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Percentage of voting equity interests acquired in the business combination.

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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Acquisitions (Details) In Millions, unless otherwise specified	1 Months Ended					1 Months Ended				1 Months Ended
	Jan. 31, 2011 Aerocan S.A.S. (Aerocan) USD ($) Y plant employee	Jan. 31, 2011 Aerocan S.A.S. (Aerocan) EUR (€)	Jan. 31, 2011 Aerocan S.A.S. (Aerocan) Czech Republic plant	Jan. 31, 2011 Aerocan S.A.S. (Aerocan) France plant	Jan. 31, 2011 Aerocan S.A.S. (Aerocan) United Kingdom plant	Aug. 31, 2010 Latapack-Ball Embalagens, Ltda. (Latapack-Ball) USD ($) Y plant	Jul. 31, 2010 Neuman Aluminum (Neuman) USD ($) employee plant	Jul. 31, 2010 Neuman Aluminum (Neuman) United States plant	Jul. 31, 2010 Neuman Aluminum (Neuman) Canada plant	Jun. 30, 2010 Guangdong Jianlibao Group Co., Ltd USD ($)
Acquisitions
Business acquired in cash	$ 295.2	€ 221.7					$ 62.0			$ 86.9
Cash acquired	26.2
Number of aerosol container manufacturing plants operated	3		1	1	1
Percentage of ownership in a joint venture	51.00%
Number of plants operated	4					2	2	1	1
Number of people employed in plants	560						180
Noncash gain on previously held equity investment						81.8
Fair values of acquired assets and liabilities, and noncontrolling interest recognized
Other assets and liabilities, net	7.4
Cash						69.3
Current assets						84.7
Property, plant and equipment	95.8					265.9
Goodwill	166.9					100.2
Intangible assets	53.9					52.8
Deferred taxes	(22.8)
Current liabilities						(53.2)
Long-term liabilities						(174.1)
Noncontrolling interest	(6.0)					(132.9)
Net assets acquired	295.2					345.6
Estimated useful life of customer contracts, customer relationships, minimum (in years)	5
Estimated useful life of customer contracts and relationships, maximum (in years)	12
Payments to acquire additional interest in joint venture						46.2
Interest acquired in joint venture (as a percent)						10.10%				65.00%
Overall economic interest in the joint venture (as a percent)						60.10%
Estimated useful life of customer relationships (in years)						13.4
Equity earning recognized on investment										$ 24.1