Goodwill (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets, Net

Schedule of goodwill

($ in millions)	​ Beverage Packaging, North & Central America		​ Beverage Packaging, EMEA		​ Beverage Packaging, South America		​ Aerospace		Other		Total
Balance at December 31, 2019	$	1,275	$	1,500	$	1,298	$	40	$	306	$	4,419
Additions		—		—		—		—		49		49
Goodwill impairment		—		—		—		—		(62)		(62)
Effects of currency exchange		—		73		—		—		5		78
Balance at December 31, 2020	$	1,275	$	1,573	$	1,298	$	40	$	298	$	4,484
Effects of currency exchange		—		(90)		—		—		(16)		(106)
Balance at December 31, 2021	$	1,275	$	1,483	$	1,298	$	40	$	282	$	4,378