v2.4.0.6
Long-Term Debt (Condensed Consolidated Balance Sheet) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Cash and cash equivalents $ 12,664 $ 7,825 $ 10,693 $ 31,437
Cash and cash equivalents - restricted 404 628    
Notes and accounts receivable - net 38,642 32,284    
Inventories 15,024 12,976    
Other current assets 6,229 5,271    
Total current assets 72,963 58,984    
Investments and other assets 43,425 43,978    
Property, plant and equipment - net 214,664 199,548 139,116  
Other long-term assets 9,092 8,640    
Intercompany receivables         
Total assets 331,052 302,510 233,323  
Notes and loans payable 7,711 2,787    
Accounts payable and accrued liabilities 57,067 50,034    
Income taxes payable 12,727 9,812    
Total current liabilities 77,505 62,633    
Long-term debt 9,322 12,227    
Postretirement benefits reserves 24,994 19,367    
Deferred income tax liabilities 36,618 35,150    
Other long-term liabilities 21,869 20,454    
Intercompany payables          
Total liabilities 170,308 149,831    
Earnings reinvested 330,939 298,899    
Other equity (176,543) (152,060)    
ExxonMobil share of equity 154,396 146,839    
Noncontrolling interests 6,348 5,840    
Total equity 160,744 152,679 115,392 117,523
Total liabilities and equity 331,052 302,510    
Exxon Mobil Corporation Parent Guarantor [Member]
        
Cash and cash equivalents 1,354 309    
Cash and cash equivalents - restricted 239 371    
Notes and accounts receivable - net 2,719 2,104    
Inventories 1,634 1,457    
Other current assets 353 239    
Total current assets 6,299 4,480    
Investments and other assets 260,410 255,005    
Property, plant and equipment - net 19,687 18,830    
Intercompany receivables 17,325 18,186    
Total assets 303,721 296,501    
Notes and loans payable 1,851 1,042    
Accounts payable and accrued liabilities 3,117 2,987    
Total current liabilities 4,968 4,029    
Long-term debt 293 295    
Postretirement benefits reserves 12,344 9,660    
Deferred income tax liabilities 1,450 642    
Other long-term liabilities 5,215 5,632    
Intercompany payables 125,055 129,404    
Total liabilities 149,325 149,662    
Earnings reinvested 330,939 298,899    
Other equity (176,543) (152,060)    
ExxonMobil share of equity 154,396 146,839    
Total equity 154,396 146,839    
Total liabilities and equity 303,721 296,501    
SeaRiver Maritime Financial Holdings, Inc. [Member]
        
Investments and other assets 393 458    
Intercompany receivables 2,726 2,457    
Total assets 3,119 2,915    
Notes and loans payable 2,662 13    
Accounts payable and accrued liabilities 57      
Income taxes payable 2 3    
Total current liabilities 2,721 16    
Long-term debt   2,389    
Deferred income tax liabilities   107    
Intercompany payables 386 382    
Total liabilities 3,107 2,894    
Earnings reinvested (1,032) (848)    
Other equity 1,044 869    
ExxonMobil share of equity 12 21    
Total equity 12 21    
Total liabilities and equity 3,119 2,915    
All Other Subsidiaries [Member]
        
Cash and cash equivalents 11,310 7,516    
Cash and cash equivalents - restricted 165 257    
Notes and accounts receivable - net 36,569 30,346    
Inventories 13,390 11,519    
Other current assets 5,876 5,032    
Total current assets 67,310 54,670    
Investments and other assets 485,157 462,893    
Property, plant and equipment - net 194,977 180,718    
Intercompany receivables 543,844 528,405    
Total assets 1,291,288 1,226,686    
Notes and loans payable 3,198 1,732    
Accounts payable and accrued liabilities 53,893 47,047    
Income taxes payable 13,371 9,975    
Total current liabilities 70,462 58,754    
Long-term debt 9,029 9,543    
Postretirement benefits reserves 12,650 9,707    
Deferred income tax liabilities 35,168 34,401    
Other long-term liabilities 16,654 14,822    
Intercompany payables 438,454 419,262    
Total liabilities 582,417 546,489    
Earnings reinvested 141,467 132,357    
Other equity 561,056 542,000    
ExxonMobil share of equity 702,523 674,357    
Noncontrolling interests 6,348 5,840    
Total equity 708,871 680,197    
Total liabilities and equity 1,291,288 1,226,686    
Consolidating And Eliminating Adjustments [Member]
        
Notes and accounts receivable - net (646) (166)    
Total current assets (646) (166)    
Investments and other assets (702,535) (674,378)    
Intercompany receivables (563,895) (549,048)    
Total assets (1,267,076) (1,223,592)    
Income taxes payable (646) (166)    
Total current liabilities (646) (166)    
Intercompany payables (563,895) (549,048)    
Total liabilities (564,541) (549,214)    
Earnings reinvested (140,435) (131,509)    
Other equity (562,100) (542,869)    
ExxonMobil share of equity (702,535) (674,378)    
Total equity (702,535) (674,378)    
Total liabilities and equity $ (1,267,076) $ (1,223,592)