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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

No definition available.

Name:	ambp_IfrsLineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	ambp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents Increase (Decrease) In lease liability due to foreign currency.

No definition available.

Name:	ambp_IncreaseDecreaseInLeaseLiabilitiesDueToForeignCurrencyMovements
Namespace Prefix:	ambp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of liabilities related to new leases entered into by the entity during the period.

No definition available.

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Namespace Prefix:	ambp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The maximum available capacity to draw down.

No definition available.

Name:	ambp_MaximumCapacityAvailable
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_Borrowings
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The interest rate on borrowings. [Refer: Borrowings]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard
-URIDate 2024-03-27

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Data Type:	dtr-2022:percentItemType
Balance Type:	na
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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.

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
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The decrease in right-of-use assets resulting from disposals. [Refer: Right-of-use assets]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 16
-IssueDate 2024-01-01
-Paragraph 73
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_DisposalsRightofuseAssets
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2024-01-01
-Paragraph 47
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_LeaseLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The cash outflow for payment of lease liabilities, classified as financing activities. [Refer: Lease liabilities]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 17
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_17_e&doctype=Standard
-URIDate 2024-03-27

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The cash inflow from borrowings obtained. [Refer: Borrowings]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 17
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_17_c&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=ambp_ArdaghGroupMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ifrs-full_BorrowingsByNameAxis=ambp_SeniorSecuredGreenNotes6.000PercentDue2027Member
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ifrs-full_BorrowingsByNameAxis=ambp_SeniorSecuredNotes3.250PercentDue2028Member
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ifrs-full_BorrowingsByNameAxis=ambp_SeniorSecuredNotes3.000PercentDue2029Member
Namespace Prefix:
Data Type:	na
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Name:	ifrs-full_BorrowingsByNameAxis=ambp_SeniorSecuredNotes4.000PercentDue2029Member
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Data Type:	na
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Name:	ifrs-full_BorrowingsByNameAxis=ambp_SeniorSecuredNotes2.000PercentDue2028Member
Namespace Prefix:
Data Type:	na
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Name:	ifrs-full_BorrowingsByNameAxis=ambp_GlobalAssetBasedLoanFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ifrs-full_BorrowingsByNameAxis=ambp_SeniorSecuredTermLoanMember
Namespace Prefix:
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