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Discontinued Operations (Results of Operations associated with Discontinued Operations) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Revenues, other income and net gain on disposal of assets: |  |  |  |  |  |
Total revenues, other income and net gain on disposal of assets | $ 54,238 | $ 29,827 |  | $ 92,622 | $ 52,709 |
Costs and expenses: |  |  |  |  |  |
Cost of revenues (excludes items below) | 44,207 | 27,177 |  | 79,275 | 48,261 |
Depreciation and amortization | 819 | 871 | [1] | 1,624 | 1,715 | [1]
Selling, general and administrative expenses | 694 | 625 |  | 1,297 | 1,200 |
Other taxes | 190 | 189 |  | 382 | 351 |
Total costs and expenses | 45,910 | 28,862 |  | 82,578 | 51,527 |
Income from operations | 8,328 | 965 |  | 10,044 | 1,182 |
Net interest and other financial costs | 312 | 372 |  | 574 | 725 |
Income from discontinued operations, net of tax | $ 0 | 8,214 |  | $ 0 | 8,448 |
Discontinued Operations, Disposed of by Sale |  |  |  |  |  |
Revenues, other income and net gain on disposal of assets: |  |  |  |  |  |
Revenues and other income |  | 3,081 |  |  | 8,420 |
Net gain on disposal of assets |  | 11,682 |  |  | 11,682 |
Total revenues, other income and net gain on disposal of assets |  | 14,763 |  |  | 20,102 |
Costs and expenses: |  |  |  |  |  |
Cost of revenues (excludes items below) |  | 2,748 |  |  | 7,654 |
Depreciation and amortization |  | 1 |  |  | 3 |
Selling, general and administrative expenses |  | 48 |  |  | 121 |
Other taxes |  | 24 |  |  | 75 |
Total costs and expenses |  | 2,821 |  |  | 7,853 |
Income from operations |  | 11,942 |  |  | 12,249 |
Net interest and other financial costs |  | 2 |  |  | 6 |
Income before income taxes |  | 11,940 |  |  | 12,243 |
Provision for income taxes |  | 3,726 |  |  | 3,795 |
Income from discontinued operations, net of tax |  | $ 8,214 |  |  | $ 8,448 |
[1] | The three and six months ended June 30, 2021 includes $43 million of impairments of long lived assets.

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