Subsidiary Guarantees of Debt (Details 2) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Current assets
Cash and cash equivalents	$ 228.8	$ 191.4	$ 175.4	$ 416.0
Receivables, net	1,043.7	957.1
Inventories, net	1,033.2	1,016.7
Deferred taxes and other current assets	162.2	148.3
Total current assets	2,467.9	2,313.5
Noncurrent assets
Property, plant and equipment, net	2,423.6	2,430.7
Goodwill	2,177.8	2,254.5
Intangibles and other assets, net	591.2	572.3
Total assets	7,660.5	7,571.0
Current liabilities
Short-term debt and current portion of long-term debt	344.7	175.1
Accounts payable	1,271.2	1,340.0
Accrued employee costs	180.1	269.9
Other current liabilities	243.3	221.8
Total current liabilities	2,039.3	2,006.8
Noncurrent liabilities
Long-term debt	3,152.1	2,993.8
Employee benefit obligations	1,132.3	1,178.3
Deferred taxes and other liabilities	183.4	152.5
Total liabilities	6,507.1	6,331.4
Common stock	1,149.8	1,131.3
Retained earnings	4,349.8	4,346.9
Accumulated other comprehensive earnings (loss)	(642.1)	(522.1)
Treasury stock, at cost	(3,916.8)	(3,923.0)
Total Ball Corporation shareholders' equity	940.7	1,033.1
Noncontrolling interests	212.7	206.5
Total shareholders' equity	1,153.4	1,239.6
Total liabilities and shareholders' equity	7,660.5	7,571.0
Ball Corporation
Current assets
Cash and cash equivalents	0.3	1.5	0.6	218.6
Receivables, net	20.4	43.7
Intercompany receivables	179.4	94.0
Deferred taxes and other current assets	32.9	3.1
Total current assets	233.0	142.3
Noncurrent assets
Property, plant and equipment, net	14.7	15.1
Investment in subsidiaries	3,129.9	3,152.7
Intangibles and other assets, net	251.7	232.4
Total assets	3,629.3	3,542.5
Current liabilities
Short-term debt and current portion of long-term debt	123.9	1.9
Accounts payable	23.6	7.1
Intercompany payables	98.0	99.7
Accrued employee costs	36.6	22.3
Other current liabilities	62.1	51.6
Total current liabilities	344.2	182.6
Noncurrent liabilities
Long-term debt	3,012.9	2,750.0
Employee benefit obligations	317.8	329.4
Intercompany Long Term Notes	(904.6)	(646.4)
Deferred taxes and other liabilities	(81.7)	(106.2)
Total liabilities	2,688.6	2,509.4
Common stock	1,149.8	1,131.3
Retained earnings	4,349.8	4,346.9
Accumulated other comprehensive earnings (loss)	(642.1)	(522.1)
Treasury stock, at cost	(3,916.8)	(3,923.0)
Total Ball Corporation shareholders' equity	940.7	1,033.1
Total shareholders' equity	940.7	1,033.1
Total liabilities and shareholders' equity	3,629.3	3,542.5
Guarantor Subsidiaries
Current assets
Cash and cash equivalents	0.4	0.4	0.4	0.3
Receivables, net	257.5	241.3
Intercompany receivables	105.9	99.9
Inventories, net	620.5	575.0
Deferred taxes and other current assets	77.4	75.1
Total current assets	1,061.7	991.7
Noncurrent assets
Property, plant and equipment, net	990.4	968.0
Investment in subsidiaries	2,127.2	2,212.2
Goodwill	970.4	931.0
Intangibles and other assets, net	102.2	93.5
Total assets	5,251.9	5,196.4
Current liabilities
Short-term debt and current portion of long-term debt	0.3	7.6
Accounts payable	703.0	732.5
Intercompany payables		1.5
Accrued employee costs	76.9	155.6
Other current liabilities	53.6	38.0
Total current liabilities	833.8	935.2
Noncurrent liabilities
Long-term debt	0.2	0.2
Employee benefit obligations	444.6	432.7
Intercompany Long Term Notes	608.3	463.1
Deferred taxes and other liabilities	166.0	138.7
Total liabilities	2,052.9	1,969.9
Common stock	2,293.5	2,293.5
Retained earnings	1,483.0	1,389.4
Accumulated other comprehensive earnings (loss)	(577.5)	(456.4)
Total Ball Corporation shareholders' equity	3,199.0	3,226.5
Total shareholders' equity	3,199.0	3,226.5
Total liabilities and shareholders' equity	5,251.9	5,196.4
Non-Guarantor Subsidiaries
Current assets
Cash and cash equivalents	228.1	189.5	174.4	197.1
Receivables, net	765.8	672.1
Intercompany receivables	1.0	4.3
Inventories, net	412.7	441.7
Deferred taxes and other current assets	51.9	70.1
Total current assets	1,459.5	1,377.7
Noncurrent assets
Property, plant and equipment, net	1,418.5	1,447.6
Investment in subsidiaries	78.6	78.6
Goodwill	1,207.4	1,323.5
Intangibles and other assets, net	237.3	246.4
Total assets	4,401.3	4,473.8
Current liabilities
Short-term debt and current portion of long-term debt	220.5	165.6
Accounts payable	544.6	600.4
Intercompany payables	187.9	97.0
Accrued employee costs	66.6	92.0
Other current liabilities	127.6	132.2
Total current liabilities	1,147.2	1,087.2
Noncurrent liabilities
Long-term debt	139.0	243.6
Employee benefit obligations	369.9	416.2
Intercompany Long Term Notes	296.6	183.3
Deferred taxes and other liabilities	99.1	120.0
Total liabilities	2,051.8	2,050.3
Common stock	534.0	534.0
Preferred stock	4.8	4.8
Retained earnings	1,880.8	1,839.9
Accumulated other comprehensive earnings (loss)	(282.8)	(161.7)
Total Ball Corporation shareholders' equity	2,136.8	2,217.0
Noncontrolling interests	212.7	206.5
Total shareholders' equity	2,349.5	2,423.5
Total liabilities and shareholders' equity	4,401.3	4,473.8
Eliminating Adjustments
Current assets
Intercompany receivables	(286.3)	(198.2)
Total current assets	(286.3)	(198.2)
Noncurrent assets
Investment in subsidiaries	(5,335.7)	(5,443.5)
Total assets	(5,622.0)	(5,641.7)
Current liabilities
Intercompany payables	(285.9)	(198.2)
Total current liabilities	(285.9)	(198.2)
Noncurrent liabilities
Intercompany Long Term Notes	(0.3)
Total liabilities	(286.2)	(198.2)
Common stock	(2,827.5)	(2,827.5)
Preferred stock	(4.8)	(4.8)
Retained earnings	(3,363.8)	(3,229.3)
Accumulated other comprehensive earnings (loss)	860.3	618.1
Total Ball Corporation shareholders' equity	(5,335.8)	(5,443.5)
Total shareholders' equity	(5,335.8)	(5,443.5)
Total liabilities and shareholders' equity	$ (5,622.0)	$ (5,641.7)