Cover - shares	6 Months Ended
	Mar. 31, 2024	Apr. 17, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	001-33977
Entity Registrant Name	VISA INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	26-0267673
Entity Address, Address Line One	P.O. Box 8999
Entity Address, City or Town	San Francisco,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94128-8999
City Area Code	650
Local Phone Number	432-3200
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001403161
Current Fiscal Year End Date	--09-30
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Amendment Flag	false
Class A common stock
Document Information [Line Items]
Title of 12(b) Security	Class A Common Stock, par value $0.0001 per share
Trading Symbol	V
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		1,574,151,974
2026 Notes
Document Information [Line Items]
Title of 12(b) Security	1.500% Senior Notes due 2026
Trading Symbol	V26
Security Exchange Name	NYSE
2029 Notes
Document Information [Line Items]
Title of 12(b) Security	2.000% Senior Notes due 2029
Trading Symbol	V29
Security Exchange Name	NYSE
2034 Notes
Document Information [Line Items]
Title of 12(b) Security	2.375% Senior Notes due 2034
Trading Symbol	V34
Security Exchange Name	NYSE
Class B-1 common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		245,513,385
Class C common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		9,273,174