Subsidiary Guarantees of Debt (Details 2) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 224.0	$ 191.4	$ 416.0	$ 174.1
Receivables, net	885.4	957.1
Inventories, net	898.4	1,016.7
Deferred taxes and other current assets	176.2	148.3
Total current assets	2,184.0	2,313.5
Noncurrent assets
Property, plant and equipment, net	2,685.9	2,430.7
Goodwill	2,176.5	2,254.5	2,399.7
Restricted cash	2,154.4
Intangibles and other assets, net	576.2	572.3
Total assets	9,777.0	7,571.0
Current liabilities
Short-term debt and current portion of long-term debt	77.3	175.1
Accounts payable	1,500.8	1,340.0
Accrued employee costs	229.4	269.9
Other current liabilities	334.1	221.8
Total current liabilities	2,141.6	2,006.8
Noncurrent liabilities
Long-term debt	5,054.2	2,993.8
Employee benefit obligations	1,147.2	1,178.3
Deferred taxes and other liabilities	172.7	152.5
Total liabilities	8,515.7	6,331.4
Common stock	961.7	1,131.3
Retained earnings	4,557.5	4,346.9
Accumulated other comprehensive earnings (loss)	(639.9)	(522.1)
Treasury stock, at cost	(3,628.0)	(3,923.0)
Total Ball Corporation shareholders' equity	1,251.3	1,033.1
Noncontrolling interests	10.0	206.5
Total shareholders' equity	1,261.3	1,239.6	1,416.0	1,314.2
Total liabilities and shareholders' equity	9,777.0	7,571.0
Eliminating Adjustments
Current assets
Intercompany receivables	(660.2)	(198.2)
Total current assets	(660.2)	(198.2)
Noncurrent assets
Investment in subsidiaries	(5,902.1)	(5,443.5)
Total assets	(6,562.3)	(5,641.7)
Current liabilities
Intercompany payables	(659.9)	(198.2)
Total current liabilities	(659.9)	(198.2)
Noncurrent liabilities
Deferred taxes and other liabilities	(0.3)
Total liabilities	(660.2)	(198.2)
Common stock	(1,417.0)	(2,827.5)
Preferred stock	(4.8)	(4.8)
Retained earnings	(5,338.5)	(3,229.3)
Accumulated other comprehensive earnings (loss)	858.2	618.1
Total Ball Corporation shareholders' equity	(5,902.1)	(5,443.5)
Total shareholders' equity	(5,902.1)	(5,443.5)
Total liabilities and shareholders' equity	(6,562.3)	(5,641.7)
Ball Corporation
Current assets
Cash and cash equivalents	5.5	1.5	218.6	0.2
Receivables, net	39.6	43.7
Intercompany receivables	136.5	94.0
Inventories, net	(0.3)
Deferred taxes and other current assets	48.8	3.1
Total current assets	230.1	142.3
Noncurrent assets
Property, plant and equipment, net	13.8	15.1
Investment in subsidiaries	3,688.4	3,152.7
Restricted cash	2,154.4
Intangibles and other assets, net	251.4	232.4
Total assets	6,338.1	3,542.5
Current liabilities
Short-term debt and current portion of long-term debt	0.7	1.9
Accounts payable	19.4	7.1
Intercompany payables	105.1	99.7
Accrued employee costs	16.0	22.3
Other current liabilities	145.4	51.6
Total current liabilities	286.6	182.6
Noncurrent liabilities
Long-term debt	4,938.5	2,750.0
Employee benefit obligations	341.6	329.4
Deferred taxes and other liabilities	(479.9)	(752.6)
Total liabilities	5,086.8	2,509.4
Common stock	961.7	1,131.3
Retained earnings	4,557.5	4,346.9
Accumulated other comprehensive earnings (loss)	(639.9)	(522.1)
Treasury stock, at cost	(3,628.0)	(3,923.0)
Total Ball Corporation shareholders' equity	1,251.3	1,033.1
Total shareholders' equity	1,251.3	1,033.1
Total liabilities and shareholders' equity	6,338.1	3,542.5
Guarantor Subsidiaries
Current assets
Cash and cash equivalents		0.4	0.3	0.3
Receivables, net	224.3	241.3
Intercompany receivables	517.1	99.9
Inventories, net	516.7	575.0
Deferred taxes and other current assets	83.5	75.1
Total current assets	1,341.6	991.7
Noncurrent assets
Property, plant and equipment, net	1,026.4	968.0
Investment in subsidiaries	2,135.1	2,212.2
Goodwill	966.5	931.0
Intangibles and other assets, net	101.2	93.5
Total assets	5,570.8	5,196.4
Current liabilities
Short-term debt and current portion of long-term debt	0.2	7.6
Accounts payable	791.8	732.5
Intercompany payables	0.5	1.5
Accrued employee costs	133.4	155.6
Other current liabilities	60.0	38.0
Total current liabilities	985.9	935.2
Noncurrent liabilities
Long-term debt		0.2
Employee benefit obligations	466.2	432.7
Deferred taxes and other liabilities	375.0	601.8
Total liabilities	1,827.1	1,969.9
Common stock	1,041.8	2,293.5
Retained earnings	3,276.4	1,389.4
Accumulated other comprehensive earnings (loss)	(574.5)	(456.4)
Total Ball Corporation shareholders' equity	3,743.7	3,226.5
Total shareholders' equity	3,743.7	3,226.5
Total liabilities and shareholders' equity	5,570.8	5,196.4
Non-Guarantor Subsidiaries
Current assets
Cash and cash equivalents	218.5	189.5	$ 197.1	$ 173.6
Receivables, net	621.5	672.1
Intercompany receivables	6.6	4.3
Inventories, net	382.0	441.7
Deferred taxes and other current assets	43.9	70.1
Total current assets	1,272.5	1,377.7
Noncurrent assets
Property, plant and equipment, net	1,645.7	1,447.6
Investment in subsidiaries	78.6	78.6
Goodwill	1,210.0	1,323.5
Intangibles and other assets, net	223.6	246.4
Total assets	4,430.4	4,473.8
Current liabilities
Short-term debt and current portion of long-term debt	76.4	165.6
Accounts payable	689.6	600.4
Intercompany payables	554.3	97.0
Accrued employee costs	80.0	92.0
Other current liabilities	128.7	132.2
Total current liabilities	1,529.0	1,087.2
Noncurrent liabilities
Long-term debt	115.7	243.6
Employee benefit obligations	339.4	416.2
Deferred taxes and other liabilities	277.9	303.3
Total liabilities	2,262.0	2,050.3
Common stock	375.2	534.0
Preferred stock	4.8	4.8
Retained earnings	2,062.1	1,839.9
Accumulated other comprehensive earnings (loss)	(283.7)	(161.7)
Total Ball Corporation shareholders' equity	2,158.4	2,217.0
Noncontrolling interests	10.0	206.5
Total shareholders' equity	2,168.4	2,423.5
Total liabilities and shareholders' equity	$ 4,430.4	$ 4,473.8