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Investment In Affiliates - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Jul. 03, 2012
Consolidated Container Company
Dec. 31, 2011
Consolidated Container Company
Investments in and Advances to Affiliates [Line Items]        
Non-controlling interest, ownership percentage 25.00%      
Equity investments   $ 0    
Sales Proceeds 58.0      
Cash tax obligation 90      
Pre-tax gain from sale 58.0      
Additional income tax expense 68.4      
Net after-tax loss on the sale of investment (10.4)      
Supply agreement, product purchase cost     $ 204.1 $ 314.9