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Significant Accounting Policies (Policies)
12 Months Ended
Dec. 31, 2018
Accounting Policies [Abstract]  
Basis of Presentation

Basis of Presentation - The consolidated financial statements include the accounts of Zimmer Biomet Holdings and its subsidiaries in which it holds a controlling financial interest.  All significant intercompany accounts and transactions are eliminated.  

Use of Estimates

Use of Estimates - The consolidated financial statements are prepared in conformity with accounting principles generally accepted in the U.S. which require us 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 revenues and expenses during the reporting period.  Actual results could differ from those estimates.

Foreign Currency Translation

Foreign Currency Translation - The financial statements of our foreign subsidiaries are translated into U.S. Dollars using period-end exchange rates for assets and liabilities and average exchange rates for operating results.  Unrealized translation gains and losses are included in accumulated other comprehensive loss in stockholders’ equity.  When a transaction is denominated in a currency other than the subsidiary’s functional currency, we recognize a transaction gain or loss when the transaction is settled.  Foreign currency transaction gains and losses included in net earnings for the years ended December 31, 2018, 2017 and 2016 were not significant.

Shipping and Handling

Shipping and Handling - Amounts billed to customers for shipping and handling of products are reflected in net sales and are not significant.  Expenses incurred related to shipping and handling of products are reflected in SG&A expenses and were $290.2 million, $263.6 million and $231.7 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Research and Development

Research and Development - We expense all research and development (“R&D”) costs as incurred except when there is alternative future use for the R&D.  R&D costs include salaries, prototypes, depreciation of equipment used in R&D, consultant fees and service fees paid to collaborative partners.  Where contingent milestone payments are due to third parties under R&D arrangements, the milestone payment obligations are expensed when the milestone results are achieved.

Litigation

Litigation - We record a liability for contingent losses, including future legal costs, settlements and judgments, when we consider it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated.

Acquisition, Integration and Related

Acquisition, integration and related – We use the financial statement line item, “Acquisition, integration and related” to recognize expenses resulting from the consummation of business mergers and acquisitions and the related integration of those businesses.  Acquisition, integration and related expenses are primarily composed of:

 

Consulting and professional fees related to third-party integration consulting performed in a variety of areas, such as tax, compliance, logistics and human resources, and legal fees related to the consummation of mergers and acquisitions.  

 

Employee termination benefits related to terminating employees with overlapping responsibilities in various areas of our business.  

 

Dedicated project personnel expenses which include the salary, benefits, travel expenses and other costs directly associated with employees who are 100 percent dedicated to our integration of acquired businesses and employees who have been notified of termination, but are continuing to work on transferring their responsibilities.  

 

Contract termination expenses related to terminated contracts, primarily with sales agents and distribution agreements.  

 

Other various expenses to relocate facilities, integrate information technology, losses incurred on assets resulting from the applicable acquisition, and other various expenses.

Quality Remediation

Quality remediation - We use the financial statement line item “Quality remediation” to recognize expenses related to addressing inspectional observations on Form 483 and a warning letter issued by the FDA following its inspections of our Warsaw North Campus facility, among other matters.  See Note 19 for additional information about the Form 483 and warning letter.  The majority of these expenses are related to consultants who are helping us to update previous documents and redesign certain processes.

Cash and Cash Equivalents

Cash and Cash Equivalents - We consider all highly liquid investments with an original maturity of three months or less to be cash equivalents.  The carrying amounts reported in the balance sheet for cash and cash equivalents are valued at cost, which approximates their fair value.

Accounts Receivable

Accounts Receivable - Accounts receivable consists of trade and other miscellaneous receivables.  We grant credit to customers in the normal course of business and maintain an allowance for doubtful accounts for potential credit losses.  We determine the allowance for doubtful accounts by geographic market and take into consideration historical credit experience, creditworthiness of the customer and other pertinent information.  We make concerted efforts to collect all accounts receivable, but sometimes we have to write-off the account against the allowance when we determine the account is uncollectible.  The allowance for doubtful accounts was $65.7 million and $60.2 million as of December 31, 2018 and 2017, respectively.  

