Document and Entity Information - shares	9 Months Ended
	Jun. 30, 2015	Jul. 17, 2015
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	Jun. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3
Amendment Flag	false
Class A common stock
Entity Common Stock, Shares Outstanding		1,951,387,285
Class B common stock
Entity Common Stock, Shares Outstanding		245,513,385
Class C common stock
Entity Common Stock, Shares Outstanding		19,208,816