, 2017shares	Dec. 31, 2016MXN ($)shares	Oct. 31, 2016USD ($)	Mar. 31, 2016shares	Dec. 31, 2015MXN ($)	Mar. 26, 2015shares	Mar. 15, 2011shares
Disclosure of detailed information about financial instruments [line items]
Gains and (losses) related to recognition of changes in fair values of the derivative instruments				$ 9,000,000	$ 161	$ 17,000,000	$ 317	$ (173,000,000)	$ (2,981)
Financial assets at estimated fair value				73,000,000		64,000,000
Increase (decrease) through conversion of convertible instruments, equity					5,729				$ 5,051
Call capped transaction subject to antidilution adjustments, Shares | shares												258,000,000			297,000,000		297,000,000
Capped call options [Member]
Disclosure of detailed information about financial instruments [line items]
Financial assets at fair value through profit or loss						66,000,000							$ 1,368
Financial assets at fair value through profit or loss, mandatorily measured at fair value				37,000,000		$ 44,000,000		(228,000,000)		$ 725			$ 818			$ (3,928)
Call capped transaction subject to antidilution adjustments, Shares | shares						3,960,000							3,960,000					194,000,000
Call capped transaction subject to antidilution adjustments, Shares | shares						8.57	8.57
Capped call options [Member] | American Depositary Shares Maturing on March 2016 [Member]
Disclosure of detailed information about financial instruments [line items]
Call capped transaction subject to antidilution adjustments, Shares | shares																		114,000,000
Call capped transaction subject to antidilution adjustments, Shares | shares						8.57	8.57
Capped call options [Member] | American Depositary Shares Maturing on March 2018 [Member]
Disclosure of detailed information about financial instruments [line items]
Amount received by CEMEX								$ 44,000,000
Call capped transaction subject to antidilution adjustments, Shares | shares		71,000,000																80,000,000
Call capped transaction subject to antidilution adjustments, Shares | shares						5.27	5.27
Aggregate premium, Amount						$ 222,000,000
Notional amount percentage of capped call								44.20%	44.20%
Notional amount percentage of capped call, expired out of money	55.80%
Capped call options [Member] | 2018 Convertible Notes [Member] | American Depositary Shares Maturing on March 2018 [Member]
Disclosure of detailed information about financial instruments [line items]
Percentage amendment of notional amount		58.30%
Mandatory Convertible Securities 2019 [Member]
Disclosure of detailed information about financial instruments [line items]
Increase (decrease) through conversion of convertible instruments, equity				20,000,000	393	40,000,000	$ 829
Financial assets at fair value through profit or loss, mandatorily measured at fair value				19,000,000		(29,000,000)		$ 18,000,000		359			$ (545)			310
Fuel Price Forward Contracts [Member]
Disclosure of detailed information about financial instruments [line items]
Derivative financial instrument, Notional amount				46,000,000		44,000,000				904			912
Financial assets at estimated fair value				10,000,000		7,000,000				197			145
Gain (loss) due to changes in estimated fair value				3,000,000	57	7,000,000	145	(3,000,000)	$ (52)
Coal Price Forward Contracts [Member]
Disclosure of detailed information about financial instruments [line items]
Derivative financial instrument, Notional amount				26,000,000		33,000,000				511			684
Financial assets at estimated fair value				10,000,000		8,000,000				197			166
Gain (loss) due to changes in estimated fair value				1,000,000	19	8,000,000	166
Net Investment Hedges [Member]
Disclosure of detailed information about financial instruments [line items]
Financial assets at estimated fair value				47,000,000		0
Net Investment Hedges [Member] | Forward Contract [Member]
Disclosure of detailed information about financial instruments [line items]
Derivative financial instrument, Notional amount				1,160,000,000
Net foreign exchange gain				$ 6,000,000	$ 110
Average contract life of foreign exchange forward program				1 year	1 year
Net Investment Hedges [Member] | Top of range [member] | Forward Contract [Member]
Disclosure of detailed information about financial instruments [line items]
Derivative financial instrument, Notional amount											$ 1,250,000,000
Foreign exchange forwards related to forecasted transactions [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets at estimated fair value				$ 3,000,000		0
Foreign exchange forwards related to forecasted transactions [member] | Forward Contract [Member]
Disclosure of detailed information about financial instruments [line items]
Net foreign exchange gain						10,000,000	$ 186	26,000,000	$ 448
Net foreign exchange loss				17,000,000	$ 337
Equity Investments [Member]
Disclosure of detailed information about financial instruments [line items]
Financial assets at fair value through profit or loss				$ 24,000,000		2,000,000		15,000,000		463			30			258
Interest rate swap maturity date			2016-10	2019-03	2019-03
Forward contract to be settled in cash | shares				31,400,000	31,400,000
Amount received by CEMEX			$ 59.5
Estimated cash flows of financial assets reclassified out of available-for-sale financial assets			$ 59.5
Equity Investments [Member] | Major business combination [member]
Disclosure of detailed information about financial instruments [line items]
Amount received by CEMEX														$ 4,000,000
Interest Rate Swap Contract [Member]
Disclosure of detailed information about financial instruments [line items]
Financial assets at fair value through profit or loss				$ 6,000,000		6,000,000		$ 4,000,000		114			112			$ 69
Interest rate swap maturity date				2022-09	2022-09
Financial assets at estimated fair value				$ 16,000,000		$ 23,000,000				$ 314			$ 477
Borrowings, interest rate				5.40%						5.40%

Financial Instruments - Addi128

Financial Instruments - Additional Information - Risk Management (Detail) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2015MXN ($)	Dec. 31, 2017MXN ($)
Disclosure of detailed information about financial instruments [line items]
Hypothetic foreign exchange rate strengthening	10.00%	10.00%
Financial debt percentage	59.00%	59.00%
Decrease in net income due to change in the fair value	$ 14	$ 283
Hypothetical market price percentage	10.00%	10.00%
Other financial obligations				$ 11,658		$ 19,362
Cash flows provided by operating activities from continuing operations		$ 30,966		$ 37,955	$ 18,139
Euro [Member]
Disclosure of detailed information about financial instruments [line items]
Financial debt percentage	33.00%	33.00%
Pounds [member]
Disclosure of detailed information about financial instruments [line items]
Borrowings, interest rate	2.60%			0.00%		2.60%
Financial debt percentage	5.00%	5.00%
Philippine pesos [member]
Disclosure of detailed information about financial instruments [line items]
Borrowings, interest rate	4.60%			0.00%		4.60%
Financial debt percentage	3.00%	3.00%
Conversion Option [Member]
Disclosure of detailed information about financial instruments [line items]
Decrease in net income due to change in the fair value	$ 9	$ 180	$ 8	$ 162
Hypothetical market price percentage	10.00%	10.00%	10.00%	10.00%
Hedge fund investments [member]
Disclosure of detailed information about financial instruments [line items]
Foreign currency translation	$ 1,250
Hypothetic 10% strengthening of the dollar against the Mexican peso [member]
Disclosure of detailed information about financial instruments [line items]
Reduction in income	$ 119	$ 2,343	$ 136	$ 2,829
Credit risk [member]
Disclosure of detailed information about financial instruments [line items]
Expense recognised during period for bad and doubtful debts for related party transaction		2,145
Interest rate risk [member]
Disclosure of detailed information about financial instruments [line items]
Borrowings, adjustment to interest rate basis	2.68%			3.06%		2.68%
Reduction in income	$ 18	$ 353	$ 18	$ 373
Interest rate risk [member] | Top of range [member]
Disclosure of detailed information about financial instruments [line items]
Borrowings, interest rate	0.50%			0.50%		0.50%
Interest rate risk [member] | Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Borrowings, interest rate	31.00%			28.00%		31.00%
Currency risk [member] | Mexico [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	21.00%	21.00%
Currency risk [member] | United States [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	24.00%	24.00%
Currency risk [member] | United Kingdom [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	7.00%	7.00%
Currency risk [member] | Germany [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	4.00%	4.00%
Currency risk [member] | France [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	6.00%	6.00%
Currency risk [member] | Poland [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	2.00%	2.00%
Currency risk [member] | Spain [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	2.00%	2.00%
Currency risk [member] | Rest Of Europe Region [Member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	3.00%	3.00%
Currency risk [member] | Colombia [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	4.00%	4.00%
Currency risk [member] | Costa Rica [Member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	1.00%	1.00%
Currency risk [member] | Panama [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	2.00%	2.00%
Currency risk [member] | Rest of South, Central America and the Caribbean region [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	4.00%	4.00%
Currency risk [member] | Caribbean Tcl [Member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	2.00%	2.00%
Currency risk [member] | Philippines [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	3.00%	3.00%
Currency risk [member] | Egypt [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	1.00%	1.00%
Currency risk [member] | Asia, Middle East and Africa [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	5.00%	5.00%
Currency risk [member] | Other Operations [Member]
Disclosure of detailed information about financial instruments [line items]
Percentage of entity's revenue	9.00%	9.00%
Liquidity risk [member]
Disclosure of detailed information about financial instruments [line items]
Current maturities of debt						$ 36,335
Other financial obligations						40,814
Cash flows provided by operating activities from continuing operations		$ 30,966
Revolving credit facility	$ 1,512					$ 29,711

