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Earnings Per Common Share | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Earnings Per Common Share | 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 |
Our calculation of diluted earnings per common share excludes shares of common stock that are issuable upon exercise of stock options when the exercise price is greater than the average market price of our common stock. We also exclude unvested restricted stock awards that are antidilutive as a result of unrecognized compensation cost. Such shares were less than 1 million for the three months ended March 31, 2021 and 2.7 million for the three months ended March 31, 2020.

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