Summary of significant accounting policies (Policies)	12 Months Ended
Dec. 31, 2020
Accounting Policies [Abstract]
Consolidation	Consolidation: The consolidated financial statements include the accounts of Teleflex Incorporated and its subsidiaries (referred to herein as “we,” “us,” “our” and “Teleflex"). Intercompany transactions are eliminated in consolidation. These consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America ("GAAP") and reflect management’s estimates and assumptions that affect the recorded amounts.
Use of estimates	Use of estimates: The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of net revenues and expenses during the reporting period. Actual results could differ from those estimates.
Cash and cash equivalents	Cash and cash equivalents: All highly liquid debt instruments with an original maturity of three months or less are classified as cash equivalents. The carrying value of cash equivalents approximates the current market value.
Accounts receivable	Accounts receivable: Accounts receivable represent amounts due from customers related to the sale of products and provision of services. Our allowance for credit losses is maintained for trade accounts receivable based on the expected collectability of accounts receivable, after considering our historical collection experience, the length of time an account is outstanding, the financial position of the customer, information provided by credit rating services in addition to new requirements under the accounting guidance, effective January 1, 2020, that includes the consideration of events or circumstances indicating historic collection rates may not be indicative of future collectability, for example, potential customer liquidity concerns resulting from COVID-19, that may impact the collectability of our receivables as well as our estimate of credit losses expected to be incurred over the life of our receivables.
Inventories	Inventories: Inventories are valued at the lower of cost or net realizable value. The cost of our inventories is determined using the average cost method. Elements of cost in inventory include raw materials, direct labor, and manufacturing overhead. In estimating net realizable value, we evaluate inventory for excess and obsolete quantities based on estimated usage and sales, among other factors.
Property, plant and equipment	Property, plant and equipment: Property, plant and equipment are stated at cost, net of accumulated depreciation. Costs incurred to develop internal-use computer software during the application development stage generally are capitalized. Costs of enhancements to internal-use computer software are capitalized, provided that these enhancements result in additional functionality. Other additions and those improvements which increase the capacity or lengthen the useful lives of the assets are also capitalized. Composite useful lives for categories of property, plant and equipment, which are depreciated on a straight-line basis, are as follows: buildings — 30 years; machinery and equipment — 3 to 15 years; computer equipment and software — 3 to 5 years. Leasehold improvements are depreciated over the lesser of the useful lives of the leasehold improvements or the remaining lease term. Repairs and maintenance costs are expensed as incurred.
Goodwill and other intangible assets	Goodwill and other intangible assets: Goodwill and other indefinite-lived intangible assets are not amortized but are tested for impairment annually during the fourth quarter or more frequently if events or changes in circumstances indicate that an impairment may exist. Impairment losses, if any, are included in income from operations. The goodwill impairment test is applied to each of our reporting units. For purposes of this assessment, a reporting unit is an operating segment, or a business one level below an operating segment (also known as a component) if discrete financial information is prepared for that business and regularly reviewed by segment management. However, separate components are aggregated as a single reporting unit if they have similar economic characteristics. In performing the goodwill impairment test, we may assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. Qualitative factors may include, but are not limited to, macroeconomic conditions, industry conditions, the competitive environment, changes in the market for our products and services, regulatory and political developments, and entity specific factors such as strategies and financial performance. If, after completing the qualitative assessment, we determine it is more likely than not that the fair value of a reporting unit is less than its carrying value, we proceed to a two-step quantitative impairment test, described below. Alternatively, we may elect to bypass the qualitative assessment and perform the two-step quantitative impairment test. The first step of the two-step impairment test is to compare the fair value of a reporting unit to its carrying value. If the reporting unit fair value exceeds the carrying value, there is no impairment. If the reporting unit carrying value exceeds the fair value, we would perform the second step of the goodwill impairment test, in which we would measure the amount of an impairment loss, if any, based on the amount by which the carrying value of goodwill exceeds its implied fair value. The implied fair value of goodwill is determined by deducting the fair value of a reporting unit's identifiable assets and liabilities from the fair value of the reporting unit as a whole, as if that reporting unit had just been acquired and the fair value of the individual assets acquired and liabilities assumed were being determined initially. We did not record a goodwill impairment charge for the year ended December 31, 2020. Our intangible assets consist of customer relationships, intellectual property, distribution rights, in-process research and development ("IPR&D"), trade names and non-competition agreements. We define IPR&D as the value of technology acquired for which the related projects have substance and are incomplete. IPR&D acquired in a business acquisition is recognized at fair value and is required be capitalized as an indefinite-lived intangible asset until completion of the IPR&D project or upon abandonment. Upon completion of the development project (generally when regulatory approval to market the product