Organization and Summary of Significant Accounting Policies	12 Months Ended
Dec. 31, 2020
Accounting Policies [Abstract]
Organization and Summary of Significant Accounting Policies	Organization and summary of significant accounting policies Organization The Company's operations are comprised of its dialysis and related lab services to patients in the United States (its U.S. dialysis business), its ancillary services and strategic initiatives including its international operations (collectively, its ancillary services), and its corporate administrative support. The Company’s largest line of business is its U.S. dialysis business, which operates kidney dialysis centers in the U.S. for patients suffering from chronic kidney failure, also known as end stage renal disease (ESRD). As of December 31, 2020, the Company operated or provided administrative services through a network of 2,816 U.S. outpatient dialysis centers in 46 states and the District of Columbia, serving a total of approximately 204,200 patients. In addition, as of December 31, 2020, the Company operated or provided administrative services to a total of 321 outpatient dialysis centers serving approximately 36,200 patients located in ten countries outside of the U.S. On June 19, 2019, the Company completed the sale of its DaVita Medical Group (DMG) business to Collaborative Care Holdings, LLC (Optum), a subsidiary of UnitedHealth Group Inc. As a result of this transaction, DMG's results of operations have been reported as discontinued operations for all periods presented in these consolidated financial statements. For financial information about the DMG business, see Note 22. The Company’s U.S. dialysis business qualifies as a separately reportable segment and the Company’s ancillary services, including its international operations, have been combined and disclosed in the other segments category. Basis of presentation These consolidated financial statements are prepared in accordance with United States generally accepted accounting principles (U.S. GAAP). The financial statements include DaVita Inc. and its subsidiaries, partnerships and other entities in which it maintains a majority voting or other controlling financial interest (collectively, the Company). All significant intercompany transactions and balances have been eliminated. Equity investments in investees over which the Company only has significant influence are recorded on the equity method, while investments in other equity securities are recorded at fair value or on the adjusted cost method, as applicable. For the Company’s international subsidiaries, local currencies are considered their functional currencies. Translation adjustments result from translating the financial statements of the Company’s international subsidiaries from their functional currencies into the Company’s reporting currency (the U.S. dollar, or USD). Prior year classifications have been conformed to the current year presentation. The Company has evaluated subsequent events through the date these consolidated financial statements were issued and has included all necessary adjustments and disclosures. Use of estimates The preparation of financial statements in conformity with U.S. GAAP requires the use of estimates and assumptions that affect the reported amounts of revenues, expenses, assets, liabilities, contingencies and noncontrolling interests subject to put provisions. Although actual results in subsequent periods will differ from these estimates, such estimates are developed based on the best information available to management and management’s best judgments at the time. All significant assumptions and estimates underlying the amounts reported in the financial statements and accompanying notes are regularly reviewed and updated when necessary. Changes in estimates are reflected in the financial statements based upon on-going actual experience trends or subsequent settlements and realizations depending on the nature and predictability of the estimates and contingencies. The most significant assumptions and estimates underlying these consolidated financial statements and accompanying notes involve revenue recognition and accounts receivable, impairments of goodwill, accounting for income taxes, fair value estimates and loss contingencies. Specific estimating risks and contingencies are further addressed within these notes to the consolidated financial statements. Revenues On January 1, 2018, the Company adopted Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 606 Revenue from Contracts with Customers (Topic 606) using the cumulative effect method for those contracts that were not substantially completed as of January 1, 2018. Results for reporting periods beginning on and after January 1, 2018 are presented under Topic 606. The adoption of this new standard primarily changed the Company’s presentation of revenues, provision for uncollectible accounts and allowance for doubtful accounts. Topic 606 requires revenue to be recognized based on the Company’s estimate of the transaction price the Company expects to collect as a result of satisfying its performance obligations. Accordingly, for performance obligations satisfied after the adoption of Topic 606, the Company no longer separately presents a provision for uncollectible accounts on the consolidated income statement and no longer presents the related allowance for doubtful accounts on the consolidated balance sheet. However, as a result of the Company’s election to apply Topic 606 only to contracts not substantially completed as of January 1, 2018, the Company continued to maintain an allowance for doubtful accounts related to performance obligations satisfied prior to the adoption of Topic 606. Net collections or write-offs of accounts receivable generated prior to January 1, 2018, beyond amounts previously reserved thereon, are presented in the provision for uncollectible accounts on the consolidated income statement in accordance with Topic 605. Dialysis patient service revenues Revenues are recognized based on the Company’s estimate of the transaction price the Company expects to collect as a result of satisfying its performance obligations. Dialysis patient service revenues are recognized in the period services are provided based on these estimates. Revenues consist primarily of payments from government and commercial health plans for dialysis services provided to patients. A usual and customary fee schedule is maintained for the Company’s dialysis