Computation of Earnings Per Share

3 Months Ended

Aug. 31, 2011

Earnings Per Share [Abstract]

Computation of Earnings Per Share

(4) Computation of Earnings Per Share

The calculation of basic and diluted earnings per common share for the three-month periods ended August 31 was as follows (in millions, except per share amounts):

		2011		2010
Basic earnings per common share:
Net earnings allocable to common shares(1)		$	463	$	379
Weighted-average common shares			316		314
Basic earnings per common share		$	1.46	$	1.21
Diluted earnings per common share:
Net earnings allocable to common shares(1)		$	463	$	379
Weighted-average common shares			316		314
Dilutive effect of share-based awards			2		1
Weighted-average diluted shares			318		315
Diluted earnings per common share		$	1.46	$	1.20
Anti-dilutive options excluded from diluted
	earnings per common share		13.2		11.4

(1) Net earnings available to participating securities were immaterial in all periods presented.