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FINANCIAL CHARGES AND OTHER (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
FINANCIAL CHARGES AND OTHER      
Interest expense on long-term debt $ 22 $ 14 $ 9
Loss on interest rate swaps and options   14 17
Interest income   (2)  
Amortization of debt issue costs 1 2  
Financial charges and other $ 23 $ 28 $ 26