XML 41 R29.htm IDEA: XBRL DOCUMENT
v3.23.3

Net Income per Common and Common Equivalent Share Net Income per Common and Common Equivalent Share (Tables) | 12 Months Ended
--- | ---
Sep. 03, 2023
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 000’s): 202320222021Net income attributable to Costco$6,292 $5,844 $5,007 Weighted average basic shares443,854 443,651 443,089 RSUs598 1,106 1,257 Weighted average diluted shares444,452 444,757 444,346

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration