Basic and Diluted Earnings Per Share (Tables)

12 Months Ended

May. 31, 2015

Earnings Per Share [Abstract]

Basic and diluted earnings per share

Basic and diluted earnings per share were calculated as follows:

	Year ended May 31,
In millions, except per share amounts	2015		2014		2013
Basic earnings per share:
Net income	$	674.9	$	627.5	$	569.0
Weighted-average common shares outstanding	362.9		364.5		363.8
Basic earnings per share	$	1.86	$	1.72	$	1.56
Diluted earnings per share:
Net income	$	674.9	$	627.5	$	569.0
Weighted-average common shares outstanding	362.9		364.5		363.8
Dilutive effect of common share equivalents	1.7		1.6		0.9
Weighted-average common shares outstanding, assuming dilution	364.6		366.1		364.7
Diluted earnings per share	$	1.85	$	1.71	$	1.56
Weighted-average anti-dilutive common share equivalents	0.3		0.7		6.5