Condensed Consolidated Statement Of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Revenues and other income
Sales and other operating revenue	$ 102,853	[1],[2]	$ 112,745	[1],[2]	$ 206,681	[1],[2]	$ 231,934	[1],[2]
Income from equity affiliates	3,098		3,651		7,516		7,861
Other income	518		10,967		1,079		11,621
Total revenues and other income	106,469		127,363		215,276		251,416
Costs and other deductions
Crude oil and product purchases	59,481		66,344		119,380		136,169
Production and manufacturing expenses	10,278		9,787		20,014		19,637
Selling, general and administrative expenses	3,268		3,486		6,386		7,087
Depreciation and depletion	4,405		3,899		8,515		7,741
Exploration expenses, including dry holes	454		372		899		894
Interest expense	85		50		109		157
Sales-based taxes	7,552	[2]	8,027	[2]	15,044	[2]	16,520	[2]
Other taxes and duties	8,178		9,207		16,123		19,505
Total costs and other deductions	93,701		101,172		186,470		207,710
Income before income taxes	12,768		26,191		28,806		43,706
Income taxes	5,793		8,537		12,070		16,253
Net income including noncontrolling interests	6,975		17,654		16,736		27,453
Net income attributable to noncontrolling interests	115		1,744		376		2,093
Net income attributable to ExxonMobil	$ 6,860		$ 15,910		$ 16,360		$ 25,360
Earnings per common share (dollars)	$ 1.55		$ 3.41		$ 3.67		$ 5.41
Earnings per common share - assuming dilution (dollars)	$ 1.55		$ 3.41		$ 3.67		$ 5.41
Dividends per common share (dollars)	$ 0.63		$ 0.57		$ 1.20		$ 1.04

[1] Includes sales-based taxes

[2] Sales-based taxes included in sales and other operating revenue for the three months ended June 30, 2013, and 2012, were $7,552 million and $8,027 million, respectively, and for the six months ended June 30, 2013, and 2012, were $15,044 million and $16,520 million, respectively.