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Earnings Per Share and Stockholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2021
Stockholders' Equity Note [Abstract] |
Calculation of Basic and Diluted EPS | The following table presents the calculation of basic and diluted net income (loss) attributable to common stockholders per share:
|  | Three months ended June 30, |  | Six months ended June 30,
millions except share and per-share amounts |  | 2021 |  | 2020 |  | 2021 |  | 2020
Net income (loss) from continuing operations |  | $ | 100 |  |  | $ | (6,716) |  |  | $ | 399 |  |  | $ | (8,729) |
Income (loss) from discontinued operations |  | 3 |  |  | (1,415) |  |  | (442) |  |  | (1,415) |
Net income (loss) |  | 103 |  |  | (8,131) |  |  | (43) |  |  | (10,144) |
Less: Preferred stock dividends |  | (200) |  |  | (222) |  |  | (400) |  |  | (441) |
Net loss attributable to common stockholders |  | $ | (97) |  |  | $ | (8,353) |  |  | $ | (443) |  |  | $ | (10,585) |
Weighted-average number of basic shares |  | 934.2 |  | 915.5 |  | 933.8 |  | 906.2
Basic loss per common share |  | $ | (0.10) |  |  | $ | (9.12) |  |  | $ | (0.47) |  |  | $ | (11.68) |
Net loss attributable to common stockholders |  | $ | (97) |  |  | $ | (8,353) |  |  | $ | (443) |  |  | $ | (10,585) |
Weighted-average number of basic shares |  | 934.2 |  | 915.5 |  | 933.8 |  | 906.2
Dilutive securities |  | — |  |  | — |  | — |  |  | —
Total diluted weighted-average common shares |  | 934.2 |  |  | 915.5 |  | 933.8 |  |  | 906.2
Diluted loss per common share |  | $ | (0.10) |  |  | $ | (9.12) |  |  | $ | (0.47) |  |  | $ | (11.68) |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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