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Earnings Per Common Share | 3 Months Ended
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Mar. 31, 2020
Earnings Per Share [Abstract] |
Earnings Per Common Share | 3. EARNINGS PER COMMON SHARE
Computation of Basic and Diluted Earnings per Common Share
| Three Months Ended March 31,
(In millions, except for per share data) | 2020 | 2019
Earnings |  |
Net income | $ | 273 |  | $ | 630 |
Less: Preferred stock dividends | 5 |  | 5 |
Net income available to common stockholders | $ | 268 |  | $ | 625 |
Shares |  |
Weighted average common shares outstanding, basic | 358.5 |  | 360.0 |
Dilutive effect of warrants [1] | — |  | 1.4 |
Dilutive effect of stock-based awards under compensation plans | 2.6 |  | 3.3 |
Weighted average common shares outstanding and dilutive potential common shares | 361.1 |  | 364.7 |
Net income available to com mon stockholders per common share |  |
Basic | $ | 0.75 |  | $ | 1.74 |
Diluted | $ | 0.74 |  | $ | 1.71 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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