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Earnings per Share (Tables) | 9 Months Ended
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Feb. 28, 2013
Earnings Per Share [Abstract] |
Computation of basic and diluted earnings per share | The following table sets forth the computation of basic and diluted earnings per share using the two-class method for amounts attributable to Cintas’ common shares:
| Three Months Ended |  | Nine Months Ended
(In thousands except per share data) | February 28, 2013 |  | February 29, 2012 |  | February 28, 2013 |  | February 29, 2012
Basic Earnings per Share |  |  |  |  |  |  |  |  |
Net income | $ | 74,705 |  |  | $ | 76,035 |  |  | $ | 229,465 |  |  | $ | 219,023 |
Less dividends to: |  |  |  |  |  |  |
Common shares | $ | — |  |  | $ | — |  |  | $ | 78,866 |  |  | $ | 70,055 |
Unvested shares | — |  |  | — |  |  | 878 |  |  | 765 |
Total dividends | $ | — |  |  | $ | — |  |  | $ | 79,744 |  |  | $ | 70,820 |
Undistributed net income | $ | 74,705 |  |  | $ | 76,035 |  |  | $ | 149,721 |  |  | $ | 148,203 |
Less: net income allocated to participating unvested securities | 517 |  |  | 556 |  |  | 1,048 |  |  | 1,096 |
Net income available to common shareholders | $ | 74,188 |  |  | $ | 75,479 |  |  | $ | 148,673 |  |  | $ | 147,107 |
Basic weighted average common shares outstanding | 123,120 |  |  | 129,735 |  |  | 124,483 |  |  | 130,261 |
Basic earnings per common share: |  |  |  |  |  |  |
Common shares - distributed earnings | $ | 0.00 |  |  | $ | 0.00 |  |  | $ | 0.64 |  |  | $ | 0.54 |
Common shares - undistributed earnings | 0.60 |  |  | 0.58 |  |  | 1.20 |  |  | 1.13 |
Total common shares | $ | 0.60 |  |  | $ | 0.58 |  |  | $ | 1.84 |  |  | $ | 1.67 |
Unvested shares - distributed earnings | $ | 0.00 |  |  | $ | 0.00 |  |  | $ | 0.64 |  |  | $ | 0.54 |
Unvested shares - undistributed earnings | 0.60 |  |  | 0.58 |  |  | 1.20 |  |  | 1.13 |
Total unvested shares | $ | 0.60 |  |  | $ | 0.58 |  |  | $ | 1.84 |  |  | $ | 1.67 |
| Three Months Ended |  | Nine Months Ended
(In thousands except per share data) | February 28, 2013 |  | February 29, 2012 |  | February 28, 2013 |  | February 29, 2012
Diluted Earnings per Share |  |  |  |  |  |  |  |  |
Net income | $ | 74,705 |  |  | $ | 76,035 |  |  | $ | 229,465 |  |  | $ | 219,023 |
Less dividends to: |  |  |  |  |  |  |
Common shares | $ | — |  |  | $ | — |  |  | $ | 78,866 |  |  | $ | 70,055 |
Unvested shares | — |  |  | — |  |  | 878 |  |  | 765 |
Total dividends | $ | — |  |  | $ | — |  |  | $ | 79,744 |  |  | $ | 70,820 |
Undistributed net income | $ | 74,705 |  |  | $ | 76,035 |  |  | $ | 149,721 |  |  | $ | 148,203 |
Less: net income allocated to participating unvested securities | 517 |  |  | 556 |  |  | 1,048 |  |  | 1,096 |
Net income available to common shareholders | $ | 74,188 |  |  | $ | 75,479 |  |  | $ | 148,673 |  |  | $ | 147,107 |
Basic weighted average common shares outstanding | 123,120 |  |  | 129,735 |  |  | 124,483 |  |  | 130,261 |
Effect of dilutive securities – employee stock options | 637 |  |  | 210 |  |  | 418 |  |  | 60 |
Diluted weighted average common shares outstanding | 123,757 |  |  | 129,945 |  |  | 124,901 |  |  | 130,321 |
Diluted earnings per share: |  |  |  |  |  |  |  |  |
Common shares - distributed earnings | $ | 0.00 |  |  | $ | 0.00 |  |  | $ | 0.64 |  |  | $ | 0.54 |
Common shares - undistributed earnings | 0.60 |  |  | 0.58 |  |  | 1.19 |  |  | 1.13 |
Total common shares | $ | 0.60 |  |  | $ | 0.58 |  |  | $ | 1.83 |  |  | $ | 1.67 |
Unvested shares - distributed earnings | $ | 0.00 |  |  | $ | 0.00 |  |  | $ | 0.64 |  |  | $ | 0.54 |
Unvested shares - undistributed earnings | 0.60 |  |  | 0.58 |  |  | 1.19 |  |  | 1.13 |
Total unvested shares | $ | 0.60 |  |  | $ | 0.58 |  |  | $ | 1.83 |  |  | $ | 1.67 |

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