Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share
Net earnings attributable to Ball Corporation	$ 55.3	$ 44.5	$ 160.4	$ 20.7	$ 76.0	$ 147.4	$ 153.1	$ 93.5	$ 280.9	$ 470.0	$ 406.8
Basic weighted average common shares									137,300	138,508	145,943
Effect of dilutive securities (in shares)									3,684	3,922	3,280
Weighted average shares applicable to diluted earnings per share									140,984	142,430	149,223
Basic (in dollars per share)	$ 0.40	$ 0.32	$ 1.16	$ 0.15	$ 0.56	$ 1.07	$ 1.10	$ 0.67	$ 2.05	$ 3.39	$ 2.79
Diluted (in dollars per share)	$ 0.39	$ 0.32	$ 1.13	$ 0.15	$ 0.54	$ 1.04	$ 1.07	$ 0.65	$ 1.99	$ 3.30	$ 2.73
Number of outstanding options excluded from computation of diluted earnings per share									1,200	0	1,300