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Earnings Per Common Share (Tables) | 6 Months Ended
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Sep. 30, 2020
Earnings Per Share [Abstract] |
Schedule of computations for basic and diluted earnings per common share | The computations for basic and diluted earnings or loss per common share are as follows:
| Three Months Ended September 30, |  | Six Months Ended September 30,
(In millions, except per share amounts) | 2020 |  | 2019 |  | 2020 |  | 2019
Income (loss) from continuing operations | $ | 627 |  |  | $ | (676) |  |  | $ | 1,122 |  |  | $ | (193) |
Net income attributable to noncontrolling interests | (50) |  |  | (53) |  |  | (100) |  |  | (107) |
Income (loss) from continuing operations attributable to McKesson | 577 |  |  | (729) |  |  | 1,022 |  |  | (300) |
Loss from discontinued operations, net of tax | — |  |  | (1) |  |  | (1) |  |  | (7) |
Net income (loss) attributable to McKesson | $ | 577 |  |  | $ | (730) |  |  | $ | 1,021 |  |  | $ | (307) |
Weighted-average common shares outstanding: |  |  |  |  |  |  |
Basic | 162 |  |  | 183 |  |  | 162 |  |  | 185 |
Effect of dilutive securities: |  |  |  |  |  |  |
Restricted stock units | 1 |  |  | — |  |  | 1 |  |  | — |
Diluted | 163 |  |  | 183 |  |  | 163 |  |  | 185 |
Earnings (loss) per common share attributable to McKesson: (1) |  |  |  |  |  |  |
Diluted |  |  |  |  |  |  |
Continuing operations | $ | 3.54 |  |  | $ | (3.99) |  |  | $ | 6.26 |  |  | $ | (1.62) |
Discontinued operations | — |  |  | — |  |  | — |  |  | (0.03) |
Total | $ | 3.54 |  |  | $ | (3.99) |  |  | $ | 6.26 |  |  | $ | (1.65) |
Basic |  |  |  |  |  |  |
Continuing operations | $ | 3.56 |  |  | $ | (3.99) |  |  | $ | 6.31 |  |  | $ | (1.62) |
Discontinued operations | — |  |  | — |  |  | (0.01) |  |  | (0.03) |
Total | $ | 3.56 |  |  | $ | (3.99) |  |  | $ | 6.30 |  |  | $ | (1.65) |
(1) Certain computations may reflect rounding adjustments.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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