Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Goodwill
Balance at the beginning of the period	$ 4,235	$ 4,378
Business disposition		(101)
Effects of currency exchange	53	(42)
Other	2
Balance at the end of the period	4,290	4,235
Decrease in goodwill		101
Beverage packaging, North And Central America
Goodwill
Balance at the beginning of the period	1,275	1,275
Other	2
Balance at the end of the period	1,277	1,275
Beverage packaging, EMEA
Goodwill
Balance at the beginning of the period	1,342	1,483
Business disposition		(101)
Effects of currency exchange	36	(40)
Balance at the end of the period	1,378	1,342
Decrease in goodwill		101
Beverage packaging, South America
Goodwill
Balance at the beginning of the period	1,298	1,298
Balance at the end of the period	1,298	1,298
Aerospace
Goodwill
Balance at the beginning of the period	40	40
Balance at the end of the period	40	40
Other
Goodwill
Balance at the beginning of the period	280	282
Effects of currency exchange	17	(2)
Balance at the end of the period	297	$ 280
Aluminum beverage packaging business in Russia | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Goodwill
Business disposition	(101)
Decrease in goodwill	$ 101