Unaudited Condensed Consolidated Financial Statements (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying condensed consolidated financial statements of LivaNova as of, and for the three and nine months ended, September 30, 2017 and September 30, 2016, have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S.” and such principles, “U.S. GAAP”) for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. The accompanying condensed consolidated balance sheet of LivaNova at December 31, 2016 has been derived from audited financial statements contained in our 2016 Form 10-K, but does not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, the condensed consolidated financial statements reflect all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation of the operating results of LivaNova and its subsidiaries, for the three and nine months ended September 30, 2017, and are not necessarily indicative of the results that may be expected for the year ending December 31, 2017. The financial information presented herein should be read in conjunction with the audited consolidated financial statements and notes thereto accompanying our 2016 Form 10-K.
Foreign Currency	Foreign Currency Our functional currency is the U.S. dollar, however, a portion of the revenues earned and expenses incurred by certain of our subsidiaries are denominated in currencies other than the U.S. dollar. We determine the functional currency of our subsidiaries that exist and operate in different economic and currency environments based on the primary economic environment in which the subsidiary operates, that is, the currency of the environment in which an entity primarily generates and expends cash. Our significant foreign subsidiaries are located in Europe and the U.S. The functional currency of our significant European subsidiaries is the Euro and the functional currency of our significant U.S. subsidiaries is the U.S. dollar. Assets and liabilities for subsidiaries whose functional currency is not the U.S. dollar are translated into U.S. dollars based on a combination of both current and historical exchange rates, while their revenues earned and expenses incurred are translated into U.S. dollars at average period exchange rates. Translation adjustments are included as ‘Accumulated other comprehensive income (loss)’ (“AOCI”) in the condensed consolidated balance sheets. Gains and losses arising from transactions denominated in a currency different from an entity’s functional currency are included in ‘Foreign exchange and other (losses) gains’ in our condensed consolidated statements of income (loss).
Derivatives	Due to the global nature of our operations, we are exposed to foreign currency exchange rate fluctuations. In addition, due to certain loans with floating interest rates, we are also subject to the impact of changes in interest rates on our interest payments. We enter into foreign currency exchange rate (“FX”) derivative contracts and interest rate swap contracts to reduce the impact of foreign currency rate and interest rate fluctuations on earnings and cash flow. We measure all outstanding derivatives each period end at fair value and report the fair value as either financial assets or liabilities in the condensed consolidated balance sheets. We do not enter into derivative contracts for speculative purposes. At inception of the contract, the derivative is designated as either a freestanding derivative or a hedge. Derivatives that are not designated as hedging instruments are referred to as freestanding derivatives with changes in fair value included in earnings. If the derivative qualifies for hedge accounting, depending on the nature of the hedge and hedge effectiveness, changes in the fair value of the derivative will either be recognized immediately in earnings or recorded in other AOCI until the hedged item is recognized in earnings upon settlement/termination. FX derivative gains and losses in AOCI are reclassified to the consolidated statement of income (loss) as shown in the tables below and interest rate swap gains and losses in AOCI are reclassified to interest expense in the consolidated statement of income (loss). We evaluate hedge effectiveness at inception and on an ongoing basis. If a derivative is no longer expected to be highly effective, hedge accounting is discontinued. Hedge ineffectiveness, if any, is recorded in earnings. Cash flows from derivative contracts are reported as operating activities in the condensed consolidated statements of cash flows.
New Accounting Pronouncements	New Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued ASC Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers. Update No. 2014-09 requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers and will replace most existing revenue recognition guidance when it becomes effective. This new standard is effective for annual reporting periods beginning after December 15, 2017, and interim periods within that reporting period. The standard permits the use of either the retrospective or cumulative effect transition method. We will adopt the new standard under the cumulative effect transition method. Based on the Company’s evaluation performed to date, we believe the timing of revenue recognition for products and related revenue streams within our Neuromodulation and Cardiac Rhythm Management segments will not materially change. The Company continues to evaluate the impact of the new standard on the timing of when revenue will be recognized for equipment sales and certain services performed within our Cardiac Surgery segment specifically related to heart-lung machines and preventive maintenance contracts on cardiopulmonary equipment. Upon adoption of the new standard, we expect to implement new internal controls related to our accounting policies and procedures, including review controls to ensure contractual terms and conditions that may require consideration under the standard are properly identified and analyzed. During the fourth quarter of 2017, we expect to finalize our impact assessment and redesign impacted processes, policies and controls. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. Update 2016-01 requires equity investments that do not result in consolidation and are not accounted for under the equity method to be measured at fair value with changes recognized in net income. However, an entity may elect to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. The amendments, in addition, reduce complexity of the impairment assessment of equity investments without readily determinable fair values with regard to the other-than-temporary impairment guidance. The amendments also require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset and liability. This guidance is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early application of certain provisions is permitted. We are currently evaluating the effect this standard will have on our consolidated financial statements and related disclosures. In February 2016, the FASB issued ASU No. 2016-02, Leases. This guidance requires lessees to recognize most leases on their balance sheets as lease liabilities with corresponding right-of-use assets. While many aspects of lessor accounting remain the same, the new standard makes some changes, such as eliminating the current real estate-specific guidance. The new standard requires lessees and lessors to classify most leases using a principle generally consistent with that of “IAS 17 - Leases,” which is similar to U.S. GAAP but without the use of bright lines. The standard also changes what is considered initial direct costs. Entities are required to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements. The standard is effective for annual periods beginning after December 15, 2018 and interim periods within that year. Early adoption is permitted. We are currently evaluating the effect this standard will have on our consolidated financial statements and related disclosures. In March 2016, the FASB issued ASU No. 2016-09, Compensation—Stock Compensation: Improvements to Employee Share-Based Payment Accounting. This simplified the accounting for certain aspects of share-based payment transactions including the income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. We adopted the amendments of ASU 2016-09 (each “an Amendment”) effective January 1, 2017, using the following methods: We adopted the Amendment that requires all of the tax effects related to the settlement of share based compensation awards to be recorded through the income statement on a prospective basis. The adoption of this Amendment did not have a material effect on income tax expense for the nine months ended September 30, 2017. We adopted the Amendment related to cash flow presentation of tax-related cash flows resulting from share based payments on a prospective basis. The Amendment stipulates that all tax-related cash flows resulting from share based payments are to be reported as operating activities in the statement of cash flows, rather than, under past requirements, to present gross windfall tax benefits as an inflow from financing activities and an outflow from operating activities. Under the Amendment related to forfeitures, entities are permitted to make a company-wide accounting policy election to either estimate forfeitures each period, as required prior to this Amendment’s effective date, or to account for forfeitures as they occur. We elected to continue to account for forfeitures using the estimation method. We adopted the Amendment related to the timing of when excess tax benefits are recognized, which requires that all windfalls and shortfalls be recognized when they arise. There were no unrecognized excess tax benefits prior to the adoption of the Amendment. In August 2016, the FASB issued ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments (Topic 230 -Statement of Cash Flows). Update 2016-15 provides guidance on the presentation and classification of certain cash receipts and cash payments in the statement of cash flows including debt prepayment or debt extinguishment costs, settlement of zero-coupon debt instruments, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims, proceeds from the settlement of corporate-owned life insurance policies, and distributions received from equity method investees. The amendments are effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. The amendments should be applied using a retrospective transition method to each period presented. We are currently evaluating the effect this standard will have on our consolidated financial statements and related disclosures. In October 2016, the FASB issued ASU No. 2016-16, Income Taxes - Intra-Entity Transfers of Assets Other Than Inventory (Topic 740). This update simplifies the accounting for the income tax consequences of transfers of assets from one unit of a corporation to another unit or subsidiary by eliminating an accounting exception that prevents the recognition of current and deferred income tax consequences for such “intra-entity transfers” until the assets have been sold to an outside party. The amendment should be applied using a modified retrospective transition method by means of a cumulative-effect adjustment directly to retained earnings as of the beginning of the period in which the guidance is adopted. The rule is effective for annual periods after December 15, 2017, including interim periods within those annual reporting periods. We currently estimate the cumulative-effect reduction to retained earnings to be approximately $65.2 million upon adoption at January 1, 2018. In January 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other - Simplifying the Test for Goodwill Impairment (Topic 350). This update removes step 2 of the goodwill impairment test that compares the implied fair value of goodwill with its carrying amount. Instead, an impairment test is performed by comparing the fair value of a reporting unit with its carrying amount. An impairment charge will be recorded by the amount a reporting unit’s carrying amount exceeds its fair value. The rule is effective for annual periods after December 15, 2019, including interim periods within those annual reporting periods. We are currently evaluating the impact of adopting this update on our consolidated financial statements. In March 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805)—Clarifying the Definition of a Business. This update clarifies when a set of assets and activities is a business. The amendments provide a screen to determine when a set is not a business. The screen requires that when substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, the set is not a business. If the screen is not met, the amendments in this Update (1) require that to be considered a business, a set must include, at a minimum, an input and a substantive process that together significantly contribute to the ability to create output and (2) remove the evaluation of whether a market participant could replace missing elements. This update is effective for annual periods after December 15, 2017, including interim periods within those annual reporting periods. We are currently evaluating the impact of adopting this update on our consolidated financial statements. In March 2017, the FASB issued ASU No. 2017-07, Compensation—Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Post Retirement Benefit Cost. This update requires that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. If a separate line item or items are used to present the other components of net benefit cost, that line item or items must be appropriately described. If a separate line item or items are not used, the line item or items used in the income statement to present the other components of net benefit cost must be disclosed. The amendments in this Update also allow only the service cost component to be eligible for capitalization when applicable. This Update is effective for annual periods after December 15, 2017, including interim periods within those annual reporting periods. We are currently evaluating the impact of adopting this update on our consolidated financial statements.