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Financial assets and liabilities - Commodity forward contracts (Details) - Commodity forward contracts $ in Millions | Dec. 31, 2024 USD ($)
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Disclosure of detailed information about financial instruments [line items] |
Hedge ratio | 1
Level 2 |
Disclosure of detailed information about financial instruments [line items] |
Fair value of contracts when initiated | $ 0

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- Definition Represents the fair value of contracts when initiated. + References No definition available. + Details
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Balance Type: | debit
Period Type: | instant

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- Definition Represents the hedge ratio. + References No definition available. + Details
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Namespace Prefix: | ambp_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

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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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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Balance Type: |
Period Type: |