Financial Instruments - Summ129

Financial Instruments - Summary of Consolidated Net Monetary Assets (Liabilities) by Currency (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about financial instruments [line items]
Monetary assets	$ 57,723	$ 80,739
Monetary liabilities	340,455	383,597
Net monetary assets (liabilities)	(282,732)	(302,858)
US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(157,203)	(221,260)
Pesos [Member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(12,327)	(3,212)
Euro [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(68,605)	(57,935)
Pounds [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(28,477)	(14,408)
Other Currencies [Member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(16,120)	(6,043)
Mexico [member]
Disclosure of detailed information about financial instruments [line items]
Monetary assets	11,798	10,261
Monetary liabilities	17,505	10,564
Net monetary assets (liabilities)	(5,707)	(303)
Mexico [member] | US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(1,097)	(483)
Mexico [member] | Pesos [Member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(4,610)	180
Mexico [member] | Euro [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	0	0
Mexico [member] | Pounds [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	0	0
Mexico [member] | Other Currencies [Member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	0	0
United States [member]
Disclosure of detailed information about financial instruments [line items]
Monetary assets	9,453	26,685
Monetary liabilities	32,158	33,145
Net monetary assets (liabilities)	(22,705)	(6,460)
United States [member] | US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(22,710)	(6,463)
United States [member] | Pesos [Member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	4	3
United States [member] | Euro [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	0	0
United States [member] | Pounds [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	0	0
United States [member] | Other Currencies [Member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	1	0
Europe [member]
Disclosure of detailed information about financial instruments [line items]
Monetary assets	14,182	12,724
Monetary liabilities	45,675	42,336
Net monetary assets (liabilities)	(31,493)	(29,612)
Europe [member] | US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	39	38
Europe [member] | Pesos [Member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	24	0
Europe [member] | Euro [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(10,155)	(9,465)
Europe [member] | Pounds [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(19,358)	(14,408)
Europe [member] | Other Currencies [Member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(2,043)	(5,777)
South, Central America And Caribbean [Member]
Disclosure of detailed information about financial instruments [line items]
Monetary assets	7,347	6,132
Monetary liabilities	12,016	9,130
Net monetary assets (liabilities)	(4,669)	(2,998)
South, Central America And Caribbean [Member] | US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(126)	35
South, Central America And Caribbean [Member] | Pesos [Member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	0	0
South, Central America And Caribbean [Member] | Euro [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	2	0
South, Central America And Caribbean [Member] | Pounds [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	0	0
South, Central America And Caribbean [Member] | Other Currencies [Member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(4,545)	(3,033)
Asia, Middle East and Africa [member]
Disclosure of detailed information about financial instruments [line items]
Monetary assets	9,780	13,101
Monetary liabilities	11,522	11,305
Net monetary assets (liabilities)	(1,742)	1,796
Asia, Middle East and Africa [member] | US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	221	364
Asia, Middle East and Africa [member] | Pesos [Member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	0	0
Asia, Middle East and Africa [member] | Euro [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	0	0
Asia, Middle East and Africa [member] | Pounds [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	0	0
Asia, Middle East and Africa [member] | Other Currencies [Member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(1,963)	1,432
Other Operations [Member]
Disclosure of detailed information about financial instruments [line items]
Monetary assets	5,163	11,836
Monetary liabilities	221,579	277,117
Net monetary assets (liabilities)	(216,416)	(265,281)
Other Operations [Member] | US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(133,530)	(214,751)
Other Operations [Member] | Pesos [Member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(7,745)	(3,395)
Other Operations [Member] | Euro [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(58,452)	(48,470)
Other Operations [Member] | Pounds [member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	(9,119)	0
Other Operations [Member] | Other Currencies [Member]
Disclosure of detailed information about financial instruments [line items]
Net monetary assets (liabilities)	$ (7,570)	$ 1,335

Other Current and Non-curren130

Other Current and Non-current Liabilities - Summary of Other Current Liabilities (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Subclassifications of assets, liabilities and equities [abstract]
Provisions	$ 12,667	$ 11,716
Interest payable	2,496	3,425
Advances from customers	3,886	3,413
Other accounts payable and accrued expenses	5,238	3,976
Other current liabilities	$ 24,287	$ 22,530

Other Current and Non-curren131

Other Current and Non-current Liabilities - Summary of Other Current Liabilities (Parenthetical) (Detail) - 12 months ended Dec. 31, 2017 $ in Millions, $ in Millions	USD ($)	MXN ($)
Subclassifications of assets, liabilities and equities [abstract]
Income tax penalty imposed	$ 25	$ 491

Other Current and Non-curren132

Other Current and Non-current Liabilities - Summary of Other Non-current Liabilities (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Subclassifications of assets, liabilities and equities [abstract]
Asset retirement obligations	$ 7,906	$ 8,237
Accruals for legal assessments and other responsibilities	1,599	1,514
Non-current liabilities for valuation of derivative instruments	402	818
Environmental liabilities	991	1,172
Other non-current liabilities and provisions	4,751	5,305
Other non-current liabilities	$ 15,649	$ 17,046

Other Current and Non-curren133

Other Current and Non-current Liabilities - Summary of Other Non-current Liabilities (Parenthetical) (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Subclassifications of assets, liabilities and equities [abstract]
Non-current portion of tax payable	$ 1,498	$ 2,300
Current portion of tax payable	$ 958	$ 936

Other Current and Non-curren134

Other Current and Non-current Liabilities - Changes in Consolidated Other Current and Non-current Liabilities (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of other provisions [line items]
Balance at beginning of period	$ 28,762	$ 25,611
Business combinations	345	0
Additions or increase in estimates	41,054	67,684
Releases or decrease in estimates	(41,700)	(61,362)
Reclassifications	(1,114)	(741)
Accretion expense	(1,021)	(1,042)
Foreign currency translation	1,990	(1,388)
Balance at end of period	28,316	28,762
Current provisions	12,667	11,716
Asset retirement obligations [Member]
Disclosure of other provisions [line items]
Balance at beginning of period	8,237
Business combinations	0
Additions or increase in estimates	573
Releases or decrease in estimates	(527)
Reclassifications	0
Accretion expense	(191)
Foreign currency translation	(186)
Balance at end of period	7,906	8,237
Current provisions	0
Environmental liability [Member]
Disclosure of other provisions [line items]
Balance at beginning of period	1,172
Business combinations	0
Additions or increase in estimates	21
Releases or decrease in estimates	(54)
Reclassifications	(182)
Accretion expense	0
Foreign currency translation	34
Balance at end of period	991	1,172
Current provisions	0
Legal proceedings provision [Member]
Disclosure of other provisions [line items]
Balance at beginning of period	1,514
Business combinations	0
Additions or increase in estimates	701
Releases or decrease in estimates	(289)
Reclassifications	530
Accretion expense	0
Foreign currency translation	(857)
Balance at end of period	1,599	1,514
Current provisions	0
Valuation derivative instruments [Member]
Disclosure of other provisions [line items]
Balance at beginning of period	823
Business combinations	0
Additions or increase in estimates	214
Releases or decrease in estimates	(306)
Reclassifications	0
Accretion expense	0
Foreign currency translation	(310)
Balance at end of period	421	823
Current provisions	19
Other liabilities and provisions [Member]
Disclosure of other provisions [line items]
Balance at beginning of period	17,016
Business combinations	345
Additions or increase in estimates	39,545
Releases or decrease in estimates	(40,524)
Reclassifications	(1,462)
Accretion expense	(830)
Foreign currency translation	3,309
Balance at end of period	17,399	$ 17,016
Current provisions	$ 12,648