that utilizes the technology is obtained), an impairment assessment is performed prior to amortizing the asset over its estimated useful life. If the IPR&D projects are abandoned, the related IPR&D assets would be written off. We test our indefinite-lived intangible assets for impairment annually, or more frequently if events or changes in circumstances indicate that an impairment may have occurred. Similar to the goodwill impairment test process, we may elect to perform a qualitative assessment. If, after completing the qualitative assessment, we determine it is more likely than not that the fair value of the indefinite-lived intangible asset is greater than its carrying amount, the asset is not impaired. If we conclude it is more likely than not that the fair value of the indefinite-lived intangible asset is less than the carrying value, we then proceed to a quantitative impairment test, which consists of a comparison of the fair value of the intangible asset to its carrying amount. Intangible assets that do not have indefinite lives, consisting of intellectual property, customer relationships, distribution rights, certain trade names and non-competition agreements, are amortized over their estimated useful lives, which are as follows: intellectual property, 5 to 20 years; customer relationships, 8 to 27 years; distribution rights, 10 years; trade names, 5 to 30 years; non-competition agreements, 3 to 6 years. The weighted average remaining amortization period with respect to our intangible assets is approximately 15 years. We periodically evaluate the reasonableness of the useful lives of these assets. For the year ended December 31, 2020, intangible asset amortization expense of $84.4 million is included within costs of good sold. For the year ended December 31, 2019 and December 31, 2018, we reclassified intangible asset amortization expense of $82.6 million and $81.6 million, respectively, from selling, general and administrative expenses to cost of goods sold for comparability.
Long-lived assets	Long-lived assets: We assess the remaining useful life and recoverability of long-lived assets whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable. The assessment is based on various analyses, including undiscounted cash flow and profitability projections that incorporate, as applicable, the impact of the asset on the existing business. Therefore, the evaluation involves significant management judgment. Any impairment loss, if indicated, is measured as the amount by which the carrying amount of the asset exceeds the estimated fair value of the asset.
Foreign currency translation	Foreign currency translation: Assets and liabilities of subsidiaries with non-United States dollar denominated functional currencies are translated into United States dollars at the rates of exchange at the balance sheet date; income and expenses are translated at the average rates of exchange prevailing during the year. The translation adjustments are reported as a component of accumulated other comprehensive loss.
Derivative financial instruments	Derivative financial instruments: We use derivative financial instruments primarily for purposes of hedging exposures to fluctuations in foreign currency exchange rates. All instruments are entered into for other than trading purposes. All derivatives are recognized on the balance sheet at fair value. Changes in the fair value of derivatives are recorded in the consolidated statement of comprehensive income as other comprehensive income (loss), if the instrument is designated as part of a hedge transaction. Gains or losses on derivative instruments reported in other comprehensive income (loss) are reclassified to the consolidated statement of income in the period in which earnings are affected by the underlying hedged item. Gains or losses on derivative instruments representing hedge ineffectiveness or hedge components excluded from the assessment of effectiveness, if any, are recognized in the consolidated statement of income for the period in which such gains and losses occur. If the hedging relationship ceases to be highly effective or it becomes probable that an expected transaction will no longer occur, gains or losses on the derivative instrument are recorded in the consolidated statement of income for the period in which either such event occurs. For non-designated derivatives, gains and losses are reported as selling, general and administrative expenses in the consolidated statement of income. Cash flows from derivatives are recognized in the consolidated statements of cash flows in a manner consistent with recognition of the underlying transactions.
Share-based compensation	Share-based compensation: We estimate the fair value of share-based awards on the date of grant using an option pricing model. The value of the portion of the award that is ultimately expected to vest, which is derived, in part, following consideration of estimated forfeitures, is recognized as expense over the requisite service periods. Share-based compensation expense related to stock options is measured using a Black-Scholes option pricing model that takes into account subjective and complex assumptions with respect to the expected life of the options, volatility, risk-free interest rate and expected dividend yield. The expected life of options granted is derived from the vesting period of the award, as well as historical exercise behavior, and represents the period of time that options granted are expected to be outstanding. Expected volatility is based on a blend of historical volatility and implied volatility derived from publicly traded options to purchase our common stock, which we believe is more reflective of market conditions and a better indicator of expected volatility than would be the case if we only used historical volatility. The risk-free interest rate is the implied yield currently available on United States (or "U.S.") Treasury zero-coupon issues with a remaining term equal to the expected life of the option. Forfeitures are estimated at the time of grant based on management’s expectations regarding the extent to which awards ultimately will vest and are adjusted for actual forfeitures when they occur.
Income taxes	Income taxes: The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, deferred tax assets and liabilities are recognized to reflect the future tax consequences attributable to the differences between the financial statement carrying amounts of existing assets and liabilities and their tax bases, and to reflect operating loss and tax credit carryforwards. The provision for income taxes represents income taxes paid or payable for the current year plus the change in deferred taxes during the year. Provision has been made for income taxes on unremitted earnings of subsidiaries and affiliates, except to the extent that such earnings are deemed to be permanently reinvested. Significant judgment is required in determining income tax provisions and in evaluating tax positions. We establish additional provisions for income taxes when, despite the belief that tax positions are supportable, there remain certain positions that do not meet the minimum probability threshold, which is a tax position that is more likely than not to be sustained upon examination by the applicable taxing authority. In the normal course of business, we are examined by various federal, state and non-U.S. tax authorities. We regularly assess the potential outcomes of these examinations and any future examinations for the current or prior years in determining the adequacy of its provision for income taxes. Interest accrued with respect to unrecognized tax benefits and income tax related penalties are both included in taxes on income from continuing operations. We periodically assess the likelihood and amount of potential adjustments and adjusts the income tax provision, the current tax liability and deferred taxes in the period in which the facts that give rise to an adjustment become known.
Pensions and other postretirement benefits	Pensions and other postretirement benefits: We provide a range of benefits to eligible employees and retired employees, including benefits available pursuant to pension and postretirement healthcare benefits plans. We record annual amounts relating to these plans based on calculations which include various actuarial assumptions such as discount rates, expected rates of return on plan assets, compensation increases, turnover rates and healthcare cost trend rates. We review our actuarial assumptions on an annual basis and makes modifications to the assumptions based on current rates and trends when appropriate. The effect of the modifications is generally amortized over future periods.
Restructuring costs	Restructuring costs: Restructuring costs, which include termination benefits, facility closure costs, contract termination costs and other restructuring costs, are recorded at estimated fair value. Other restructuring costs may include facility closure, employee relocation, equipment relocation and outplacement costs. We primarily recognize employee termination benefits when payment becomes probable and reasonably estimable because they are provided under an ongoing benefit arrangement and are based on existing plans, historical experiences and negotiated settlements of prior plans. Termination benefits provided under one-time termination benefits arrangements are recognized upon communication to the employee. We recognize charges ratably over the future service period if the employee is required to render service until termination. Key assumptions used in calculating the restructuring costs include the terms of, and payments under, agreements to terminate certain contractual obligations and the timing of reductions in force.
Contingent consideration related to business acquisitions	Contingent consideration related to business acquisitions: In connection with business acquisitions, we may be required to pay future consideration that is contingent upon the achievement of specified objectives such as receipt of regulatory approval, commercialization of a product or achievement of sales targets. As of the acquisition date, we record a contingent liability representing the estimated fair value of the contingent consideration that we expect to pay. We remeasure the fair value of our contingent consideration arrangements each reporting period and, based on new developments, records changes in fair value until either the contingent consideration obligation is satisfied through payment upon the achievement of, or the obligation no longer exists due to the failure to achieve, the specified objectives. The change in the fair value is recorded in selling, general and administrative expenses in the consolidated statement of income. A contingent consideration payment is classified as a financing activity in the consolidated statement of cash flows to the extent it was recorded as a liability as of the acquisition date. Any additional amount paid in excess of the amount initially accrued is classified as an operating activity in the consolidated statement of cash flows.
Revenue recognition	Revenue recognition: We primarily generate revenue from the sale of medical devices including single use disposable devices and, to a lesser extent, reusable devices, instruments and capital equipment. Revenue is recognized when obligations under the terms of a contract with our customer are satisfied; this occurs upon the transfer of control of the products. Generally, transfer of control to the customer occurs at the point in time when our products are shipped from the manufacturing or distribution facility. For the OEM segment, most revenue is recognized over time because the OEM segment generates revenue from the sale of custom products that have no alternative use and we have an enforceable right to payment to the extent that performance has been completed. We market and sell products through our direct sales force and distributors to customers within the following end markets: (1) hospitals and healthcare providers; (2) other medical device manufacturers; and (3) home care providers, which represented 88%, 9% and 3% of our consolidated net revenues, respectively, for the year ended December 31, 2020. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods. With respect to the custom products sold in the OEM segment, revenue is measured using the units produced output method. Payment is generally due 30 days from the date of invoice. We have made the following revenue accounting policy elections and elected to use certain practical expedients: (1) we account for amounts collected from customers for sales and other taxes, net of related amounts remitted to tax authorities; (2) we do not adjust the promised amount of consideration for the effects of a significant financing component because, at contract inception, we expect the period between the time when we transfer a promised good or service to the customer and the time when the customer pays for that good or service will be one year or less; (3) we expense costs to obtain a contract as they are incurred if the expected period of benefit, and therefore the amortization period, is one year or less; (4) we account for shipping and handling activities that occur after control transfers to the customer as a fulfillment cost rather than an additional promised service; (5) we classify shipping and handling costs within cost of goods sold; and (6) with respect to the OEM segment, we have applied the practical expedient to exclude disclosure of remaining performance obligations as the contracts typically have a term of one year or less. The amount of consideration we receive and revenue we recognize varies as a result of changes in customer sales incentives, including discounts and rebates, and returns offered to customers. The estimate of revenue is adjusted upon the earlier of the following events: (i) the most likely amount of consideration expected to be received changes or (ii) the consideration becomes fixed. Our policy is to accept returns only in cases in which the product is defective and covered under our standard warranty provisions. When we give customers the right to return products, we estimate the expected returns based on an analysis of historical experience. The liability for returns and allowances was $14.6 million and $7.2 million as of December 31, 2020 and 2019, respectively. In estimating customer rebates, we consider the lag time between the point of sale and the payment of the customer’s rebate claim, customer-specific trend analyses, contractual commitments, including stated rebate rates, historical experience with respect to specific customers (as we have a history of providing similar rebates on similar products to similar customers) and other relevant information. The reserve for customer incentive programs, including customer rebates, was $28.5 million and $21.6 million at December 31, 2020 and 2019, respectively. We expect the amounts subject to the reserve as of December 31, 2020 to be paid within 90 days subsequent to period-end.
Leases	Leases: On January 1, 2019, we adopted an amendment to the guidance on leases using a modified retrospective transition approach. We have made an accounting policy election not to apply the lease accounting recognition provisions to short term leases (leases with a lease term of 12 months or less that do not include an option to purchase the underlying asset that the lessee is reasonably certain to exercise); instead, we will recognize the lease payments for short term leases on a straight-line basis over the lease term. We have made, as a practical expedient, an accounting policy election to not separate lease and non-lease components and instead will account for each separate lease component and the non-lease components associated with that lease component as a single lease component.
Recently issued accounting standards	Recently issued accounting standards In June 2016, the FASB issued new guidance that changes the methodology to be used to measure credit losses for certain financial instruments and financial assets, including trade receivables. Under current guidance, an entity reflects credit losses on financial assets measured on an amortized cost basis only when it is probable that losses have been incurred, generally considering only past events and current conditions in determining incurred loss. The new guidance requires the recognition of an allowance that reflects the current estimate of credit losses expected to be incurred over the life of the financial asset, based not only on historical experience and current conditions, but also on reasonable forecasts. The main objective of the new guidance is to provide financial statement users with more useful information in making decisions about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. We adopted the new standard on January 1, 2020 using a modified retrospective transition approach by recognizing a cumulative-effect adjustment of $0.8 million to reduce our opening balance of retained earnings as of the adoption date. Prior period amounts have not been adjusted and continue to reflect our historical accounting. In December 2019, the FASB issued new guidance that simplifies various aspects of accounting for income taxes including those related to the step-up in the tax basis of goodwill, intraperiod tax allocations and the interim period effects of changes in tax laws or rates. The new guidance is effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. Early adoption is permitted. The majority of the modifications under the new guidance will be applied on a modified retrospective basis through a cumulative-effect adjustment to retained earnings on January 1, 2021. The adoption of the guidance did not have a material impact on the consolidated financial statements. In January 2017, the FASB issued guidance to simplify the quantitative test for goodwill impairment. Under current guidance, if a reporting unit’s carrying value exceeds its fair value, the entity must determine the implied value of goodwill. This determination is made by deducting the fair value of a reporting unit’s identifiable assets and liabilities from the fair value of the reporting unit as a whole as if the reporting unit had just been acquired. Under the new guidance, a determination of the implied value of goodwill will no longer be required; a goodwill impairment will be equal to the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. We adopted this guidance on January 1, 2020 and will apply it, as applicable, to impairment testing we perform in 2020 and future years. The adoption of the guidance did not have an impact on the consolidated financial statements. From time to time, new accounting guidance issued by the FASB or other standard setting bodies is adopted as of the specified effective date or, when permitted by the guidance and as determined by us, as of an earlier date. We have assessed recently issued guidance that is not yet effective, except as noted above, and believe the new guidance that we have assessed will not have a material impact on our results of operations, cash flows or financial position.

