Earnings and Dividends per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings and Dividends Per Share
Net earnings attributable to Ball Corporation	$ 200	$ 23
Basic weighted average common shares	327,811	325,346
Effect of dilutive securities (in shares)	5,862	6,980
Weighted average shares applicable to diluted earnings per share	333,673	332,326
Per basic share (in dollars per share)	$ 0.61	$ 0.07
Per diluted share (in dollars per share)	$ 0.60	$ 0.07
Options excluded from EPS calculation
Number of outstanding options excluded from computation of diluted earnings per share	1,000	1,000
Dividends declared and paid
Dividends paid (in dollars per share)	$ 0.15	$ 0.15