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LEGAL PROCEEDINGS, COMMITMENTS AND CONTINGENCIES - Changes in The Reserve for Environmental Remediation (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Environmental Exit Cost [Line Items]  
Reserve balance, beginning $ 29
Reserve charges and adjustments, net 12
Payments (7)
Reserve balance, ending $ 34
Total active sites 53