Subsidiary Guarantees of Debt (Details 2) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Current assets
Cash and cash equivalents	$ 227.3	$ 191.4	$ 155.3	$ 416.0
Receivables, net	1,192.0	957.1
Inventories, net	929.0	1,016.7
Deferred taxes and other current assets	156.8	148.3
Total current assets	2,505.1	2,313.5
Noncurrent assets
Property, plant and equipment, net	2,483.4	2,430.7
Goodwill	2,209.2	2,254.5
Intangibles and other assets, net	655.2	572.3
Total assets	7,852.9	7,571.0
Current liabilities
Short-term debt and current portion of long-term debt	278.2	175.1
Accounts payable	1,444.4	1,340.0
Accrued employee costs	192.7	269.9
Other current liabilities	277.0	221.8
Total current liabilities	2,192.3	2,006.8
Noncurrent liabilities
Long-term debt	2,982.1	2,993.8
Employee benefit obligations	1,166.5	1,178.3
Deferred taxes and other liabilities	169.2	152.5
Total liabilities	6,510.1	6,331.4
Common stock	1,160.4	1,131.3
Retained earnings	4,492.7	4,346.9
Accumulated other comprehensive earnings (loss)	(603.7)	(522.1)
Treasury stock, at cost	(3,910.8)	(3,923.0)
Total Ball Corporation shareholders' equity	1,138.6	1,033.1
Noncontrolling interests	204.2	206.5
Total shareholders' equity	1,342.8	1,239.6
Total liabilities and shareholders' equity	7,852.9	7,571.0
Ball Corporation
Current assets
Cash and cash equivalents	2.6	1.5	4.3	218.6
Receivables, net	12.0	43.7
Intercompany receivables	220.1	94.0
Deferred taxes and other current assets	37.1	3.1
Total current assets	271.8	142.3
Noncurrent assets
Property, plant and equipment, net	14.4	15.1
Investment in subsidiaries	2,846.0	3,152.7
Intangibles and other assets, net	314.9	232.4
Total assets	3,447.1	3,542.5
Current liabilities
Short-term debt and current portion of long-term debt	114.7	1.9
Accounts payable	7.3	7.1
Intercompany payables	99.7	99.7
Accrued employee costs	14.7	22.3
Other current liabilities	78.4	51.6
Total current liabilities	314.8	182.6
Noncurrent liabilities
Long-term debt	2,842.1	2,750.0
Employee benefit obligations	332.4	329.4
Intercompany Long Term Notes	(1,087.6)	(646.4)
Deferred taxes and other liabilities	(93.2)	(106.2)
Total liabilities	2,308.5	2,509.4
Common stock	1,160.4	1,131.3
Retained earnings	4,492.7	4,346.9
Accumulated other comprehensive earnings (loss)	(603.7)	(522.1)
Treasury stock, at cost	(3,910.8)	(3,923.0)
Total Ball Corporation shareholders' equity	1,138.6	1,033.1
Total shareholders' equity	1,138.6	1,033.1
Total liabilities and shareholders' equity	3,447.1	3,542.5
Guarantor Subsidiaries
Current assets
Cash and cash equivalents		0.4	0.3	0.3
Receivables, net	281.2	241.3
Intercompany receivables	105.9	99.9
Inventories, net	538.9	575.0
Deferred taxes and other current assets	77.9	75.1
Total current assets	1,003.9	991.7
Noncurrent assets
Property, plant and equipment, net	999.7	968.0
Investment in subsidiaries	2,214.9	2,212.2
Goodwill	966.5	931.0
Intangibles and other assets, net	105.1	93.5
Total assets	5,290.1	5,196.4
Current liabilities
Short-term debt and current portion of long-term debt	0.2	7.6
Accounts payable	799.3	732.5
Intercompany payables	1.0	1.5
Accrued employee costs	103.6	155.6
Other current liabilities	56.5	38.0
Total current liabilities	960.6	935.2
Noncurrent liabilities
Long-term debt	0.2	0.2
Employee benefit obligations	452.1	432.7
Intercompany Long Term Notes	803.3	463.1
Deferred taxes and other liabilities	158.4	138.7
Total liabilities	2,374.6	1,969.9
Common stock	1,856.6	2,293.5
Retained earnings	1,599.1	1,389.4
Accumulated other comprehensive earnings (loss)	(540.2)	(456.4)
Total Ball Corporation shareholders' equity	2,915.5	3,226.5
Total shareholders' equity	2,915.5	3,226.5
Total liabilities and shareholders' equity	5,290.1	5,196.4
Non-Guarantor Subsidiaries
Current assets
Cash and cash equivalents	224.7	189.5	$ 150.7	$ 197.1
Receivables, net	898.8	672.1
Intercompany receivables	2.0	4.3
Inventories, net	390.1	441.7
Deferred taxes and other current assets	41.8	70.1
Total current assets	1,557.4	1,377.7
Noncurrent assets
Property, plant and equipment, net	1,469.3	1,447.6
Investment in subsidiaries	78.6	78.6
Goodwill	1,242.7	1,323.5
Intangibles and other assets, net	235.2	246.4
Total assets	4,583.2	4,473.8
Current liabilities
Short-term debt and current portion of long-term debt	163.3	165.6
Accounts payable	637.8	600.4
Intercompany payables	228.1	97.0
Accrued employee costs	74.4	92.0
Other current liabilities	142.1	132.2
Total current liabilities	1,245.7	1,087.2
Noncurrent liabilities
Long-term debt	139.8	243.6
Employee benefit obligations	382.0	416.2
Intercompany Long Term Notes	283.5	183.3
Deferred taxes and other liabilities	104.0	120.0
Total liabilities	2,155.0	2,050.3
Common stock	534.0	534.0
Preferred stock	4.8	4.8
Retained earnings	1,933.7	1,839.9
Accumulated other comprehensive earnings (loss)	(248.5)	(161.7)
Total Ball Corporation shareholders' equity	2,224.0	2,217.0
Noncontrolling interests	204.2	206.5
Total shareholders' equity	2,428.2	2,423.5
Total liabilities and shareholders' equity	4,583.2	4,473.8
Eliminating Adjustments
Current assets
Intercompany receivables	(328.0)	(198.2)
Total current assets	(328.0)	(198.2)
Noncurrent assets
Investment in subsidiaries	(5,139.5)	(5,443.5)
Total assets	(5,467.5)	(5,641.7)
Current liabilities
Intercompany payables	(328.8)	(198.2)
Total current liabilities	(328.8)	(198.2)
Noncurrent liabilities
Intercompany Long Term Notes	0.8
Total liabilities	(328.0)	(198.2)
Common stock	(2,390.6)	(2,827.5)
Preferred stock	(4.8)	(4.8)
Retained earnings	(3,532.8)	(3,229.3)
Accumulated other comprehensive earnings (loss)	788.7	618.1
Total Ball Corporation shareholders' equity	(5,139.5)	(5,443.5)
Total shareholders' equity	(5,139.5)	(5,443.5)
Total liabilities and shareholders' equity	$ (5,467.5)	$ (5,641.7)