Earnings and Dividends Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings and Dividends Per Share
Net earnings attributable to Ball Corporation	$ 59			$ 48			$ 303	$ 215
Basic weighted average common shares	342,982			350,327			347,113	350,481
Effect of dilutive securities (in shares)	6,727			8,229			6,642	8,011
Weighted average shares applicable to diluted earnings per share	349,709			358,556			353,755	358,492
Basic (in dollars per share)	$ 0.17			$ 0.14			$ 0.87	$ 0.61
Diluted (in dollars per share)	$ 0.17			$ 0.13			$ 0.86	$ 0.60
Number of outstanding options excluded from computation of diluted earnings per share	4,000			3,000			4,000	5,000
Dividends declared (in dollars per share)	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.065
Dividends paid (in dollars per share)	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.065