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EARNINGS PER SHARE | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
EARNINGS PER SHARE | EARNINGS PER SHARE The earnings per share amounts are the same for class A and class B common shares as the holders of each class are legally entitled to equal per share distributions whether through dividends or in liquidation. The following table sets forth the computation of basic and diluted earnings per share for the three months ended March 31, 2021 and 2020 (in millions, except per share amounts):
| Three Months Ended March 31, |  |
2021 |  | 2020 |  |  |  |
Numerator: |  |  |  |  |  |  |
Net income attributable to common shareowners | $ | 4,792 |  | $ | 965 |  |  |  |
Denominator: |  |  |  |  |  |  |
Weighted average shares | 867 |  | 858 |  |  |  |
Vested portion of restricted units | 5 |  | 6 |  |  |  |
Denominator for basic earnings per share | 872 |  | 864 |  |  |  |
Effect of dilutive securities: |  |  |  |  |  |  |
Restricted units | 3 |  | 5 |  |  |  |
Stock options | 1 |  | — |  |  |  |
Denominator for diluted earnings per share | 876 |  | 869 |  |  |  |
Basic earnings per share | $ | 5.50 |  | $ | 1.12 |  |  |  |
Diluted earnings per share | $ | 5.47 |  | $ | 1.11 |  |  |  |
Diluted earnings per share for the three months ended March 31, 2021 and 2020 excluded the effect of 0.2 and 1.2 million shares of common stock, respectively, that may be issued upon the exercise of employee stock options because such effect would have been antidilutive.

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