Pensions and Post-Employment135

Pensions and Post-Employment Benefits - Additional Information (Detail) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2015USD ($)	Dec. 31, 2015MXN ($)	Nov. 30, 2012USD ($)
Disclosure of defined benefit plans [line items]
Costs of defined contribution plans		$ 922	$ 865		$ 706
Projected benefits obligation		56,346	52,219		43,840
increase in the net projected liability		199	184		137
Post employment healthcare benefits [member]
Disclosure of defined benefit plans [line items]
Projected benefits obligation		$ 1,080	837
London Interbank Offered Rate (LIBOR) [Member]
Disclosure of defined benefit plans [line items]
Significant assumptions		0.50%
Trinidad Cement Limited [member]
Disclosure of defined benefit plans [line items]
increase in the net projected liability	$ 14	$ 271
Mexico [member]
Disclosure of defined benefit plans [line items]
Projected benefits obligation		$ 3,213	$ 3,247
Medical inflation rates used to determine the projected benefits obligation		7.00%	7.00%
Puerto Rico [member]
Disclosure of defined benefit plans [line items]
Medical inflation rates used to determine the projected benefits obligation		6.90%	4.30%
United Kingdom [member]
Disclosure of defined benefit plans [line items]
Projected benefits obligation		$ 35,602	$ 33,925
Medical inflation rates used to determine the projected benefits obligation		6.70%	6.80%
United States [member]
Disclosure of defined benefit plans [line items]
Projected benefits obligation		$ 6,378	$ 7,110
Medical inflation rates used to determine the projected benefits obligation		5.00%
Income from prior period adjustment of retirement benefit				$ 1	$ 13
Spain [member]
Disclosure of defined benefit plans [line items]
Income from prior period adjustment of retirement benefit	5	$ 99
CEMEX U.K. [member]
Disclosure of defined benefit plans [line items]
Operating assets						$ 553
Annual Rental Payment	$ 20
Percentage Of Annual Rate	5.00%	5.00%
Secured assets Producing Annual Return period	25 years	25 years

Pensions and Post-Employment136

Pensions and Post-Employment Benefits - Schedule Actuarial Results Related to Pension and Other Post Retirement Benefits (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Recorded in operating costs and expenses
Service cost	$ 254	$ 176	$ 158
Past service cost	(55)	8	(8)
Loss for settlements and curtailments	0	0	(13)
Total defined benefit expense	199	184	137
Recorded in other financial expenses
Net interest cost	767	768	652
Recorded in other comprehensive income
Actuarial (gains) losses for the period	(3)	4,019	748
Total (loss) / gain recognized during the period	963	4,971	1,537
Pensions [Member]
Recorded in operating costs and expenses
Service cost	221	151	128
Past service cost	(55)	8	12
Loss for settlements and curtailments	0	0	0
Total defined benefit expense	166	159	140
Recorded in other financial expenses
Net interest cost	693	711	596
Recorded in other comprehensive income
Actuarial (gains) losses for the period	20	3,985	872
Total (loss) / gain recognized during the period	879	4,855	1,608
Other Benefits Plans [Member]
Recorded in operating costs and expenses
Service cost	33	25	30
Past service cost	0	0	(20)
Loss for settlements and curtailments	0	0	(13)
Total defined benefit expense	33	25	(3)
Recorded in other financial expenses
Net interest cost	74	57	56
Recorded in other comprehensive income
Actuarial (gains) losses for the period	(23)	34	(124)
Total (loss) / gain recognized during the period	$ 84	$ 116	$ (71)

Pensions and Post-Employment137

Pensions and Post-Employment Benefits - Schedule of Reconciliations of the Actuarial Benefits Obligations, Pension Plan Assets, And Liabilities Recognized in the Balance Sheet (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of defined benefit plans [line items]
Projected benefit obligation at beginning of the period	$ 52,219	$ 43,840
Service cost	254	176	$ 158
Interest cost	1,701	1,744
Actuarial (gains) losses	703	6,298
Additions through business combinations	3,072	0
Settlements and curtailments	0	(19)
Plan amendments	15	8
Benefits paid	(3,001)	(2,453)
Foreign currency translation	1,383	2,625
Projected benefit obligation at end of the period	56,346	52,219	43,840
Fair value of plan assets at beginning of the period	28,854	25,571
Return on plan assets	934	976
Actuarial (gains) losses for the period	706	2,279
Employer contributions	1,575	1,382
Additions through business combinations	2,841	0
Reduction for disposal of assets	(4)	0
Settlements and curtailments	0	(19)
Benefits paid	(3,001)	(2,453)
Foreign currency translation	788	1,118
Fair value of plan assets at end of the period	32,693	28,854	25,571
Net projected liability recognized in the statement of financial position	23,653	23,365
Pensions [Member]
Disclosure of defined benefit plans [line items]
Projected benefit obligation at beginning of the period	51,055	42,740
Service cost	221	151	128
Interest cost	1,625	1,685
Actuarial (gains) losses	727	6,263
Additions through business combinations	2,801	0
Settlements and curtailments	0	0
Plan amendments	15	8
Benefits paid	(2,920)	(2,379)
Foreign currency translation	1,386	2,587
Projected benefit obligation at end of the period	54,910	51,055	42,740
Fair value of plan assets at beginning of the period	28,828	25,547
Return on plan assets	932	974
Actuarial (gains) losses for the period	707	2,278
Employer contributions	1,494	1,289
Additions through business combinations	2,841	0
Reduction for disposal of assets	(4)	0
Settlements and curtailments	0	0
Benefits paid	(2,920)	(2,379)
Foreign currency translation	787	1,119
Fair value of plan assets at end of the period	32,665	28,828	25,547
Net projected liability recognized in the statement of financial position	22,245	22,227
Other Benefits Plans [Member]
Disclosure of defined benefit plans [line items]
Projected benefit obligation at beginning of the period	1,164	1,100
Service cost	33	25	30
Interest cost	76	59
Actuarial (gains) losses	(24)	35
Additions through business combinations	271	0
Settlements and curtailments	0	(19)
Plan amendments	0	0
Benefits paid	(81)	(74)
Foreign currency translation	(3)	38
Projected benefit obligation at end of the period	1,436	1,164	1,100
Fair value of plan assets at beginning of the period	26	24
Return on plan assets	2	2
Actuarial (gains) losses for the period	(1)	1
Employer contributions	81	93
Additions through business combinations	0	0
Reduction for disposal of assets	0	0
Settlements and curtailments	0	(19)
Benefits paid	(81)	(74)
Foreign currency translation	1	(1)
Fair value of plan assets at end of the period	28	26	$ 24
Net projected liability recognized in the statement of financial position	$ 1,408	$ 1,138

Pensions and Post-Employment138

Pensions and Post-Employment Benefits - Summary of Actuarial (Gains) Losses (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Gain (loss) on remeasurement, net defined benefit liability (asset) [abstract]
Actuarial (gains) losses due to experience	$ 121	$ (511)	$ (105)
Actuarial (gains) losses due to demographic assumptions	(46)	(231)	(153)
Actuarial (gains) losses due financial assumptions	(78)	4,761	1,006
Total	$ (3)	$ 4,019	$ 748

Pensions and Post-Employment139

Pensions and Post-Employment Benefits - Summary of Plan Assets Measured at Estimated Fair Value (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of fair value of plan assets [line items]
Cash	$ 690	$ 2,099
Investments in corporate bonds	6,212	3,667
Investments in government bonds	11,108	10,290
Total fixed-income securities	18,010	16,056
Investment in marketable securities	7,947	7,957
Other investments and private funds	6,736	4,841
Total variable-income securities	14,683	12,798
Total plan assets	32,693	28,854	$ 25,571
Level 1 [Member]
Disclosure of fair value of plan assets [line items]
Cash	579	1,075
Investments in corporate bonds	144	1,050
Investments in government bonds	1,701	209
Total fixed-income securities	2,424	2,334
Investment in marketable securities	6,212	2,001
Other investments and private funds	991	770
Total variable-income securities	7,203	2,771
Total plan assets	9,627	5,105
Level 2 [Member]
Disclosure of fair value of plan assets [line items]
Cash	0	1,024
Investments in corporate bonds	6,067	2,617
Investments in government bonds	9,407	10,081
Total fixed-income securities	15,474	13,722
Investment in marketable securities	1,735	5,956
Other investments and private funds	3,279	3,478
Total variable-income securities	5,014	9,434
Total plan assets	20,488	23,156
Level 3 [Member]
Disclosure of fair value of plan assets [line items]
Cash	111	0
Investments in corporate bonds	1	0
Investments in government bonds	0	0
Total fixed-income securities	112	0
Investment in marketable securities	0	0
Other investments and private funds	2,466	593
Total variable-income securities	2,466	593
Total plan assets	$ 2,578	$ 593

