Business Segment Information - Summary of Business (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) segment	Sep. 30, 2021 USD ($)
Business Segment Information
Number of reportable segments | segment			4
Net sales
Net sales	$ 3,951	$ 3,553	$ 11,801	$ 10,137
Reconciling items
Other	(8)	(14)	(26)	(67)
Business consolidation and other activities	163	(141)	(23)	(136)
Amortization of acquired intangibles	(40)	(45)	(124)	(135)
Earnings before interest and taxes	523	238	1,026	911
Interest expense	(79)	(68)	(216)	(201)
Debt refinancing and other costs		(1)	(2)	(1)
Total interest expense	(79)	(69)	(218)	(202)
Earnings before taxes	444	169	808	709
Undistributed corporate expenses	25	17	73	71
Operating segments
Net sales
Net sales	3,774	3,416	11,255	9,760
Comparable operating earnings
Reportable segment comparable operating earnings	401	431	1,177	1,228
Operating segments | Beverage packaging, North And Central America
Net sales
Net sales	1,800	1,519	5,184	4,339
Comparable operating earnings
Reportable segment comparable operating earnings	205	186	543	519
Reconciling items
Business consolidation and other activities	(36)		(37)	(1)
Operating segments | Beverage packaging, EMEA
Net sales
Net sales	1,031	937	3,106	2,639
Comparable operating earnings
Reportable segment comparable operating earnings	82	125	311	349
Reconciling items
Business consolidation and other activities	214	(2)	(225)	(5)
Operating segments | Beverage packaging, South America
Net sales
Net sales	466	462	1,494	1,401
Comparable operating earnings
Reportable segment comparable operating earnings	67	74	197	245
Reconciling items
Business consolidation and other activities	(9)	(9)	(31)	11
Operating segments | Aerospace
Net sales
Net sales	477	498	1,471	1,381
Comparable operating earnings
Reportable segment comparable operating earnings	47	46	126	115
Other
Net sales
Net sales	177	137	546	377
Reconciling items
Business consolidation and other activities	(6)	(130)	270	(141)
Rexam
Reconciling items
Amortization of acquired intangibles	$ (33)	$ (38)	$ (102)	$ (114)