treatments and related lab services; however, actual collectible revenue is normally recognized at a discount from the fee schedule. Revenues associated with Medicare and Medicaid programs are estimated based on: (a) the payment rates that are established by statute or regulation for the portion of payment rates paid by the government payor (e.g., 80% for Medicare patients) and (b) for the portion not paid by the primary government payor, estimates of the amounts ultimately collectible from other government programs providing secondary coverage (e.g., Medicaid secondary coverage), the patient’s commercial health plan secondary coverage, or the patient. Under Medicare’s bundled payment rate system, services covered by Medicare are subject to estimating risk, whereby reimbursements from Medicare can vary significantly depending upon certain patient characteristics and other variable factors. Even with the bundled payment rate system, Medicare payments for bad debt claims as established by cost reports require evidence of collection efforts. As a result, billing and collection of Medicare bad debt claims can be delayed significantly and final payment is subject to audit. The Company’s revenue recognition is estimated based on its judgment regarding its ability to collect, which depends upon its ability to effectively capture, document and bill for Medicare’s base payment rate as well as these other variable factors. Medicaid payments, when Medicaid coverage is secondary, can also be difficult to estimate. For many states, Medicaid payment terms and methods differ from Medicare, and may prevent accurate estimation of individual payment amounts prior to billing. Revenues associated with commercial health plans are estimated based on contractual terms for the patients under healthcare plans with which the Company has formal agreements, non-contracted health plan coverage terms if known, estimated secondary collections, historical collection experience, historical trends of refunds and payor payment adjustments (retractions), inefficiencies in the Company’s billing and collection processes that can result in denied claims for payments, delays in collections due to payor payment inefficiencies, and regulatory compliance matters. Commercial revenue recognition also involves significant estimating risks. With many larger commercial insurers, the Company has several different contracts and payment arrangements, and these contracts often include only a subset of the Company’s centers. In certain circumstances, it may not be possible to determine which contract, if any, should be applied prior to billing. In addition, for services provided by non-contracted centers, final collection may require specific negotiation of a payment amount, typically at a significant discount from the Company’s usual and customary rates. Other revenues Other revenues consist of fees for management and administrative support services provided to outpatient dialysis businesses that the Company does not own or in which the Company owns a noncontrolling interest as well as revenues associated with the Company's non-dialysis ancillary services and strategic initiatives. Revenues associated with dialysis management services, integrated care services, clinical research programs, physician services, and ESRD seamless care organizations are estimated in the period services are provided. Revenues associated with pharmacy services until that business was closed in 2018 were estimated as prescriptions were filled and shipped to patients. Revenues associated with direct primary care until that business was sold in 2018 were estimated over the membership period. Other income Other income includes interest income on cash and cash equivalents and short- and long-term investments, realized and unrealized gains and losses recognized on investments, and foreign currency transaction gains and losses. Cash and cash equivalents Cash equivalents are short-term highly liquid investments readily convertible to known amounts of cash that typically mature within three months or less at date of purchase. Restricted cash and equivalents Restricted cash and cash equivalents include funds held in trust to satisfy insurer and state regulatory requirements related to wholly-owned captive insurance companies that bear professional and general liability and workers' compensation risks for the Company as well as funds held in escrow for certain legal settlements pending finalization. Investments in debt and equity securities The Company classifies certain debt securities as held-to-maturity and records them at amortized cost based on the Company’s intentions and strategies concerning those investments. Equity securities that have readily determinable fair values or redemption values are recorded at estimated fair value with changes in fair value recognized in current earnings within "Other income, net". These debt and equity investments are classified as "short-term investments" or "long-term investments" on the Company's consolidated balance sheet. See Note 5 for further details. Inventories Inventories are stated at the lower of cost (first-in, first-out) or net realizable value and consist principally of pharmaceuticals and dialysis-related supplies. Rebates related to inventory purchases are recorded when earned and are based on certain qualification requirements which are dependent on a variety of factors including future pricing levels from the manufacturer and related data submission. Property and equipment Property and equipment is stated at cost less accumulated depreciation and amortization and is further reduced by any impairments. Maintenance and repairs are charged to expense as incurred. Disposition gains and losses are included in current operating expenses. Property and equipment assets are reviewed for possible impairment whenever significant events or changes in circumstances indicate that an impairment may have occurred. Leases The Company leases substantially all of its U.S. dialysis facilities. The majority of the Company’s facilities are leased under non-cancellable operating leases which contain renewal options. These renewal options are included in the Company's determination of the right-of-use assets and related lease liabilities when renewal is considered reasonably certain at the commencement date. Certain of the Company's leases are subject to periodic consumer price increases or contain fixed escalation clauses. The Company categorizes leases with contractual