Represents the average effective post-swap interest rate of borrowings.

No definition available.

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- Definition

Represents the average effective pre-swap interest rate of borrowings.

+ References

No definition available.

+ Details

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- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ 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 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard
-URIDate 2025-03-27

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2025-01-01
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_7&doctype=Standard
-URIDate 2025-03-27

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

The amount of current borrowings and current portion of non-current borrowings. [Refer: Borrowings]

+ References

+ Details

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- 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

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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
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-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

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Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow for repayments of bonds, notes and debentures.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2025-01-01
-Paragraph 17
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_17&doctype=Standard
-URIDate 2025-03-27

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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Data Type:	na
Balance Type:
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- Details

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Data Type:	na
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- Details

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- Details

Name:	ifrs-full_RangeAxis=ifrs-full_WeightedAverageMember
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Data Type:	na
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- Details

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- Details

Name:	ifrs-full_BorrowingsByNameAxis=hln_EuroMediumTermNoteProgrammeMember
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Data Type:	na
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- Details

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- Details

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- Details

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BORROWINGS - Short term borrowings (Details) € in Millions, ¥ in Millions, £ in Millions, $ in Millions	Mar. 29, 2026 EUR (€)	Jun. 30, 2026 GBP (£)	Jun. 30, 2026 USD ($)	Jun. 30, 2026 EUR (€)	Jun. 30, 2026 CNY (¥)	Dec. 31, 2025 GBP (£)	Dec. 31, 2025 EUR (€)	Dec. 31, 2025 CNY (¥)
Borrowings
Current		£ 1,962				£ 836
Borrowings		8,252				8,609
Commercial paper
Borrowings
Current		325	$ 430			£ 0
Borrowings		£ 325
Commercial paper \| Euro
Borrowings
Nominal value \| €				€ 2,000
Commercial paper \| USD
Borrowings
Nominal value \| $			$ 10,000
Commercial paper \| Weighted average
Borrowings
Interest rate		4.50%	4.50%	4.50%	4.50%
Short-term bank loans \| Weighted average
Borrowings
Interest rate		2.90%	2.90%	2.90%	2.90%	2.90%	2.90%	2.90%
Pre-Separation EUR Medium Term Note
Borrowings
Current						£ 739	€ 850
Repayment of notes \| €	€ 850
Pre-Separation USD Notes
Borrowings
Current		£ 1,509	$ 2,000
Short-term notes in issue
Borrowings
Average effective pre-swap interest rate		3.40%	3.40%	3.40%	3.40%	1.30%	1.30%	1.30%
Average effective post-swap interest rate		3.00%	3.00%	3.00%	3.00%	3.60%	3.60%	3.60%
CNY short-term bank loans
Borrowings
Current		£ 55			¥ 491	£ 22		¥ 201