BASIS OF PRESENTATION AND SIGNIFICANT EVENTS (Policies)	3 Months Ended
BASIS OF PRESENTATION AND SIGNIFICANT EVENTS (Policies)	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The accompanying unaudited condensed consolidated financial statements are presented in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures normally required by accounting principles generally accepted in the United States of America, or GAAP, or those normally made in an Annual Report on Form 10-K. The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP. For further information, the reader of this Form 10-Q should refer to our Form 10-K for the year ended December 31, 2022, that was filed with the Securities and Exchange Commission, or the SEC, on February 16, 2023. We refer to this Form 10-K as the “2022 Form 10-K” in this document. References throughout this document to “we,” “us,” “our,” “Company,” and “Humana” mean Humana Inc. and its subsidiaries. The preparation of our condensed consolidated financial statements in accordance with GAAP requires us to make estimates and assumptions that affect the amounts reported in the unaudited condensed consolidated financial statements and accompanying notes. The areas involving the most significant use of estimates are the estimation of benefits payable, the impact of risk adjustment provisions related to our Medicare contracts, the valuation and related impairment recognition of investment securities, and the valuation and related impairment recognition of long-lived assets, including goodwill and indefinite-lived intangible assets. These estimates are based on knowledge of current events and anticipated future events, and accordingly, actual results may ultimately differ materially from those estimates. For additional information regarding accounting policies considered in preparing our consolidated financial statements, refer to Note 2 to the audited Consolidated Financial Statements included in Part II, Item 8, "Financial Statements and Supplementary Data" in our 2022 Form 10-K. The financial information has been prepared in accordance with our customary accounting practices and has not been audited. In our opinion, the information presented reflects all adjustments necessary for a fair statement of interim results. All such adjustments are of a normal and recurring nature. Employer Group Commercial Medical Products Business Exit In February 2023, we announced our planned exit from the Employer Group Commercial Medical Products business, which includes all fully insured, self-funded and Federal Employee Health Benefit medical plans, as well as associated wellness and rewards programs. No other Humana health plan offerings are materially affected. Following a strategic review, we determined the Employer Group Commercial Medical Products business was no longer positioned to sustainably meet the needs of commercial members over the long term or support our long-term strategic plans. The exit from this line of business will be phased over the next 18 to 24 months. Value Creation Initiatives During 2022, in order to create capacity to fund growth and investment in our Medicare Advantage business and further expansion of our healthcare services capabilities in 2023, we committed to drive additional value for the enterprise through cost saving, productivity initiatives, and value acceleration from previous investments. As a result of these initiatives, we recorded charges of $473 million for the year-ended December 31, 2022. These charges primarily relate to $248 million in asset impairments, including software and abandonment, and $116 million of severance charges in connection with workforce optimization. The remainder of the charges primarily relate to external consulting fees. These charges were recorded at the corporate level and not allocated to the segments. We did not record any charges in the first quarter of 2022, with no recurring charges in 2023.
Revenue Recognition	Revenue Recognition Our revenues include premiums and services revenue. Services revenue includes administrative service fees that are recorded based upon established per member per month rates and the number of members for the month and are recognized as services are provided for the month. Additionally, services revenue includes net patient services revenue that are recorded based upon established billing rates, less allowances for contractual adjustments, and are recognized as services are provided. For additional information regarding our revenues, refer to Note 2 to the audited Consolidated Financial Statements included in Part II, Item 8, "Financial Statements and Supplementary Data" in our 2022 Form 10-K. For additional information regarding disaggregation of revenue by segment and type, refer to Note 14 to the unaudited Condensed Consolidated Financial Statements included in Part I, Item 1, "Financial Statements" of this Form 10-Q.
Recently Issued Accounting Pronouncements	In November 2020, the FASB issued Accounting Standards Update No. 2020-11, Financial Services—Insurance (Topic 944): Effective Date and Early Application (“ASU 2020-11”). The amendments in ASU 2020-11 make changes to the effective date and early application of Accounting Standards Update No. 2018-12, Financial Services—Insurance (Topic 944): Targeted Improvements to the Accounting for Long-Duration Contracts (“ASU 2018-12”), which was issued in November 2018. The amendments in ASU 2020-11 have extended the original effective date by one year, and now the amendments are required for our interim and annual reporting periods beginning after December 15, 2022. The new guidance relates to accounting for long-duration contracts of insurers which revises key elements of the measurement models and disclosure requirements for long-duration contracts issued by insurers, including the amortization of deferred contract acquisition costs and the measurement of liabilities for future policy benefits using current, rather than locked-in, assumptions. The new guidance, limited to our Medicare Supplement product which represent less than 1% of consolidated premiums and services revenue, became effective for us beginning January 1, 2023 and is to be applied to contracts in force on the basis of their existing carrying value amounts at the beginning of the earliest period presented. The adoption of the new standard in 2023 did not have a material impact on our consolidated results of operations, financial position or cash flows.There are no other recently issued accounting standards that apply to us or that are expected to have a material impact on our results of operations, financial condition, or cash flows.