XML 68 R50.htm IDEA: XBRL DOCUMENT
v3.24.0.1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Part D Subsidy/Discount Payments, Net (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Accounting Policies [Abstract] |  |  |
Part D subsidy/discount payments | $ (17,582) | $ (16,530) | $ (14,889)
Part D subsidy/discount reimbursements | 18,353 | 18,498 | 14,628
Net reimbursements (payments) | $ 771 | $ 1,968 | $ (261)

X
- Definition Subsidy And Discount Payments + References No definition available. + Details
Name: | hum_SubsidyAndDiscountPayments
Namespace Prefix: | hum_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Subsidy And Discount Payments In Excess Of Reimbursements + References No definition available. + Details
Name: | hum_SubsidyAndDiscountPaymentsInExcessOfReimbursements
Namespace Prefix: | hum_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Subsidy And Discount Reimbursements + References No definition available. + Details
Name: | hum_SubsidyAndDiscountReimbursements
Namespace Prefix: | hum_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration