Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Dec. 31, 2020
Goodwill
Balance at the beginning of the period	$ 4,484
Effects of currency exchange	(68)
Balance at the end of the period	4,416
Accumulated impairment, goodwill			$ 62	$ 62
Goodwill	4,484		4,416	4,484
Beverage packaging, North And Central America
Goodwill
Balance at the beginning of the period	1,275
Balance at the end of the period	1,275
Goodwill	1,275		1,275	1,275
Beverage packaging, South America
Goodwill
Balance at the beginning of the period	1,298
Balance at the end of the period	1,298
Goodwill	1,298		1,298	1,298
Beverage packaging, EMEA
Goodwill
Balance at the beginning of the period	1,573
Effects of currency exchange	(56)
Balance at the end of the period	1,517
Goodwill	1,517		1,517	1,573
Aerospace
Goodwill
Balance at the beginning of the period	40
Balance at the end of the period	40
Goodwill	40		40	40
Other
Goodwill
Balance at the beginning of the period	298
Impairment of goodwill		$ 62
Effects of currency exchange	(12)
Balance at the end of the period	286
Goodwill	$ 286		$ 286	$ 298