Earnings per Share (Tables)

3 Months Ended

Aug. 31, 2012

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
(In thousands except per share data)	August 31, 2012		August 31, 2011
Basic Earnings per Share
Net income	$	76,733	$	68,638
Less: net income allocated to participating unvested securities	365		370
Net income available to common shareholders	$	76,368	$	68,268
Basic weighted average common shares outstanding	126,110		131,309
Basic earnings per common share:	$	0.61	$	0.52
Diluted Earnings per Share
Net income	$	76,733	$	68,638
Less: net income allocated to participating unvested securities	365		370
Net income available to common shareholders	$	76,368	$	68,268
Basic weighted average common shares outstanding	126,110		131,309
Effect of dilutive securities – employee stock options	348		29
Diluted weighted average common shares outstanding	126,458		131,338
Diluted earnings per share:	$	0.60	$	0.52