Registration of securities issued in business combination transactions

FAIR VALUE (Details 2)

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FAIR VALUE (Details 2) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Dec. 31, 2010
Assets:      
Available-for-sale equity securities - non-qualified employee benefit plan investments   $ 12 $ 11
Recurring basis | Estimated Fair Value
      
Assets:      
Total assets. 43 39 30
Recurring basis | Estimated Fair Value | Cross currency interest rate contract
      
Assets:      
Total assets 29 27 19
Recurring basis | Estimated Fair Value | Interest rate contract
      
Liabilities:      
Total liabilities (19) (17) (9)
Recurring basis | Estimated Fair Value | Equity mutual funds
      
Assets:      
Total assets 14 12 11
Recurring basis | Quoted prices in active markets for identical assets (Level 1)
      
Assets:      
Total assets. 14 12 11
Recurring basis | Quoted prices in active markets for identical assets (Level 1) | Equity mutual funds
      
Assets:      
Total assets 14 12 11
Recurring basis | Significant other observable inputs (Level 2)
      
Assets:      
Total assets. 29    
Recurring basis | Significant other observable inputs (Level 2) | Cross currency interest rate contract
      
Assets:      
Total assets 29    
Recurring basis | Significant other observable inputs (Level 2) | Interest rate contract
      
Liabilities:      
Total liabilities (19) (17) (9)
Recurring basis | Significant unobservable inputs (Level 3)
      
Assets:      
Total assets.   27 19
Recurring basis | Significant unobservable inputs (Level 3) | Cross currency interest rate contract
      
Assets:      
Total assets   $ 27 $ 19