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Goodwill and Other Intangible Assets, Net - Changes in Carrying Amount of Goodwill (Details) $ in Millions	3 Months Ended
	Sep. 30, 2025 USD ($)
Goodwill [Line Items]
Balance as of June 30, 2025	$ 11,276
Foreign currency translation	1
Balance as of September 30, 2025	11,422
Global Flexible Packaging Solutions
Goodwill [Line Items]
Balance as of June 30, 2025	6,086
Foreign currency translation	5
Balance as of September 30, 2025	6,123
Global Rigid Packaging Solutions
Goodwill [Line Items]
Balance as of June 30, 2025	5,190
Foreign currency translation	(4)
Balance as of September 30, 2025	$ 5,299

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