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Earnings Per Common Share (Tables) | 12 Months Ended
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Mar. 31, 2026
Earnings Per Share [Abstract] |
Schedule of Basic and Diluted Earnings Per Common Share | The computations for basic and diluted earnings or loss per common share were as follows:
| Years Ended March 31,
(In millions, except per share amounts) | 2026 |  | 2025 |  | 2024
Numerator |  |  |  |  |
Income from continuing operations | $ | 5,099 |  |  | $ | 3,481 |  |  | $ | 3,160 |
Net income attributable to noncontrolling interests | (215) |  |  | (186) |  |  | (158) |
Adjustment to redemption value in net income attributable to noncontrolling interests | (122) |  |  | — |  |  | — |
Net income attributable to McKesson Corporation | $ | 4,762 |  |  | $ | 3,295 |  |  | $ | 3,002 |
Denominator |  |  |  |  |
Weighted-average common shares outstanding: |  |  |  |  |
Basic | 123.6 |  |  | 127.4 |  |  | 133.2 |
Effect of dilutive securities: |  |  |  |  |
Stock options | — |  |  | — |  |  | 0.2 |
Restricted stock units (1) | 0.5 |  |  | 0.7 |  |  | 0.7 |
Diluted | 124.1 |  |  | 128.1 |  |  | 134.1 |
Earnings per common share attributable to McKesson Corporation: (2) |  |  |  |  |
Diluted | $ | 38.38 |  |  | $ | 25.72 |  |  | $ | 22.39 |
Basic | $ | 38.55 |  |  | $ | 25.86 |  |  | $ | 22.54 |
(1)Includes dilutive effect from restricted stock units and performance-based restricted stock units. (2)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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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