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(Loss) Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2021
Earnings Per Share [Abstract] |
Schedule of (loss) earnings per share, basic and diluted | The following table shows how we computed basic and diluted earnings per common share for the years ended December 31 (dollars and share data in millions):
|  | 2021 |  | 2020 |  | 2019
Net (loss) income |  | $ | (182) |  |  | $ | (1,354) |  |  | $ | 569 |
Weighted average basic shares |  | 318.0 |  |  | 277.5 |  |  | 296.6 |
Effect of dilutive securities |  | — |  |  | — |  |  | 1.8 |
Weighted average diluted shares |  | 318.0 |  |  | 277.5 |  |  | 298.4 |
Earnings per common share |  |  |  |  |  |
Basic |  | $ | (0.57) |  |  | $ | (4.88) |  |  | $ | 1.92 |
Diluted |  | $ | (0.57) |  |  | $ | (4.88) |  |  | $ | 1.91 |

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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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