Legal Proceedings (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended		7 Months Ended
	Sep. 30, 2012	Sep. 30, 2012 Sao Paulo city services tax for years 2004-2009	Aug. 16, 1999 Dixie Toga Ltda Sao Paulo city services tax for years 1991-1995	Sep. 30, 2012 Dixie Toga Ltda Sao Paulo city services tax for years 1991-1995	Sep. 30, 2012 Dixie Toga Ltda Sao Paulo city services tax for years 1996-2001	Sep. 30, 2012 Itap Bemis Ltda. Sao Paulo city services tax for years 1996-2001
Loss contingencies
Number of sites for state law proceedings under environmental matters	17
Number of Sites for Proceedings under Environmental Matters in Brazil	1
Estimated city services tax				$ 54.0
Number of annulment actions filed			2
Estimated city services tax and penalties					26.2	8.1
Estimated increase in city service tax and penalties for interest, monetary adjustments and costs					140.1	48.2
Estimated city services tax, penalties and interest		47.0
Number of multiemployer defined benefit pensions plans	3
Number of underfunded multiemployer defined benefit pensions plans	2
Share of withdrawal liability subject to voluntary withdrawal	$ 30
Percentage of nondeductible excise tax imposed upon by IRS on the amount of the accumulated funding deficiency for those employers contributing to the fund	5.00%