Pensions and Post-Employment140

Pensions and Post-Employment Benefits - Schedule of Estimated Payments for Pensions and Other Post-Employment Benefits (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017MXN ($)
Disclosure - Pensions and Post-Employment Benefits - Schedule of Estimated Payments for Pensions and Other Post-Employment Benefits [Abstract]
2,018	$ 3,071
2,019	2,952
2,020	3,085
2,021	3,080
2,022	3,121
2023 - 2027	$ 15,868

Pensions and Post-Employment141

Pensions and Post-Employment Benefits - Summary of Significant Assumptions Used in the Determination of the Benefit Obligation (Detail) - Defined Benefit Obligation [Member]	Dec. 31, 2017	Dec. 31, 2016
Mexico [member]
Disclosure of defined benefit plans [line items]
Discount rates	9.30%	9.00%
Rate of return on plan assets	9.30%	9.00%
Rate of salary increases	4.00%	4.00%
United States [member]
Disclosure of defined benefit plans [line items]
Discount rates	3.90%	4.20%
Rate of return on plan assets	3.90%	4.20%
Rate of salary increases	0.00%	0.00%
United Kingdom [member]
Disclosure of defined benefit plans [line items]
Discount rates	2.40%	2.60%
Rate of return on plan assets	2.40%	2.60%
Rate of salary increases	3.20%	3.30%
Top of range [member] | Other countries [member]
Disclosure of defined benefit plans [line items]
Discount rates	1.30%	1.10%
Rate of return on plan assets	1.30%	1.10%
Rate of salary increases	1.50%	1.50%
Bottom of range [member] | Other countries [member]
Disclosure of defined benefit plans [line items]
Discount rates	6.30%	7.00%
Rate of return on plan assets	6.30%	7.00%
Rate of salary increases	6.00%	6.00%

Pensions and Post-Employment142

Pensions and Post-Employment Benefits - Aggregate Projected Benefit Obligation for Pension Plans and Other Post-employment Benefits and the Plan Assets by Country (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of fair value of plan assets [line items]
PBO	$ 56,346	$ 52,219	$ 43,840
Assets	32,693	28,854	$ 25,571
Deficit	23,653	23,365
Mexico [member]
Disclosure of fair value of plan assets [line items]
PBO	3,213	3,247
Assets	840	824
Deficit	2,373	2,423
United States [member]
Disclosure of fair value of plan assets [line items]
PBO	6,378	7,110
Assets	4,031	4,192
Deficit	2,347	2,918
United Kingdom [member]
Disclosure of fair value of plan assets [line items]
PBO	35,602	33,925
Assets	23,145	22,154
Deficit	12,457	11,771
Germany [member]
Disclosure of fair value of plan assets [line items]
PBO	4,362	4,429
Assets	213	227
Deficit	4,149	4,202
Other countries [member]
Disclosure of fair value of plan assets [line items]
PBO	6,791	3,508
Assets	4,464	1,457
Deficit	$ 2,327	$ 2,051

Pensions and Post-Employment143

Pensions and Post-Employment Benefits - Sensitivity Analysis of Pension and Other Post-Employment Benefits (Detail) $ in Millions	Dec. 31, 2017MXN ($)
Actuarial assumption of discount rates [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Sensitivity, possible increase in actuarial assumption	$ (4,100)
Sensitivity, possible decrease in actuarial assumption	4,509
Actuarial assumption of expected rates of salary increases [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Sensitivity, possible increase in actuarial assumption	189
Sensitivity, possible decrease in actuarial assumption	(166)
Actuarial assumption of expected rates of pension increases [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Sensitivity, possible increase in actuarial assumption	2,341
Sensitivity, possible decrease in actuarial assumption	(2,209)
Pensions [Member] | Actuarial assumption of discount rates [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Sensitivity, possible increase in actuarial assumption	(4,028)
Sensitivity, possible decrease in actuarial assumption	4,426
Pensions [Member] | Actuarial assumption of expected rates of salary increases [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Sensitivity, possible increase in actuarial assumption	154
Sensitivity, possible decrease in actuarial assumption	(138)
Pensions [Member] | Actuarial assumption of expected rates of pension increases [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Sensitivity, possible increase in actuarial assumption	2,341
Sensitivity, possible decrease in actuarial assumption	(2,209)
Other post employment benefits [Member] | Actuarial assumption of discount rates [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Sensitivity, possible increase in actuarial assumption	(72)
Sensitivity, possible decrease in actuarial assumption	83
Other post employment benefits [Member] | Actuarial assumption of expected rates of salary increases [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Sensitivity, possible increase in actuarial assumption	34
Sensitivity, possible decrease in actuarial assumption	(29)
Other post employment benefits [Member] | Actuarial assumption of expected rates of pension increases [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Sensitivity, possible increase in actuarial assumption	0
Sensitivity, possible decrease in actuarial assumption	$ 0

Income Taxes - Summary of Incom

Income Taxes - Summary of Income Tax Revenue Expense (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Major components of tax expense (income) [abstract]
Current income taxes	$ (3,458)	$ (3,456)	$ 6,121
Deferred income taxes	2,938	331	(8,489)
Income tax expense	$ (520)	$ (3,125)	$ (2,368)

Income Taxes - Summary of Tempo

Income Taxes - Summary of Temporary Differences in Deferred Income Tax Assets and Liabilities (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets:
Tax loss carryforwards and other tax credits	$ 15,900	$ 17,514
Accounts payable and accrued expenses	7,083	9,262
Intangible assets and deferred charges, net	4,175	6,358
Others	0	411
Total deferred tax assets, net	27,158	33,545
Deferred tax liabilities:
Property, machinery and equipment	(27,268)	(35,095)
Investments and other assets	(874)	(2,012)
Total deferred tax liabilities, net	(28,142)	(37,107)
Net deferred tax liabilities	(984)	(3,562)
Country of domicile [member]
Deferred tax liabilities:
Net deferred tax liabilities	(3,644)	(2,509)
Foreign countries [member]
Deferred tax liabilities:
Net deferred tax liabilities	$ 2,660	$ (1,053)

Income Taxes - Summary of Break

Income Taxes - Summary of Breakdown of Changes in Consolidated Deferred Income Taxes (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Changes in deferred tax liability (asset) [abstract]
Deferred income tax (charged) credited to the income statement	$ 2,938	$ 331	$ (8,489)
Deferred income tax (charged) credited to stockholders' equity	200	514	1,089
Reclassification to other captions in the statement of financial position and in the income statement	(560)	531	(5,467)
Change in deferred income tax during the period	$ 2,578	$ 1,376	$ (12,867)

Income Taxes - Summary of Curre

Income Taxes - Summary of Current and Deferred Income Tax Relative to Items of Other Comprehensive Income Loss (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income tax relating to components of other comprehensive income [abstract]
Tax effects relative to foreign exchange fluctuations from debt (note 20.2)	$ 0	$ (410)	$ (272)
Tax effects relative to foreign exchange fluctuations from intercompany balances (note 20.2)	32	(12)	(181)
Tax effects relative to actuarial (gains) and losses (note 20.2)	(1)	788	183
Foreign currency translation and other effects	201	(274)	906
Total current and deferred income tax relative to items of other comprehensive income (loss)	$ 232	$ 92	$ 636

Income Taxes - Summary of Tax L

Income Taxes - Summary of Tax Loss and Tax Credits (Detail) $ in Millions	Dec. 31, 2017MXN ($)
Tax Loss Carry Forwards [Member]
Disclosure of Income Taxes [Line Items]
2,018	$ 1,099
2,019	5,989
2,020	8,929
2,021	4,407
2022 and thereafter	288,466
Tax Loss And Tax Credits, Total	308,890
Amount of unrecognized carryforwards [Member]
Disclosure of Income Taxes [Line Items]
2,018	415
2,019	5,149
2,020	8,115
2,021	2,908
2022 and thereafter	230,425
Tax Loss And Tax Credits, Total	247,012
Amount of recognized carryforwards [Member]
Disclosure of Income Taxes [Line Items]
2,018	684
2,019	840
2,020	814
2,021	1,499
2022 and thereafter	58,041
Tax Loss And Tax Credits, Total	$ 61,878

