XML 54 R44.htm IDEA: XBRL DOCUMENT
v3.25.1

MEDICARE PART D (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Cms Subsidies Or Discounts |  |
Product Information [Line Items] |  |
Net assets (liabilities) | $ 455 | $ 530
Cost Sharing Settlements Medicare Part D |  |
Product Information [Line Items] |  |
Net assets (liabilities) | $ (167) | $ 126

X
- Definition Net Asset (Liability) + References No definition available. + Details
Name: | hum_NetAssetLiability
Namespace Prefix: | hum_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ProductInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=hum_CmsSubsidiesOrDiscountsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=hum_CostSharingSettlementsMedicarePartDMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |