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Basic and Diluted Earnings Per Share (Tables) | 9 Months Ended
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Feb. 29, 2016
Earnings Per Share [Abstract] |
Basic and diluted earnings per share | Basic and diluted earnings per share were calculated as follows:
| For the three months ended |  | For the nine months ended
In millions, except per share amounts | February 29, 2016 |  | February 28, 2015 |  | February 29, 2016 |  | February 28, 2015
Basic earnings per share: |  |  |  |  |  |  |
Net income | $ | 180.4 |  |  | $ | 169.4 |  |  | $ | 578.7 |  |  | $ | 513.7 |
Weighted-average common shares outstanding | 360.5 |  |  | 363.2 |  |  | 360.8 |  |  | 363.1 |
Basic earnings per share | $ | 0.50 |  |  | $ | 0.47 |  |  | $ | 1.60 |  |  | $ | 1.41 |
Diluted earnings per share: |  |  |  |  |  |  |
Net income | $ | 180.4 |  |  | $ | 169.4 |  |  | $ | 578.7 |  |  | $ | 513.7 |
Weighted-average common shares outstanding | 360.5 |  |  | 363.2 |  |  | 360.8 |  |  | 363.1 |
Dilutive effect of common share equivalents | 1.7 |  |  | 1.8 |  |  | 1.6 |  |  | 1.7 |
Weighted-average common shares outstanding, assuming dilution | 362.2 |  |  | 365.0 |  |  | 362.4 |  |  | 364.8 |
Diluted earnings per share | $ | 0.50 |  |  | $ | 0.46 |  |  | $ | 1.60 |  |  | $ | 1.41 |
Weighted-average anti-dilutive common share equivalents | 0.7 |  |  | — |  |  | 0.7 |  |  | 0.4 |

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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/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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