XML 118 R96.htm IDEA: XBRL DOCUMENT
v3.25.0.1

STOCKHOLDERS' EQUITY - Schedule of Share Repurchases (Details) - USD ($) shares in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Equity, Class of Treasury Stock [Line Items] |  |  |
Cost of repurchases | $ 803,000,000 | $ 1,586,000,000 | $ 2,096,000,000
Excluding Employee Stock Plans and ASR |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Shares repurchased (in shares) | 1.9 | 3.1 | 4.3
Cost of repurchases | $ 750,000,000 | $ 1,500,000,000 | $ 2,000,000,000
February 2024 |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Purchase Not to Exceed | $ 3,000,000,000 |  |
Shares repurchased (in shares) | 0.2 | 0.0 | 0.0
Cost of repurchases | $ 74,000,000 | $ 0 | $ 0
February 2023 |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Purchase Not to Exceed | $ 3,000,000,000 |  |
Shares repurchased (in shares) | 1.7 | 3.1 | 0.0
Cost of repurchases | $ 676,000,000 | $ 1,500,000,000 | $ 0
February 2021 |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Purchase Not to Exceed | $ 3,000,000,000 |  |
Shares repurchased (in shares) | 0.0 | 0.0 | 4.3
Cost of repurchases | $ 0 | $ 0 | $ 2,000,000,000

X
- Definition Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481520/505-30-50-4 + Details
Name: | srt_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_EquityClassOfTreasuryStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_TreasuryStockSharesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481549/505-30-45-1 + Details
Name: | us-gaap_TreasuryStockValueAcquiredCostMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | srt_ShareRepurchaseProgramAxis=hum_ExcludingEmployeeStockPlansAndAcceleratedShareRepurchaseAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ShareRepurchaseProgramAxis=hum_February2024ShareRepurchaseAuthorizationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ShareRepurchaseProgramAxis=hum_February2023ShareRepurchaseAuthorizationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ShareRepurchaseProgramAxis=hum_February2021ShareRepurchaseAuthorizationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |