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           DERIVATIVE INSTRUMENTS (Details) (USD $) 
        In Millions, unless otherwise specified  | 
        
           Jun. 30, 2012 
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           Dec. 31, 2011 
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|---|---|---|
| 
           Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] 
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| Derivative Instrument [Line Items] | ||
| Notional amounts | $ 159.2 | $ 32.5 | 
| 
           Interest Rate Swaps and Cap Agreements [Member] | Designated as Hedging Instrument [Member] 
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        ||
| Derivative Instrument [Line Items] | ||
| Notional amounts | $ 141.8 | $ 131.0 | 
| 
           Convertible Senior Notes Due 2027 2.875 percent [Member] 
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| Derivative Instrument [Line Items] | ||
| Debt instrument stated interest rate (in hundredths) | 2.875% | 
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- Definition 
          Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Interest rate stated in the contractual debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
          
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