v3.19.3.a.u2
Disclosures About Segments And Related Information (Schedule Of Segments And Related Information) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Segment Reporting Information [Line Items]      
Earnings after income tax $ 14,340 $ 20,840 $ 19,710
Earnings of equity companies included above 5,441 7,355 5,380
Sales and other operating revenue 255,583 279,332 237,162
Depreciation and depletion expense 18,998 18,745 19,893
Interest revenue 84 64 36
Interest expense 830 766 601
Income taxes expense (benefit) 5,282 9,532 (1,174)
Additions to property, plant and equipment 24,904 20,051 24,901
Investments in equity companies 29,291 26,382 24,354
Total assets 362,597 346,196 348,691
Effect of U.S. tax reform - noncash      
Segment Reporting Information [Line Items]      
Effect of U.S. tax reform   (291) (5,942)
U.S. [Member]      
Segment Reporting Information [Line Items]      
Sales and other operating revenue 89,612 96,930 82,079
Income taxes expense (benefit) (469) 1,145 (8,561)
Non-U.S. [Member]      
Segment Reporting Information [Line Items]      
Sales and other operating revenue 165,971 182,402 155,083
Income taxes expense (benefit) 5,751 8,387 7,387
Upstream [Member] | U.S. [Member]      
Segment Reporting Information [Line Items]      
Earnings after income tax 536 1,739 6,622
Earnings of equity companies included above 282 608 216
Sales and other operating revenue 9,364 10,359 9,349
Intersegment revenue 10,893 8,683 5,729
Depreciation and depletion expense 6,162 6,024 6,963
Interest expense 54 77 87
Income taxes expense (benefit) (151) 104 (8,552)
Additions to property, plant and equipment 10,404 7,119 9,761
Investments in equity companies 5,313 4,566 4,680
Total assets 95,750 90,310 89,048
Upstream [Member] | U.S. [Member] | Effect of U.S. tax reform - noncash      
Segment Reporting Information [Line Items]      
Effect of U.S. tax reform     (7,602)
Upstream [Member] | Non-U.S. [Member]      
Segment Reporting Information [Line Items]      
Earnings after income tax 13,906 12,340 6,733
Earnings of equity companies included above 4,534 5,816 3,618
Sales and other operating revenue 13,779 15,158 14,508
Intersegment revenue 30,864 29,659 22,935
Depreciation and depletion expense 9,305 9,257 9,741
Interest expense 34 31 29
Income taxes expense (benefit) 5,509 8,149 5,463
Additions to property, plant and equipment 7,347 7,974 8,617
Investments in equity companies 17,736 16,337 14,494
Total assets 151,181 148,914 155,822
Upstream [Member] | Non-U.S. [Member] | Effect of U.S. tax reform - noncash      
Segment Reporting Information [Line Items]      
Effect of U.S. tax reform     480
Downstream [Member] | U.S. [Member]      
Segment Reporting Information [Line Items]      
Earnings after income tax 1,717 2,962 1,948
Earnings of equity companies included above 196 156 118
Sales and other operating revenue 70,523 74,327 61,695
Intersegment revenue 22,416 21,954 14,857
Depreciation and depletion expense 674 684 658
Interest expense 1 2 1
Income taxes expense (benefit) 465 946 (61)
Additions to property, plant and equipment 2,685 1,152 769
Investments in equity companies 319 293 276
Total assets 23,442 17,898 18,172
Downstream [Member] | U.S. [Member] | Effect of U.S. tax reform - noncash      
Segment Reporting Information [Line Items]      
Effect of U.S. tax reform     (618)
Downstream [Member] | Non-U.S. [Member]      
Segment Reporting Information [Line Items]      
Earnings after income tax 606 3,048 3,649
Earnings of equity companies included above 19 (6) 490
Sales and other operating revenue 134,460 147,007 122,881
Intersegment revenue 24,775 29,888 22,263
Depreciation and depletion expense 832 890 883
Interest expense 9 12 6
Income taxes expense (benefit) 361 1,008 934
Additions to property, plant and equipment 1,777 1,595 1,551
Investments in equity companies 1,062 1,162 1,462
Total assets 37,133 34,024 34,294
Chemical [Member] | U.S. [Member]      
Segment Reporting Information [Line Items]      
Earnings after income tax 206 1,642 2,190
Earnings of equity companies included above (4) 48 90
Sales and other operating revenue 9,723 12,239 11,035
Intersegment revenue 7,864 9,044 7,270
Depreciation and depletion expense 555 405 299
Income taxes expense (benefit) 58 566 362
Additions to property, plant and equipment 1,344 1,146 1,330
Investments in equity companies 1,835 870 341
Total assets 16,544 14,904 13,363
Chemical [Member] | U.S. [Member] | Effect of U.S. tax reform - noncash      
Segment Reporting Information [Line Items]      
Effect of U.S. tax reform     (335)
Chemical [Member] | Non-U.S. [Member]      
Segment Reporting Information [Line Items]      
Earnings after income tax 386 1,709 2,328
Earnings of equity companies included above 818 1,113 1,217
Sales and other operating revenue 17,693 20,204 17,659
Intersegment revenue 5,905 7,217 5,550
Depreciation and depletion expense 621 606 504
Interest expense 1 1  
Income taxes expense (benefit) 305 245 664
Additions to property, plant and equipment 589 348 2,019
Investments in equity companies 3,335 3,431 3,387
Total assets 20,376 21,131 21,133
Corporate And Financing [Member]      
Segment Reporting Information [Line Items]      
Earnings after income tax (3,017) (2,600) (3,760)
Earnings of equity companies included above (404) (380) (369)
Sales and other operating revenue 41 38 35
Intersegment revenue 224 205 208
Depreciation and depletion expense 849 879 845
Interest revenue 84 64 36
Interest expense 731 643 478
Income taxes expense (benefit) (1,265) (1,486) 16
Additions to property, plant and equipment 758 717 854
Investments in equity companies (309) (277) (286)
Total assets $ 18,171 $ 19,015 16,859
Corporate And Financing [Member] | Effect of U.S. tax reform - noncash      
Segment Reporting Information [Line Items]      
Effect of U.S. tax reform     $ 2,133