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Net Income per Common and Common Equivalent Share | 12 Months Ended
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Sep. 02, 2018
Earnings Per Share [Abstract] |
Net Income Per Common and Common Equivalent Share | Note 9—Net Income per Common and Common Equivalent Share The following table shows the amounts used in computing net income per share and the weighted average number of shares of potentially dilutive common shares outstanding (shares in 000’s):
| 2018 |  | 2017 |  | 2016
Net income attributable to Costco | $ | 3,134 |  |  | $ | 2,679 |  |  | $ | 2,350 |
Weighted average number of common shares used in basic net income per common share | 438,515 |  |  | 438,437 |  |  | 438,585 |
RSUs and other | 3,319 |  |  | 2,500 |  |  | 2,678 |
Weighted average number of common shares and dilutive potential of common stock used in diluted net income per share | 441,834 |  |  | 440,937 |  |  | 441,263 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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