Deposits received on sales of passenger cruises are initially recorded as customer deposit liabilities on our balance sheet. Customer deposits are subsequently recognized as passenger ticket revenues, together with revenues from onboard and other goods and services and all associated cruise operating expenses of a voyage. For further information on revenue recognition, refer to Note 3. Revenue.

Property and equipment are stated at cost less accumulated depreciation and amortization. We capitalize interest as part of the cost of acquiring certain assets. Improvement costs that we believe add value to our ships are capitalized as additions to the ship, the useful lives of the improvements are estimated and depreciated over the shorter of the improvements' estimated useful lives or that of the associated ship, and the replaced assets are disposed of on a net cost basis. The estimated cost and accumulated depreciation of replaced or refurbished ship components are written off and any resulting losses are recognized in Cruise operating expenses. Liquidated damages received from shipyards as a result of the late delivery of a new ship are recorded as reductions to the cost basis of the ship.

Depreciation of property and equipment is computed using the straight-line method over the estimated useful life of the asset. The useful lives of our ships are generally 30-35 years, net of a 10%-15% projected residual value. The 30-35-year useful life and 10%-15% residual value are based on the weighted-average of all major components of a ship. Our useful life and residual value estimates take into consideration the impact of anticipated technological changes, long-term cruise and vacation market conditions and historical useful lives of similarly-built ships. In addition, we take into consideration our estimates of the weighted-average useful lives of the ships' major component systems, such as hull, superstructure, main electric, engines and cabins. We employ a cost allocation methodology at the component level, in order to support the estimated weighted-average useful lives and residual values, as well as to determine the net cost basis of assets being replaced. Given the very large and complex nature of our ships, our accounting estimates related to ships and determinations of ship improvement costs to be capitalized require considerable judgment and are inherently uncertain. Depreciation for assets under finance leases is computed using the shorter of the lease term or related asset life, unless the asset is a finance lease due to title transferring or a purchase option that is reasonably certain of being exercised, in which case the asset is depreciated over the related asset life.

We periodically review estimated useful lives and residual values for ongoing reasonableness, considering long term views on our intended use of each class of ships and the planned level of improvements to maintain and enhance vessels within those classes. In the event a factor is identified that may trigger a change in the estimated useful lives and residual values of our ships, a review of the estimate is completed.

We review long-lived assets for impairment whenever events or changes in circumstances indicate, based on estimated undiscounted future cash flows, that the carrying value of these assets may not be fully recoverable. For purposes of recognition and measurement of an impairment loss, long-lived assets are grouped with other assets and liabilities at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. The lowest level for which we maintain identifiable cash flows that are independent of the cash flows of other assets and liabilities is at the ship level for our ships. If estimated future cash flows are less than the carrying value of an asset, an impairment charge is recognized to the extent its carrying value exceeds fair value. Refer to Note 6. Property and Equipment for further information on determination of fair value for long-lived assets.

We use the deferral method to account for drydocking costs. Under the deferral method, drydocking costs incurred are deferred and charged to expense on a straight-line basis over the period to the next scheduled drydock, which we estimate to be a period of thirty to sixty months based on the vessel's age as required by Class. Deferred drydock costs consist of the costs to drydock the vessel and other costs incurred in connection with the drydock which are necessary to maintain the vessel's Class certification. Class certification is necessary in order for our cruise ships to be flagged in a specific country, obtain liability insurance and legally operate as passenger cruise ships. The activities associated with those drydocking costs cannot be performed while the vessel is in service and, as such, are done during a drydock as a planned major maintenance activity. The significant deferred drydock costs consist of hauling and wharfage services provided by the drydock facility, hull inspection and related activities (e.g., scraping, pressure cleaning, bottom painting), maintenance to steering propulsion, thruster equipment and ballast tanks, port services such as tugs, pilotage and line handling, and freight associated with these items. We perform a detailed analysis of the various activities performed for each drydock and only defer those costs that are directly related to planned major maintenance activities necessary to maintain Class. The costs deferred are related to activities not otherwise routinely periodically performed to maintain a vessel's designed and intended operating capability. Repairs and maintenance activities are charged to expense as incurred.

Goodwill represents the excess of cost over the fair value of net tangible and identifiable intangible assets acquired. We review goodwill for impairment at the reporting unit level annually or, when events or circumstances dictate, more frequently. The impairment review for goodwill consists of a qualitative assessment of whether it is more-likely-than-not that a reporting unit's fair value is less than its carrying value, and if necessary, a goodwill impairment test. Factors to consider when performing the qualitative assessment include general economic conditions, limitations on accessing capital, changes in forecasted operating results, changes in fuel prices and fluctuations in foreign exchange rates. If the qualitative assessment demonstrates that it is more-likely-than-not that the estimated fair value of the reporting unit exceeds its carrying value, it is not necessary to perform the goodwill impairment test. We may elect to bypass the qualitative assessment and proceed directly to step one, for any reporting unit, in any period. On a periodic basis, we elect to bypass the qualitative assessment and proceed to step one to corroborate the results of recent years' qualitative assessments. We can resume the qualitative assessment for any reporting unit in any subsequent period.

The goodwill impairment analysis consists of a comparison of the fair value of the reporting unit with its carrying value. We typically estimate the fair value of our reporting units using a discounted cash flow model, which may also include a combination of a market-based valuation approach. The estimation of fair value utilizing discounted expected future cash flows includes numerous uncertainties which require our significant judgment when making assumptions of expected revenues, operating costs, marketing, selling and administrative expenses, interest rates, ship additions and retirements as well as

assumptions regarding the cruise vacation industry's competitive environment and general economic and business conditions, among other factors. The principal assumptions used in the discounted cash flow model for our 2021 impairment assessments were: (i) forecasted net revenues, primarily the timing of returning to normalized operations, occupancy rates from existing and expected ship deliveries, and terminal growth rate; and (ii) weighted average cost of capital (i.e., discount rate). The discounted cash flow model uses the most current projected operating results for the upcoming fiscal year as a base. We discount the projected cash flows using rates specific to the reporting unit based on its weighted-average cost of capital. If the fair value of the reporting unit exceeds its carrying value, no write-down of goodwill is required. If the fair value of the reporting unit is less than the carrying value of its net assets, an impairment is recognized based on the amount by which the carrying value of a reporting unit exceeds its fair value, not to exceed the total amount of goodwill allocated to such reporting unit.

In connection with our acquisitions, we have acquired certain intangible assets to which value has been assigned based on our estimates. Intangible assets that are deemed to have an indefinite life are not amortized, but are subject to an annual impairment test, or when events or circumstances dictate, more frequently. The impairment review for indefinite-life intangible assets can be performed using a qualitative or quantitative impairment assessment. The quantitative assessment consists of a comparison of the fair value of the asset with its carrying value. We estimate the fair value of these assets using a discounted cash flow model and various valuation methods depending on the nature of the intangible asset, such as the relief-from-royalty method for trademarks and trade names. The principal assumptions used in the discounted cash flows model for our 2021 impairment assessments were: (i) forecasted net revenues, primarily the timing of returning to normalized operations, occupancy rates from existing and expected ship deliveries, and terminal growth rate; (ii) royalty rate; and (iii) weighted average cost of capital (i.e., discount rate). If the carrying value exceeds its fair value, an impairment loss is recognized in an amount equal to that excess. If the fair value exceeds its carrying value, the indefinite-life intangible asset is not considered impaired.

On an ongoing basis, we assess the potential liabilities related to any lawsuits or claims brought against us. While it is typically difficult to determine the timing and ultimate outcome of such actions, we use our best judgment to determine if it is probable that we will incur an expense related to the settlement or final adjudication of such matters and whether a reasonable estimation of such probable loss, if any, can be made. In assessing probable losses, we take into consideration estimates of the amount of insurance recoveries, if any, which are recorded as assets when recoverability is probable. We accrue a liability when we believe a loss is probable and the amount of loss can be reasonably estimated. Due to the inherent uncertainties related to the eventual outcome of litigation and potential insurance recoveries, it is possible that certain matters may be resolved for amounts materially different from any provisions or disclosures that we have previously made.

