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LEASE OBLIGATIONS (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Leases [Abstract]        
Operating lease expense $ 5.3 $ 6.7 $ 19.5 $ 19.2