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) $ in Millions, $ in Millions	Apr. 11, 2011USD ($)	Apr. 11, 2011MXN ($)	Dec. 31, 2018	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2015MXN ($)	Dec. 31, 2014USD ($)	Dec. 31, 2014MXN ($)	Dec. 31, 2013MXN ($)	Dec. 31, 2017MXN ($)
Disclosure of Income Taxes [Line Items]
pre-tax income					$ 61,878
Deferred income tax assets value						$ 3,562					$ 984
Applicable income tax rate				30.00%	30.00%	30.00%	30.00%
Prior year tax loss carryforwards value								$ 547	$ 10,755
Income tax liability settlement period										10 years
Payments incurred net of inflation adjustments										$ 24,804
Reduction in balance payable						$ 3,236	$ 16,244				$ 2,456
Tax loss carryforwards book value before discount							11,136
Reduction in balance payable							$ 3,971
Increase in tax to be paid	$ 30	$ 593
Income tax penalty imposed	$ 48	$ 948
United States [member]
Disclosure of Income Taxes [Line Items]
Deferred income tax assets value				$ 700
Applicable income tax rate				35.00%	35.00%	35.00%	35.00%
Tax Cuts and Jobs Act of 2017, Change in Tax Rate, Increase (decrease) in net deferred tax assets				$ (124)
Subsequent Event [Member] | United States [member]
Disclosure of Income Taxes [Line Items]
Applicable income tax rate			21.00%

Income taxes - Effective Consol

Income taxes - Effective Consolidated Income Tax Rates (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Major components of tax expense (income) [abstract]
Income before income tax	$ 13,659	$ 17,563	$ 3,464
Income tax expense	$ (520)	$ (3,125)	$ (2,368)
Effective consolidated income tax rate	(3.80%)	(17.80%)	(68.40%)

Income Taxes - Schedule of Reco

Income Taxes - Schedule of Reconciliation Between Actual Income Tax Expense and Amount Computed by Applying Statutory Tax Rate (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of accounting profit multiplied by applicable tax rates [abstract]
Mexican statutory tax rate value	(30.00%)	(30.00%)	(30.00%)
Non-taxable dividend income	0.10%	0.20%	37.00%
Difference between accounting and tax expenses, net	(20.90%)	82.60%	(84.30%)
Termination of the income tax consolidation regime in Mexico	(0.00%)	(0.00%)	32.80%
Unrecognized effects during the year related to applicable tax consolidation regimes	0.90%	(3.60%)	8.50%
Non-taxable sale of marketable securities and fixed assets	15.00%	3.70%	36.50%
Difference between book and tax inflation	(31.20%)	(11.00%)	(26.60%)
Differences in the income tax rates in the countries where CEMEX operates	21.90%	11.00%	48.90%
Changes in deferred tax assets	39.80%	(70.10%)	(100.30%)
Changes in provisions for uncertain tax positions	(0.40%)	0.70%	7.90%
Others	1.00%	(1.30%)	1.20%
Effective consolidated tax rate	(3.80%)	(17.80%)	(68.40%)
Mexican statutory tax rate	$ (4,098)	$ (5,269)	$ (1,039)
Non-taxable dividend income	14	32	1,280
Difference between accounting and tax expenses, net	(2,855)	14,507	(2,919)
Termination of the income tax consolidation regime in Mexico	0	0	1,136
Unrecognized effects during the year related to applicable tax consolidation regimes	123	(632)	293
Non-taxable sale of marketable securities and fixed assets	2,049	650	1,263
Difference between book and tax inflation	(4,261)	(1,932)	(922)
Differences in the income tax rates in the countries where CEMEX operates	2,991	1,932	1,693
Changes in deferred tax assets	5,433	(12,320)	(3,473)
Changes in provisions for uncertain tax positions	(55)	123	272
Others	139	(216)	48
Income tax expense	$ (520)	$ (3,125)	$ (2,368)

Income Tax - Schedule of Variat

Income Tax - Schedule of Variations Between the Line Item Changes in Deferred Tax Assets Against the Changes in Deferred Tax Assets in the Balance Sheet (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Changes in Balance Sheet [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Tax loss carryforwards generated and not recognized during the year	$ 0	$ 0
Derecognition related to tax loss carryforwards recognized in prior years	(5,221)	(4,843)
Recognition related to unrecognized tax loss carryforwards	9,694	1,631
Foreign currency translation and other effects	(6,087)	4,068
Changes in deferred tax assets	(1,614)	856
Reconciliation [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Tax loss carryforwards generated and not recognized during the year	6,092	(9,108)
Derecognition related to tax loss carryforwards recognized in prior years	(5,221)	(4,843)
Recognition related to unrecognized tax loss carryforwards	9,694	1,631
Foreign currency translation and other effects	(5,132)	0
Changes in deferred tax assets	$ 5,433	$ (12,320)

Income tax - Schedule of Unreco

Income tax - Schedule of Unrecognized Tax Benefits (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets and liabilities [abstract]
Balance of tax positions at beginning of the period	$ 1,132	$ 1,190	$ 1,396
Additions for tax positions of prior periods	663	200	134
Additions for tax positions of current period	16	90	71
Reductions for tax positions related to prior periods and other items	(32)	(131)	(95)
Settlements and reclassifications	(119)	(163)	(204)
Expiration of the statute of limitations	(138)	(126)	(231)
Foreign currency translation effects	49	72	119
Balance of tax positions at end of the period	$ 1,571	$ 1,132	$ 1,190

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) $ / shares in Units, $ in Millions, $ in Millions	Mar. 30, 2017MXN ($)$ / sharesshares	Mar. 31, 2016MXN ($)$ / sharesshares	Mar. 26, 2015MXN ($)$ / sharesshares	Dec. 31, 2017MXN ($)shares	Dec. 31, 2016MXN ($)shares	Dec. 31, 2015MXN ($)	Dec. 31, 2017USD ($)shares	Dec. 31, 2017MXN ($)shares	Dec. 31, 2016USD ($)shares	Dec. 31, 2016MXN ($)shares	Dec. 31, 2015USD ($)shares	Dec. 31, 2015MXN ($)shares
Disclosure of Classes of Share Capital [Line Items]
Investment in CPOs				$ 301	$ 327
Investment in CPOs | shares				20,541,277	19,751,229
Increase in variable common stock issued through the capitalization of retained earning | shares	1,687,000,000	1,616,000,000	1,500,000,000
Increase in common stock	$ 5	$ 4	$ 4
Nominal value of common stock per CPO | $ / shares	$ 0.00833	$ 0.00833	$ 0.00833
Additional paid-in capital	$ 9,459	$ 6,966	$ 7,613					$ 140,483		$ 123,174
Increase in variable common stock issued to preserve the anti-dilutive rights of note holders | shares	258,000,000	297,000,000	297,000,000
Percentage of net income allocation toward legal reserve				5.00%
Legal reserve								1,804
Non-controlling interest and perpetual debentures								30,879		28,951
Other equity reserve								13,483		24,793
Additional paid-in capital [member]
Disclosure of Classes of Share Capital [Line Items]
Additional paid-in capital								817		742		$ 655
Non-controlling Interest [Member]
Disclosure of Classes of Share Capital [Line Items]
Non-controlling interest and perpetual debentures								22,095		19,876
Net income attributable to noncontroling interest				$ 1,417	$ 1,173	$ 923
Interest Expense [Member]
Disclosure of Classes of Share Capital [Line Items]
Other equity reserve								482		507		432
Caribbean TCL [member] | Trinidad Cement Limited [member]
Disclosure of Classes of Share Capital [Line Items]
Non-controlling ownership interest percentage				30.20%
Perpetual Subordinated Bonds [Member]
Disclosure of Classes of Share Capital [Line Items]
Non-controlling interest and perpetual debentures							$ 447	$ 8,784	$ 438	$ 9,075	$ 440	$ 7,581
CPO [Member]
Disclosure of Classes of Share Capital [Line Items]
Increase in variable common stock issued through the capitalization of retained earning | shares	562,000,000	539,000,000	500,000,000
Increase in variable common stock issued to preserve the anti-dilutive rights of note holders | shares	86,000,000	99,000,000	99,000,000
Number of shares issued | shares							53,200,000	53,200,000	53,900,000	53,900,000	49,200,000	49,200,000

Stockholders' Equity - Summary

Stockholders' Equity - Summary of Breakdown of Common Stock and Additional Paid-in Capital (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Mar. 30, 2017	Mar. 31, 2016	Mar. 26, 2015
Disclosure of classes of share capital [abstract]
Common stock	$ 4,171	$ 4,162
Additional paid-in capital	140,483	123,174	$ 9,459	$ 6,966	$ 7,613
Common stock and additional paid-in capital	$ 144,654	$ 127,336