terms longer than twelve months as either operating or finance leases. Finance leases are generally those leases that allow the Company to substantially utilize or pay for the entire asset over its estimated life. All other leases are categorized as operating leases. The Company has elected the practical expedient to not separate lease components from non-lease components for its financing and operating leases. The Company has also elected the short-term lease recognition exemption and does not recognize right-of-use assets or lease liabilities for leases with a term of less than 12 months. Financing and operating right-of-use assets are recognized based on the net present value of lease payments over the lease term plus expected renewals as of the commencement date. Since most of the Company's leases do not provide an implicit rate of return, the Company uses its incremental borrowing rate based on information available at the commencement date or remeasurement date in determining the present value of lease payments. Assets acquired under finance leases are recorded on the balance sheet within property and equipment, net and liabilities for finance lease obligations are recorded within long-term debt. Finance lease assets are amortized to depreciation expense on a straight-line basis over the shorter of their estimated useful lives or the expected lease term. Rights to use assets under operating leases are recorded on the balance sheet as operating lease right-of-use assets and liabilities for operating lease obligations are recorded as operating lease liabilities. Reductions in the carrying amount of operating lease right-of-use assets are recorded to rent expense over the lease term. Amortizable intangibles Amortizable intangible assets include noncompetition agreements, hospital service contracts, and customer relationships arising from other service contracts, each of which have finite useful lives. Amortization expense is computed using the straight-line method over the useful lives of the assets estimated as follows: non-competition agreements and hospital acute service contracts over the contract term, and customer relationships from other service contracts over the remaining contract term plus expected renewal periods. Amortizable intangible assets are reviewed for possible impairment whenever significant events or changes in circumstances indicate that an impairment may have occurred. Indefinite-lived intangibles Indefinite-lived intangible assets include international licenses and accreditations that allow the Company to be reimbursed for providing dialysis services to patients, each of which has an indefinite useful life. Indefinite-lived intangibles are not amortized, but are assessed for impairment at least annually and whenever significant events or changes in circumstances indicate that an impairment may have occurred. Costs to renew indefinite-lived intangible assets are expensed as incurred. Equity method and other investments Equity investments that do not have readily determinable fair values are carried on the equity method if the Company maintains significant influence over the investee. Equity investments without readily determinable fair values for which the Company does not maintain significant influence over the investee are carried either at estimated fair value or on the adjusted cost method, as determined on an investment-specific basis. The adjusted cost method represents the Company's cost for an investment, net of any other-than-temporary impairments, as adjusted for any subsequent observation of the investment's fair value. These equity method and adjusted cost method investments are classified as “Equity method and other investments” on the Company's consolidated balance sheet. See Note 9 for further details. Equity method and other investments are assessed for other-than-temporary impairment when significant events or changes in circumstances indicate that an other-than-temporary impairment may have occurred. An other-than-temporary impairment charge is recorded when the fair value of an investment has fallen below its carrying amount and the shortfall is expected to be indefinitely or permanently unrecoverable. Goodwill Goodwill represents the difference between the fair value of businesses acquired and the fair value of the identifiable tangible and intangible net assets acquired. Goodwill is not amortized, but is assessed by individual reporting unit for impairment as circumstances warrant and at least annually. An impairment charge is recognized when and to the extent a reporting unit's carrying amount is determined to exceed its fair value. The Company operates multiple reporting units. See Note 10 for further details. Self-insurance The Company predominantly self-insures its professional and general liability and workers' compensation risks through its wholly-owned captive insurance companies, with excess or reinsurance coverage for additional protection. The Company is also predominantly self-insured with respect to employee medical and other health benefits. The Company records insurance liabilities for the professional and general liability, workers’ compensation, and employee health benefit risks that it retains and estimates its liability for those risks using third party actuarial calculations that are based upon historical claims experience and expectations for future claims. Income taxes Federal and state income taxes are computed at currently enacted tax rates less tax credits using the asset and liability method. Deferred taxes are adjusted both for items that do not currently have tax consequences and for the cumulative effect of any changes in tax rates from those previously used to determine deferred tax assets or liabilities. Tax provisions include amounts that are currently payable, changes in deferred tax assets and liabilities that arise because of temporary differences between the timing of when items of income and expense are recognized for financial reporting and income tax purposes, changes in the recognition of tax positions and any changes in the valuation allowance caused by a change in judgment about the realizability of the related deferred tax assets. A valuation allowance is established when necessary to reduce deferred tax assets to amounts expected to be realized. The Company uses a recognition threshold of more-likely-than-not and a measurement attribute on all tax positions taken or expected to be taken in a tax return in order to be