XML 69 R51.htm IDEA: XBRL DOCUMENT
v3.24.0.1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Health Care Cost Payments, Net (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Accounting Policies [Abstract] |  |  |
Health care cost payments | $ (7,073) | $ (7,110) | $ (6,943)
Health care cost reimbursements | 7,130 | 7,135 | 6,898
Net reimbursements (payments) | $ 57 | $ 25 | $ (45)

X
- Definition Health care cost payments associated with the TRICARE South Region contract + References No definition available. + Details
Name: | hum_HealthCareCostPayments
Namespace Prefix: | hum_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The difference between health care cost payments and reimbursements related to the TRICARE South Region contract. + References No definition available. + Details
Name: | hum_HealthCareCostPaymentsAndReimbursementsNet
Namespace Prefix: | hum_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reimbursements for health care cost payments associated with the TRICARE South Region contract + References No definition available. + Details
Name: | hum_HealthCareCostReimbursements
Namespace Prefix: | hum_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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