We enter into various forward, swap and option contracts to manage our interest rate exposure and to limit our exposure to fluctuations in foreign currency exchange rates and fuel prices. These instruments are recorded on the balance sheet at their fair value and the vast majority are designated as hedges. We also use non-derivative financial instruments designated as hedges of our net investment in our foreign operations and investments. Although certain of our derivative financial instruments do not qualify or are not accounted for under hedge accounting, our objective is not to hold or issue derivative financial instruments for trading or other speculative purposes.

At inception of the hedge relationship, a derivative instrument that hedges the exposure to changes in the fair value of a firm commitment or a recognized asset or liability is designated as a fair value hedge. A derivative instrument that hedges a forecasted transaction or the variability of cash flows related to a recognized asset or liability is designated as a cash flow hedge.

Changes in the fair value of derivatives that are designated as fair value hedges are offset against changes in the fair value of the underlying hedged assets, liabilities or firm commitments. Gains and losses on derivatives that are designated as cash flow hedges are recorded as a component of Accumulated other comprehensive loss until the underlying hedged transactions are recognized in earnings. The foreign currency transaction gain or loss of our non-derivative financial instruments and the changes in the fair value of derivatives designated as hedges of our net investment in foreign operations and investments are recognized as a component of Accumulated other comprehensive loss along with the associated foreign currency translation adjustment of the foreign operation or investment. In certain hedges of our net investment in foreign operations and investments, we exclude forward points from the assessment of hedge effectiveness and we amortize the related amounts directly into earnings.

On an ongoing basis, we assess whether derivatives used in hedging transactions are "highly effective" in offsetting changes in the fair value or cash flow of hedged items. For our net investment hedges, we use the dollar offset method to measure effectiveness. For all other hedging programs, we use the long-haul method to assess hedge effectiveness using regression analysis for each hedge relationship. The methodology for assessing hedge effectiveness is applied on a consistent basis for each one of our hedging programs (i.e., interest rate, foreign currency ship construction, foreign currency net investment and fuel). For our regression analyses, we use an observation period of up to three years, utilizing market data relevant to the hedge horizon of each hedge relationship. High effectiveness is achieved when a statistically valid relationship reflects a high degree of offset and correlation between the changes in the fair values of the derivative instrument and the hedged item. If it is determined that a derivative is not highly effective as a hedge or hedge accounting is discontinued, any change in fair value of the derivative since the last date at which it was determined to be effective is recognized in earnings.

Cash flows from derivative instruments that are designated as fair value or cash flow hedges are classified in the same category as the cash flows from the underlying hedged items. In the event that hedge accounting is discontinued, cash flows subsequent to the date of discontinuance are classified within investing activities. Cash flows from derivative instruments not designated as hedging instruments are classified as investing activities.

We consider the classification of the underlying hedged item’s cash flows in determining the classification for the designated derivative instrument’s cash flows. We classify derivative instrument cash flows from hedges of benchmark interest rate or hedges of fuel expense as operating activities due to the nature of the hedged item. Likewise, we classify derivative instrument cash flows from hedges of foreign currency risk on our newbuild ship payments as investing activities.

We translate assets and liabilities of our foreign subsidiaries whose functional currency is the local currency, at exchange rates in effect at the balance sheet date. We translate revenues and expenses at weighted-average exchange rates for the period. Equity is translated at historical rates and the resulting foreign currency translation adjustments are included as a component of Accumulated other comprehensive loss, which is reflected as a separate component of Shareholders' equity. Exchange gains or losses arising from the remeasurement of monetary assets and liabilities denominated in a currency other than the functional currency of the entity involved are immediately included in our earnings, except for certain liabilities that have been designated to act as a hedge of a net investment in a foreign operation or investment. Exchange gains (losses) were $24.3 million, $(1.5) million and $0.4 million for the years ended December 31, 2021, 2020 and 2019, respectively, and were recorded within Other income (expense). The majority of our transactions are settled in United States dollars. Gains or losses resulting from transactions denominated in other currencies are recognized in income at each balance sheet date.

We monitor our credit risk associated with financial and other institutions with which we conduct significant business and, to minimize these risks, we select counterparties with credit risks acceptable to us and we seek to limit our exposure to an individual counterparty. Credit risk, including but not limited to counterparty nonperformance under derivative instruments, our credit facilities and new ship progress payment guarantees, is not considered significant, as we primarily conduct business with large, well-established financial institutions, insurance companies and export credit agencies many of which we have long-term relationships with and which have credit risks acceptable to us or where the credit risk is spread out among a large number of counterparties. As of December 31, 2021 and December 31, 2020, we had counterparty credit risk exposure under our derivative instruments of $1.9 million and $26.9 million respectively, which was limited to the cost of replacing the contracts in the event of non-performance by the counterparties to the contracts, the majority of which are currently our lending banks. We do not anticipate nonperformance by any of our significant counterparties. In addition, we have established guidelines we follow regarding credit ratings and instrument maturities to maintain safety and liquidity. We do not normally require collateral or other security to support credit relationships; however, in certain circumstances this option is available to us.

Basic (loss) earnings per share is computed by dividing Net (Loss) Income attributable to Royal Caribbean Cruises Ltd. by the weighted-average number of shares of common stock outstanding during each period. Diluted (loss) earnings per share incorporates the incremental shares issuable upon the assumed exercise of stock options and conversion of potentially dilutive securities.

As of December 31, 2021, we controlled and operated three global cruise brands: Royal Caribbean International, Celebrity Cruises and Silversea Cruises. We also own a 50% joint venture interest in TUIC, that operates the German brands TUI Cruises and Hapag-Lloyd Cruises. We believe our brands possess the versatility to enter multiple cruise market segments within the cruise vacation industry. Although each of these brands has its own marketing style as well as ships and crews of various sizes, the nature of the products sold and services delivered by these brands share a common base (i.e., the sale and provision of cruise vacations). Our brands also have similar itineraries as well as similar cost and revenue components. In addition, our brands source passengers from similar markets around the world and operate in similar economic environments with a significant degree of commercial overlap. As a result, our brands have been aggregated as a single reportable segment based on the similarity of their economic characteristics, types of consumers, regulatory environment, maintenance requirements, supporting systems and processes as well as products and services provided. Our Chief Executive Officer has been identified as the chief operating decision-maker and all significant operating decisions including the allocation of resources are based upon the analyses of the Company as one segment. Refer to Note 3. Revenue for passenger ticket revenue information by geographic area.

In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848), which provides optional expedients and exceptions to the current guidance on contract modifications and hedging relationships to ease the financial reporting burdens of the expected market transition from LIBOR and other interbank offered rates to alternative reference rates. Subsequently, in January 2021, the FASB issued ASU No. 2021-01, Reference Rate Reform (Topic 848), which presents amendments to clarify that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. The guidance in both ASUs was effective upon issuance and may be applied prospectively to contract modifications made and hedging relationships entered into or evaluated on or before December 31, 2022. We are currently evaluating the impact of the new guidance on our consolidated financial statements. The impact, if any, will be dependent on the terms of any future contract modifications related to a change in reference rate.

In August 2020, the FASB issued ASU No. 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40), which simplifies the accounting for convertible instruments. The guidance removes certain accounting models which separate the embedded conversion features from the host contract for convertible instruments, requiring bifurcation only if the convertible debt feature qualifies as a derivative under ASC 815 or for convertible debt issued at a substantial premium. The ASU removes certain settlement conditions required for equity contracts to qualify for the derivative scope exception, permitting more contracts to qualify for it. In addition, the guidance eliminates the treasury stock method to calculate diluted earnings per share for convertible instruments and requires the use of the if-converted method. The ASU is effective for annual reporting periods beginning after December 15, 2021, including interim reporting periods within those annual periods, with early adoption permitted no earlier than the fiscal year beginning after December 15, 2020. We plan to adopt the new guidance on January 1, 2022 using the modified retrospective approach and expect to record a cumulative effect of adoption of approximately $146 million to retained earnings. The adoption will also result in a reduction to additional paid in capital of $308 million, and an increase to debt by $162 million primarily as a result of the reversal of the remaining non-cash convertible debt discount. The guidance will also result in a decrease in interest expense and will require us to use the more dilutive "if-converted" method when calculating the dilutive impact of our convertible debt instruments on earnings per share.