Earnings and Dividends per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings and Dividends Per Share
Net earnings attributable to Ball Corporation	$ 179	$ 241	$ 581	$ 358
Basic weighted average common shares	325,876	326,549	327,097	325,965
Effect of dilutive securities (in shares)	5,719	6,105	5,841	6,187
Weighted average shares applicable to diluted earnings per share	331,595	332,654	332,938	332,152
Per basic share (in dollars per share)	$ 0.55	$ 0.74	$ 1.78	$ 1.10
Per diluted share (in dollars per share)	0.54	0.72	1.75	1.08
Dividends declared and paid
Dividends paid (in dollars per share)	$ 0.20	$ 0.15	$ 0.50	$ 0.45