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Computation of Earnings Per Share | 3 Months Ended
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Aug. 31, 2015
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):
|  |  | 2015 |  | 2014
Basic earnings per common share: |  |  |  |  |
Net earnings allocable to common shares(1) | $ | 691 |  | $ | 653
Weighted-average common shares |  | 282 |  |  | 285
Basic earnings per common share | $ | 2.45 |  | $ | 2.29
Diluted earnings per common share: |  |  |  |  |
Net earnings allocable to common shares(1) | $ | 691 |  | $ | 653
Weighted-average common shares |  | 282 |  |  | 285
Dilutive effect of share-based awards |  | 4 |  |  | 4
Weighted-average diluted shares |  | 286 |  |  | 289
Diluted earnings per common share | $ | 2.42 |  | $ | 2.26
Anti-dilutive options excluded from diluted |  |  |  |  |
| earnings per common share |  | 3.5 |  |  | 2.1
(1) Net earnings available to participating securities were immaterial in all periods presented.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=32703322&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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