We also have receivables purchase arrangements with unrelated third parties to transfer portions of our trade accounts receivable balance.  Funds received from the transfers are recorded as an increase to cash and a reduction to accounts receivable outstanding in our consolidated balance sheets. We report the cash flows attributable to the sale of receivables to third parties in cash flows from operating activities in our consolidated statements of cash flows. Net expenses resulting from the sales of receivables are recognized in SG&A expense. Net expenses include any resulting gains or losses from the sales of receivables, credit insurance and factoring fees.  Any collections that we make that are unremitted to the third parties are recognized on our consolidated balance sheets under other current liabilities and in our consolidated statements of cash flows in financing activities.  

Inventories

Inventories - Inventories are stated at the lower of cost or market, with cost determined on a first-in first-out basis.

Property, Plant and Equipment

Property, Plant and Equipment - Property, plant and equipment is carried at cost less accumulated depreciation.  Depreciation is computed using the straight-line method based on estimated useful lives of ten to forty years for buildings and improvements and three to eight years for machinery and equipment.  Maintenance and repairs are expensed as incurred.  We review property, plant and equipment for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable.  An impairment loss would be recognized when estimated future undiscounted cash flows relating to the asset are less than its carrying amount.  An impairment loss is measured as the amount by which the carrying amount of an asset exceeds its fair value.

Software Costs

Software Costs - We capitalize certain computer software and software development costs incurred in connection with developing or obtaining computer software for internal use when both the preliminary project stage is completed and it is probable that the software will be used as intended.  Capitalized software costs generally include external direct costs of materials and services utilized in developing or obtaining computer software and compensation and related benefits for employees who are directly associated with the software project.  Capitalized software costs are included in property, plant and equipment on our balance sheet and amortized on a straight-line or weighted average estimated user basis when the software is ready for its intended use over the estimated useful lives of the software, which approximate three to fifteen years.

Instruments

Instruments - Instruments are hand-held devices used by surgeons during total joint replacement and other surgical procedures.  Instruments are recognized as long-lived assets and are included in property, plant and equipment.  Undeployed instruments are carried at cost or realizable value.  Instruments that have been deployed to be used in surgeries are carried at cost less accumulated depreciation.  Depreciation is computed using the straight-line method based on average estimated useful lives, determined principally in reference to associated product life cycles, primarily five years.  We review instruments for impairment whenever events or changes in circumstances indicate that the carrying value of an instrument may not be recoverable.  Depreciation of instruments is recognized as SG&A expense.

Goodwill

Goodwill - Goodwill is not amortized but is subject to annual impairment tests.  Goodwill has been assigned to reporting units.  We perform annual impairment tests by either comparing a reporting unit’s estimated fair value to its carrying amount or doing a qualitative assessment of a reporting unit’s fair value from the last quantitative assessment to determine if there is potential impairment.  We may do a qualitative assessment when the results of the previous quantitative test indicated the reporting unit’s estimated fair value was significantly in excess of the carrying value of its net assets and we do not believe there have been significant changes in the reporting unit’s operations that would significantly decrease its estimated fair value or significantly increase its net assets.  If a quantitative assessment is performed, the fair value of the reporting unit and the fair value of goodwill are determined based upon a discounted cash flow analysis and/or use of a market approach by looking at market values of comparable companies.  Significant assumptions are incorporated into our discounted cash flow analyses such as estimated growth rates and risk-adjusted discount rates.  We perform this test in the fourth quarter of the year or whenever events or changes in circumstances indicate that the carrying value of the reporting unit’s assets may not be recoverable.  If the fair value of the reporting unit is less than its carrying value, an impairment loss is recorded in the amount that the carrying value of the business unit exceeds the fair value. See Note 9 for more information regarding goodwill.