Stockholders' Equity - Summa156

Stockholders' Equity - Summary of Common Stock (Detail) - shares	Dec. 31, 2017	Dec. 31, 2016
Series A [Member]
Disclosure of Classes of Share Capital [Line Items]
Subscribed and paid shares	30,214,469,912	28,121,583,148
Unissued shares authorized for executives' stock compensation programs	531,739,616	638,468,154
Shares that guarantee the issuance of convertible securities	4,529,605,020	5,218,899,920
Number of shares issued	35,275,814,548	33,978,951,222
Series B [Member]
Disclosure of Classes of Share Capital [Line Items]
Subscribed and paid shares	15,107,234,956	14,060,791,574
Unissued shares authorized for executives' stock compensation programs	265,869,808	319,234,077
Shares that guarantee the issuance of convertible securities	2,264,802,510	2,609,449,960
Number of shares issued	17,637,907,274	16,989,475,611

Stockholders' Equity - Summa157

Stockholders' Equity - Summary of Common Stock (Parenthetical) (Detail) - shares	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Classes of Share Capital [Line Items]
Fixed portion of shares issued	13,068,000,000	13,068,000,000
Variable portion of shares issued	39,845,721,822	37,900,426,833
Series A [Member]
Disclosure of Classes of Share Capital [Line Items]
Percentage of capital stock	64.00%
Series B [Member]
Disclosure of Classes of Share Capital [Line Items]
Percentage of capital stock	36.00%

Stockholders' Equity - Summa158

Stockholders' Equity - Summary of Other Equity Reserves (Detail) - MXN ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of reserves within equity [abstract]
Cumulative translation effect, net of effects from perpetual debentures and deferred income taxes recognized directly in equity (notes 19.2 and 20.4)	$ 21,288	$ 31,293
Cumulative actuarial losses	(10,931)	(10,934)
Effects associated with CEMEX's convertible securities	3,427	4,761
Treasury shares held by subsidiaries	(301)	(327)
Other equity reserves	$ 13,483	$ 24,793

Stockholders' Equity - Summa159

Stockholders' Equity - Summary of Translation Effects of Foreign Subsidiaries Included in Statements of Comprehensive Income (Loss) (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Exchange differences on translation [abstract]
Foreign currency translation result	$ (3,116)	$ 20,648	$ 12,869
Foreign exchange fluctuations from debt	(4,160)	1,367	908
Foreign exchange fluctuations from intercompany balances	(2,243)	(10,385)	(5,801)
Translation effects of foreign subsidiaries, net	$ (9,519)	$ 11,630	$ 7,976

Stockholders' Equity - Detail o

Stockholders' Equity - Detail of Cemex's Perpetual Debentures, Excluding Perpetual Debentures Held by Subsidiaries (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)Anniversaries	Dec. 31, 2017EUR (€)	Dec. 31, 2016USD ($)	Dec. 31, 2016EUR (€)
C10-EUR Capital (SPV) Ltd [Member]
Disclosure of Perpetual Debentures [Line Items]
Issuance date	2007-05
Nominal amount | €		€ 64,000,000		€ 64,000,000
Repurchase option	10
Interest rate	4.79%	4.79%
LIBOR [Member] | C8 Capital (SPV) Ltd [Member]
Disclosure of Perpetual Debentures [Line Items]
Issuance date	2007-02
Nominal amount | $	$ 135,000,000		$ 135,000,000
Repurchase option	8
Interest rate	4.40%	4.40%
LIBOR [Member] | C5 Capital (SPV) Ltd [Member]
Disclosure of Perpetual Debentures [Line Items]
Issuance date	2006-12
Nominal amount | $	$ 61,000,000		61,000,000
Repurchase option	5
Interest rate	4.277%	4.277%
LIBOR [Member] | C10 Capital (SPV) Ltd [Member]
Disclosure of Perpetual Debentures [Line Items]
Issuance date	2006-12
Nominal amount | $	$ 175,000,000		$ 175,000,000
Repurchase option	10
Interest rate	4.71%	4.71%

Executive Share-based Compen161

Executive Share-based Compensation - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017MXN ($)shares	Dec. 31, 2017COP ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2016COP ($)	Dec. 31, 2015MXN ($)	Dec. 31, 2015COP ($)
Disclosure of Terms and Conditions of Share-based Payment Arrangement [Line Items]
Share-based compensation expense	$ 817,000,000		$ 742,000,000		$ 655,000,000
Commitment payments in cash	$ 0		$ 0
CEMEX Latam Holdings, S.A [member]
Disclosure of Terms and Conditions of Share-based Payment Arrangement [Line Items]
Share-based compensation program service period	4 years	4 years
Share-based compensation shares issued	172,981	172,981	271,461	271,461	242,618	242,618
Share-based compensation shares expected to be issued | shares	798,552
Weighted average price per granted shares		$ 13,077		$ 13,423		$ 14,291
CPO [Member]
Disclosure of Terms and Conditions of Share-based Payment Arrangement [Line Items]
Share-based compensation program service period	4 years	4 years
Share-based compensation annual grant percentage	25.00%	25.00%
Share-based compensation shares issued	53,200,000	53,200,000	53,900,000	53,900,000	49,200,000	49,200,000
Share-based compensation shares expected to be issued | shares	79,000,000
Weighted average price per granted shares	$ 14.28		$ 13.79		$ 13.34

Earnings per Share - Summary of

Earnings per Share - Summary of Calculations of Earnings per Share (Detail) - MXN ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings per share [abstract]
Weighted average number of shares outstanding	43,107,457	42,211,409	41,491,672
Capitalization of retained earnings	1,687,295	1,687,295	1,687,295
Effect of dilutive instruments - mandatorily convertible securities (note 16.2)	708,153	708,153	708,153
Weighted average number of shares - basic	45,502,905	44,606,857	43,887,120
Effect of dilutive instruments - share-based compensation (note 21)	237,102	226,972	171,747
Effect of potentially dilutive instruments - optionally convertible securities (note 16.2)	2,698,600	3,834,458	5,065,605
Weighted average number of shares - diluted	48,438,607	48,668,287	49,124,472
Net income from continuing operations	$ 13,139	$ 14,438	$ 1,096
Less: non-controlling interest net income	1,417	1,173	923
Controlling interest net income from continuing operations	11,722	13,265	173
Plus: after tax interest expense on mandatorily convertible securities	91	119	144
Controlling interest net income from continuing operations - for basic earnings per share calculations	11,813	13,384	317
Plus: after tax interest expense on optionally convertible securities	903	1,079	1,288
Controlling interest net income from continuing operations - for diluted earnings per share calculations	12,716	14,463	1,605
Net income from discontinued operations	$ 3,499	$ 768	$ 1,028
Basic earnings per share
Controlling interest basic earnings per share	$ 0.34	$ 0.32	$ 0.03
Controlling interest basic earnings per share from continuing operations	0.26	0.30	0.01
Controlling interest basic earnings per share from discontinued operations	0.08	0.02	0.02
Controlling interest diluted earnings per share
Controlling interest diluted earnings per share	0.34	0.32	0.03
Controlling interest diluted earnings per share from continuing operations	0.26	0.30	0.01
Controlling interest diluted earnings per share from discontinued operations	$ 0.08	$ 0.02	$ 0.02

Commitments - Additional Inform

Commitments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)T	Apr. 30, 2016MWh	Jul. 30, 2012	Feb. 28, 2010	Dec. 31, 2017MXN ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2015USD ($)	Dec. 31, 2015MXN ($)
Disclosure of Commitments and Contingencies [Line Items]
Guaranteed loans of certain subsidiaries	$ 1,506,000,000				$ 29,601,000,000	$ 2,887,000,000	$ 59,819,000,000
Liabilities secured by property, machinery and equipment					0		0
Self-insured health care benefits	64,000,000				1,258,000,000	$ 69,000,000	$ 1,430,000,000	$ 69,000,000	$ 1,189,000,000
Bottom of range [member]
Disclosure of Commitments and Contingencies [Line Items]
Stop-loss limits value under medical assistance	23,000
Bottom of range [member] | Employees [Member]
Disclosure of Commitments and Contingencies [Line Items]
Stop-loss limits value under medical assistance	$ 100,000
Top of range [member]
Disclosure of Commitments and Contingencies [Line Items]
Combined volume allocate to TEG and other energy producer | T	950,000
Stop-loss limits value under medical assistance	$ 400,000
Top of range [member] | Employees [Member]
Disclosure of Commitments and Contingencies [Line Items]
Stop-loss limits value under medical assistance	2,500,000
International Business Machines Corporation [Member]
Disclosure of Commitments and Contingencies [Line Items]
Strategic agreement period			10-year
Ventikas [Member]
Disclosure of Commitments and Contingencies [Line Items]
Acquired energy usage period		20 years
Estimated annual cost	27,000,000
Combined generation capacity | MWh		252
EURUS [Member]
Disclosure of Commitments and Contingencies [Line Items]
Acquired energy usage period				20 years
Estimated annual cost	71,000,000
Installed capacity				250 MW
Termoelectrica del Golfo [Member]
Disclosure of Commitments and Contingencies [Line Items]
Estimated annual cost	$ 110,000,000
Combined volume allocate to TEG and other energy producer | T	1,200,000
CEMEX Ostzement GmbH [Member]
Disclosure of Commitments and Contingencies [Line Items]
Estimated annual cost					$ 12,000,000

