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Acquisitions and Dispositions - Dispositions (Details) € in Millions, $ in Millions		1 Months Ended			3 Months Ended		9 Months Ended
	Aug. 27, 2025 USD ($)	Feb. 28, 2025 USD ($)	Oct. 31, 2024 USD ($)	Oct. 31, 2024 EUR (€)	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Mar. 21, 2025	Oct. 31, 2024 EUR (€)	Feb. 16, 2024 USD ($)
Acquisitions and Dispositions
Gain on sale of disposal group							$ (4)	$ 4,694
Oasis Venture Holdings LLC
Acquisitions and Dispositions
Percentage of ownership in a joint venture									49.00%
Aluminum cups business
Acquisitions and Dispositions
Additional loss							8
Disposal group, disposed of by sale, not discontinued operations \| Ball united arab can manufacturing company
Acquisitions and Dispositions
Sale of ownership interest	41.00%
Ownership interest retained before disposal	51.00%
Total cash consideration on sale of business	$ 74
Proceeds received from sale of businesses	$ 66
Gain on sale of disposal group					$ 86		$ 86
Ownership interest retained	10.00%
Disposal group, held-for-sale, not discontinued operations \| Aluminum cups business
Acquisitions and Dispositions
Write down at business disposal						$ 233
Discontinued Operations, Disposed of by Sale \| Aerospace Business
Acquisitions and Dispositions
Total cash consideration on sale of business											$ 5,600
Alucan Entec, S.A
Acquisitions and Dispositions
Total consideration \| €				€ 82
Cash consideration			$ 80	€ 75
Additional paid over			$ 8							€ 7
Additional consideration period			3 years	3 years
Floridan Can Manufacturing
Acquisitions and Dispositions
Total consideration		$ 160