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Business Combinations (Details)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2012
USD ($)
Jun. 30, 2011
USD ($)
Jun. 30, 2012
USD ($)
Jun. 30, 2011
USD ($)
Jun. 30, 2012
DANanoMaterials [Member]
USD ($)
Apr. 02, 2012
DANanoMaterials [Member]
USD ($)
yr
Jun. 30, 2012
DANanoMaterials [Member]
USD ($)
Dec. 31, 2011
DANanoMaterials [Member]
USD ($)
Dec. 31, 2011
Indura [Member]
USD ($)
Jul. 03, 2012
Indura [Member]
USD ($)
Jul. 03, 2012
Indura [Member]
CLP
Jul. 01, 2012
Indura [Member]
Business Acquisition [Line Items]                        
Percentage of shares purchased           50.00%       13.00% 13.00% 51.80%
Acquiree revenues for previous calendar year               $ 90 $ 480      
Purchase price of acquired entity           158            
Payments to Acquire Businesses, Net of Cash Acquired     173.8 9.9   147.0            
Cash acquired from acquisition           11.0            
Allocation to plant and equipment           26.0            
Allocation to identified intangibles           100.0            
Allocation to goodwill           125.0            
Goodwill deductible for tax purposes           50.0            
Allocation to other net assets           27.0            
Intangibles useful life           22            
Previous percent ownership           50.00%            
Fair value of previously held equity interest           120.0            
Gain on previously held equity interest 85.9 0 85.9 0 85.9   85.9          
Gain on previously held equity interest, after tax         54.6   54.6          
Gain on previously held equity interest, per share         $ 0.25   $ 0.25          
Cash Consideration                   699 345,900  
Acquired debt                   $ 196.0 97,000.0  
Agreement to purchase additional shares under put option                       30.50%
Additional shares committed to purchase                       2.00%