Summary of significant accounting policies (Policies)

12 Months Ended

Dec. 31, 2020

Consolidation: The consolidated financial statements include the accounts of Teleflex Incorporated and its subsidiaries (referred to herein as “we,” “us,” “our” and “Teleflex"). Intercompany transactions are eliminated in consolidation. These consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America ("GAAP") and reflect management’s estimates and assumptions that affect the recorded amounts.

Use of estimates

Use of estimates: The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of net revenues and expenses during the reporting period. Actual results could differ from those estimates.

Cash and cash equivalents

Cash and cash equivalents: All highly liquid debt instruments with an original maturity of three months or less are classified as cash equivalents. The carrying value of cash equivalents approximates the current market value.

Accounts receivable

Accounts receivable: Accounts receivable represent amounts due from customers related to the sale of products and provision of services. Our allowance for credit losses is maintained for trade accounts receivable based on the expected collectability of accounts receivable, after considering our historical collection experience, the length of time an account is outstanding, the financial position of the customer, information provided by credit rating services in addition to new requirements under the accounting guidance, effective January 1, 2020, that includes the consideration of events or circumstances indicating historic collection rates may not be indicative of future collectability, for example, potential customer liquidity concerns resulting from COVID-19, that may impact the collectability of our receivables as well as our estimate of credit losses expected to be incurred over the life of our receivables.

Inventories

Inventories: Inventories are valued at the lower of cost or net realizable value. The cost of our inventories is determined using the average cost method. Elements of cost in inventory include raw materials, direct labor, and manufacturing overhead. In estimating net realizable value, we evaluate inventory for excess and obsolete quantities based on estimated usage and sales, among other factors.

Property, plant and equipment

Property, plant and equipment: Property, plant and equipment are stated at cost, net of accumulated depreciation. Costs incurred to develop internal-use computer software during the application development stage generally are capitalized. Costs of enhancements to internal-use computer software are capitalized, provided that these enhancements result in additional functionality. Other additions and those improvements which increase the capacity or lengthen the useful lives of the assets are also capitalized. Composite useful lives for categories of property, plant and equipment, which are depreciated on a straight-line basis, are as follows: buildings — 30 years; machinery and equipment — 3 to 15 years; computer equipment and software — 3 to 5 years. Leasehold improvements are depreciated over the lesser of the useful lives of the leasehold improvements or the remaining lease term. Repairs and maintenance costs are expensed as incurred.

Goodwill and other intangible assets

Goodwill and other intangible assets: Goodwill and other indefinite-lived intangible assets are not amortized but are tested for impairment annually during the fourth quarter or more frequently if events or changes in circumstances indicate that an impairment may exist. Impairment losses, if any, are included in income from operations. The goodwill impairment test is applied to each of our reporting units. For purposes of this assessment, a reporting unit is an operating segment, or a business one level below an operating segment (also known as a component) if discrete financial information is prepared for that business and regularly reviewed by segment management. However, separate components are aggregated as a single reporting unit if they have similar economic characteristics.

In performing the goodwill impairment test, we may assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. Qualitative factors may include, but are not limited to, macroeconomic conditions, industry conditions, the competitive environment, changes in the market for our products and services, regulatory and political developments, and entity specific factors such as

strategies and financial performance. If, after completing the qualitative assessment, we determine it is more likely than not that the fair value of a reporting unit is less than its carrying value, we proceed to a two-step quantitative impairment test, described below. Alternatively, we may elect to bypass the qualitative assessment and perform the two-step quantitative impairment test. The first step of the two-step impairment test is to compare the fair value of a reporting unit to its carrying value. If the reporting unit fair value exceeds the carrying value, there is no impairment. If the reporting unit carrying value exceeds the fair value, we would perform the second step of the goodwill impairment test, in which we would measure the amount of an impairment loss, if any, based on the amount by which the carrying value of goodwill exceeds its implied fair value. The implied fair value of goodwill is determined by deducting the fair value of a reporting unit's identifiable assets and liabilities from the fair value of the reporting unit as a whole, as if that reporting unit had just been acquired and the fair value of the individual assets acquired and liabilities assumed were being determined initially. We did not record a goodwill impairment charge for the year ended December 31, 2020.

Our intangible assets consist of customer relationships, intellectual property, distribution rights, in-process research and development ("IPR&D"), trade names and non-competition agreements. We define IPR&D as the value of technology acquired for which the related projects have substance and are incomplete. IPR&D acquired in a business acquisition is recognized at fair value and is required be capitalized as an indefinite-lived intangible asset until completion of the IPR&D project or upon abandonment. Upon completion of the development project (generally when regulatory approval to market the product that utilizes the technology is obtained), an impairment assessment is performed prior to amortizing the asset over its estimated useful life. If the IPR&D projects are abandoned, the related IPR&D assets would be written off.

