Business Segment Information - Summary of Business (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Business Segment Information
Number of Reportable Segments | segment	4
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Net sales	$ 13,811	$ 11,781	$ 11,474
Reconciling items
Other	(65)	(55)	(3)
Business consolidation and other activities	(142)	(262)	(244)
Amortization of acquired intangibles	(180)	(180)	(187)
Earnings before interest and taxes	1,291	1,003	932
Interest expense	(270)	(275)	(317)
Debt refinancing and other costs	(13)	(41)	(7)
Total interest expense	(283)	(316)	(324)
Earnings before taxes	1,008	687	608
Undistributed corporate expenses	72	58	50
Depreciation and Amortization
Depreciation and amortization	700	668	678
Capital Expenditures
Capital expenditures	1,726	1,113	598
Operating Segments
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Net sales	13,292	11,457	10,764
Segment Reporting Information, Operating Income (Loss) [Abstract]
Reportable segment comparable operating earnings	1,650	1,470	1,334
Depreciation and Amortization
Depreciation and amortization	629	609	615
Capital Expenditures
Capital expenditures	1,534	962	532
Operating Segments | Beverage packaging, North And Central America
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Net sales	5,856	5,076	4,758
Segment Reporting Information, Operating Income (Loss) [Abstract]
Reportable segment comparable operating earnings	681	683	555
Reconciling items
Business consolidation and other activities	(6)	(5)	(14)
Depreciation and Amortization
Depreciation and amortization	200	184	190
Capital Expenditures
Capital expenditures	697	367	139
Operating Segments | Metal beverage packaging, Europe
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Net sales	3,509	2,945	2,857
Segment Reporting Information, Operating Income (Loss) [Abstract]
Reportable segment comparable operating earnings	452	354	351
Reconciling items
Business consolidation and other activities	(7)	(10)	(39)
Depreciation and Amortization
Depreciation and amortization	223	230	246
Capital Expenditures
Capital expenditures	305	262	147
Operating Segments | Beverage packaging, South America
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Net sales	2,016	1,695	1,670
Segment Reporting Information, Operating Income (Loss) [Abstract]
Reportable segment comparable operating earnings	348	280	288
Reconciling items
Business consolidation and other activities	9	1	15
Depreciation and Amortization
Depreciation and amortization	141	142	136
Capital Expenditures
Capital expenditures	334	159	150
Operating Segments | Aerospace & technologies
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Net sales	1,911	1,741	1,479
Segment Reporting Information, Operating Income (Loss) [Abstract]
Reportable segment comparable operating earnings	169	153	140
Depreciation and Amortization
Depreciation and amortization	65	53	43
Capital Expenditures
Capital expenditures	198	174	96
Other
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Net sales	519	324	710
Reconciling items
Business consolidation and other activities	(138)	(248)	(206)
Depreciation and Amortization
Depreciation and amortization	71	59	63
Capital Expenditures
Capital expenditures	192	151	66
Rexam
Reconciling items
Amortization of acquired intangibles	$ (152)	$ (150)	$ (155)