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Earnings Per Share Of Common Stock (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
EPS of Common Stock |  |  |
Income from continuing operations |  | $ 335 | $ 24
Discontinued operations, net of tax | [1] | 0 | 50
NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS |  | $ 335 | $ 74
Share count information: |  |  |
Weighted average number of basic shares outstanding (in shares) |  | 543,000 | 541,000
Assumed exercise of dilutive stock options and awards (in shares) |  | 1,000 | 2,000
Weighted average number of diluted shares outstanding |  | 544,000 | 543,000
Income available to common stockholders, per common share: |  |  |
Income from continuing operations, basic (in dollars per share) |  | $ 0.62 | $ 0.05
Discontinued operations, basic (in dollars per share) |  | 0 | 0.09
Basic - Net Income Attributable to Common Stockholders (in dollars per share) |  | 0.62 | 0.14
Income from continuing operations, diluted (in dollars per share) |  | 0.62 | 0.05
Discontinued operations, diluted (in dollars per share) |  | 0 | 0.09
Diluted - Net Income Attributable to Common Stockholders (in dollars per share) |  | $ 0.62 | $ 0.14
Stock Options |  |  |
Income available to common stockholders, per common share: |  |  |
Shares excluded from the calculation of diluted shares outstanding, in shares |  | 0 | 0
[1] | Net of income tax benefits of $36 million for the three months ended March 31, 2020.

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