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Earnings Per Common Share (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Schedule of Basic and Diluted Earnings Per Common Share | Basic and diluted earnings per common share were calculated as follows:
| Three Months Ended March 31,
| 2021 |  | 2020
| (Dollars in millions, except per share amounts, shares in thousands)
Income (Numerator): |  |  |
Net income | $ | 475 |  |  | 314 |
Net income applicable to common stock for computing basic earnings per common share | 475 |  |  | 314 |
Net income as adjusted for purposes of computing diluted earnings per common share | $ | 475 |  |  | 314 |
Shares (Denominator): |  |  |
Weighted-average number of shares: |  |  |
Outstanding during period | 1,100,350 |  |  | 1,092,970 |
Non-vested restricted stock | (17,876) |  |  | (17,511) |
Weighted-average shares outstanding for computing basic earnings per common share | 1,082,474 |  |  | 1,075,459 |
Incremental common shares attributable to dilutive securities: |  |  |
Shares issuable under convertible securities | 10 |  |  | 10 |
Shares issuable under incentive compensation plans | 9,102 |  |  | 6,285 |
Number of shares as adjusted for purposes of computing diluted earnings per common share | 1,091,586 |  |  | 1,081,754 |
Basic earnings per common share | $ | 0.44 |  |  | 0.29 |
Diluted earnings per common share | $ | 0.44 |  |  | 0.29 |

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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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