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Noncontrolling Interests Subject to Put Provisions and Other Commitments
 12 Months Ended
Dec. 31, 2020
Accounting Policies [Abstract]  
Noncontrolling Interests Subject to Put Provisions and Other Commitments Noncontrolling interests subject to put provisions and other commitments
Noncontrolling interests subject to put provisions
The Company has potential obligations to purchase the equity interests held by third parties in many of its majority-owned dialysis partnerships and other nonconsolidated entities. These noncontrolling interests subject to put provisions constitute redeemable equity interests and are therefore classified as temporary equity and carried at estimated fair value on the Company's balance sheet.
Specifically, these obligations are in the form of put provisions that are exercisable at the third-party owners’ discretion within specified periods outlined in each specific put provision. If these put provisions were exercised, the Company would be required to purchase the third-party owners’ equity interests, generally at the appraised fair market value of the equity interests or in certain cases at a predetermined multiple of earnings or cash flows attributable to the equity interests put to the Company, intended to approximate fair value. The methodology the Company uses to estimate the fair values of noncontrolling interests subject to put provisions assumes the higher of either a liquidation value of net assets or an average multiple of earnings, based on historical earnings, patient mix and other performance indicators that can affect future results, as well as other factors. The estimated fair values of noncontrolling interests subject to put provisions are a critical accounting estimate that involves significant judgments and assumptions and may not be indicative of the actual values at which the noncontrolling interests may ultimately be settled, which could vary significantly from the Company’s current estimates. The estimated fair values of noncontrolling interests subject to put provisions can fluctuate and the implicit multiple of earnings at which these noncontrolling interests obligations may be settled will vary significantly depending upon market conditions including potential purchasers’ access to the capital markets, which can impact the level of competition for dialysis and non-dialysis related businesses, the economic performance of these businesses and the restricted marketability of the third-party owners’ equity interests. The amount of noncontrolling interests subject to put provisions that employ a contractually predetermined multiple of earnings rather than fair value is immaterial.
The Company also has certain potential commitments to provide working capital funding, if necessary, to certain nonconsolidated dialysis businesses that the Company manages and in which the Company owns a noncontrolling equity interest or which are wholly-owned by third parties of approximately $8,663.
Certain consolidated dialysis partnerships are originally contractually scheduled to dissolve after terms ranging from ten years to 50 years. While noncontrolling interests in these limited life entities qualify as mandatorily redeemable financial instruments, they are subject to a classification and measurement scope exception from the accounting guidance generally applicable to other mandatorily redeemable financial instruments. Future distributions upon dissolution of these entities would be valued below the related noncontrolling interest carrying balances in the consolidated balance sheet.
Other commitments
In 2017, the Company entered into a Sourcing and Supply Agreement with Amgen USA Inc. (Amgen) that expires on December 31, 2022. Under the terms of the agreement, the Company will purchase EPO from Amgen in amounts necessary to meet no less than 90% of its requirements for erythropoiesis-stimulating agents (ESAs) through the expiration of the contract. The actual amount of EPO that the Company will purchase will depend upon the amount of EPO administered during dialysis as prescribed by physicians and the overall number of patients that the Company serves.
The Company has agreements with various suppliers to purchase established amounts of dialysis equipment, parts, and supplies. As of December 31, 2020, the remaining minimum purchase commitments under these arrangements were approximately $542,061, $540,715, $179,869, and $92,075 for the years 2021, 2022, 2023, and 2024, respectively. If the Company fails to meet the minimum purchase commitments under these contracts during any year, it is required to pay the difference to the supplier.
Other than the letters of credit disclosed in Note 13 to these consolidated financial statements, and the arrangements as described above, the Company has no off balance sheet financing arrangements as of December 31, 2020.