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Stock-Based Incentive Plans (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Available term to purchase common stock from the date of grant in years 10    
Stock-based compensation expense $ 15 $ 15 $ 5
Stock-based compensation expense, related tax benefits 5 6 2
Sunoco Logistics Partners L.P. [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense   5 5
Sun Coke Energy Inc [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 8    
Cash Settled Awards [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of targeted amounts for original grants awarded 100.00%    
LTPEP II [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Authorized number of shares of common stock available for awards 8,000,000    
Shares of common stock available for awards 1,324,985    
LTPEP III [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Authorized number of shares of common stock available for awards 3,500,000    
Shares of common stock available for awards 2,988,710