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CONTINGENCIES AND COMMITMENTS (Detail) (USD $)
In Millions, unless otherwise specified
1 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Jan. 31, 2007
Legal Proceedings [Member]
Jun. 30, 2012
Legal Proceedings [Member]
Jun. 30, 2012
Environmental Matters [Member]
Dec. 31, 2011
Environmental Matters [Member]
Loss Contingencies [Line Items]            
Litigation Settlement Gross     $ 9.0      
Litigation Reserve Current       5.2    
Litigation Reserve     6.5      
Accrual For Environmental Loss Contingencies         21.2 20.5
Environmental Decommisioning Costs         4.7  
Letters of Credit Outstanding Amount $ 55.8 $ 55.8