| Computation of basic and diluted earnings per share |
| | | | | | | | | For the Three Months Ended | | | September 30, 2019 | | September 30, 2018 | Number of shares on which basic earnings per share is calculated: | | | | | | | Weighted-average shares outstanding during period | | | 886,018,372 | | | 911,152,848 | Add — Incremental shares under stock-based compensation plans | | | 5,368,268 | | | 2,566,139 | Add — Incremental shares associated with contingently issuable shares | | | 1,453,105 | | | 1,493,644 | Number of shares on which diluted earnings per share is calculated | | | 892,839,745 | | | 915,212,631 | | | | | | | | Income from continuing operations (millions) | | $ | 1,673 | | $ | 2,692 | Income/(loss) from discontinued operations, net of tax (millions) | | | (1) | | | 2 | Net income on which basic earnings per share is calculated (millions) | | $ | 1,672 | | $ | 2,694 | | | | | | | | Income from continuing operations (millions) | | $ | 1,673 | | $ | 2,692 | Net income applicable to contingently issuable shares (millions) | | | — | | | — | Income from continuing operations on which diluted earnings per share is calculated (millions) | | $ | 1,673 | | $ | 2,692 | Income/(loss) from discontinued operations, net of tax, on which basic and diluted earnings per share is calculated (millions) | | | (1) | | | 2 | Net income on which diluted earnings per share is calculated (millions) | | $ | 1,672 | | $ | 2,694 | | | | | | | | Earnings/(loss) per share of common stock: | | | | | | | Assuming dilution | | | | | | | Continuing operations | | $ | 1.87 | | $ | 2.94 | Discontinued operations | | | 0.00 | | | 0.00 | Total | | $ | 1.87 | | $ | 2.94 | Basic | | | | | | | Continuing operations | | $ | 1.89 | | $ | 2.95 | Discontinued operations | | | 0.00 | | | 0.00 | Total | | $ | 1.89 | | $ | 2.95 |
| | | | | | | | | For the Nine Months Ended | | | September 30, 2019 | | September 30, 2018 | Number of shares on which basic earnings per share is calculated: | | | | | | | Weighted-average shares outstanding during period | | | 887,291,199 | | | 915,632,501 | Add — Incremental shares under stock-based compensation plans | | | 4,007,433 | | | 3,000,429 | Add — Incremental shares associated with contingently issuable shares | | | 1,228,726 | | | 1,373,960 | Number of shares on which diluted earnings per share is calculated | | | 892,527,357 | | | 920,006,890 | | | | | | | | Income from continuing operations (millions) | | $ | 5,766 | | $ | 6,770 | Income/(loss) from discontinued operations, net of tax (millions) | | | (5) | | | 7 | Net income on which basic earnings per share is calculated (millions) | | $ | 5,761 | | $ | 6,777 | | | | | | | | Income from continuing operations (millions) | | $ | 5,766 | | $ | 6,770 | Net income applicable to contingently issuable shares (millions) | | | 0 | | | (1) | Income from continuing operations on which diluted earnings per share is calculated (millions) | | $ | 5,766 | | $ | 6,769 | Income/(loss) from discontinued operations, net of tax, on which basic and diluted earnings per share is calculated (millions) | | | (5) | | | 7 | Net income on which diluted earnings per share is calculated (millions) | | $ | 5,762 | | $ | 6,776 | | | | | | | | Earnings/(loss) per share of common stock: | | | | | | | Assuming dilution | | | | | | | Continuing operations | | $ | 6.46 | | $ | 7.36 | Discontinued operations | | | (0.01) | | | 0.01 | Total | | $ | 6.45 | | $ | 7.37 | Basic | | | | | | | Continuing operations | | $ | 6.50 | | $ | 7.39 | Discontinued operations | | | (0.01) | | | 0.01 | Total | | $ | 6.49 | | $ | 7.40 |
|