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Significant Accounting Policies | 3 Months Ended
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Mar. 31, 2021
Accounting Policies [Abstract] |
Significant Accounting Policies | Significant Accounting Policies Cash and Cash Equivalents Cash and cash equivalents consist of cash and short-term, highly liquid investments that are both readily convertible into known amounts of cash and have a maturity of three months or less on the date of purchase. The following table reconciles cash, cash equivalents, and restricted cash and cash equivalents reported within the accompanying consolidated balance sheets that sum to the total of the same such amounts presented in the accompanying consolidated statements of cash flows. The restricted cash and cash equivalents presented below are included in “Restricted investments” in the accompanying consolidated balance sheets.
| March 31,
| 2021 |  | 2020
| (In millions)
Cash and cash equivalents | $ | 4,431 |  |  | $ | 2,365 |
Restricted cash and cash equivalents | 66 |  |  | 58 |
Total cash, cash equivalents, and restricted cash and cash equivalents presented in the consolidated statements of cash flows | $ | 4,497 |  |  | $ | 2,423 |
Receivables Receivables consist primarily of premium amounts due from government agencies, which may be subject to potential retroactive adjustments. Because substantially all our receivable amounts are readily determinable and substantially all of our creditors are governmental authorities, our allowance for credit losses is insignificant. Any amounts determined to be uncollectible are charged to expense when such determination is made.
| March 31, 2021 |  | December 31, 2020
| (In millions)
Government receivables | $ | 1,332 |  |  | $ | 969 |
Pharmacy rebate receivables | 200 |  |  | 178 |
Health insurer fee reimbursement receivables | 54 |  |  | 104 |
Other | 190 |  |  | 255 |
Magellan Complete Care acquisition opening balance | — |  |  | 166 |
Total | $ | 1,776 |  |  | $ | 1,672 |
Premium Revenue Recognition and Amounts Due Government Agencies Premium revenue is generated from our contracts with state and federal agencies, in connection with our participation in the Medicaid, Medicare, and Marketplace programs. Premium revenue is generally received based on per member per month (“PMPM”) rates established in advance of the periods covered. These premium revenues are recognized in the month that members are entitled to receive healthcare services, and premiums collected in advance are deferred. State Medicaid programs and the federal Medicare program periodically adjust premium rates. Certain components of premium revenue are subject to accounting estimates and are described in further detail below, and in our 2020 Annual Report on Form 10-K, Note 2, “Significant Accounting Policies,” under “Contractual Provisions That May Adjust or Limit Revenue or Profit,” and “Quality Incentives.” Contractual Provisions That May Adjust or Limit Revenue or Profit Many of our contracts contain provisions that may adjust or limit revenue or profit, which include those provisions with significant interim period balances described in further detail below. We recognize premium revenue as it is earned under such provisions. Liabilities accrued for premiums to be returned under such provisions are reported in the aggregate as “Amounts due government agencies,” in the accompanying consolidated balance sheets. Categorized by segment, such amounts due government agencies included the following:
| March 31, 2021 |  | December 31, 2020
| (In millions)
Medicaid: |  |  |
Minimum MLR and profit sharing | $ | 735 |  |  | $ | 513 |
Other | 167 |  |  | 76 |
Medicare: |  |  |
Risk adjustment and Part D risk sharing | 75 |  |  | 45 |
Minimum MLR and profit sharing | 105 |  |  | 62 |
Other | 42 |  |  | 30 |
Marketplace: |  |  |
Risk adjustment | 520 |  |  | 326 |
Minimum MLR | 47 |  |  | 37 |
Other | 27 |  |  | 21 |
Magellan Complete Care acquisition opening balance | — |  |  | 143 |
Total amounts due government agencies | $ | 1,718 |  |  | $ | 1,253 |
Medicaid Minimum MLR and Retroactive Premium Adjustments. State Medicaid programs periodically adjust premium rates on a retroactive basis. In these cases, we adjust our premium revenue in the period in which we determine that the adjustment is probable and reasonably estimable, and is based on our best estimate of the ultimate premium we expect to realize for the period being adjusted. Beginning in 2020, through March 31, 2021, various states enacted temporary risk corridors in response to the reduced demand for medical services stemming from COVID-19, which have resulted in a reduction of our medical margin. In some cases, these risk corridors were retroactive to earlier periods in 2020, or as early as the beginning of the states’ fiscal years in 2019. Beginning in the second quarter of 2020, we have recognized retroactive risk corridors that we believe to be probable, and where the ultimate premium amount is reasonably estimable. In the first quarter of 2021, we recognized approximately $110 million related to such risk corridors, primarily in the Medicaid segment. It is possible that certain states could increase the level of existing risk corridors, and other states could implement some form of retroactive risk corridors in the future. Due to these uncertainties, the ultimate outcomes could differ materially from our estimates as a result of changes in facts or further developments, which could have an adverse effect on our consolidated financial position, results of operations, or cash flows. Marketplace Risk Adjustment. Under this program, our health plans’ composite risk scores are compared with the overall average risk score for the relevant state and market pool. Generally, our health plans will make a risk adjustment payment into the pool if their composite risk scores are below the average risk score (risk adjustment payable), and will receive a risk adjustment payment from the pool if their composite risk scores are above the average risk score (risk adjustment receivable). We estimate our ultimate premium based on insurance policy year-to-date experience, and recognize estimated premiums relating to the risk adjustment program as an adjustment to premium revenue in our consolidated statements of income. As of March 31, 2021, Marketplace risk adjustment payables amounted to $520 million and related receivables amounted to $20 million, for a net payable of $500 million, of which $211 million related to 2021, and $289 million related primarily to 2020. As of December 31, 2020, Marketplace risk adjustment payables amounted to $326 million and related receivables amounted to $20 million, for a net payable of $306 million. Concentrations of Credit Risk Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash and cash equivalents, investments, receivables, and restricted investments. Our investments and a portion of our cash equivalents are managed by professional portfolio managers operating under documented investment guidelines. Our portfolio managers must obtain our prior approval before selling investments where the loss position of those investments exceeds certain levels. Our investments consist primarily of investment-grade debt securities with final maturities of less than 10 years, or less than 10 years average life for structured securities. Restricted investments are invested principally in cash, cash equivalents, and U.S. Treasury securities. Concentration of credit risk with respect to accounts receivable is limited because our payors consist principally of the federal government, and the local governments of the states in which our health plan subsidiaries operate. Income Taxes The provision for income taxes is determined using an estimated annual effective tax rate, which generally differs from the U.S. federal statutory rate primarily because of foreign and state taxes, and nondeductible expenses such as certain compensation and other general and administrative expenses. The effective tax rate may be subject to fluctuations during the year as new information is obtained. Such information may affect the assumptions used to estimate the annual effective tax rate, including projected pretax earnings, the mix of pretax earnings in the various tax jurisdictions in which we operate, valuation allowances against deferred tax assets, the recognition or the reversal of the recognition of tax benefits related to uncertain tax positions, and changes in or the interpretation of tax laws in jurisdictions where we conduct business. We recognize deferred tax assets and liabilities for temporary differences between the financial reporting basis and the tax basis of our assets and liabilities, along with net operating loss and tax credit carryovers. Recent Accounting Pronouncements Various recent accounting pronouncements issued by the FASB (including its Emerging Issues Task Force), the American Institute of Certified Public Accountants, and the Securities and Exchange Commission (“SEC”) did not have, nor does management expect such pronouncements to have, a significant impact on our present or future consolidated financial statements

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- Definition The entire disclosure for all significant accounting policies of the reporting entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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