recognized in the financial statements. Once the recognition threshold is met, the tax position is then measured to determine the actual amount of benefit to recognize in the financial statements. Stock-based compensation The Company’s stock-based compensation expense for stock-settled awards is measured at the estimated fair value of awards on the date of grant and recognized on a cumulative straight-line basis over the vesting terms of the awards, unless the stock awards are based on non-market based performance metrics, in which case expense is adjusted for the ultimate number of shares expected to be issued as of the end of each reporting period. Stock-based compensation expense for cash-settled awards is based on their estimated fair values as of the end of each reporting period. The expense for all stock-based awards is recognized net of expected forfeitures. Interest rate cap agreements The Company often carries a combination of current or forward interest rate caps on portions of its variable rate debt as a means of hedging its exposure to changes in LIBOR interest rates as part of its overall interest rate risk management strategy. These interest rate caps are not held for trading or speculative purposes and are designated as qualifying cash flow hedges. See Note 13 for further details. Noncontrolling interests Noncontrolling interests represent third-party equity ownership interests in entities which are consolidated by the Company for financial statement reporting purposes. As of December 31, 2020, third parties held noncontrolling equity interests in 688 consolidated legal entities. Fair value estimates Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value measurements are determined based on the principal or most advantageous market for the item being measured, assume that buyers and sellers are independent, willing and able to transact, and knowledgeable, with access to all information customarily available in such a transaction, and are based on assumptions that market participants would use in pricing the item, not assumptions specific to the reporting entity. The Company relies on fair value measurements and estimates for purposes that require the recording, reassessment, or adjustment of the carrying amounts of certain assets, liabilities, and noncontrolling interests subject to put provisions (redeemable equity interests classified as temporary equity). These purposes can include the accounting for business combination transactions; impairment assessments for goodwill, other intangible assets, or other long-lived assets; recurrent revaluation of investments in debt and equity securities, contingent earn-out obligations, interest rate cap agreements, and noncontrolling interests subject to put provisions; and the accounting for equity method and other investments and stock-based compensation, as applicable. The Company has also classified its assets, liabilities and temporary equity into the appropriate fair value hierarchy levels as defined by the FASB. See Note 24 for further details. New accounting standards New standards recently adopted In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The amendments in this ASU amend the impairment model to utilize an expected loss methodology in place of the incurred loss methodology for financial instruments and off-balance sheet credit exposures. The amendment requires entities to consider a broader range of information to estimate expected credit losses, which may result in earlier recognition of losses. The amendments in this ASU became effective for the Company beginning on January 1, 2020 and were applied using a modified retrospective basis. The adoption of ASU No. 2016-13 did not have a material impact on the Company's consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework -Changes to the Disclosure Requirements for Fair Value Measurement. The applicable amendments in this ASU remove requirements for disclosures concerning transfers between fair value measurement levels 1, 2 and 3 and disclosures concerning valuation processes for level 3 fair value measurements. The applicable amendments in this ASU also add a requirement to separately disclose the changes in unrealized gains and losses included in other comprehensive income for the reporting period for level 3 items measured at fair value on a recurring basis, and require disclosure of the range and weighted average of significant unobservable inputs used to develop level 3 fair value measurements. The amendments in this ASU became effective for the Company beginning on January 1, 2020 and were applied on a prospective basis. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-15, Intangibles-Goodwill and Other-Internal Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. ASU No. 2018-15 aligns the requirements for capitalizing implementation costs incurred in a cloud computing arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The Company adopted this ASU as of January 1, 2020, using the prospective transition approach, which allows the Company to change the accounting method without restating prior periods or booking cumulative adjustments. The adoption of ASU No. 2018-15 did not have a material impact on the Company's consolidated financial statements. New standards not yet adopted In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. ASU 2019-12 attempts to simplify aspects of accounting for franchise taxes and enacted changes in tax laws or rates, and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. ASU 2019-12 is effective for public business entities for fiscal years beginning after December 15, 2020, including interim periods within that fiscal year. Early adoption is permitted for all entities. The Company has evaluated the impact of this standard on its consolidated financial statements, including accounting policies, processes, and systems, and does not expect the impact to be material. In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ASU No. 2020-04 provides optional expedients and exceptions for applying U.S. GAAP to contract modifications and hedging relationships, subject to meeting certain criteria, that reference LIBOR or another rate that is expected to be discontinued. The amendments in this ASU were effective beginning on March 12, 2020, and the Company may elect to apply the amendments prospectively through December 31, 2022. The Company is currently assessing the effect this guidance may have on its consolidated financial statements.

