v2.4.0.8
Fair Value Measurement - FV of Fin. Instruments (Details 2) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Financial Assets [Abstract]    
Deferred compensation investments $ 299 $ 305
Carrying Amount [Member]
   
Financial Assets [Abstract]    
Deferred compensation investments 299 305
Commodity derivatives, assets 159 221
Total loans and advances - related parties 1,613 1,697
Financial Liabilities [Abstract]    
Total debt, excluding capital leases 20,799 21,709
Total joint venture acquisition obligation 3,201 3,582
Commodity derivatives, liability 161 199
Fair Value [Member]
   
Financial Assets [Abstract]    
Deferred compensation investments 299 305
Commodity derivatives, assets 159 221
Total loans and advances - related parties 1,760 1,916
Financial Liabilities [Abstract]    
Total debt, excluding capital leases 23,778 26,349
Total joint venture acquisition obligation 3,501 3,968
Commodity derivatives, liability $ 161 $ 199