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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Schedule Of Earnings Per Share Basic And Diluted By Common Class [Text Block] | The following table sets forth the computation of basic and diluted earnings per share on net income (in millions, except per share information):
|  |  |  | Three months ended March 31,
|  |  |  |  |  | 2021 |  | 2020
Earnings: |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  | $ | 139 |  |  | $ | (88) |
Shares: |  |  |  |  |  |  |  |
Weighted average outstanding shares |  |  |  |  |  | 68 |  |  | 62 |
Equivalent shares from outstanding stock awards |  |  |  |  |  | — |  |  | 1 |
Denominator for diluted calculation |  |  |  |  |  | 68 |  |  | 63 |
Earnings per share: |  |  |  |  |  |  |  |
Basic |  |  |  |  |  | $ | 2.04 |  |  | $ | (1.41) |
Diluted |  |  |  |  |  | $ | 2.03 |  |  | $ | (1.41) |
The following table presents approximate amounts of stock appreciation rights and performance contingent awards excluded from the calculation of common equivalent shares (in thousands):
| Three months ended March 31,
| 2021 |  | 2020
Excluded from common equivalent shares: |  |  |
Stock appreciation rights | 1,248 |  |  | 1,060 |
Performance contingent awards | 291 |  |  | 150 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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