| 
           LONG-TERM DEBT TOTAL DEBT ISSUANCE (Details) (USD $) 
        In Millions, unless otherwise specified  | 
        
           Sep. 16, 2013 
         | 
      
|---|---|
| Debt Instrument [Line Items] | |
| Debt Instrument, Face Amount | $ 750.0 | 
| Number of Long-term debt tranches | 3 | 
| Long-term Debt, Prepayment option at any time in amount not less than percent shown of the original aggregate amount | 5.00% | 
| Long-term debt, prepayment option at a price equal to the sum of (a) 100% of the principal amount thereof, plus any accrued and unpaid interest | 100.00% | 
| 
           September 16, 2020 [Member] | Senior Notes [Member] 
         | 
        |
| Debt Instrument [Line Items] | |
| Long-term Debt, Fair Value | 300.0 | 
| Debt Instrument, Interest Rate, Stated Percentage | 4.03% | 
| 
           September 16, 2023 [Member] | Senior Notes [Member] 
         | 
        |
| Debt Instrument [Line Items] | |
| Long-term Debt, Fair Value | 350.0 | 
| Debt Instrument, Interest Rate, Stated Percentage | 4.63% | 
| 
           September 16, 2025 [Member] | Senior Notes [Member] 
         | 
        |
| Debt Instrument [Line Items] | |
| Long-term Debt, Fair Value | $ 100.0 | 
| Debt Instrument, Interest Rate, Stated Percentage | 4.78% | 
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- Definition 
          Long-term Debt, Prepayment option at any time in amount not less than percent shown of the original aggregate amount No definition available. 
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- Definition 
          Long-term debt, prepayment option at a price equal to the sum of (a) 100% of the principal amount thereof, plus any accrued and unpaid interest No definition available. 
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- Definition 
          Number of Long-term debt tranches No definition available. 
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- Definition 
          Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
          
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- Definition 
          Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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