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Earnings per Common Share (Tables) | 6 Months Ended
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Jun. 30, 2020
Earnings Per Share [Abstract] |
Computation of basic and diluted earnings per common share |
Computation of basic and diluted earnings per common share |  |  |  |
(In millions, except per share data) |  | Three months ended June 30, |  | Six months ended June 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Numerator: |  |  |  |  |  |  |  |
Net income |  | $ | 1,250 |  |  | $ | 851 |  |  | $ | 1,799 |  |  | $ | 2,143 |
Less: Preferred stock dividends |  | 26 |  |  | 30 |  |  | 62 |  |  | 61 |
Net income applicable to common shareholders |  | $ | 1,224 |  |  | $ | 821 |  |  | $ | 1,737 |  |  | $ | 2,082 |
Denominator: |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  | 313.7 |  |  | 332.0 |  |  | 315.6 |  |  | 332.3 |
Effect of dilutive potential common shares: |  |  |  |  |  |  |  |
Stock options |  | 2.1 |  |  | 3.3 |  |  | 2.7 |  |  | 3.2 |
Restricted stock units (non-participating) and performance stock awards |  | 1.2 |  |  | 1.6 |  |  | 1.5 |  |  | 1.7 |
Weighted average common and dilutive potential common shares outstanding |  | 317.0 |  |  | 336.9 |  |  | 319.8 |  |  | 337.2 |
Earnings per common share - Basic |  | $ | 3.90 |  |  | $ | 2.47 |  |  | $ | 5.50 |  |  | $ | 6.27 |
Earnings per common share - Diluted |  | 3.86 |  |  | 2.44 |  |  | 5.43 |  |  | 6.17 |
Anti-dilutive options excluded from diluted earnings per common share |  | 3.2 |  |  | 4.1 |  |  | 1.4 |  |  | 4.5 |

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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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