Commitments - Summary of Contra

Commitments - Summary of Contractual Obligations (Detail) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016MXN ($)
Disclosure of Detailed Information About Borrowings [Line Items]
Long-term debt	$ 9,892	$ 11,379	$ 177,022	$ 235,016
Finance lease obligations	175	107
Convertible notes	906	1,205
Total debt and other financial obligations	10,973	12,691
Operating leases	494	515
Interest payments on debt	3,073	3,996
Pension plans and other benefits	1,587	1,414
Purchases of raw materials, fuel and energy	4,326	4,440
Total contractual obligations	20,453	$ 23,056	401,901	477,720
Less than 1 year [Member]
Disclosure of Detailed Information About Borrowings [Line Items]
Long-term debt	798		(15,685)	$ (752)
Finance lease obligations	36
Convertible notes	379
Total debt and other financial obligations	1,213
Operating leases	109
Interest payments on debt	448
Pension plans and other benefits	156
Purchases of raw materials, fuel and energy	649
Total contractual obligations	2,575		50,599
1-3 years [Member]
Disclosure of Detailed Information About Borrowings [Line Items]
Long-term debt	519
Finance lease obligations	87
Convertible notes	527
Total debt and other financial obligations	1,133
Operating leases	181
Interest payments on debt	968
Pension plans and other benefits	307
Purchases of raw materials, fuel and energy	810
Total contractual obligations	3,399		66,790
3-5 Years [Member]
Disclosure of Detailed Information About Borrowings [Line Items]
Long-term debt	2,411
Finance lease obligations	52
Convertible notes	0
Total debt and other financial obligations	2,463
Operating leases	136
Interest payments on debt	809
Pension plans and other benefits	316
Purchases of raw materials, fuel and energy	866
Total contractual obligations	4,590		90,193
More than 5 Years [Member]
Disclosure of Detailed Information About Borrowings [Line Items]
Long-term debt	6,164		120,275
Finance lease obligations	0
Convertible notes	0
Total debt and other financial obligations	6,164
Operating leases	68
Interest payments on debt	848
Pension plans and other benefits	808
Purchases of raw materials, fuel and energy	2,001
Total contractual obligations	$ 9,889		$ 194,319

Commitments - Summary of Con165

Commitments - Summary of Contractual Obligations (Parenthetical) (Detail) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2015USD ($)	Dec. 31, 2015MXN ($)	Dec. 31, 2017MXN ($)
Disclosure of Detailed Information About Borrowings [Line Items]
Future minimum lease payments	$ 158						$ 3,105
Rental expense	$ 115	$ 2,252	$ 121	$ 2,507	$ 114	$ 1,967
Period for which lease payments made	Next 10 years	Next 10 years
1-3 years [Member]
Disclosure of Detailed Information About Borrowings [Line Items]
Future minimum lease payments	$ 79						1,552
3-5 Years [Member]
Disclosure of Detailed Information About Borrowings [Line Items]
Future minimum lease payments	$ 48						$ 943

Legal Proceedings - Additional

Legal Proceedings - Additional Information (Detail) $ in Millions, $ in Millions	1 Months Ended	12 Months Ended
	Jul. 13, 2013	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2015MXN ($)	Dec. 31, 2016MXN ($)
Disclosure of Commitments and Contingencies [Line Items]
Lease contract for a period	5 years
Cash advances by CEMEX Colombia		$ 13.4
Interest for advances		$ 1.2
Purchase of the assets related to the project in Colombian pesos				$ 14.3			$ 295
Impairment loss			$ 984		$ 1,899	$ 1,145
VAT Payable [member]
Disclosure of Commitments and Contingencies [Line Items]
Accounts payable				9.2			191
Bottom of range [member]
Disclosure of Commitments and Contingencies [Line Items]
Expiration of property over the aforementioned assets		5 years	5 years
Top of range [member]
Disclosure of Commitments and Contingencies [Line Items]
Expiration of property over the aforementioned assets		10 years	10 years
Maceo plant [member]
Disclosure of Commitments and Contingencies [Line Items]
Impairment loss				0
Consideration transferred				$ 9.1			$ 188
Investment in plant		$ 340
Net book value of adjustment in investment property		$ 333	$ 6,543

Contingencies - Additional Info

Contingencies - Additional Information (Detail) € in Millions, $ in Millions, $ in Millions	Dec. 11, 2017USD ($)	Dec. 11, 2017MXN ($)	Jun. 30, 2012USD ($)	Jun. 30, 2012MXN ($)	Dec. 31, 2017USD ($)T	Dec. 31, 2017MXN ($)T	Dec. 31, 2012USD ($)Employees	Dec. 31, 2012MXN ($)Employees	Dec. 31, 2011Employees	Dec. 31, 2017MXN ($)	Dec. 31, 2016	Sep. 30, 2016USD ($)	Sep. 30, 2016MXN ($)	Sep. 30, 2016EUR (€)	Dec. 31, 2015	Jun. 30, 2010USD ($)	Jun. 30, 2010MXN ($)
Disclosure of Commitments and Contingencies [Line Items]
Accrued environmental remediation liabilities																$ 100	$ 1,976
Fine payable by S.L.U.												$ 7	$ 138	€ 6
Development levy on clay					$ 18					$ 357
Number of former employees | Employees							25	25	25
Amount of damages and interest identified							$ 66	$ 1,297
Damages sought value			$ 80	$ 1,564
Euro [member]
Disclosure of Commitments and Contingencies [Line Items]
Official closing exchange rates					23.5866					23.5866	21.7945				18.7181
Pounds [member]
Disclosure of Commitments and Contingencies [Line Items]
Official closing exchange rates					26.5361					26.5361	25.5361				25.4130
Colombian Peso [member]
Disclosure of Commitments and Contingencies [Line Items]
Official closing exchange rates					0.0066					0.0066	0.0069				0.0055
United Kingdom [member]
Disclosure of Commitments and Contingencies [Line Items]
Accrued environmental remediation liabilities					$ 178					$ 3,493
Environmental remediation, description					Expenditure was assessed and quantified over the period in which the sites have the potential to cause environmental harm, which was accepted by the regulator as being up to 60 years from the date of closure	Expenditure was assessed and quantified over the period in which the sites have the potential to cause environmental harm, which was accepted by the regulator as being up to 60 years from the date of closure
United States [member]
Disclosure of Commitments and Contingencies [Line Items]
Accrued environmental remediation liabilities					$ 30					$ 586
Superintendencia de Industria y Comercio [member]
Disclosure of Commitments and Contingencies [Line Items]
Fine imposed	$ 25	$ 491
CEMEX Polska [Member]
Disclosure of Commitments and Contingencies [Line Items]
Fine imposed					$ 27	$ 531
Parent [member] | Polish Zloty [Member]
Disclosure of Commitments and Contingencies [Line Items]
Official closing exchange rates					3,470,000					3,470,000
Parent [member] | Euro [member]
Disclosure of Commitments and Contingencies [Line Items]
Official closing exchange rates					830,000					830,000
Parent [member] | Pounds [member]
Disclosure of Commitments and Contingencies [Line Items]
Official closing exchange rates					740,000					740,000
Parent [member] | Colombian Peso [member]
Disclosure of Commitments and Contingencies [Line Items]
Official closing exchange rates					2,984,000,000					2,984,000,000
Parent [member] | Israelite Shekel [Member]
Disclosure of Commitments and Contingencies [Line Items]
Official closing exchange rates					3,470,000					3,470,000
Top of range [member]
Disclosure of Commitments and Contingencies [Line Items]
Incrementing production up on environmental permit needs modifications | T					950,000	950,000

Related Parties - Additional In

Related Parties - Additional Information (Detail) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2017MXN ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016MXN ($)	Dec. 31, 2015USD ($)	Dec. 31, 2015MXN ($)
Disclosure of Transactions Between Related Parties [Line Items]
Amount of compensation of CEMEX board of directors	$ 47	$ 887	$ 43	$ 802	$ 36	$ 579
Performance Bonuses [Member]
Disclosure of Transactions Between Related Parties [Line Items]
Amount of compensation of CEMEX board of directors	35	661	32	595	25	402
Executive Share-Based Compensation Programs [Member]
Disclosure of Transactions Between Related Parties [Line Items]
Amount of compensation of CEMEX board of directors	$ 12	$ 227	$ 11	$ 207	$ 11	$ 177

