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Earnings per Common Share (Tables) | 9 Months Ended
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Sep. 30, 2019
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 September 30, |  | Nine months ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Numerator: |  |  |  |  |  |  |  |
Net income |  | $ | 931 |  |  | $ | 979 |  |  | $ | 3,074 |  |  | $ | 2,702 |
Less: Preferred stock dividends |  | 42 |  |  | 37 |  |  | 103 |  |  | 105 |
Net income applicable to common shareholders |  | $ | 889 |  |  | $ | 942 |  |  | $ | 2,971 |  |  | $ | 2,597 |
Denominator: |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  | 327.7 |  |  | 346.0 |  |  | 330.8 |  |  | 349.7 |
Effect of dilutive potential common shares: |  |  |  |  |  |  |  |
Stock options |  | 3.4 |  |  | 3.8 |  |  | 3.2 |  |  | 3.8 |
Restricted stock units (non-participating) and performance stock awards |  | 1.9 |  |  | 1.9 |  |  | 1.7 |  |  | 1.9 |
Weighted average common and dilutive potential common shares outstanding |  | 333.0 |  |  | 351.7 |  |  | 335.7 |  |  | 355.4 |
Earnings per common share - Basic |  | $ | 2.71 |  |  | $ | 2.72 |  |  | $ | 8.98 |  |  | $ | 7.43 |
Earnings per common share - Diluted |  | $ | 2.67 |  |  | $ | 2.68 |  |  | $ | 8.85 |  |  | $ | 7.31 |
Anti-dilutive options excluded from diluted earnings per common share |  | 1.8 |  |  | 2.3 |  |  | 3.7 |  |  | 1.9 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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