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Net Income per Common and Common Equivalent Share | 8 Months Ended
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May 09, 2021
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 basic and potentially dilutive common shares outstanding (shares in 000s):
| 12 Weeks Ended |  | 36 Weeks Ended
| May 9, 2021 |  | May 10, 2020 |  | May 9, 2021 |  | May 10, 2020
Net income attributable to Costco | $ | 1,220 |  |  | $ | 838 |  |  | $ | 3,337 |  |  | $ | 2,613 |
Weighted average basic shares | 443,043 |  |  | 442,322 |  |  | 443,043 |  |  | 442,054 |
RSUs | 1,084 |  |  | 1,533 |  |  | 1,293 |  |  | 1,700 |
Weighted average diluted shares | 444,127 |  |  | 443,855 |  |  | 444,336 |  |  | 443,754 |
Anti-dilutive RSUs | 1,046 |  |  | — |  |  | — |  |  | — |
Anti-dilutive shares are excluded from the calculation of diluted shares and earnings per diluted share because their impact would increase earnings per diluted share.

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