Cover	Aug. 14, 2025
Cover [Abstract]
Document Type	8-K
Document Period End Date	Aug. 14, 2025
Entity Registrant Name	AMCOR PLC
Entity Incorporation, State or Country Code	Y9
Entity File Number	001-38932
Entity Tax Identification Number	98-1455367
Entity Address, Address Line One	83 Tower Road North
Entity Address, City or Town	Warmley, Bristol
Entity Address, Country	GB
Entity Address, Postal Zip Code	BS30 8XP
Country Region	44
City Area Code	117
Local Phone Number	9753200
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Entity Listings [Line Items]
Country Region	44
Entity Emerging Growth Company	false
Entity Central Index Key	0001748790
Amendment Flag	false
Ordinary Shares, par value $0.01 per share
Entity Listings [Line Items]
Title of 12(b) Security	Ordinary Shares, par value $0.01 per share
Trading Symbol	AMCR
Security Exchange Name	NYSE
1.125% Guaranteed Senior Notes Due 2027
Entity Listings [Line Items]
Title of 12(b) Security	1.125% Guaranteed Senior Notes Due 2027
Trading Symbol	AUKF/27
Security Exchange Name	NYSE
5.450% Guaranteed Senior Notes Due 2029
Entity Listings [Line Items]
Title of 12(b) Security	5.450% Guaranteed Senior Notes Due 2029
Trading Symbol	AMCR/29
Security Exchange Name	NYSE
3.950% Guaranteed Senior Notes Due 2032
Entity Listings [Line Items]
Title of 12(b) Security	3.950% Guaranteed Senior Notes Due 2032
Trading Symbol	AMCR/32
Security Exchange Name	NYSE

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Area code of city

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Cover page.

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For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

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The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

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Address Line 1 such as Attn, Building Name, Street Name

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ISO 3166-1 alpha-2 country code.

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A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Indicate if registrant meets the emerging growth company criteria.

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Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

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Two-character EDGAR code representing the state or country of incorporation.

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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.

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The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

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The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

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Local phone number for entity.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

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Name of the Exchange on which a security is registered.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

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Trading symbol of an instrument as listed on an exchange.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

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