We test our indefinite-lived intangible assets for impairment annually, or more frequently if events or changes in circumstances indicate that an impairment may have occurred. Similar to the goodwill impairment test process, we may elect to perform a qualitative assessment. If, after completing the qualitative assessment, we determine it is more likely than not that the fair value of the indefinite-lived intangible asset is greater than its carrying amount, the asset is not impaired. If we conclude it is more likely than not that the fair value of the indefinite-lived intangible asset is less than the carrying value, we then proceed to a quantitative impairment test, which consists of a comparison of the fair value of the intangible asset to its carrying amount.

Intangible assets that do not have indefinite lives, consisting of intellectual property, customer relationships, distribution rights, certain trade names and non-competition agreements, are amortized over their estimated useful lives, which are as follows: intellectual property, 5 to 20 years; customer relationships, 8 to 27 years; distribution rights, 10 years; trade names, 5 to 30 years; non-competition agreements, 3 to 6 years. The weighted average remaining amortization period with respect to our intangible assets is approximately 15 years. We periodically evaluate the reasonableness of the useful lives of these assets.

For the year ended December 31, 2020, intangible asset amortization expense of $84.4 million is included within costs of good sold. For the year ended December 31, 2019 and December 31, 2018, we reclassified intangible asset amortization expense of $82.6 million and $81.6 million, respectively, from selling, general and administrative expenses to cost of goods sold for comparability.

Long-lived assets

Long-lived assets: We assess the remaining useful life and recoverability of long-lived assets whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable. The assessment is based on various analyses, including undiscounted cash flow and profitability projections that incorporate, as applicable, the impact of the asset on the existing business. Therefore, the evaluation involves significant management judgment. Any impairment loss, if indicated, is measured as the amount by which the carrying amount of the asset exceeds the estimated fair value of the asset.

Foreign currency translation

Foreign currency translation: Assets and liabilities of subsidiaries with non-United States dollar denominated functional currencies are translated into United States dollars at the rates of exchange at the balance sheet date; income and expenses are translated at the average rates of exchange prevailing during the year. The translation adjustments are reported as a component of accumulated other comprehensive loss.

Derivative financial instruments

Derivative financial instruments: We use derivative financial instruments primarily for purposes of hedging exposures to fluctuations in foreign currency exchange rates. All instruments are entered into for other than trading purposes. All derivatives are recognized on the balance sheet at fair value. Changes in the fair value of derivatives are recorded in the consolidated statement of comprehensive income as other comprehensive income (loss), if the instrument is designated as part of a hedge transaction. Gains or losses on derivative instruments reported in other comprehensive income (loss) are reclassified to the consolidated statement of income in the period in which earnings are affected by the underlying hedged item. Gains or losses on derivative instruments representing hedge ineffectiveness or hedge components excluded from the assessment of effectiveness, if any, are recognized in the consolidated statement of income for the period in which such gains and losses occur. If the hedging relationship ceases to be highly effective or it becomes probable that an expected transaction will no longer occur, gains or losses on the derivative instrument are recorded in the consolidated statement of income for the period in which either such event occurs. For non-designated derivatives, gains and losses are reported as selling, general and administrative expenses in the consolidated statement of income. Cash flows from derivatives are recognized in the consolidated statements of cash flows in a manner consistent with recognition of the underlying transactions.

Share-based compensation

Share-based compensation: We estimate the fair value of share-based awards on the date of grant using an option pricing model. The value of the portion of the award that is ultimately expected to vest, which is derived, in part, following consideration of estimated forfeitures, is recognized as expense over the requisite service periods. Share-based compensation expense related to stock options is measured using a Black-Scholes option pricing model that takes into account subjective and complex assumptions with respect to the expected life of the options, volatility, risk-free interest rate and expected dividend yield. The expected life of options granted is derived from the vesting period of the award, as well as historical exercise behavior, and represents the period of time that options granted are expected to be outstanding. Expected volatility is based on a blend of historical volatility and implied volatility derived from publicly traded options to purchase our common stock, which we believe is more reflective of market conditions and a better indicator of expected volatility than would be the case if we only used historical volatility. The risk-free interest rate is the implied yield currently available on United States (or "U.S.") Treasury zero-coupon issues with a remaining term equal to the expected life of the option. Forfeitures are estimated at the time of grant based on management’s expectations regarding the extent to which awards ultimately will vest and are adjusted for actual forfeitures when they occur.