The Company's operations are comprised of its dialysis and related lab services to patients in the United States (its U.S. dialysis business), its ancillary services and strategic initiatives including its international operations (collectively, its ancillary services), and its corporate administrative support.

The Company’s largest line of business is its U.S. dialysis business, which operates kidney dialysis centers in the U.S. for patients suffering from chronic kidney failure, also known as end stage renal disease (ESRD). As of December 31, 2020, the Company operated or provided administrative services through a network of 2,816 U.S. outpatient dialysis centers in 46 states and the District of Columbia, serving a total of approximately 204,200 patients. In addition, as of December 31, 2020, the Company operated or provided administrative services to a total of 321 outpatient dialysis centers serving approximately 36,200 patients located in ten countries outside of the U.S.

On June 19, 2019, the Company completed the sale of its DaVita Medical Group (DMG) business to Collaborative Care Holdings, LLC (Optum), a subsidiary of UnitedHealth Group Inc. As a result of this transaction, DMG's results of operations have been reported as discontinued operations for all periods presented in these consolidated financial statements. For financial information about the DMG business, see Note 22.

These consolidated financial statements are prepared in accordance with United States generally accepted accounting principles (U.S. GAAP). The financial statements include DaVita Inc. and its subsidiaries, partnerships and other entities in which it maintains a majority voting or other controlling financial interest (collectively, the Company). All significant intercompany transactions and balances have been eliminated. Equity investments in investees over which the Company only has significant influence are recorded on the equity method, while investments in other equity securities are recorded at fair value or on the adjusted cost method, as applicable. For the Company’s international subsidiaries, local currencies are considered their functional currencies. Translation adjustments result from translating the financial statements of the Company’s international subsidiaries from their functional currencies into the Company’s reporting currency (the U.S. dollar, or USD). Prior year classifications have been conformed to the current year presentation.

The preparation of financial statements in conformity with U.S. GAAP requires the use of estimates and assumptions that affect the reported amounts of revenues, expenses, assets, liabilities, contingencies and noncontrolling interests subject to put provisions. Although actual results in subsequent periods will differ from these estimates, such estimates are developed based on the best information available to management and management’s best judgments at the time. All significant assumptions and estimates underlying the amounts reported in the financial statements and accompanying notes are regularly reviewed and updated when necessary. Changes in estimates are reflected in the financial statements based upon on-going actual experience trends or subsequent settlements and realizations depending on the nature and predictability of the estimates and contingencies.

The most significant assumptions and estimates underlying these consolidated financial statements and accompanying notes involve revenue recognition and accounts receivable, impairments of goodwill, accounting for income taxes, fair value estimates and loss contingencies. Specific estimating risks and contingencies are further addressed within these notes to the consolidated financial statements.

On January 1, 2018, the Company adopted Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 606 Revenue from Contracts with Customers (Topic 606) using the cumulative effect method for those contracts that were not substantially completed as of January 1, 2018. Results for reporting periods beginning on and after January 1, 2018 are presented under Topic 606.

The adoption of this new standard primarily changed the Company’s presentation of revenues, provision for uncollectible accounts and allowance for doubtful accounts. Topic 606 requires revenue to be recognized based on the Company’s estimate of the transaction price the Company expects to collect as a result of satisfying its performance obligations. Accordingly, for performance obligations satisfied after the adoption of Topic 606, the Company no longer separately presents a provision for uncollectible accounts on the consolidated income statement and no longer presents the related allowance for doubtful accounts on the consolidated balance sheet. However, as a result of the Company’s election to apply Topic 606 only to contracts not substantially completed as of January 1, 2018, the Company continued to maintain an allowance for doubtful accounts related to performance obligations satisfied prior to the adoption of Topic 606. Net collections or write-offs of accounts receivable generated prior to January 1, 2018, beyond amounts previously reserved thereon, are presented in the provision for uncollectible accounts on the consolidated income statement in accordance with Topic 605.

