Segments - Disaggregation of Revenue by Geography (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Net sales	$ 23,506	$ 15,009	$ 13,640
Global Flexible Packaging Solutions
Disaggregation of Revenue [Line Items]
Net sales	12,829	10,066	9,486
Global Rigid Packaging Solutions
Disaggregation of Revenue [Line Items]
Net sales	10,677	4,943	4,154
North America
Disaggregation of Revenue [Line Items]
Net sales	11,725	7,194	6,603
North America \| Global Flexible Packaging Solutions
Disaggregation of Revenue [Line Items]
Net sales	6,346	4,429	4,095
North America \| Global Rigid Packaging Solutions
Disaggregation of Revenue [Line Items]
Net sales	5,379	2,765	2,508
Latin America
Disaggregation of Revenue [Line Items]
Net sales	1,880	1,790	1,913
Latin America \| Global Flexible Packaging Solutions
Disaggregation of Revenue [Line Items]
Net sales	250	199	267
Latin America \| Global Rigid Packaging Solutions
Disaggregation of Revenue [Line Items]
Net sales	1,630	1,591	1,646
Europe
Disaggregation of Revenue [Line Items]
Net sales	7,841	4,321	3,507
Europe \| Global Flexible Packaging Solutions
Disaggregation of Revenue [Line Items]
Net sales	4,536	3,792	3,507
Europe \| Global Rigid Packaging Solutions
Disaggregation of Revenue [Line Items]
Net sales	3,305	529	0
Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	2,060	1,704	1,617
Asia Pacific \| Global Flexible Packaging Solutions
Disaggregation of Revenue [Line Items]
Net sales	1,697	1,646	1,617
Asia Pacific \| Global Rigid Packaging Solutions
Disaggregation of Revenue [Line Items]
Net sales	$ 363	$ 58	$ 0

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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+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details