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Net Income per Common and Common Equivalent Share (Tables) | 3 Months Ended
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Nov. 20, 2022
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table shows the amounts used in computing net income per share and the weighted average number of shares of basic and of potentially dilutive common shares outstanding (shares in 000s):
| 12 Weeks Ended |  |
| November 20, 2022 |  | November 21, 2021 |  |  |  |
Net income attributable to Costco | $ | 1,364 |  |  | $ | 1,324 |  |  |  |  |
Weighted average basic shares | 443,837 |  |  | 443,377 |  |  |  |  |
RSUs | 694 |  |  | 1,227 |  |  |  |  |
Weighted average diluted shares | 444,531 |  |  | 444,604 |  |  |  |  |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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