Intangible Assets

Intangible Assets - Intangible assets are initially measured at their fair value.  We have determined the fair value of our intangible assets either by the fair value of the consideration exchanged for the intangible asset or the estimated after-tax discounted cash flows expected to be generated from the intangible asset.  Intangible assets with an indefinite life, including certain trademarks and trade names and in-process research and development (“IPR&D”) projects, are not amortized.  Indefinite life intangible assets are assessed annually to determine whether events and circumstances continue to support an indefinite life.  Intangible assets with a finite life, including technology, certain trademarks and trade names, customer-related intangibles, intellectual property rights and patents and licenses are amortized on a straight-line basis over their estimated useful life or contractual life, which may range from less than one year to twenty years.  Intangible assets with a finite life are tested for impairment whenever events or circumstances indicate that the carrying amount may not be recoverable.  

Intangible assets with an indefinite life are tested for impairment annually or whenever events or circumstances indicate that the carrying amount may not be recoverable.  An impairment loss is recognized if the carrying amount exceeds the estimated fair value of the asset.  The amount of the impairment loss to be recorded would be determined based upon the excess of the asset’s carrying value over its fair value.  The fair values of indefinite lived intangible assets are determined based upon a discounted cash flow analysis using the relief from royalty method or a qualitative assessment may be performed for any changes to the asset’s fair value from the last quantitative assessment.  The relief from royalty method estimates the cost savings associated with owning, rather than licensing, assets.  Significant assumptions are incorporated into these discounted cash flow analyses such as estimated growth rates, royalty rates and risk-adjusted discount rates.  We may do a qualitative assessment when the results of the previous quantitative test indicated that the asset’s fair value was significantly in excess of its carrying value.  

In determining the useful lives of intangible assets, we consider the expected use of the assets and the effects of obsolescence, demand, competition, anticipated technological advances, changes in surgical techniques, market influences and other economic factors.  For technology-based intangible assets, we consider the expected life cycles of products, absent unforeseen technological advances, which incorporate the corresponding technology.  Trademarks and trade names that do not have a wasting characteristic (i.e., there are no legal, regulatory, contractual, competitive, economic or other factors which limit the useful life) are assigned an indefinite life.  Trademarks and trade names that are related to products expected to be phased out are assigned lives consistent with the period in which the products bearing each brand are expected to be sold.  For customer relationship intangible assets, we assign useful lives based upon historical levels of customer attrition.  Intellectual property rights are assigned useful lives that approximate the contractual life of any related patent or the period for which we maintain exclusivity over the intellectual property.  

Income Taxes

Income Taxes - We account for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements.  Under this method, deferred tax assets and liabilities are determined based on the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse.  The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period the new tax rate is enacted.

We reduce our deferred tax assets by a valuation allowance if it is more likely than not that we will not realize some portion or all of the deferred tax assets.  In making such determination, we consider all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax planning strategies and recent financial operations.  In the event we were to determine that we would be able to realize our deferred income tax assets in the future in excess of their net recorded amount, we would make an adjustment to the valuation allowance which would reduce the provision for income taxes.  

We operate on a global basis and are subject to numerous and complex tax laws and regulations.  Our income tax filings are regularly under audit in multiple federal, state and foreign jurisdictions.  Income tax audits may require an extended period of time to reach resolution and may result in significant income tax adjustments when interpretation of tax laws or allocation of company profits is disputed.  Because income tax adjustments in certain jurisdictions can be significant, we record accruals representing management's best estimate of the probable resolution of these matters.  To the extent additional information becomes available, such accruals are adjusted to reflect the revised estimated probable outcome.

Derivative Financial Instruments

Derivative Financial Instruments - We measure all derivative instruments at fair value and report them on our consolidated balance sheet as assets or liabilities.  We maintain written policies and procedures that permit, under appropriate circumstances and subject to proper authorization, the use of derivative financial instruments solely for risk management purposes.  The use of derivative financial instruments for trading or speculative purposes is prohibited by our policy.  See Note 13 for more information regarding our derivative and hedging activities.

Accumulated Other Comprehensive (Loss) Income

Accumulated Other Comprehensive (Loss) Income – Accumulated other comprehensive (loss) income (“AOCI”) refers to revenues, expenses, gains and losses that under generally accepted accounting principles are included in comprehensive income but are excluded from net earnings as these amounts are recorded directly as an adjustment to stockholders’ equity.  Our AOCI is comprised of foreign currency translation adjustments, including unrealized gains and losses on net investments hedges, unrealized gains and losses on cash flow hedges and amortization of prior service costs and unrecognized gains and losses in actuarial assumptions.  

Treasury Stock

Treasury Stock - We account for repurchases of common stock under the cost method and present treasury stock as a reduction of stockholders’ equity.  We reissue common stock held in treasury only for limited purposes.

Noncontrolling Interest

Noncontrolling Interest - We have investments in other companies in which we have a controlling financial interest, but not 100 percent of the equity.  Further information related to the noncontrolling interests of those investments have not been provided as it is not significant to our consolidated financial statements.

Accounting Pronouncements Recently Adopted

Accounting Pronouncements Recently Adopted

In August 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2017-12 – Targeted Improvements to Accounting for Hedging Activities.  This ASU amends the hedge accounting guidance to simplify the application of hedge accounting, makes more financial and nonfinancial hedging strategies eligible for hedge accounting treatment, changes how companies assess effectiveness and updates presentation and disclosure requirements.  We early adopted this ASU in the first quarter of 2018.  Based upon our hedging portfolio that existed prior to adoption, the adoption of this ASU did not have any impact on our financial position, results of operations or cash flows.  However, after adoption we entered into cross-currency interest rate swaps that we designated as net investment hedges.  Under this ASU, we have made a policy election for changes in the fair value of the cross-currency component of the cross-currency interest rate swaps to be recorded in AOCI.  Therefore, all changes in the fair value of the cross-currency interest rate swaps are recorded as a component of AOCI in our consolidated balance sheet.  The portion of this change related to the excluded component will be amortized into earnings over the life of the derivative while the remainder will be recorded in AOCI until the hedged net investment is sold or substantially liquidated.  Under previous guidance, the fair value change related to the cross-currency component was recognized in earnings.  See Note 13 for additional information.    

In February 2018, the FASB issued ASU 2018-02 – Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.  Under GAAP, when there is a change in tax rates, it requires remeasurement of deferred tax assets and liabilities to be recognized as part of income, even if the deferred tax asset or liability had been recorded and recognized in AOCI.  As a result, a portion of the amount recognized in AOCI at the previous tax rate would remain stranded in AOCI permanently.  ASU 2018-02 allows the stranded tax effects in AOCI related only to the Tax Cuts and Jobs Act of 2017 (“2017 Tax Act”) to be reclassified from AOCI to retained earnings.  The only stranded tax effects in AOCI we had related to the 2017 Tax Act were due to changes in the U.S. federal corporate income tax rate.  We early adopted this ASU in the first quarter of 2018 and elected to use the beginning of period transition method, which means we recognized the reclassification as of January 1, 2018.  As a result, we reclassified $42.9 million from AOCI to retained earnings.  

In March 2017, the FASB issued ASU 2017-07 – Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.  This ASU requires us to report the service cost component of pensions in the same location as other compensation costs arising from services rendered by the pertinent employees during the period.  We are required to report the other components of net benefit costs in other income (expense) in the statements of earnings.  This ASU was effective for us as of January 1, 2018.  This ASU must be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension cost in the statements of earnings and prospectively, on and after the effective date, for the capitalization of the service cost component of net periodic pension cost in assets.  This ASU provides a practical expedient that allows companies to use the amounts disclosed in prior financial statements as the basis for the retrospective application.  We elected to use this practical expedient.  The impacts of this ASU on our consolidated financial statements for the years ended December 31, 2017 and 2016 are included in the tables below.  See Note 14 for further information on the components of our net benefit cost.

