Stockholders' Equity - Additional Information (Detail) $ / shares in Units, $ in Billions		12 Months Ended
	Jul. 29, 2022 shares	Sep. 30, 2022 USD ($) preferredStockSeries shares	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Oct. 31, 2022 USD ($)	Oct. 21, 2022 $ / shares	Dec. 31, 2021 USD ($)	Jan. 31, 2021 USD ($)
Class of Stock [Line Items]
Stock repurchase program, authorized amount							$ 12.0	$ 8.0
Stock repurchase plan, remaining authorized funds		$ 5.2
Dividends, paid		$ 3.2	$ 2.8	$ 2.7
Number of series of preferred stock acquired | preferredStockSeries		3
Subsequent Event
Class of Stock [Line Items]
Stock repurchase program, authorized amount					$ 12.0
Dividends declared, quarterly, per share amount (in dollars per share) | $ / shares						$ 0.45
Series A convertible participating preferred stock
Class of Stock [Line Items]
Issuance of stock (in shares) | shares	176,655
Preferred stock, conversion rate		100.0000	100.0000
Visa Europe | Class A equivalent preferred stock
Class of Stock [Line Items]
Preferred stock, conversion rate		100
Share Repurchase Program Aggregate | Class C common stock
Class of Stock [Line Items]
Shares of class C common stock released from transfer restrictions, converted to class A common stock (in shares) | shares		142,000,000