XML 20 R3.htm IDEA: XBRL DOCUMENT v3.6.0.2
Consolidated Statement of Income (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Statement [Abstract]      
Includes excise taxes on petroleum products sales $ 13,381 $ 13,780 $ 14,698
Net of provision for income taxes on discontinued operations $ 0 $ 0 $ 5