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Financial Instruments (Details Textual)
12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2011
USD ($)
Dec. 31, 2010
USD ($)
Dec. 31, 2011
Canada [Member]
GJ
Dec. 31, 2011
United States [Member]
MMBTU
Dec. 31, 2011
Minimum [Member]
Canada [Member]
GJ
Dec. 31, 2011
Minimum [Member]
United States [Member]
MMBTU
Dec. 31, 2011
Maximum [Member]
Canada [Member]
GJ
Dec. 31, 2011
Maximum [Member]
United States [Member]
MMBTU
Dec. 31, 2011
Investment in ABCP [Member]
USD ($)
Dec. 31, 2011
Investment in ABCP [Member]
CAD
Dec. 31, 2010
Investment in ABCP [Member]
USD ($)
Dec. 31, 2010
Investment in ABCP [Member]
CAD
Dec. 31, 2011
Forward Contracts [Member]
USD ($)
Dec. 31, 2011
Natural gas contracts [Member]
USD ($)
Dec. 31, 2011
Propylene Contracts [Member]
USD ($)
lbs
Derivative Instruments, Gain (Loss) [Line Items]                              
Foreign exchange forward contracts, gain recognized in other comprehensive income                         $ 36,000,000    
Foreign exchange forward contracts, loss recognized in other comprehensive income                         68,000,000 9,000,000  
Swaps outstanding fixed price     1,400,000 1,000,000                     9,000,000
Swap fixed price         6.22 6.72 7.49 8.02              
Face value of investments                   125,000,000   127,000,000      
Fixed price per lbs                             0.70
Trading Securities 1,407,000,000 1,965,000,000             82,000,000 84,000,000 84,000,000 84,000,000      
Financial Instruments (Textual) [Abstract]                              
Fair value of investments carrying value 12,000,000 19,000,000                          
Long-term debt due within one year $ 25,000,000 $ 19,000,000                          
Percentage of sales to six largest customers 83.00%