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DERIVATIVE FINANCIAL INSTRUMENTS (Details)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
USD ($)
Mar. 31, 2013
JPY (¥)
Mar. 31, 2012
USD ($)
Mar. 31, 2012
JPY (¥)
Derivative [Line Items]        
Notional amount of foreign currency cash flow hedges $ 11.7 ¥ 1,100.0 $ 62.7 ¥ 5,200.0
Currency bought Japanese yen Japanese yen    
Net unrealized gain $ 1.8   $ (0.3)