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LONG-TERM DEBT - SCHEDULE OF LONG-TERM DEBT (DETAILS) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Debt Instrument [Line Items]      
Long-term Debt $ 859   $ 871
Less current portion 114   117
Long-term debt, net of current portion 745   754
Weighted-average fixed-interest rate 5.70%   5.70%
Weighted-average variable-interest rate 1.60%   1.70%
Long-term Debt, Fiscal Year Maturity [Abstract]      
Remainder of 2014 56    
2015 117    
2016 115    
2017 121    
2018 151    
Thereafter 299    
Long-term Debt 859   871
Proceeds from issuance of debt 51 0  
Scheduled Debt Payments [Member]
     
Debt Instrument [Line Items]      
Debt payments 64    
Fixed-rate notes payable due through 2024
     
Debt Instrument [Line Items]      
Long-term Debt 660   703
Long-term Debt, Fiscal Year Maturity [Abstract]      
Long-term Debt 660   703
Variable-rate notes payable due through 2025
     
Debt Instrument [Line Items]      
Long-term Debt 199   168
Long-term Debt, Fiscal Year Maturity [Abstract]      
Long-term Debt $ 199   $ 168