Earnings and Dividends Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings and Dividends Per Share
Net earnings attributable to Ball Corporation	$ 119	$ 99	$ 244	$ 167
Basic weighted average common shares	348,221	351,066	349,212	350,560
Effect of dilutive securities (in shares)	6,683	7,913	7,064	7,946
Weighted average shares applicable to diluted earnings per share	354,904	358,979	356,276	358,506
Basic (in dollars per share)	$ 0.34	$ 0.28	$ 0.70	$ 0.48
Diluted (in dollars per share)	$ 0.34	$ 0.28	$ 0.68	$ 0.47
Number of outstanding options excluded from computation of diluted earnings per share	5,000	3,000	5,000	5,000
Dividends paid (in dollars per share)	$ 0.10	$ 0.10	$ 0.20	$ 0.165