In May 2014, the FASB issued ASU 2014-09 – Revenue from Contracts with Customers (Topic 606).  This ASU provides a five-step model for revenue recognition that all industries will apply to recognize revenue when a customer obtains control of a good or service.  This ASU was effective for us as of January 1, 2018.  Entities were permitted to apply the standard and related amendments either retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying the ASU recognized at the date of initial application.  We adopted this new standard using the retrospective method, which resulted in us restating prior reporting periods presented.  This ASU did not result in a change to the timing of our revenue recognition.  Accordingly, we did not recognize a cumulative adjustment to retained earnings upon adoption.  However, we were required to reclassify certain immaterial costs from SG&A expense to net sales, which resulted in a reduction of net sales, but had no impact on operating profit.  This ASU also required us to reclassify our estimated refund liability for products expected to be returned from a reduction of accounts receivable to other current liabilities and the related right to receive products from the return from inventories to prepaid expenses and other current assets.  The impacts of this ASU on our consolidated financial statements for the years ended December 31, 2017 and 2016 and as of December 31, 2017 are included in the tables below.

 

 

 

 

 

 

New

 

 

New

 

 

 

 

 

 

 

 

 

 

As

 

 

Revenue

 

 

Pension

 

 

 

 

 

 

 

 

 

 

Previously

 

 

Standard

 

 

Standard

 

 

 

 

 

 

As

 

(in millions)

Reported

 

 

Adjustment

 

 

Adjustment

 

 

Reclassifications

 

 

Restated

 

Statement of Earnings

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Year Ended December 31, 2017

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net Sales

$

7,824.1

 

 

$

(20.8

)

 

$

-

 

 

$

-

 

 

$

7,803.3

 

Research and development

 

367.4

 

 

 

-

 

 

 

-

 

 

 

2.5

 

 

 

369.9

 

Selling, general and administrative

 

2,973.9

 

 

 

(20.8

)

 

 

8.9

 

 

 

142.7

 

 

 

3,104.7

 

Goodwill and intangible asset impairment

 

304.7

 

 

 

-

 

 

 

-

 

 

 

26.8

 

 

 

331.5

 

Acquisition, integration and related

 

-

 

 

 

-

 

 

 

-

 

 

 

279.8

 

 

 

279.8

 

Quality remediation

 

-

 

 

 

-

 

 

 

-

 

 

 

181.3

 

 

 

181.3

 

Special items

 

633.1

 

 

 

-

 

 

 

-

 

 

 

(633.1

)

 

 

-

 

Operating expenses

 

7,015.9

 

 

 

(20.8

)

 

 

8.9

 

 

 

-

 

 

 

7,004.0

 

Operating Profit

 

808.2

 

 

 

-

 

 

 

(8.9

)

 

 

-

 

 

 

799.3

 

Other expense, net

 

(18.3

)

 

 

-

 

 

 

8.9

 

 

 

-

 

 

 

(9.4

)

 

 

 

 

 

 

New

 

 

New

 

 

 

 

 

 

 

 

 

 

As

 

 

Revenue

 

 

Pension

 

 

 

 

 

 

 

 

 

 

Previously

 

 

Standard

 

 

Standard

 

 

 

 

 

 

As

 

(in millions)

Reported

 

 

Adjustment

 

 

Adjustment

 

 

Reclassifications

 

 

Restated

 

Statement of Earnings

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Year Ended December 31, 2016

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net Sales

$

7,683.9

 

 

$

(15.5

)

 

$

-

 

 

$

-

 

 

$

7,668.4

 

Selling, general and administrative

 

2,932.9

 

 

 

(15.5

)

 

 

4.8

 

 

 

22.4

 

 

 

2,944.6

 

Goodwill and intangible asset impairment

 

-

 

 

 

-

 

 

 

-

 

 

 

31.1

 

 

 

31.1

 

Acquisition, integration and related

 

-

 

 

 

-

 

 

 

-

 

 

 

504.9

 

 

 

504.9

 

Quality remediation

 

-

 

 

 

-

 

 

 

-

 

 

 

53.4

 

 

 

53.4

 

Special items

 

611.8

 

 

 

-

 

 

 

-

 

 

 

(611.8

)

 

 

-

 

Operating expenses

 

6,858.0

 

 

 

(15.5

)

 

 

4.8

 

 

 

-

 

 

 

6,847.3

 

Operating Profit

 

825.9

 

 

 

-

 

 

 

(4.8

)

 

 

-

 

 

 

821.1

 

Other expense, net

 

(71.3

)

 

 

-

 

 

