v2.4.0.6
Employee Benefit Plans - Amounts Recognized in Consolidated Balance Sheet (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
U.S. (Pension Benefits) [Member]
   
Amounts Recognized in the Consolidated Balance Sheet at December 31    
Current liabilities $ (118) $ (74)
Noncurrent liabilities (1,908) (1,575)
Total recognized (2,026) (1,649)
Int'l (Pension Benefits) [Member]
   
Amounts Recognized in the Consolidated Balance Sheet at December 31    
Noncurrent assets 94 156
Current liabilities (5) (4)
Noncurrent liabilities (851) (777)
Total recognized (762) (625)
Other Benefits [Member]
   
Amounts Recognized in the Consolidated Balance Sheet at December 31    
Current liabilities (62) (51)
Noncurrent liabilities (864) (811)
Total recognized $ (926) $ (862)