Aggregate dividends paid during the period for each share of common stock outstanding.

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Pro forma basic earnings per share or earnings per unit, which is commonly presented in initial public offerings based on the terms of the offering.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Pro forma diluted earnings per share, which is commonly presented in initial public offerings.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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The weighted average number of shares or units and dilutive common stock or unit equivalents outstanding in the calculation of proforma diluted earnings per share (earnings per unit), which is commonly presented in initial public offerings based on the terms of the offering.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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The weighted average number of shares (units) outstanding in the calculation of pro forma basic earnings per share (earnings per unit), which is commonly presented in initial public offerings based on the terms of the offering.

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Adjustment to the weighted average number of basic shares outstanding to convert this to a pro forma presentation.

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Earnings and Dividends Per Share - Pro Forma (Details) $ / shares in Units, shares in Thousands, $ in Millions			3 Months Ended
	May 16, 2017 $ / shares	Apr. 26, 2017	Mar. 31, 2017 USD ($) $ / shares shares	Mar. 31, 2016 USD ($) $ / shares shares
Earnings per share, pro forma
Net earnings attributable to Ball Corporation \| $			$ 68	$ (127)
Basic weighted average common shares \| shares			350,048	283,586
Effect of dilutive securities \| shares			7,886
Weighted average shares applicable to diluted earnings per share \| shares			357,934	283,586
Per basic share (in dollars per share)			$ 0.19	$ (0.45)
Per diluted share (in dollars per share)			0.19	(0.45)
increased the quarterly cash dividend (in dollars per share)			$ 0.13	$ 0.13
Subsequent Event.
Subsequent event
Stockholders' Equity Note, Stock Split, Conversion Ratio		2
Earnings per share, pro forma
increased the quarterly cash dividend	54.00%
increased the quarterly cash dividend (in dollars per share)	$ 10.00