Income taxes

Income taxes: The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, deferred tax assets and liabilities are recognized to reflect the future tax consequences attributable to the differences between the financial statement carrying amounts of existing assets and liabilities and their tax bases, and to reflect operating loss and tax credit carryforwards. The provision for income taxes represents income taxes paid or payable for the current year plus the change in deferred taxes during the year. Provision has been made for income taxes on unremitted earnings of subsidiaries and affiliates, except to the extent that such earnings are deemed to be permanently reinvested.

Significant judgment is required in determining income tax provisions and in evaluating tax positions. We establish additional provisions for income taxes when, despite the belief that tax positions are supportable, there remain certain positions that do not meet the minimum probability threshold, which is a tax position that is more likely than not to be sustained upon examination by the applicable taxing authority. In the normal course of business, we are examined by various federal, state and non-U.S. tax authorities. We regularly assess the potential outcomes of these examinations and any future examinations for the current or prior years in determining the adequacy of its provision for income taxes. Interest accrued with respect to unrecognized tax benefits and income tax related penalties are both included in taxes on income from continuing operations. We periodically assess the likelihood and amount of potential adjustments and adjusts the income tax provision, the current tax liability and deferred taxes in the period in which the facts that give rise to an adjustment become known.

Pensions and other postretirement benefits

Pensions and other postretirement benefits: We provide a range of benefits to eligible employees and retired employees, including benefits available pursuant to pension and postretirement healthcare benefits plans. We record annual amounts relating to these plans based on calculations which include various actuarial assumptions such as discount rates, expected rates of return on plan assets, compensation increases, turnover rates and healthcare cost trend rates. We review our actuarial assumptions on an annual basis and makes modifications to the assumptions based on current rates and trends when appropriate. The effect of the modifications is generally amortized over future periods.

Restructuring costs

Restructuring costs: Restructuring costs, which include termination benefits, facility closure costs, contract termination costs and other restructuring costs, are recorded at estimated fair value. Other restructuring costs may include facility closure, employee relocation, equipment relocation and outplacement costs. We primarily recognize employee termination benefits when payment becomes probable and reasonably estimable because they are provided under an ongoing benefit arrangement and are based on existing plans, historical experiences and negotiated settlements of prior plans. Termination benefits provided under one-time termination benefits arrangements are recognized upon communication to the employee. We recognize charges ratably over the future service period if the employee is required to render service until termination. Key assumptions used in calculating the restructuring costs include the terms of, and payments under, agreements to terminate certain contractual obligations and the timing of reductions in force.

Contingent consideration related to business acquisitions

Contingent consideration related to business acquisitions: In connection with business acquisitions, we may be required to pay future consideration that is contingent upon the achievement of specified objectives such as receipt of regulatory approval, commercialization of a product or achievement of sales targets. As of the acquisition date, we record a contingent liability representing the estimated fair value of the contingent consideration that we expect to pay. We remeasure the fair value of our contingent consideration arrangements each reporting period and, based on new developments, records changes in fair value until either the contingent consideration obligation is satisfied through payment upon the achievement of, or the obligation no longer exists due to the failure to achieve, the specified objectives. The change in the fair value is recorded in selling, general and administrative expenses in the consolidated statement of income. A contingent consideration payment is classified as a financing activity in the consolidated statement of cash flows to the extent it was recorded as a liability as of the acquisition date. Any additional amount paid in excess of the amount initially accrued is classified as an operating activity in the consolidated statement of cash flows.

Revenue recognition

Revenue recognition: We primarily generate revenue from the sale of medical devices including single use disposable devices and, to a lesser extent, reusable devices, instruments and capital equipment. Revenue is recognized when obligations under the terms of a contract with our customer are satisfied; this occurs upon the transfer of control of the products. Generally, transfer of control to the customer occurs at the point in time when our products are shipped from the manufacturing or distribution facility. For the OEM segment, most revenue is recognized over time because the OEM segment generates revenue from the sale of custom products that have no alternative use and we have an enforceable right to payment to the extent that performance has been completed. We market and sell products through our direct sales force and distributors to customers within the following end markets: (1) hospitals and healthcare providers; (2) other medical device manufacturers; and (3) home care providers, which represented 88%, 9% and 3% of our consolidated net revenues, respectively, for the year ended December 31, 2020. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods. With respect to the custom products sold in the OEM segment, revenue is measured using the units produced output method. Payment is generally due 30 days from the date of invoice.

