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Condensed Consolidated Statement Of Income (Parenthetical) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Condensed Consolidated Statement Of Income [Abstract]    
Sales-based taxes included in sales and other operating revenue [1] $ 4,815 $ 5,530
[1] Sales-based taxes included in sales and other operating revenue for the three months ended March 31, 2016, and 2015, were $4,815 million and $5,530 million, respectively.