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Earnings per Share (Computation of Basic Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
May 31, 2014 | Feb. 28, 2014 | Nov. 30, 2013 | Aug. 31, 2013 | May 31, 2013 | Feb. 28, 2013 | Nov. 30, 2012 | Aug. 31, 2012 | May 31, 2014 | May 31, 2013 | May 31, 2012
Basic Earnings per Share |  |  |  |  |  |  |  |  |  |  |  |
Net income | $ 127,224 | [1] | $ 84,602 | $ 84,862 | $ 77,754 | $ 85,977 | $ 74,705 | $ 78,027 | $ 76,733 | $ 374,442 | $ 315,442 | $ 297,637
Less: net income allocated to participating unvested securities |  |  |  |  |  |  |  |  |  | 3,452 | 1,896 | 1,880
Net income available to common shareholders |  |  |  |  |  |  |  |  |  | $ 370,990 | $ 313,546 | $ 295,757
Basic weighted average common shares outstanding (shares) | 119,541 | [1] | 119,913 | 119,907 | 122,130 | 122,392 | 123,120 | 124,185 | 126,110 | 120,377 | 123,956 | 129,891
Basic earnings per share: |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share (dollars per share) | $ 1.04 | [1] | $ 0.70 | $ 0.71 | $ 0.63 | $ 0.69 | $ 0.60 | $ 0.63 | $ 0.61 | $ 3.08 | $ 2.53 | $ 2.27
[1] | On April 30, 2014, Cintas completed its previously announced partnership transaction with the shareholders of Shred-it to combine Cintas’ document destruction business with Shred-it’s document destruction business. Under the agreement, Cintas and Shred-it each contributed its document destruction business to a newly formed partnership owned 42% by Cintas and 58% by the shareholders of Shred-it. The deconsolidation of the document destruction business negatively impacted fiscal 2014 fourth quarter revenue. In the fourth quarter of fiscal 2014, the Company realized a $106.4 million gain on deconsolidation of the shredding business. In addition, as a result of the shredding transaction, the Company recorded an asset impairment charge of $16.1 million in the fourth quarter of fiscal 2014. The Company also recorded transaction costs of $28.5 million, of which $2.2 million was recorded in the third quarter and $26.3 million was recorded in the fourth quarter. Please see Note 9 entitled Acquisitions and Deconsolidation for additional information on the transaction.

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