We have made the following revenue accounting policy elections and elected to use certain practical expedients: (1) we account for amounts collected from customers for sales and other taxes, net of related amounts remitted to tax authorities; (2) we do not adjust the promised amount of consideration for the effects of a significant financing component because, at contract inception, we expect the period between the time when we transfer a promised good or service to the customer and the time when the customer pays for that good or service will be one year or less; (3) we expense costs to obtain a contract as they are incurred if the expected period of benefit, and therefore the amortization period, is one year or less; (4) we account for shipping and handling activities that occur after control transfers to the customer as a fulfillment cost rather than an additional promised service; (5) we classify shipping and handling costs within cost of goods sold; and (6) with respect to the OEM segment, we have applied the practical expedient to exclude disclosure of remaining performance obligations as the contracts typically have a term of one year or less.

The amount of consideration we receive and revenue we recognize varies as a result of changes in customer sales incentives, including discounts and rebates, and returns offered to customers. The estimate of revenue is adjusted upon the earlier of the following events: (i) the most likely amount of consideration expected to be received changes or (ii) the consideration becomes fixed. Our policy is to accept returns only in cases in which the product is defective and covered under our standard warranty provisions. When we give customers the right to return products, we estimate the expected returns based on an analysis of historical experience. The liability for returns and allowances was $14.6 million and $7.2 million as of December 31, 2020 and 2019, respectively. In estimating customer rebates, we consider the lag time between the point of sale and the payment of the customer’s rebate claim, customer-specific trend analyses, contractual commitments, including stated rebate rates, historical experience with respect to specific customers (as we have a history of providing similar rebates on similar products to similar customers) and other relevant information. The reserve for customer incentive programs, including customer rebates, was $28.5 million and $21.6 million at December 31, 2020 and 2019, respectively. We expect the amounts subject to the reserve as of December 31, 2020 to be paid within 90 days subsequent to period-end.

Leases

Leases: On January 1, 2019, we adopted an amendment to the guidance on leases using a modified retrospective transition approach. We have made an accounting policy election not to apply the lease accounting recognition provisions to short term leases (leases with a lease term of 12 months or less that do not include an option to purchase the underlying asset that the lessee is reasonably certain to exercise); instead, we will recognize the lease payments for short term leases on a straight-line basis over the lease term. We have made, as a practical expedient, an accounting policy election to not separate lease and non-lease components and instead will account for each separate lease component and the non-lease components associated with that lease component as a single lease component.

Recently issued accounting standards

In June 2016, the FASB issued new guidance that changes the methodology to be used to measure credit losses for certain financial instruments and financial assets, including trade receivables. Under current guidance, an entity reflects credit losses on financial assets measured on an amortized cost basis only when it is probable that losses have been incurred, generally considering only past events and current conditions in determining incurred loss. The new guidance requires the recognition of an allowance that reflects the current estimate of credit losses expected to be incurred over the life of the financial asset, based not only on historical experience and current conditions, but also on reasonable forecasts. The main objective of the new guidance is to provide financial statement users with more useful information in making decisions about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. We adopted the new standard on January 1, 2020 using a modified retrospective transition approach by recognizing a cumulative-effect adjustment of $0.8 million to reduce our opening balance of retained earnings as of the adoption date. Prior period amounts have not been adjusted and continue to reflect our historical accounting.

In December 2019, the FASB issued new guidance that simplifies various aspects of accounting for income taxes including those related to the step-up in the tax basis of goodwill, intraperiod tax allocations and the interim period effects of changes in tax laws or rates. The new guidance is effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. Early adoption is permitted. The majority of the modifications under the new guidance will be applied on a modified retrospective basis through a cumulative-effect adjustment to retained earnings on January 1, 2021. The adoption of the guidance did not have a material impact on the consolidated financial statements.

In January 2017, the FASB issued guidance to simplify the quantitative test for goodwill impairment. Under current guidance, if a reporting unit’s carrying value exceeds its fair value, the entity must determine the implied value of goodwill. This determination is made by deducting the fair value of a reporting unit’s identifiable assets and liabilities from the fair value of the reporting unit as a whole as if the reporting unit had just been acquired. Under the new guidance, a determination of the implied value of goodwill will no longer be required; a goodwill impairment will be equal to the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. We adopted this guidance on January 1, 2020 and will apply it, as applicable, to impairment testing we perform in 2020 and future years. The adoption of the guidance did not have an impact on the consolidated financial statements.

From time to time, new accounting guidance issued by the FASB or other standard setting bodies is adopted as of the specified effective date or, when permitted by the guidance and as determined by us, as of an earlier date. We have assessed recently issued guidance that is not yet effective, except as noted above, and believe the new guidance that we have assessed will not have a material impact on our results of operations, cash flows or financial position.