 

4.8

 

 

 

-

 

 

 

(66.5

)

 

 

 

 

 

 

New

 

 

 

 

 

 

As

 

 

Revenue

 

 

 

 

 

 

Previously

 

 

Standard

 

 

As

 

(in millions)

Reported

 

 

Adjustment

 

 

Restated

 

Balance Sheet

 

 

 

 

 

 

 

 

 

 

 

December 31, 2017

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Accounts receivable, less allowance for doubtful accounts

$

1,494.6

 

 

$

49.5

 

 

$

1,544.1

 

Inventories

 

2,081.8

 

 

 

(13.5

)

 

 

2,068.3

 

Prepaid expenses and other current assets

 

414.5

 

 

 

13.5

 

 

 

428.0

 

Other current liabilities

 

1,299.8

 

 

 

49.5

 

 

 

1,349.3

 

Accounting Pronouncements Not Yet Adopted

In February 2016, the FASB issued ASU 2016-02 – Leases.  This ASU requires lessees to recognize right-of-use assets and lease liabilities on the balance sheet. This ASU will be effective for us beginning January 1, 2019. This ASU requires a modified retrospective transition method that can either be applied at the earliest comparative period in the financial statements or the period of adoption.  We plan to use the period of adoption (January 1, 2019) transition method and therefore will not restate prior periods.  This ASU allows for certain practical expedients to make the adoption of the ASU less burdensome.  We have elected the practical expedients upon transition which permits us to not reassess lease identification, classification, and initial direct costs under the new standard for leases that commenced prior to the effective date.  We have also elected not to recognize a right-of-use asset nor a lease liability for leases with an initial term of twelve months or less.  Finally, we have elected not to separate non-lease components from the leased components in the valuation of our right-of-use asset and lease liability.

We own most of our manufacturing facilities, but lease various office space, vehicles and other less significant assets throughout the world.  We have collected all of our lease agreements from across the organization that were entered into as of December 31, 2018 and completed our analysis of the key terms of these lease agreements to determine the appropriate accounting treatment.  We have also reviewed other various agreements for potential embedded leases.  We are in our final reviews of this implementation.  We expect the right-of-use asset and corresponding lease liability that we recognize as of January 1, 2019 will be in a range of $265 million to $295 million.  We do not expect the adoption of this ASU will require us to recognize a significant cumulative-effect adjustment in retained earnings.  Since substantially all of our leases are considered operating leases, we do not expect this ASU will have a material effect on our consolidated statements of earnings.

There are no other recently issued accounting pronouncements that we have not yet adopted that are expected to have a material effect on our financial position, results of operations or cash flows.

Revenue Recognition

We recognize revenue when our performance obligations under the terms of a contract with our customer are satisfied.  This happens when we transfer control of our products to the customer, which generally occurs upon implantation or when title passes upon shipment.  Revenue is measured as the amount of consideration we expect to receive in exchange for transferring our product.  Taxes collected from customers and remitted to governmental authorities are excluded from revenues.

We sell product through three principal channels: 1) direct to healthcare institutions, referred to as direct channel accounts; 2) through stocking distributors and healthcare dealers; and 3) directly to dental practices and dental laboratories.  In direct channel accounts and with some healthcare dealers, inventory is generally consigned to sales agents or customers so that products are available when needed for surgical procedures.  No revenue is recognized upon the placement of inventory into consignment, as we retain the ability to control the inventory.  Upon implantation, we issue an invoice and revenue is recognized.  Consignment sales represented approximately 80 percent of our net sales in 2018.  Pricing for products is generally predetermined by contracts with customers, agents acting on behalf of customer groups or by government regulatory bodies, depending on the market.  Price discounts under group purchasing contracts are generally linked to volume of implant purchases by customer healthcare institutions within a specified group.  At negotiated thresholds within a contract buying period, price discounts may increase.  Payment terms vary by customer, but are typically less than 90 days.  

