The Company and Basis of Presentation (Policies)	9 Months Ended
The Company and Basis of Presentation (Policies)	Sep. 30, 2018
Accounting Policies [Abstract]
The Company	The Company EVERTEC, Inc. (formerly known as Carib Latam Holdings, Inc.) and its subsidiaries (collectively the “Company,” or “EVERTEC”) is a leading full-service transaction processing business in Latin America and the Caribbean. The Company is based in Puerto Rico and provides a broad range of merchant acquiring, payment processing and business process management. The Company provides services across 26 countries in the region. EVERTEC owns and operates the ATH network, one of the leading automated teller machine (“ATM”) and personal identification number (“PIN”) debit networks in Latin America. In addition, EVERTEC provides a comprehensive suite of services for core bank processing, cash processing and technology outsourcing in the regions the Company serves. EVERTEC serves a broad and diversified customer base of leading financial institutions, merchants, corporations and government agencies with solutions that are essential to their operations, enabling them to issue, process and accept transactions securely.
Basis of Presentation	Basis of Presentation The unaudited consolidated condensed financial statements of EVERTEC have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The preparation of the accompanying unaudited consolidated condensed financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the unaudited consolidated condensed financial statements. Actual results could differ from these estimates. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted from these statements pursuant to the rules and regulations of the SEC and, accordingly, these consolidated condensed financial statements should be read in conjunction with the Audited Consolidated Financial Statements of the Company for the year ended December 31, 2017, included in the Company’s 2017 Form 10-K. In the opinion of management, the accompanying consolidated condensed financial statements, prepared in accordance with GAAP, contain all adjustments necessary for a fair presentation. Intercompany accounts and transactions are eliminated in consolidation.
Recent Accounting Pronouncements	Recently issued accounting pronouncements In August 2018, the Financial Accounting Standards Board ("FASB") issued an updated disclosure framework for fair value measurements. The amendments in the issued update remove, modify and add disclosure requirements on fair value measurements in Topic 820 Fair Value Measurements. The amendments in this update are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Certain amendments in the update should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented. Early adoption is permitted upon issuance of this update. An entity is permitted to early adopt any removed or modified disclosures upon issuance of this update and delay adoption of the additional disclosures until their effective date. The Company is currently evaluating the impact of the adoption of this update on the notes to the consolidated financial statements. In August 2018, the FASB issued updated guidance for customer's accounting for implementation costs incurred in a cloud computing arrangement that is a service contract. The amendments in this update align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The amendments in this update are effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. The amendments in this update should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company is currently evaluating the impact of the adoption of this update to the consolidated financial statements. Accounting pronouncements issued prior to 2018 and not yet adopted During 2016, the FASB issued a new standard related to Topic 842 Leases to increase transparency and comparability among organizations by recognizing Right of Use ("ROU") assets and lease liabilities on the balance sheet for all leases, other than leases that meet the definition of a short term lease, notwithstanding the lease classification. Under the standard, organizations are required to provide disclosures with the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. In July 2018, the FASB issued Accounting Standards Update ("ASU") 2018-10 and ASU 2018-11, to amend narrow aspects of the standard, to add a new and optional transition method for the adoption of the new standard and provide lessors with a practical expedient, among others. The Company will apply Accounting Standards Codification ("ASC") Topic 842 at the adoption date in accordance with the new and optional transition method available, as well as the package of practical expedients and the use of hindsight practical expedient available for transition. Accordingly, upon transition, the Company will account for its existing leases without reassessing (a) whether the contract contains a lease under ASC Topic 842, (b) whether the lease classification should be different in accordance with ASC Topic 842, or (c) whether initial direct costs before transition would have met the definition of the new leasing standard. In addition, the Company will recognize an ROU asset and a lease liability for all operating leases in its balance sheet. For financing leases, the Company will change the characterization of the asset (to an ROU asset) and the obligation (to a lease liability). The Company will not restate comparative periods. The Company is in the process of calculating the impact of the recognition of ROU assets and lease liabilities for operating leases, which is the most significant impact expected, assessing the potential impact of the new standards in other accounting areas and designing the internal controls to be implemented with the adoption of ASC Topic 842. During 2016, the FASB issued updated guidance for the measurement of credit losses on financial instruments. The amendments in this update require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset or assets to present the net carrying value at the amount expected to be collected on the financial asset. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectibility of the reported amount. An entity must use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. The Company expects to adopt this guidance in the fiscal period required by this update and continues to evaluate if the adoption will have an impact on the consolidated financial statements. In August 2017, the FASB issued updated guidance to improve accounting for hedging activities. The amendments in this update better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. To meet that objective, the amendments expand and refine hedge accounting for both nonfinancial and financial risk components and align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. The amendments in this update require an entity to present the earnings effect of the hedging instrument in the same income statement line item in which the earnings effect of the hedged item is reported and also include certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. The Company expects to adopt this guidance in the required period and continues to evaluate if this update will have an impact on the consolidated financial statements.