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Computation of Earnings Per Share | 9 Months Ended
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Feb. 29, 2016
Earnings Per Share [Abstract] |
Computation of Earnings Per Share | (4) Computation of Earnings Per Share The calculation of basic and diluted ea rnings per common share for the periods ended February 29, 2016 and February 28, 2015 was as follows (in millions, except per share amounts):
|  |  | Three Months Ended |  | Nine Months Ended
|  |  | 2016 |  | 2015 |  | 2016 |  | 2015
Basic earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |
Net earnings allocable to common shares(1) |  | $ | 506 |  | $ | 626 |  | $ | 1,888 |  | $ | 1,941
Weighted-average common shares |  |  | 272 |  |  | 283 |  |  | 278 |  |  | 284
Basic earnings per common share |  | $ | 1.86 |  | $ | 2.21 |  | $ | 6.79 |  | $ | 6.85
Diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |
Net earnings allocable to common shares(1) |  | $ | 506 |  | $ | 626 |  | $ | 1,888 |  | $ | 1,941
Weighted-average common shares |  |  | 272 |  |  | 283 |  |  | 278 |  |  | 284
Dilutive effect of share-based awards |  |  | 3 |  |  | 4 |  |  | 3 |  |  | 4
Weighted-average diluted shares |  |  | 275 |  |  | 287 |  |  | 281 |  |  | 288
Diluted earnings per common share |  | $ | 1.84 |  | $ | 2.18 |  | $ | 6.71 |  | $ | 6.75
Anti-dilutive options excluded from diluted |  |  |  |  |  |  |  |  |  |  |  |
earnings per common share |  |  | 4.8 |  |  | 2.0 |  |  | 4.0 |  |  | 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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