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Net Income per Common and Common Equivalent Share
8 Months Ended
May 13, 2018
Earnings Per Share [Abstract]  
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):
 
12 Weeks Ended
 
36 Weeks Ended
 
May 13,
2018
 
May 7,
2017
  
May 13,
2018
 
May 7,
2017
Net income attributable to Costco
$
750

 
$
700

  
$
2,091

 
$
1,760

Weighted average number of common shares used in basic net income per common share
438,740

 
438,817

  
438,576

 
438,650

RSUs and other
2,975

 
2,239

  
2,807

 
2,095

Weighted average number of common shares and dilutive potential of common stock used in diluted net income per share
441,715

 
441,056

  
441,383

 
440,745