v2.4.0.6
Disclosures About Segments And Related Information (Schedule Of Segments And Related Information) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Earnings after income tax $ 41,060 $ 30,460 $ 19,280
Earnings of equity companies included above 15,289 10,677 7,143
Sales and other operating revenue 467,029 [1],[2] 370,125 [1],[2] 301,500 [1],[2]
Depreciation and depletion expense 15,583 14,760 11,917
Interest revenue 135 118 179
Interest expense 247 259 548
Income taxes 31,051 21,561 15,119
Additions to property, plant and equipment 33,638 74,156 22,491
Investments in equity companies 16,968 17,429 15,742
Total assets 331,052 302,510 233,323
Upstream U.S. [Member]
      
Earnings after income tax 5,096 4,272 2,893
Earnings of equity companies included above 2,045 1,261 1,216
Sales and other operating revenue 14,023 [1] 8,895 [1] 3,406 [1]
Intersegment revenue 9,807 8,102 6,718
Depreciation and depletion expense 4,879 3,506 1,768
Interest expense 30 20 38
Income taxes 2,852 2,219 1,451
Additions to property, plant and equipment 10,887 52,300 2,973
Investments in equity companies 2,963 2,636 2,440
Total assets 82,900 76,725 24,940
Upstream Non-U.S. [Member]
      
Earnings after income tax 29,343 19,825 14,214
Earnings of equity companies included above 11,768 8,415 5,269
Sales and other operating revenue 32,419 [1] 26,046 [1] 21,355 [1]
Intersegment revenue 49,910 39,066 32,982
Depreciation and depletion expense 7,021 7,574 6,376
Interest expense 36 25 27
Income taxes 25,755 18,627 15,183
Additions to property, plant and equipment 18,934 16,937 13,307
Investments in equity companies 8,439 9,625 8,864
Total assets 127,977 115,646 102,372
Downstream U.S. [Member]
      
Earnings after income tax 2,268 770 (153)
Earnings of equity companies included above 7 23 (102)
Sales and other operating revenue 120,844 [1] 93,599 [1] 76,467 [1]
Intersegment revenue 18,489 13,546 10,168
Depreciation and depletion expense 650 681 687
Interest expense 10 1 10
Income taxes 1,123 360 (164)
Additions to property, plant and equipment 400 888 1,449
Investments in equity companies 210 254 323
Total assets 18,354 18,378 17,493
Downstream Non-U.S. [Member]
      
Earnings after income tax 2,191 2,797 1,934
Earnings of equity companies included above 353 225 188
Sales and other operating revenue 257,779 [1] 206,042 [1] 173,404 [1]
Intersegment revenue 73,549 52,697 39,190
Depreciation and depletion expense 1,560 1,565 1,665
Interest expense 24 19 18
Income taxes 696 560 (22)
Additions to property, plant and equipment 1,334 1,332 1,447
Investments in equity companies 1,358 1,240 1,190
Total assets 51,132 47,402 45,098
Chemical U.S. [Member]
      
Earnings after income tax 2,215 2,422 769
Earnings of equity companies included above 198 171 164
Sales and other operating revenue 15,466 [1] 13,402 [1] 9,962 [1]
Intersegment revenue 12,226 9,694 7,185
Depreciation and depletion expense 380 421 400
Interest expense 2 1 4
Income taxes 1,027 736 281
Additions to property, plant and equipment 241 247 294
Investments in equity companies 253 285 259
Total assets 7,245 7,148 7,044
Chemical Non-U.S. [Member]
      
Earnings after income tax 2,168 2,491 1,540
Earnings of equity companies included above 1,365 1,163 906
Sales and other operating revenue 26,476 [1] 22,119 [1] 16,885 [1]
Intersegment revenue 10,563 8,421 6,947
Depreciation and depletion expense 458 432 457
Interest expense (1) 4 1
Income taxes 465 347 (182)
Additions to property, plant and equipment 910 1,733 2,553
Investments in equity companies 3,973 3,586 2,873
Total assets 19,862 19,087 17,117
Corporate And Financing [Member]
      
Earnings after income tax (2,221) (2,117) (1,917)
Earnings of equity companies included above (447) (581) (498)
Sales and other operating revenue 22 [1] 22 [1] 21 [1]
Intersegment revenue 262 282 284
Depreciation and depletion expense 635 581 564
Interest revenue 135 118 179
Interest expense 146 189 450
Income taxes (867) (1,288) (1,428)
Additions to property, plant and equipment 932 719 468
Investments in equity companies (228) (197) (207)
Total assets $ 23,582 $ 18,124 $ 19,259
[1] Sales and other operating revenue includes sales-based taxes of $33,503 million for 2011, $28,547 million for 2010 and $25,936 million for 2009. See Note 1, Summary of Accounting Policies.
[2] Sales and other operating revenue includes sales-based taxes of $33,503 million for 2011, $28,547 million for 2010 and $25,936 million for 2009.