Business Consolidation and Other Activities (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended				12 Months Ended
	Oct. 31, 2016	Jun. 30, 2016	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business consolidation and other activities
Business consolidation and other activities				$ 63.0	$ (28.0)		$ (337.0)	$ (195.0)	$ (81.0)
Currency exchange contracts							(4.0)	(2.0)
Long-term Debt			$ 7,389.0				7,389.0	5,028.0
(Loss) on cross-currrency swap							(166.0)	(69.0)	(23.0)
Trade accounts receivable			1,169.0				1,169.0	759.0
Senior Notes 4.375 Percent Due December 2020
Business consolidation and other activities
Long-term Debt								1,000.0
Face amount of debt								1,000.0
Ball Corporation
Business consolidation and other activities
Business consolidation and other activities							(577.0)	(159.0)	(11.0)
Aerospace
Business consolidation and other activities
Business consolidation and other activities								1.0	(14.0)
Operating Segments | Beverage packaging, North And Central America
Business consolidation and other activities
Business consolidation and other activities							(20.0)	(19.0)	(11.0)
Charges for insignificant items							3.0
Business Exit Costs Other Insignificant Costs									1.0
Noncash charge for settlement									14.0
Gain on difference between NBV and net insurance proceeds after fire at facility									4.0
Operating Segments | Beverage packaging, North And Central America | Rexam
Business consolidation and other activities
Professional Services And Other Costs							4.0
Operating Segments | Beverage packaging, North And Central America | Bristol Virginia Plant
Business consolidation and other activities
Charges for insignificant items								2.0
Charges related to facilities closure							4.0	19.0
Charges related to severance, pension and other employee benefits								17.0
Business Exit Costs Other Insignificant Costs								2.0
Operating Segments | Beverage packaging, North And Central America | Reidsville North Carolina Plant
Business consolidation and other activities
Plant closure costs comprised of employee severance, pension and other benefits, asset impairments and facility shut down and disposal costs			9.0
Operating Segments | Beverage packaging, South America
Business consolidation and other activities
Business consolidation and other activities							(15.0)	(3.0)
Charges for insignificant items							1.0	3.0
Operating Segments | Beverage packaging, South America | Rexam
Business consolidation and other activities
Professional Services And Other Costs							14.0
Operating Segments | Beverage packaging, Europe
Business consolidation and other activities
Business consolidation and other activities							(24.0)	(10.0)	(9.0)
Charge incurred in connection with headcount reductions, cost-out initiatives and relocation of the company's European headquarters from Germany to Switzerland									4.0
Charges for insignificant items							2.0	5.0
Write down of property held for sale								5.0
Business Exit Costs Other Insignificant Costs								5.0	5.0
Operating Segments | Beverage packaging, Europe | Disposal Group, Held-for-sale, Not Discontinued Operations
Business consolidation and other activities
Write down of property held for sale								5.0
Operating Segments | Beverage packaging, Europe | Rexam
Business consolidation and other activities
Professional Services And Other Costs							22.0
Operating Segments | Beverage packaging, Europe | Lublin Poland Facility
Business consolidation and other activities
Write off of previously capitalized costs									5.0
Operating Segments | Food and aerosol packaging
Business consolidation and other activities
Business consolidation and other activities							(26.0)		(42.0)
Charges for insignificant items							7.0
Charges related to facilities closure									5.0
Accounts receivable provision						$ 17.0			17.0
Voluntary and involuntary severance									6.0
Other closure costs									4.0
Charges to Eliminate Beverage Can Production from Facility									6.0
Noncash charge for settlement									10.0
Operating Segments | Food and aerosol packaging | Machinery and equipment
Business consolidation and other activities
Accelerated Depreciation			$ 10.0
Operating Segments | Food and aerosol packaging | Weirton West Virginia Plant
Business consolidation and other activities
Plant closure costs comprised of employee severance, pension and other benefits, asset impairments and facility shut down and disposal costs							18.0
Operating Segments | Food and aerosol packaging | Baltimore Maryland Facility
Business consolidation and other activities
Gain (loss) on dispositions	$ 9.0
Operating Segments | Aerospace
Business consolidation and other activities
Charges for insignificant items								1.0
Business Exit Costs Other Insignificant Costs								1.0
Noncash charge for settlement									14.0
Corporate and other | Other
Business consolidation and other activities
Business consolidation and other activities							(252.0)	(164.0)	(5.0)
Charges for insignificant items							14.0	11.0	1.0
Foreign currency translation losses							173.0
Compensation received for reimbursement of severance costs incurred in connection with facilities closure and relocation									5.0
Business Exit Costs Other Insignificant Costs									2.0
Noncash charge for settlement									7.0
Corporate and other | Other | Rexam
Business consolidation and other activities
Professional Services And Other Costs							301.0	139.0
Foreign currency translation losses								14.0
Compensation arrangement expense							108.0
Corporate and other | Other | Interest rate floor - Euribor | Rexam
Business consolidation and other activities
Currency exchange contracts								$ (14.0)
Corporate and other | Metal Beverage Packaging Asia (Member)
Business consolidation and other activities
Charges related to facilities closure									$ 2.0
Divestment Business
Business consolidation and other activities
Noncash charge for settlement		$ (80.0)
Divestment Business | Corporate and other | Other | Ball Corporation
Business consolidation and other activities
Gain (loss) on dispositions							$ 344.0