XML 46 R28.htm IDEA: XBRL DOCUMENT
v3.26.1

BASIS OF PREPARATION AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) £ / shares in Units, £ in Millions, $ in Billions | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2026 GBP (£) £ / shares | Jun. 30, 2026 USD ($) | Dec. 31, 2025 GBP (£) £ / shares | Jun. 30, 2025 GBP (£) £ / shares | Dec. 31, 2024 GBP (£)
Disclosure of information about consolidated structured entities [line items] |  |  |  |  |
Number of major product categories | 6 |  |  |  |
Cash and cash equivalents net of bank overdrafts | £ | £ 805 |  | £ 1,303 | £ 626 | £ 2,207
Euro commercial paper |  |  |  |  |
Disclosure of information about consolidated structured entities [line items] |  |  |  |  |
Notional amount | £ | £ 2,000 |  |  |  |
US Dollar commercial paper |  |  |  |  |
Disclosure of information about consolidated structured entities [line items] |  |  |  |  |
Notional amount | $ |  | $ 10.0 |  |  |
Ordinary shares |  |  |  |  |
Disclosure of information about consolidated structured entities [line items] |  |  |  |  |
Nominal value per share | £ / shares | £ 0.01 |  | £ 0.01 | £ 0.01 |
August 2029 |  |  |  |  |
Disclosure of information about consolidated structured entities [line items] |  |  |  |  |
Undrawn credit facilities | $ |  | $ 1,750.0 |  |  |

X
- Definition Number of major product categories + References No definition available. + Details
Name: | hln_NumberOfMajorProductCategories
Namespace Prefix: | hln_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of cash and cash equivalents in the statement of cash flows when different from the amount of cash and cash equivalents in the statement of financial position. [Refer: Cash and cash equivalents] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2025-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_45&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition The nominal or face amount of a financial instrument, used to calculate payments made on that instrument. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_112_c&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_NotionalAmount
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition The nominal value per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph B10 -Subparagraph a -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B10_a_iii&doctype=Appendix&subtype=B -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 160 -Subparagraph a -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_160_a_iii&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 79 -Subparagraph a -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_79_a_iii&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_ParValuePerShare
Namespace Prefix: | ifrs-full_
Data Type: | dtr-2022:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of undrawn borrowing facilities that may be available for future operating activities and to settle capital commitments. [Refer: Capital commitments] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2025-01-01 -Paragraph 50 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_50_a&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_UndrawnBorrowingFacilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=hln_EuroCommercialPaperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=hln_UsDollarCommercialPaperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=ifrs-full_OrdinarySharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=hln_August2029Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |