Earnings and Dividends Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings and Dividends Per Share
Net earnings attributable to Ball Corporation	$ 160.4		$ 153.1		$ 181.1	$ 246.6
Basic weighted average common shares	137,801		139,012		137,446	139,704
Effect of dilutive securities (in shares)	3,739		3,848		3,856	3,768
Weighted average shares applicable to diluted earnings per share	141,540		142,860		141,302	143,472
Basic (in dollars per share)	$ 1.16		$ 1.10		$ 1.32	$ 1.77
Diluted (in dollars per share)	$ 1.13		$ 1.07		$ 1.28	$ 1.72
Number of outstanding options excluded from computation of diluted earnings per share	1,200		0		1,200	1,300
Dividends declared (in dollars per share)	$ 0.13	$ 0.13	$ 0.13	$ 0.13
Dividends paid (in dollars per share)	$ 0.13	$ 0.13	$ 0.13	$ 0.13