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Segment information (Condensed Statements Of Comprehensive Earnings And Balance Sheets Of Reportable Segments) (Details) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) | Sep. 30, 2015 USD ($) segment | Sep. 30, 2014 USD ($) | Dec. 31, 2014 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues from external customers |  | $ 3,601 | $ 5,336 | $ 10,259 | $ 13,571 |
Depreciation, depletion and amortization |  | 744 | 842 | 2,488 | 2,409 |
Interest expense |  | 138 | $ 118 | 383 | $ 366 |
Asset impairments |  | 5,851 |  | 15,479 |  |
Earnings (loss) before income taxes |  | (5,623) | $ 1,654 | (15,726) | $ 3,768 |
Income tax expense (benefit) |  | (1,714) | 613 | (5,435) | 1,698 |
Net earnings (loss) |  | (3,909) | 1,041 | (10,291) | 2,070 |
Net earnings (loss) attributable to noncontrolling interests |  | (402) | 25 | (369) | 55 |
Net earnings (loss) attributable to Devon |  | (3,507) | 1,016 | (9,922) | 2,015 |
Property and equipment, net |  | 22,775 | 35,169 | 22,775 | 35,169 | $ 36,296
Total assets |  | 34,351 | 50,839 | 34,351 | 50,839 | 50,637
Capital expenditures |  | 1,187 | 1,755 | 4,460 | 11,294 |
Eliminations [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Interest expense |  | (11) | (11) | (34) | (31) |
Total assets |  | (113) | (117) | (113) | (117) | (124)
Eliminations [Member] | Intersegment [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues from external customers |  | (172) | (199) | $ (499) | (672) |
United States [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Number of reportable segments | segment |  |  |  | 1 |  |
Revenues from external customers | [1] | 2,381 | 4,197 | $ 6,570 | 10,065 |
Depreciation, depletion and amortization | [1] | 510 | 654 | 1,817 | 1,791 |
Interest expense | [1] | 96 | 95 | 271 | 303 |
Asset impairments | [1] | 4,716 |  | 14,344 |  |
Earnings (loss) before income taxes | [1] | (4,464) | 1,463 | (14,450) | 2,224 |
Income tax expense (benefit) | [1] | (1,605) | 557 | (5,334) | 1,121 |
Net earnings (loss) | [1] | (2,859) | 906 | (9,116) | 1,103 |
Net earnings (loss) attributable to noncontrolling interests | [1] |  |  | 1 | 1 |
Net earnings (loss) attributable to Devon | [1] | (2,859) | 906 | (9,117) | 1,102 |
Property and equipment, net | [1] | 11,586 | 23,661 | 11,586 | 23,661 | 24,463
Total assets | [1] | 17,436 | 30,431 | 17,436 | 30,431 | 32,037
Capital expenditures | [1] | 974 | 1,211 | 3,205 | 9,724 |
Canada [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues from external customers |  | 221 | 481 | 802 | 1,671 |
Depreciation, depletion and amortization |  | 134 | 113 | 382 | 419 |
Interest expense |  | 22 | 20 | 70 | 61 |
Asset impairments |  | 336 |  | 336 |  |
Earnings (loss) before income taxes |  | (401) | 109 | (609) | 1,310 |
Income tax expense (benefit) |  | (116) | 38 | (129) | 517 |
Net earnings (loss) |  | (285) | 71 | (480) | 793 |
Net earnings (loss) attributable to Devon |  | (285) | 71 | (480) | 793 |
Property and equipment, net |  | 5,623 | 6,882 | 5,623 | 6,882 | 6,790
Total assets |  | 6,754 | 10,895 | 6,754 | 10,895 | 8,517
Capital expenditures |  | 108 | 335 | 478 | 1,055 |
General Partner And EnLink [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues from external customers | [1] | 999 | 658 | 2,887 | 1,835 |
Depreciation, depletion and amortization | [1] | 100 | 75 | 289 | 199 |
Interest expense | [1] | 31 | 14 | 76 | 33 |
Asset impairments | [1] | 799 |  | 799 |  |
Earnings (loss) before income taxes | [1] | (758) | 82 | (667) | 234 |
Income tax expense (benefit) | [1] | 7 | 18 | 28 | 60 |
Net earnings (loss) | [1] | (765) | 64 | (695) | 174 |
Net earnings (loss) attributable to noncontrolling interests | [1] | (402) | 25 | (370) | 54 |
Net earnings (loss) attributable to Devon | [1] | (363) | 39 | (325) | 120 |
Property and equipment, net | [1] | 5,566 | 4,626 | 5,566 | 4,626 | 5,043
Total assets | [1] | 10,274 | 9,630 | 10,274 | 9,630 | $ 10,207
Capital expenditures | [1] | 105 | 209 | 777 | 515 |
General Partner And EnLink [Member] | Intersegment [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues from external customers | [1] | $ 172 | $ 199 | $ 499 | $ 672 |
[1] | Due to Devon's control of EnLink through its control of the General Partner, the acquisition of VEX by EnLink from Devon in the second quarter of 2015 was considered a transfer of net assets between entities under common control, and EnLink was required to recast its financial statements as of September 30, 2015 to include the activities of such assets from the date of common control. Therefore, the results of VEX for prior periods have been moved from the U.S. segment to the EnLink segment.

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