Subsequent Events - Additional

Subsequent Events - Additional (Detail) $ in Thousands, € in Millions, $ in Millions, $ in Millions	Apr. 09, 2018USD ($)	Apr. 09, 2018COP ($)	Mar. 29, 2018USD ($)	Mar. 15, 2018USD ($)	Feb. 14, 2018	Jan. 10, 2018EUR (€)	Jan. 05, 2018USD ($)	Jan. 05, 2018MXN ($)	Apr. 11, 2011USD ($)	Apr. 11, 2011MXN ($)	Dec. 31, 2017
Disclosure of non-adjusting events after reporting period [line items]
Increase in tax to be paid									$ 30,000	$ 593
Income tax penalty imposed									$ 48,000	$ 948
Lehigh White Cement Company [member]
Disclosure of non-adjusting events after reporting period [line items]
Ownership interest											24.50%
CEMEX, S.A.B. de C.V. January 2022 [member]
Disclosure of non-adjusting events after reporting period [line items]
Payment of debt principal outstanding and accrued interest | €						€ 419
Debt principal amount outstanding | €						€ 400
Events after reporting period [member] | Convertible subordinated notes due 2018 [member]
Disclosure of non-adjusting events after reporting period [line items]
Payment of debt principal outstanding and accrued interest				$ 372,000
Debt principal amount outstanding				365,000
Events after reporting period [member] | CEMEX, S.A.B. de C.V. January 2022 [member]
Disclosure of non-adjusting events after reporting period [line items]
Payment of debt principal outstanding and accrued interest				357,000
Debt principal amount outstanding				$ 341,000
Events after reporting period [member] | Colombia [member]
Disclosure of non-adjusting events after reporting period [line items]
Increase in tax to be paid	$ 42,000	$ 124,790
Income tax penalty imposed	$ 42,000	$ 124,790
Events after reporting period [member] | Lehigh White Cement Company [member]
Disclosure of non-adjusting events after reporting period [line items]
Ownership interest					36.75%
Payment for ownership interest			$ 34,000
Superintendencia de Industria y Comercio [member] | Entering into significant commitments or contingent liabilities [member]
Disclosure of non-adjusting events after reporting period [line items]
Payment of fine imposed							$ 25,000	$ 491

Main Subsidiaries - Summary of

Main Subsidiaries - Summary of Main Subsidiaries Interests (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
CEMEX Topmix LLC, CEMEX Supermix LLC and CEMEX Falcon LLC [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX Topmix LLC, CEMEX Supermix LLC and CEMEX Falcon LLC
Country of incorporation of subsidiary	United Arab Emirates
Proportion of ownership interest in subsidiary	100.00%	100.00%
CEMEX Colombia S.A [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX Colombia S.A.
Country of incorporation of subsidiary	Colombia
Proportion of ownership interest in subsidiary	99.90%	99.90%
Cemento Bayano, S.A. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	Cemento Bayano, S.A.
Country of incorporation of subsidiary	Panama
Proportion of ownership interest in subsidiary	100.00%	100.00%
CEMEX Mexico, S. A. de C.V. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX México, S. A. de C.V.
Country of incorporation of subsidiary	Mexico
Proportion of ownership interest in subsidiary	100.00%	100.00%
CEMEX Espana, S.A. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX España, S.A.
Country of incorporation of subsidiary	Spain
Proportion of ownership interest in subsidiary	99.90%	99.90%
CEMEX, Inc. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX, Inc.
Country of incorporation of subsidiary	United States of America
Proportion of ownership interest in subsidiary	100.00%	100.00%
CEMEX Latam Holdings, S.A. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX Latam Holdings, S.A.
Country of incorporation of subsidiary	Spain
Proportion of ownership interest in subsidiary	73.20%	73.30%
CEMEX (Costa Rica), S.A. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX (Costa Rica), S.A.
Country of incorporation of subsidiary	Costa Rica
Proportion of ownership interest in subsidiary	99.10%	99.10%
CEMEX Nicaragua, S.A. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX Nicaragua, S.A.
Country of incorporation of subsidiary	Nicaragua
Proportion of ownership interest in subsidiary	100.00%	100.00%
Assiut Cement Company [Member]
Disclosure of subsidiaries [line items]
Name of subsidiary	Assiut Cement Company
Country of incorporation of subsidiary	Egypt
Proportion of ownership interest in subsidiary	95.80%	95.80%
CEMEX Dominicana, S.A. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX Dominicana, S.A.
Country of incorporation of subsidiary	Dominican Republic
Proportion of ownership interest in subsidiary	100.00%	100.00%
Trinidad Cement Limited [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	Trinidad Cement Limited
Country of incorporation of subsidiary	Trinidad and Tobago
Proportion of ownership interest in subsidiary	69.80%
CEMEX de Puerto Rico Inc. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX de Puerto Rico Inc.
Country of incorporation of subsidiary	Puerto Rico
Proportion of ownership interest in subsidiary	100.00%	100.00%
CEMEX France Gestion (S.A.S.) [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX France Gestion (S.A.S.)
Country of incorporation of subsidiary	France
Proportion of ownership interest in subsidiary	100.00%	100.00%
CEMEX Holdings Philippines, Inc. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX Holdings Philippines, Inc.
Country of incorporation of subsidiary	Philippines
Proportion of ownership interest in subsidiary	55.00%	55.00%
Solid Cement Corporation [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	Solid Cement Corporation
Country of incorporation of subsidiary	Philippines
Proportion of ownership interest in subsidiary	100.00%	100.00%
APO Cement Corporation [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	APO Cement Corporation
Country of incorporation of subsidiary	Philippines
Proportion of ownership interest in subsidiary	100.00%	100.00%
CEMEX Holdings (Malaysia) Sdn Bhd [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX Holdings (Malaysia) Sdn Bhd
Country of incorporation of subsidiary	Malaysia
Proportion of ownership interest in subsidiary	100.00%	100.00%
CEMEX U.K. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX U.K.
Country of incorporation of subsidiary	United Kingdom
Proportion of ownership interest in subsidiary	100.00%	100.00%
CEMEX Deutschland, AG. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX Deutschland, AG.
Country of incorporation of subsidiary	Germany
Proportion of ownership interest in subsidiary	100.00%	100.00%
CEMEX Czech Republic, s.r.o. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX Czech Republic, s.r.o.
Country of incorporation of subsidiary	Czech Republic
Proportion of ownership interest in subsidiary	100.00%	100.00%
CEMEX Polska sp. Z.o.o.[member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX Polska sp. Z.o.o.
Country of incorporation of subsidiary	Poland
Proportion of ownership interest in subsidiary	100.00%	100.00%
CEMEX Holdings (Israel) Ltd. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX Holdings (Israel) Ltd.
Country of incorporation of subsidiary	Israel
Proportion of ownership interest in subsidiary	100.00%	100.00%
CEMEX SIA [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX SIA
Country of incorporation of subsidiary	Latvia
Proportion of ownership interest in subsidiary	100.00%	100.00%
Neoris N.V. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	Neoris N.V.
Country of incorporation of subsidiary	The Netherlands
Proportion of ownership interest in subsidiary	99.80%	99.80%
CEMEX International Trading, LLC [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	CEMEX International Trading, LLC
Country of incorporation of subsidiary	United States of America
Proportion of ownership interest in subsidiary	100.00%	100.00%
Transenegy, Inc. [member]
Disclosure of subsidiaries [line items]
Name of subsidiary	Transenergy, Inc.
Country of incorporation of subsidiary	United States of America
Proportion of ownership interest in subsidiary	100.00%	100.00%

Main Subsidiaries - Summary 171

Main Subsidiaries - Summary of Main Subsidiaries Interests (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
CEMEX Topmix LLC, CEMEX Supermix LLC and CEMEX Falcon LLC [member]
Disclosure of subsidiaries [line items]
Percentage of interest	100.00%	100.00%
Ownership percentage	49.00%
Remaining ownership percentage	51.00%
CEMEX Colombia S.A [member]
Disclosure of subsidiaries [line items]
Percentage of interest	99.90%	99.90%
Cemento Bayano, S.A. [member]
Disclosure of subsidiaries [line items]
Percentage of interest	100.00%	100.00%
Interest held on treasury	0.515%
Common Stock [member] | CEMEX Colombia S.A [member]
Disclosure of subsidiaries [line items]
Percentage of interest	99.70%
Preferred Shares [Member] | CEMEX Colombia S.A [member]
Disclosure of subsidiaries [line items]
Percentage of interest	98.90%