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LONG-TERM DEBT LONG-TERM DEBT - FUTURE PAYMENTS (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Long-term Debt, Fiscal Year Maturity [Abstract]    
Remainder of 2015 $ 83us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear  
2016 115us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo  
2017 120us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree  
2018 151us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour  
2019 114us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive  
Thereafter 185us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive  
Total $ 768us-gaap_LongTermDebt $ 803us-gaap_LongTermDebt