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Investment In Joint Venture (Detail) (USD $)
In Millions, unless otherwise specified
1 Months Ended 12 Months Ended
Jun. 30, 2011
Feb. 28, 2011
Oct. 31, 2005
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2009
Year
Dec. 31, 2009
Percentage of equity interest in the joint venture     50.00%        
Joint venture ownership percentage by partner           50.00%  
Period to complete sale, in months           26  
Aggregate purchase price for interest in joint venture           $ 20  
Number of installment payments receivable           3  
Installment payments due date, first           December 15, 2009  
Current portion of joint venture sale received 4.0 6.0       10.0  
Percentage of equity interest sold   15.00%       50.00%  
Royalty guaranteed 4.0 6.0   4.0   29.0  
Royalty payments period           3,000,000  
Future royalty payments, payable           10  
Investment             2.8
Remaining percentage of equity interest 10.00% 10.00%   10.00% 25.00%    
Loss on deconsolidation         13.1    
Write off of remaining investment       $ 2.1