Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2012

Earnings Per Share [Abstract]

Earnings Per Share Computation

			Three Months Ended				Six Months Ended
			June 30,				June 30,
			2012		2011		2012		2011
Earnings per common share
Net income attributable to ExxonMobil (millions of dollars)			$	15,910	$	10,680	$	25,360	$	21,330
Weighted average number of common shares
	outstanding (millions of shares)			4,656		4,906		4,686		4,934
Earnings per common share (dollars)			$	3.41	$	2.19	$	5.41	$	4.33
Earnings per common share - assuming dilution
Net income attributable to ExxonMobil (millions of dollars)			$	15,910	$	10,680	$	25,360	$	21,330
Weighted average number of common shares
	outstanding (millions of shares)			4,656		4,906		4,686		4,934
		Effect of employee stock-based awards		1		6		1		7
Weighted average number of common shares
	outstanding - assuming dilution			4,657		4,912		4,687		4,941
Earnings per common share
	- assuming dilution (dollars)		$	3.41	$	2.18	$	5.41	$	4.32