Subsidiary Guarantees of Debt - Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Millions	Jun. 30, 2018	Jan. 02, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 549.0		$ 448.0	$ 433.0	$ 597.0
Receivables, net	2,013.0	$ 1,941.0	1,634.0
Inventories, net	1,257.0	1,285.0	1,526.0
Other Assets, Current	206.0		145.0
Assets held for sale	850.0		5.0
Total current assets	4,875.0		3,758.0
Noncurrent assets
Property, plant and equipment, net	4,473.0		4,610.0
Goodwill	4,516.0		4,933.0
Intangible assets, net	2,305.0		2,462.0
Other assets	1,366.0		1,406.0
Total assets	17,535.0		17,169.0
Current liabilities
Short-term debt and current portion of long-term debt	176.0		453.0
Accounts payable	2,739.0		2,762.0
Accrued employee costs	256.0		352.0
Other current liabilities	558.0	557.0	540.0
Liabilities held for sale	225.0
Total current liabilities	3,954.0		4,107.0
Noncurrent liabilities
Long-term debt	7,171.0		6,518.0
Employee benefit obligations	1,452.0		1,463.0
Long-term derivative liabilities	94.0		120.0
Deferred taxes	666.0	702.0	695.0
Other liabilities	297.0		340.0
Total liabilities	13,540.0		13,123.0
Common stock	1,120.0		1,084.0
Retained earnings	5,199.0	5,024.0	4,987.0
Accumulated other comprehensive earnings (loss)	(767.0)	$ (655.0)	(656.0)
Treasury stock, at cost	(1,663.0)		(1,474.0)
Total Ball Corporation shareholders' equity	3,889.0		3,941.0
Noncontrolling interests	106.0		105.0
Total shareholders' equity	3,995.0		4,046.0
Total liabilities and shareholders' equity	17,535.0		17,169.0
Eliminating Adjustments
Current assets
Intercompany receivables	(2,301.0)		(1,426.0)
Total current assets	(2,301.0)		(1,426.0)
Noncurrent assets
Investment in subsidiaries	(14,265.0)		(12,994.0)
Total assets	(16,566.0)		(14,420.0)
Current liabilities
Intercompany payables	(2,300.0)		(1,426.0)
Total current liabilities	(2,300.0)		(1,426.0)
Noncurrent liabilities
Total liabilities	(2,300.0)		(1,426.0)
Common stock	(7,828.0)		(6,749.0)
Preferred stock	(5.0)		(5.0)
Retained earnings	(7,507.0)		(7,089.0)
Accumulated other comprehensive earnings (loss)	1,074.0		849.0
Total Ball Corporation shareholders' equity	(14,266.0)		(12,994.0)
Total shareholders' equity	(14,266.0)		(12,994.0)
Total liabilities and shareholders' equity	(16,566.0)		(14,420.0)
Ball Corporation
Current assets
Cash and cash equivalents	34.0		5.0
Receivables, net	10.0		3.0
Intercompany receivables	52.0		39.0
Other Assets, Current	35.0
Total current assets	131.0		56.0
Noncurrent assets
Property, plant and equipment, net	20.0		20.0
Investment in subsidiaries	10,546.0		8,639.0
Intangible assets, net	16.0		15.0
Other assets	168.0		185.0
Total assets	10,881.0		8,915.0
Current liabilities
Short-term debt and current portion of long-term debt	135.0		351.0
Accounts payable	15.0		14.0
Intercompany payables	1,488.0		705.0
Accrued employee costs	14.0		28.0
Other current liabilities	166.0		170.0
Total current liabilities	1,818.0		1,268.0
Noncurrent liabilities
Long-term debt	7,160.0		6,504.0
Employee benefit obligations	323.0		333.0
Intercompany long-term notes	(2,307.0)		(3,172.0)
Deferred taxes	(113.0)		(109.0)
Other liabilities	111.0		150.0
Total liabilities	6,992.0		4,974.0
Common stock	1,120.0		1,084.0
Retained earnings	5,199.0		4,987.0
Accumulated other comprehensive earnings (loss)	(767.0)		(656.0)
Treasury stock, at cost	(1,663.0)		(1,474.0)
Total Ball Corporation shareholders' equity	3,889.0		3,941.0
Total shareholders' equity	3,889.0		3,941.0
Total liabilities and shareholders' equity	10,881.0		8,915.0
Guarantor Subsidiaries
Current assets
Cash and cash equivalents	1.0
Receivables, net	507.0		260.0
Intercompany receivables	517.0		1,285.0
Inventories, net	497.0		673.0
Other Assets, Current	42.0
Assets held for sale	849.0		4.0
Total current assets	2,413.0		2,270.0
Noncurrent assets
Property, plant and equipment, net	1,306.0		1,364.0
Investment in subsidiaries	3,818.0		3,885.0
Goodwill	1,191.0		1,545.0
Intangible assets, net	428.0		470.0
Other assets	281.0		282.0
Total assets	9,437.0		9,816.0
Current liabilities
Short-term debt and current portion of long-term debt	1.0
Accounts payable	885.0		1,084.0
Intercompany payables	129.0		82.0
Accrued employee costs	145.0		182.0
Other current liabilities	123.0		111.0
Liabilities held for sale	225.0
Total current liabilities	1,508.0		1,459.0
Noncurrent liabilities
Long-term debt	1.0
Employee benefit obligations	825.0		811.0
Intercompany long-term notes	774.0		1,305.0
Deferred taxes	100.0		107.0
Other liabilities	50.0		50.0
Total liabilities	3,258.0		3,732.0
Common stock	2,523.0		2,463.0
Retained earnings	4,344.0		4,196.0
Accumulated other comprehensive earnings (loss)	(688.0)		(575.0)
Total Ball Corporation shareholders' equity	6,179.0		6,084.0
Total shareholders' equity	6,179.0		6,084.0
Total liabilities and shareholders' equity	9,437.0		9,816.0
Non-Guarantor Subsidiaries
Current assets
Cash and cash equivalents	514.0		443.0
Receivables, net	1,496.0		1,371.0
Intercompany receivables	1,732.0		102.0
Inventories, net	760.0		853.0
Other Assets, Current	129.0
Assets held for sale	1.0		1.0
Total current assets	4,632.0		2,858.0
Noncurrent assets
Property, plant and equipment, net	3,147.0		3,226.0
Investment in subsidiaries	(99.0)		470.0
Goodwill	3,325.0		3,388.0
Intangible assets, net	1,861.0		1,977.0
Other assets	917.0		939.0
Total assets	13,783.0		12,858.0
Current liabilities
Short-term debt and current portion of long-term debt	40.0		102.0
Accounts payable	1,839.0		1,664.0
Intercompany payables	683.0		639.0
Accrued employee costs	97.0		142.0
Other current liabilities	269.0		259.0
Total current liabilities	2,928.0		2,806.0
Noncurrent liabilities
Long-term debt	10.0		14.0
Employee benefit obligations	304.0		319.0
Intercompany long-term notes	1,533.0		1,867.0
Deferred taxes	679.0		697.0
Other liabilities	136.0		140.0
Total liabilities	5,590.0		5,843.0
Common stock	5,305.0		4,286.0
Preferred stock	5.0		5.0
Retained earnings	3,163.0		2,893.0
Accumulated other comprehensive earnings (loss)	(386.0)		(274.0)
Total Ball Corporation shareholders' equity	8,087.0		6,910.0
Noncontrolling interests	106.0		105.0
Total shareholders' equity	8,193.0		7,015.0
Total liabilities and shareholders' equity	$ 13,783.0		$ 12,858.0