Organization and Basis of Presentation	12 Months Ended
Organization and Basis of Presentation	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Basis of Presentation	Organization and Basis of Presentation Organization and Operations Molina Healthcare, Inc. provides managed healthcare services under the Medicaid and Medicare programs, and through the state insurance marketplaces (the “Marketplace”). In the first quarter of 2021, we realigned our reportable operating segments to reflect recent changes in our internal operating and reporting structure, which is now organized by government program. These reportable segments consist of: 1) Medicaid; 2) Medicare; 3) Marketplace; and 4) Other. For further information, refer to Note 16, “Segments.” As of December 31, 2021, we served approximately 5.2 million members eligible for government-sponsored healthcare programs, located across 18 states. Our state Medicaid contracts typically have terms of three to five years, contain renewal options exercisable by the state Medicaid agency, and allow either the state or the health plan to terminate the contract with or without cause. Such contracts are subject to risk of loss in states that issue requests for proposal (“RFP”) open to competitive bidding by other health plans. If one of our health plans is not a successful responsive bidder to a state RFP, its contract may not be renewed. In addition to contract renewal, our state Medicaid contracts may be periodically amended to include or exclude certain health benefits (such as pharmacy services, behavioral health services, or long-term care services); populations such as the aged, blind or disabled (“ABD”); and regions or service areas. Recent Developments Texas Acquisition — Medicaid and Medicare. On January 1, 2022, we closed on our acquisition of Cigna Corporation’s Texas Medicaid and Medicare-Medicaid Plan (“MMP”) contracts, along with certain operating assets. See Note 4, “Business Combinations,” for further information. New York Acquisition — Medicaid. On October 25, 2021, we closed on our acquisition of substantially all of the assets of Affinity Health Plan, Inc., a Medicaid health plan in New York. As a result, we added approximately 310,000 members in New York. See Note 4, “Business Combinations,” for further information. New York Acquisition—Medicaid. On October 7, 2021, we announced a definitive agreement to acquire the Medicaid Managed Long Term Care business of AgeWell New York (“AgeWell”). As of August 31, 2021, AgeWell served approximately 13,000 managed long-term services and supports members, with full-year 2020 premium revenue of approximately $700 million. The purchase price for the transaction is approximately $106 million, net of certain tax benefits and target allocation of required regulatory capital, which we intend to fund with cash on hand. The transaction is subject to applicable federal and state regulatory approvals and the satisfaction of other customary closing conditions. We currently expect the transaction to close by the third quarter of 2022. Nevada Procurement—Medicaid. On August 17, 2021, we announced that our Nevada health plan subsidiary was selected as an awardee in Clark and Washoe Counties. This new contract commenced on January 1, 2022, and offers health coverage to TANF, CHIP and Medicaid Expansion beneficiaries. The four year contract with a possible two year extension was ratified in September 2021. Ohio Procurement—Medicaid. On April 13, 2021, we announced that our Ohio health plan subsidiary was selected as an awardee in all three regions across the state pursuant to the Medicaid managed care request for award issued on September 30, 2020, by the Ohio Department of Medicaid. This new contract is expected to begin July 1, 2022, and will offer health care coverage to Medicaid beneficiaries through the state of Ohio’s Covered Family and Children, Expansion, and ABD programs. Consolidation and Presentation The consolidated financial statements include the accounts of Molina Healthcare, Inc., and its subsidiaries. All significant inter-company balances and transactions have been eliminated in consolidation. Financial information related to subsidiaries acquired during any year is included only for periods subsequent to their acquisition. In the opinion of management, all adjustments considered necessary for a fair presentation of the results as of the date and for the periods presented have been included; such adjustments consist of normal recurring adjustments. Reclassifications Consistent with the change in reportable segments described above, certain prior year disclosures in Note 9, “Goodwill and Intangible Assets, Net,” Note 10, “Medical Claims and Benefits Payable,” and Note 16, “Segments,” have been recast to conform to the current year presentation. Certain immaterial amounts presented in the accompanying consolidated statement of cash flows for the years ended December 31, 2020 and 2019, have been reclassified to conform to the current year presentation. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities. Estimates also affect the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.