With sales to stocking distributors, some healthcare dealers, dental practices and dental laboratories, revenue is generally recognized when control of our product passes to the customer, which is typically upon shipment of the product.  We estimate sales recognized in this manner represented approximately 20 percent of our net sales in 2018.  It is our accounting policy to account for shipping and handling activities as a fulfillment cost rather than as an additional promised service.  We have contracts with these customers or orders may be placed from available price lists.  Payment terms vary by customer, but are typically less than 90 days.  

We offer standard warranties to our customers that our products are not defective.  These standard warranties are not considered separate performance obligations.  In limited circumstances, we offer extended warranties that are separate performance obligations.  We have very few contracts that have multiple performance obligations.  Since we do not have significant multiple element arrangements and essentially all of our sales are recognized upon implantation of a product or when title passes, very little judgment is required to allocate the transaction price of a contract or determine when control has passed to a customer.  Our costs to obtain contracts consist primarily of sales commissions to employees or third party agents that are earned when control of our product passes to the customer.  Therefore, sales commissions are expensed as part of SG&A expenses at the same time revenue is recognized.  Accordingly, we do not have significant contract assets, liabilities or future performance obligations.  

We offer volume-based discounts, rebates, prompt pay discounts, right of return and other various incentives which we account for under the variable consideration model.  If sales incentives may be earned by a customer for purchasing a specified amount of our product, we estimate whether such incentives will be achieved and recognize these incentives as a reduction in revenue in the same period the underlying revenue transaction is recognized.  We primarily use the expected value method to estimate incentives.  Under the expected value method, we consider the historical experience of similar programs as well as review sales trends on a customer-by-customer basis to estimate what levels of incentives will be earned.  Occasionally, products are returned and, accordingly, we maintain an estimated refund liability based upon the expected value method that is recorded as a reduction in revenue.  

We analyze sales by three geographies, the Americas, Europe, Middle East and Africa (“EMEA”) and Asia Pacific, and by the following product categories: Knees; Hips; Surgical, Sports Medicine, Biologics, Foot and Ankle, Extremities and Trauma (“S.E.T.”); Dental; Spine & Craniomaxillofacial and Thoracic (“CMF”); and Other.  As discussed in Note 17, we have seven operating segments that are based upon geography and product categories.  The geographic segments include sales of all product categories exclusive of the specific product category operating segments.  The geographic operating segments are the Americas, EMEA and Asia Pacific.  These three operating segments are our reporting segments.  The product category operating segments are Spine, less Asia Pacific; Office Based Technologies; CMF; and Dental.  The product operating segments do not constitute a reporting segment because they are, individually and on a combined basis, insignificant to our consolidated results.  

 

Our sales analysis differs from our reporting operating segments because the underlying market trends in any particular geography tend to be similar across product categories, we primarily sell the same products in all geographies and the product category operating segments are not individually significant to our consolidated results.

 

Net sales by geography are as follows (in millions):

 

 

 

For the Years Ended December 31,

 

 

 

2018

 

 

2017

 

 

2016

 

Americas

 

$

4,837.2

 

 

$

4,844.8

 

 

$

4,786.7

 

EMEA

 

 

1,801.9

 

 

 

1,745.2

 

 

 

1,730.4

 

Asia Pacific

 

 

1,293.8

 

 

 

1,213.3

 

 

 

1,151.3

 

Total

 

$

7,932.9

 

 

$

7,803.3

 

 

$

7,668.4

 

 

Net sales by product category are as follows (in millions):

 

 

 

For the Years Ended December 31,

 

 

 

2018

 

 

2017

 

 

2016

 

Knees

 

$

2,773.7

 

 

$

2,734.0

 

 

$

2,751.2

 

Hips

 

 

1,921.4

 

 

 

1,871.8

 

 

 

1,861.8

 

S.E.T

 

 

1,751.8

 

 

 

1,701.8

 

 

 

1,639.1

 

Dental

 

 

411.2

 

 

 

418.6

 

 

 

427.9

 

Spine & CMF

 

 

763.9

 

 

 

757.9

 

 

 

660.7

 

Other

 

 

310.9

 

 

 

319.2

 

 

 

327.7

 

Total

 

$

7,932.9

 

 

$

7,803.3

 

 

$

7,668.4