| Computation of basic and diluted earnings per share |
| | | | | | | | | For the Three Months Ended | | | June 30, 2020 | | June 30, 2019 | Number of shares on which basic earnings per share is calculated: | | | | | | | Weighted-average shares outstanding during period | | | 889,435,166 | | | 886,273,682 | Add — Incremental shares under stock-based compensation plans | | | 4,290,365 | | | 3,281,570 | Add — Incremental shares associated with contingently issuable shares | | | 1,213,549 | | | 1,276,549 | Number of shares on which diluted earnings per share is calculated | | | 894,939,080 | | | 890,831,801 | | | | | | | | Income from continuing operations (millions) | | $ | 1,362 | | $ | 2,499 | Income/(loss) from discontinued operations, net of tax (millions) | | | (1) | | | (1) | Net income on which basic earnings per share is calculated (millions) | | $ | 1,361 | | $ | 2,498 | | | | | | | | Income from continuing operations (millions) | | $ | 1,362 | | $ | 2,499 | Net income applicable to contingently issuable shares (millions) | | | — | | | 0 | Income from continuing operations on which diluted earnings per share is calculated (millions) | | $ | 1,362 | | $ | 2,500 | Income/(loss) from discontinued operations, net of tax, on which basic and diluted earnings per share is calculated (millions) | | | (1) | | | (1) | Net income on which diluted earnings per share is calculated (millions) | | $ | 1,361 | | $ | 2,499 | | | | | | | | Earnings/(loss) per share of common stock: | | | | | | | Assuming dilution | | | | | | | Continuing operations | | $ | 1.52 | | $ | 2.81 | Discontinued operations | | | 0.00 | | | 0.00 | Total | | $ | 1.52 | | $ | 2.81 | Basic | | | | | | | Continuing operations | | $ | 1.53 | | $ | 2.82 | Discontinued operations | | | 0.00 | | | 0.00 | Total | | $ | 1.53 | | $ | 2.82 |
| | | | | | | | | For the Six Months Ended | | | June 30, 2020 | | June 30, 2019 | Number of shares on which basic earnings per share is calculated: | | | | | | | Weighted-average shares outstanding during period | | | 888,702,256 | | | 887,927,612 | Add — Incremental shares under stock-based compensation plans | | | 5,015,390 | | | 3,327,015 | Add — Incremental shares associated with contingently issuable shares | | | 1,271,513 | | | 1,116,537 | Number of shares on which diluted earnings per share is calculated | | | 894,989,159 | | | 892,371,164 | | | | | | | | Income from continuing operations (millions) | | $ | 2,538 | | $ | 4,093 | Income/(loss) from discontinued operations, net of tax (millions) | | | (2) | | | (4) | Net income on which basic earnings per share is calculated (millions) | | $ | 2,536 | | $ | 4,089 | | | | | | | | Income from continuing operations (millions) | | $ | 2,538 | | $ | 4,093 | Net income applicable to contingently issuable shares (millions) | | | (2) | | | 0 | Income from continuing operations on which diluted earnings per share is calculated (millions) | | $ | 2,536 | | $ | 4,093 | Income/(loss) from discontinued operations, net of tax, on which basic and diluted earnings per share is calculated (millions) | | | (2) | | | (4) | Net income on which diluted earnings per share is calculated (millions) | | $ | 2,534 | | $ | 4,090 | | | | | | | | Earnings/(loss) per share of common stock: | | | | | | | Assuming dilution | | | | | | | Continuing operations | | $ | 2.83 | | $ | 4.58 | Discontinued operations | | | 0.00 | | | 0.00 | Total | | $ | 2.83 | | $ | 4.58 | Basic | | | | | | | Continuing operations | | $ | 2.85 | | $ | 4.61 | Discontinued operations | | | 0.00 | | | 0.00 | Total | | $ | 2.85 | | $ | 4.61 |
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