Earnings per Share (Tables)

6 Months Ended

Nov. 30, 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					Six Months Ended
(In thousands except per share data)	November 30, 2012			November 30, 2011		November 30, 2012		November 30, 2011
Basic Earnings per Share
Net income	$	78,027		$	74,350	$	154,760	$	142,988
Less dividends to:
Common shares	$	78,866		$	70,055	$	78,866	$	70,055
Unvested shares	878			765		878		765
Total dividends	$	79,744		$	70,820	$	79,744	$	70,820
Undistributed net (loss) income	$	(1,717	)	$	3,530	$	75,016	$	72,168
Less: net (loss) income allocated to participating unvested securities	(8		)	21		409		448
Net (loss) income available to common shareholders	$	(1,709	)	$	3,509	$	74,607	$	71,720
Basic weighted average common shares outstanding	124,185			129,727		125,153		130,522
Basic earnings per common share:
Common shares - distributed earnings	$	0.64		$	0.54	$	0.64	$	0.54
Common shares - undistributed earnings	(0.01		)	0.03		0.60		0.55
Total common shares	$	0.63		$	0.57	$	1.24	$	1.09
Unvested shares - distributed earnings	$	0.64		$	0.54	$	0.64	$	0.54
Unvested shares - undistributed earnings	(0.01		)	0.03		0.60		0.55
Total unvested shares	$	0.63		$	0.57	$	1.24	$	1.09

	Three Months Ended					Six Months Ended
(In thousands except per share data)	November 30, 2012			November 30, 2011		November 30, 2012		November 30, 2011
Diluted Earnings per Share
Net income	$	78,027		$	74,350	$	154,760	$	142,988
Less dividends to:
Common shares	$	78,866		$	70,055	$	78,866	$	70,055
Unvested shares	878			765		878		765
Total dividends	$	79,744		$	70,820	$	79,744	$	70,820
Undistributed net (loss) income	$	(1,717	)	$	3,530	$	75,016	$	72,168
Less: net (loss) income allocated to participating unvested securities	(8		)	21		409		448
Net (loss) income available to common shareholders	$	(1,709	)	$	3,509	$	74,607	$	71,720
Basic weighted average common shares outstanding	124,185			129,727		125,153		130,522
Effect of dilutive securities – employee stock options	424			13		388		21
Diluted weighted average common shares outstanding	124,609			129,740		125,541		130,543
Diluted earnings per share:
Common shares - distributed earnings	$	0.64		$	0.54	$	0.64	$	0.54
Common shares - undistributed earnings	(0.01		)	0.03		0.59		0.55
Total common shares	$	0.63		$	0.57	$	1.23	$	1.09
Unvested shares - distributed earnings	$	0.64		$	0.54	$	0.64	$	0.54
Unvested shares - undistributed earnings	(0.01		)	0.03		0.59		0.55
Total unvested shares	$	0.63		$	0.57	$	1.23	$	1.09