Revenues are recognized based on the Company’s estimate of the transaction price the Company expects to collect as a result of satisfying its performance obligations. Dialysis patient service revenues are recognized in the period services are provided based on these estimates. Revenues consist primarily of payments from government and commercial health plans for dialysis services provided to patients. A usual and customary fee schedule is maintained for the Company’s dialysis treatments and related lab services; however, actual collectible revenue is normally recognized at a discount from the fee schedule.

Revenues associated with Medicare and Medicaid programs are estimated based on: (a) the payment rates that are established by statute or regulation for the portion of payment rates paid by the government payor (e.g., 80% for Medicare patients) and (b) for the portion not paid by the primary government payor, estimates of the amounts ultimately collectible from other government programs providing secondary coverage (e.g., Medicaid secondary coverage), the patient’s commercial health plan secondary coverage, or the patient.

Under Medicare’s bundled payment rate system, services covered by Medicare are subject to estimating risk, whereby reimbursements from Medicare can vary significantly depending upon certain patient characteristics and other variable factors. Even with the bundled payment rate system, Medicare payments for bad debt claims as established by cost reports require evidence of collection efforts. As a result, billing and collection of Medicare bad debt claims can be delayed significantly and final payment is subject to audit. The Company’s revenue recognition is estimated based on its judgment regarding its ability to collect, which depends upon its ability to effectively capture, document and bill for Medicare’s base payment rate as well as these other variable factors.

Medicaid payments, when Medicaid coverage is secondary, can also be difficult to estimate. For many states, Medicaid payment terms and methods differ from Medicare, and may prevent accurate estimation of individual payment amounts prior to billing.

Revenues associated with commercial health plans are estimated based on contractual terms for the patients under healthcare plans with which the Company has formal agreements, non-contracted health plan coverage terms if known, estimated secondary collections, historical collection experience, historical trends of refunds and payor payment adjustments (retractions), inefficiencies in the Company’s billing and collection processes that can result in denied claims for payments, delays in collections due to payor payment inefficiencies, and regulatory compliance matters.

Commercial revenue recognition also involves significant estimating risks. With many larger commercial insurers, the Company has several different contracts and payment arrangements, and these contracts often include only a subset of the Company’s centers. In certain circumstances, it may not be possible to determine which contract, if any, should be applied prior to billing. In addition, for services provided by non-contracted centers, final collection may require specific negotiation of a payment amount, typically at a significant discount from the Company’s usual and customary rates.

Other revenues consist of fees for management and administrative support services provided to outpatient dialysis businesses that the Company does not own or in which the Company owns a noncontrolling interest as well as revenues associated with the Company's non-dialysis ancillary services and strategic initiatives. Revenues associated with dialysis management services, integrated care services, clinical research programs, physician services, and ESRD seamless care organizations are estimated in the period services are provided. Revenues associated with pharmacy services until that business was closed in 2018 were estimated as prescriptions were filled and shipped to patients. Revenues associated with direct primary care until that business was sold in 2018 were estimated over the membership period.

Restricted cash and cash equivalents include funds held in trust to satisfy insurer and state regulatory requirements related to wholly-owned captive insurance companies that bear professional and general liability and workers' compensation risks for the Company as well as funds held in escrow for certain legal settlements pending finalization.

The Company classifies certain debt securities as held-to-maturity and records them at amortized cost based on the Company’s intentions and strategies concerning those investments. Equity securities that have readily determinable fair values or redemption values are recorded at estimated fair value with changes in fair value recognized in current earnings within "Other income, net". These debt and equity investments are classified as "short-term investments" or "long-term investments" on the Company's consolidated balance sheet. See Note 5 for further details.

Inventories are stated at the lower of cost (first-in, first-out) or net realizable value and consist principally of pharmaceuticals and dialysis-related supplies. Rebates related to inventory purchases are recorded when earned and are based on certain qualification requirements which are dependent on a variety of factors including future pricing levels from the manufacturer and related data submission.

Property and equipment is stated at cost less accumulated depreciation and amortization and is further reduced by any impairments. Maintenance and repairs are charged to expense as incurred. Disposition gains and losses are included in current operating expenses. Property and equipment assets are reviewed for possible impairment whenever significant events or changes in circumstances indicate that an impairment may have occurred.

The Company leases substantially all of its U.S. dialysis facilities. The majority of the Company’s facilities are leased under non-cancellable operating leases which contain renewal options. These renewal options are included in the Company's determination of the right-of-use assets and related lease liabilities when renewal is considered reasonably certain at the commencement date. Certain of the Company's leases are subject to periodic consumer price increases or contain fixed escalation clauses.

