v3.3.0.814
Document and Entity Information Document - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2015
Nov. 13, 2015
Mar. 31, 2015
Entity Information [Line Items]      
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-K    
Document Period End Date Sep. 30, 2015    
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 128,200
Class A common stock      
Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding   1,946,442,415  
Class B common stock      
Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding   245,513,385  
Class C common stock      
Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding   19,587,524