Business Segment Information - Summary of Business (Details) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Nov. 30, 2024	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) segment	Jun. 30, 2024 USD ($)
Business Segment Information
Number of reportable segments | segment				3
Net sales
Net sales		$ 3,338	$ 2,959	$ 6,435	$ 5,833
Reconciling items
Other		8	2	(7)	(70)
Business consolidation and other activities		(12)	(60)	(25)	(86)
Amortization of acquired intangibles		(38)	(36)	(74)	(78)
Interest expense		(81)	(68)	(151)	(161)
Debt refinancing and other costs			(1)		(3)
Earnings before taxes		268	200	497	301
Undistributed corporate expenses		30	21	73	117
Corporate interest income		5	18	12	44
Incremental compensation cost including cash bonuses and stock-based compensation			3		82
Depreciation and amortization
Depreciation and amortization		155	152	305	310
Operating Segments
Net sales
Net sales		3,140	2,771	6,050	5,466
Comparable segment operating earnings
Reportable segment comparable operating earnings		388	360	748	692
Depreciation and amortization
Depreciation and amortization		141	137	280	279
Operating Segments | Beverage packaging, North And Central America
Net sales
Net sales		1,613	1,469	3,076	2,872
Comparable segment operating earnings
Reportable segment comparable operating earnings		208	210	403	402
Depreciation and amortization
Depreciation and amortization		56	53	112	107
Operating Segments | Beverage packaging, EMEA
Net sales
Net sales		1,050	880	1,953	1,690
Comparable segment operating earnings
Reportable segment comparable operating earnings		129	113	225	198
Depreciation and amortization
Depreciation and amortization		49	46	96	93
Operating Segments | Beverage packaging, South America
Net sales
Net sales		477	422	1,021	904
Comparable segment operating earnings
Reportable segment comparable operating earnings		51	37	120	92
Depreciation and amortization
Depreciation and amortization		36	38	72	79
Other
Net sales
Net sales		198	188	385	367
Depreciation and amortization
Depreciation and amortization		14	15	25	31
Reconciling items
Reconciling items
Corporate interest income			12	1	29
Rexam
Reconciling items
Amortization of acquired intangibles		$ (35)	$ (33)	$ (68)	$ (71)
Disposal group, held-for-sale or disposed of by sale, not discontinued operations | Ball united arab can manufacturing company
Business Segment Information
Ownership interest retained before disposal	51.00%
Ownership interest retained	10.00%