The Company categorizes leases with contractual terms longer than twelve months as either operating or finance leases. Finance leases are generally those leases that allow the Company to substantially utilize or pay for the entire asset over its estimated life. All other leases are categorized as operating leases. The Company has elected the practical expedient to not separate lease components from non-lease components for its financing and operating leases. The Company has also elected the short-term lease recognition exemption and does not recognize right-of-use assets or lease liabilities for leases with a term of less than 12 months.

Financing and operating right-of-use assets are recognized based on the net present value of lease payments over the lease term plus expected renewals as of the commencement date. Since most of the Company's leases do not provide an implicit rate of return, the Company uses its incremental borrowing rate based on information available at the commencement date or remeasurement date in determining the present value of lease payments.

Assets acquired under finance leases are recorded on the balance sheet within property and equipment, net and liabilities for finance lease obligations are recorded within long-term debt. Finance lease assets are amortized to depreciation expense on a straight-line basis over the shorter of their estimated useful lives or the expected lease term.

Rights to use assets under operating leases are recorded on the balance sheet as operating lease right-of-use assets and liabilities for operating lease obligations are recorded as operating lease liabilities. Reductions in the carrying amount of operating lease right-of-use assets are recorded to rent expense over the lease term.

Amortizable intangible assets include noncompetition agreements, hospital service contracts, and customer relationships arising from other service contracts, each of which have finite useful lives. Amortization expense is computed using the straight-line method over the useful lives of the assets estimated as follows: non-competition agreements and hospital acute service contracts over the contract term, and customer relationships from other service contracts over the remaining contract term plus expected renewal periods. Amortizable intangible assets are reviewed for possible impairment whenever significant events or changes in circumstances indicate that an impairment may have occurred.

Indefinite-lived intangible assets include international licenses and accreditations that allow the Company to be reimbursed for providing dialysis services to patients, each of which has an indefinite useful life. Indefinite-lived intangibles are not amortized, but are assessed for impairment at least annually and whenever significant events or changes in circumstances indicate that an impairment may have occurred. Costs to renew indefinite-lived intangible assets are expensed as incurred.

Equity investments that do not have readily determinable fair values are carried on the equity method if the Company maintains significant influence over the investee. Equity investments without readily determinable fair values for which the Company does not maintain significant influence over the investee are carried either at estimated fair value or on the adjusted cost method, as determined on an investment-specific basis. The adjusted cost method represents the Company's cost for an investment, net of any other-than-temporary impairments, as adjusted for any subsequent observation of the investment's fair value. These equity method and adjusted cost method investments are classified as “Equity method and other investments” on the Company's consolidated balance sheet. See Note 9 for further details.

Equity method and other investments are assessed for other-than-temporary impairment when significant events or changes in circumstances indicate that an other-than-temporary impairment may have occurred. An other-than-temporary impairment charge is recorded when the fair value of an investment has fallen below its carrying amount and the shortfall is expected to be indefinitely or permanently unrecoverable.

Goodwill represents the difference between the fair value of businesses acquired and the fair value of the identifiable tangible and intangible net assets acquired. Goodwill is not amortized, but is assessed by individual reporting unit for impairment as circumstances warrant and at least annually. An impairment charge is recognized when and to the extent a reporting unit's carrying amount is determined to exceed its fair value. The Company operates multiple reporting units. See Note 10 for further details.

The Company predominantly self-insures its professional and general liability and workers' compensation risks through its wholly-owned captive insurance companies, with excess or reinsurance coverage for additional protection. The Company is also predominantly self-insured with respect to employee medical and other health benefits. The Company records insurance liabilities for the professional and general liability, workers’ compensation, and employee health benefit risks that it retains and estimates its liability for those risks using third party actuarial calculations that are based upon historical claims experience and expectations for future claims.

Federal and state income taxes are computed at currently enacted tax rates less tax credits using the asset and liability method. Deferred taxes are adjusted both for items that do not currently have tax consequences and for the cumulative effect of any changes in tax rates from those previously used to determine deferred tax assets or liabilities. Tax provisions include amounts that are currently payable, changes in deferred tax assets and liabilities that arise because of temporary differences between the timing of when items of income and expense are recognized for financial reporting and income tax purposes, changes in the recognition of tax positions and any changes in the valuation allowance caused by a change in judgment about

The Company uses a recognition threshold of more-likely-than-not and a measurement attribute on all tax positions taken or expected to be taken in a tax return in order to be recognized in the financial statements. Once the recognition threshold is met, the tax position is then measured to determine the actual amount of benefit to recognize in the financial statements.

