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CONTINGENCIES (Details) - Great Lakes v. Essar Steel Minnesota LLC, et al. - Great Lakes - USD ($)
$ in Millions
1 Months Ended
Oct. 29, 2009
May 31, 2017
Apr. 30, 2017
Jul. 31, 2016
Sep. 30, 2015
Contingencies          
Judgement awarded     $ 31.5    
Amount released into bankruptcy estates       $ 1.2  
Essar          
Contingencies          
Recovery sought $ 33.0        
Judgement awarded   $ 1.2     $ 32.9