XML 12 R1.htm IDEA: XBRL DOCUMENT v3.6.0.2
Document and Entity Information - shares
 3 Months Ended
Dec. 31, 2016
Jan. 27, 2017
Entity Registrant Name VISA INC.  
Entity Central Index Key 0001403161  
Current Fiscal Year End Date --09-30  
Entity Filer Category Large Accelerated Filer  
Document Type 10-Q  
Document Period End Date Dec. 31, 2016  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Class A common stock    
Entity Common Stock, Shares Outstanding   1,858,020,846
Class B common stock    
Entity Common Stock, Shares Outstanding   245,513,385
Class C common stock    
Entity Common Stock, Shares Outstanding   14,504,893