The Company’s stock-based compensation expense for stock-settled awards is measured at the estimated fair value of awards on the date of grant and recognized on a cumulative straight-line basis over the vesting terms of the awards, unless the stock awards are based on non-market based performance metrics, in which case expense is adjusted for the ultimate number of shares expected to be issued as of the end of each reporting period. Stock-based compensation expense for cash-settled awards is based on their estimated fair values as of the end of each reporting period. The expense for all stock-based awards is recognized net of expected forfeitures.

The Company often carries a combination of current or forward interest rate caps on portions of its variable rate debt as a means of hedging its exposure to changes in LIBOR interest rates as part of its overall interest rate risk management strategy. These interest rate caps are not held for trading or speculative purposes and are designated as qualifying cash flow hedges. See Note 13 for further details.

Noncontrolling interests represent third-party equity ownership interests in entities which are consolidated by the Company for financial statement reporting purposes. As of December 31, 2020, third parties held noncontrolling equity interests in 688 consolidated legal entities.

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value measurements are determined based on the principal or most advantageous market for the item being measured, assume that buyers and sellers are independent, willing and able to transact, and knowledgeable, with access to all information customarily available in such a transaction, and are based on assumptions that market participants would use in pricing the item, not assumptions specific to the reporting entity.

The Company relies on fair value measurements and estimates for purposes that require the recording, reassessment, or adjustment of the carrying amounts of certain assets, liabilities, and noncontrolling interests subject to put provisions (redeemable equity interests classified as temporary equity). These purposes can include the accounting for business combination transactions; impairment assessments for goodwill, other intangible assets, or other long-lived assets; recurrent revaluation of investments in debt and equity securities, contingent earn-out obligations, interest rate cap agreements, and noncontrolling interests subject to put provisions; and the accounting for equity method and other investments and stock-based compensation, as applicable. The Company has also classified its assets, liabilities and temporary equity into the appropriate fair value hierarchy levels as defined by the FASB. See Note 24 for further details.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The amendments in this ASU amend the impairment model to utilize an expected loss methodology in place of the incurred loss methodology for financial instruments and off-balance sheet credit exposures. The amendment requires entities to consider a broader range of information to estimate expected credit losses, which may result in earlier recognition of losses. The amendments in this ASU became effective for the Company beginning on January 1, 2020 and were applied using a modified retrospective basis. The adoption of ASU No. 2016-13 did not have a material impact on the Company's consolidated financial statements.

In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework -Changes to the Disclosure Requirements for Fair Value Measurement. The applicable amendments in this ASU remove requirements for disclosures concerning transfers between fair value measurement levels 1, 2 and 3 and disclosures concerning

valuation processes for level 3 fair value measurements. The applicable amendments in this ASU also add a requirement to separately disclose the changes in unrealized gains and losses included in other comprehensive income for the reporting period for level 3 items measured at fair value on a recurring basis, and require disclosure of the range and weighted average of significant unobservable inputs used to develop level 3 fair value measurements. The amendments in this ASU became effective for the Company beginning on January 1, 2020 and were applied on a prospective basis. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements.

In August 2018, the FASB issued ASU No. 2018-15, Intangibles-Goodwill and Other-Internal Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. ASU No. 2018-15 aligns the requirements for capitalizing implementation costs incurred in a cloud computing arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The Company adopted this ASU as of January 1, 2020, using the prospective transition approach, which allows the Company to change the accounting method without restating prior periods or booking cumulative adjustments. The adoption of ASU No. 2018-15 did not have a material impact on the Company's consolidated financial statements.

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. ASU 2019-12 attempts to simplify aspects of accounting for franchise taxes and enacted changes in tax laws or rates, and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. ASU 2019-12 is effective for public business entities for fiscal years beginning after December 15, 2020, including interim periods within that fiscal year. Early adoption is permitted for all entities. The Company has evaluated the impact of this standard on its consolidated financial statements, including accounting policies, processes, and systems, and does not expect the impact to be material.

In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ASU No. 2020-04 provides optional expedients and exceptions for applying U.S. GAAP to contract modifications and hedging relationships, subject to meeting certain criteria, that reference LIBOR or another rate that is expected to be discontinued. The amendments in this ASU were effective beginning on March 12, 2020, and the Company may elect to apply the amendments prospectively through December 31, 2022. The Company is currently assessing the effect this guidance may have on its consolidated financial statements.