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Earnings (Loss) Per Common Share Earnings Per Common Share (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Earnings (Loss) Per Common Share |
Computation of Basic and Diluted Earnings per Common Share
| Three Months Ended March 31, |  |
(In millions, except for per share data) | 2021 | 2020 |  |  |
Earnings |  |  |  |  |
Net income | $ | 249 |  | $ | 273 |  |  |  |
Less: Preferred stock dividends | 5 |  | 5 |  |  |  |
Net income available to common stockholders | $ | 244 |  | $ | 268 |  |  |  |
Shares |  |  |  |  |
Weighted average common shares outstanding, basic | 358.2 |  | 358.5 |  |  |  |
Dilutive effect of stock-based awards under compensation plans | 4.0 |  | 2.6 |  |  |  |
Weighted average common shares outstanding and dilutive potential common shares | 362.2 |  | 361.1 |  |  |  |
Net income available to common stockholders per common share |  |  |  |  |
Basic | $ | 0.68 |  | $ | 0.75 |  |  |  |
Diluted | $ | 0.67 |  | $ | 0.74 |  |  |  |

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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=6371337&loc=d3e3550-109257 + Details
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