Business Segment Information - Summary of Business (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Business Segment Information
Number of reportable segments | segment	4
Net sales
Net sales	$ 14,029	$ 15,349	$ 13,811
Reconciling items
Other	12	(25)	(65)
Business consolidation and other activities	(153)	(71)	(142)
Amortization of acquired intangibles	(158)	(165)	(180)
Earnings before interest and taxes	1,273	1,214	1,291
Interest expense	(459)	(312)	(270)
Debt refinancing and other costs		(18)	(13)
Total interest expense	(459)	(330)	(283)
Earnings before taxes	814	884	1,008
Undistributed corporate expenses	74	82	72
Depreciation and Amortization
Depreciation and amortization	686	672	700
Capital Expenditures
Capital expenditures	1,045	1,651	1,726
Operating segments
Net sales
Net sales	13,285	14,635	13,292
Comparable operating earnings
Reportable segment comparable operating earnings	1,549	1,445	1,650
Depreciation and Amortization
Depreciation and amortization	624	625	629
Capital Expenditures
Capital expenditures	924	1,488	1,534
Operating segments | Beverage packaging, North And Central America
Net sales
Net sales	5,963	6,696	5,856
Comparable operating earnings
Reportable segment comparable operating earnings	710	642	681
Reconciling items
Business consolidation and other activities	(78)	(74)	(6)
Depreciation and Amortization
Depreciation and amortization	220	219	200
Capital Expenditures
Capital expenditures	311	621	697
Operating segments | Beverage packaging, EMEA
Net sales
Net sales	3,395	3,854	3,509
Comparable operating earnings
Reportable segment comparable operating earnings	354	358	452
Reconciling items
Business consolidation and other activities	5	(227)	(7)
Depreciation and Amortization
Depreciation and amortization	178	185	223
Capital Expenditures
Capital expenditures	378	458	305
Operating segments | Beverage packaging, South America
Net sales
Net sales	1,960	2,108	2,016
Comparable operating earnings
Reportable segment comparable operating earnings	266	275	348
Reconciling items
Business consolidation and other activities	(31)	(29)	9
Depreciation and Amortization
Depreciation and amortization	145	143	141
Capital Expenditures
Capital expenditures	129	267	334
Operating segments | Aerospace
Net sales
Net sales	1,967	1,977	1,911
Comparable operating earnings
Reportable segment comparable operating earnings	219	170	169
Depreciation and Amortization
Depreciation and amortization	81	78	65
Capital Expenditures
Capital expenditures	106	142	198
Other.
Net sales
Net sales	744	714	519
Reconciling items
Business consolidation and other activities	(49)	259	(138)
Depreciation and Amortization
Depreciation and amortization	62	47	71
Capital Expenditures
Capital expenditures	121	163	192
Rexam
Reconciling items
Amortization of acquired intangibles	$ (135)	$ (135)	$ (152)